SAMSUNG S3F9488

21-S3-C9484/C9488/F9488-092003
USER'S MANUAL
S3C9484/C9488/F9488
8-bit CMOS
Microcontroller
Revision 1
S3C9484/C9488/F9488
1
PRODUCT OVERVIEW
PRODUCT OVERVIEW
S3C9-SERIES MICROCONTROLLERS
Samsung's SAM88RCRI family of 8-bit single-chip CMOS microcontrollers offers a fast and efficient CPU, a wide
range of integrated peripherals, and various mask-programmable ROM sizes.
A address/data bus architecture and a large number of bit-configurable I/O ports provide a flexible programming
environment for applications with varied memory and I/O requirements. Timer/counters with selectable operating
modes are included to support real-time operations.
S3C9484/C9488/F9488 MICROCONTROLLER
The S3C9484/C9488/F9488 single-chip CMOS microcontrollers are fabricated using the highly advanced CMOS
process technology based on Samsung’s latest CPU architecture.
The S3C9484 is a microcontroller with a 4K-byte mask-programmable ROM embedded.
The S3C9488 is a microcontroller with a 8K-byte mask-programmable ROM embedded.
The S3F9488 is a microcontroller with a 8K-byte multi time programmable ROM embedded.
Using a proven modular design approach, Samsung engineers have successfully developed the
S3C9484/C9488/F9488 by integrating the following peripheral modules with the powerful SAM88 RCRI core:
— Five configurable I/O ports (38 pins) with 8-pin LED direct drive and LCD display
— Ten interrupt sources with one vector and one interrupt level
— One watchdog timer function with two source clock (Basic Timer overflow and internal RC oscillator)
— One 8-bit basic timer for oscillation stabilization
— Watch timer for real time clock
— Two 8-bit timer/counter with time interval, PWM, and Capture mode
— Analog to digital converter with 9 input channels and 10-bit resolution
— One asynchronous UART
The S3C9484/C9488/F9488 microcontroller is ideal for use in a wide range of home applications requiring simple
timer/counter, ADC, LED or LCD display with ADC application, etc. They are currently available in 32-pin SOP/SDIP,
42-pin SDIP and 44-pin QFP package.
MTP
The S3F9488 has on-chip 8-Kbyte multi time programmable (MTP) ROM instead of masked ROM. The S3F9488 is
fully compatible to the S3C9488, in function, in D.C. electrical characteristics and in pin configuration.
1-1
PRODUCT OVERVIEW
S3C9484/C9488/F9488
FEATURES
CPU
LCD Controller/Driver (Optional)
•
•
SAM88RCRI CPU core
Memory
•
208-byte general purpose register (RAM)
•
4/8-Kbyte internal mask program memory
•
8-Kbyte internal multi time program memory
(S3F9488)
A/D Converter
•
•
•
•
Crystal, Ceramic, RC
•
•
CPU clock divider (1/1, 1/2, 1/8, 1/16)
•
41 instructions
•
IDLE and STOP instructions added for powerdown modes
Nine analog input channels
12.5us conversion speed at 4MHz fADC clock.
Asynchronous UART
Oscillation Sources
Instruction Set
8 COM × 19 SEG (MAX 19 digit)
4 COM × 19 SEG (MAX 8 digit)
Programmable baud rate generator
Support serial data transmit/receive operations
with 8-bit, 9-bit UART
Watchdog Timer
•
•
Two oscillation sources selection
(by Smart option)
Safety work for noise interference
Low Voltage Reset (LVR)
Instruction Execution Time
•
500 ns at 8-MHz fOSC (minimum)
Interrupts
•
10 interrupt sources with one vector / one level
I/O Ports
•
Total 38 bit-programmable pins (44QFP)
Total 36 bit-programmable pins (42SDIP)
Total 26 bit-programmable pins (32SDIP/32SOP)
•
Low Voltage Check to make system reset
•
VLVR = 2.6V/3.3V/3.9V
Voltage Detector for Indication
•
Voltage Detector to indicate specific voltage.
•
S/W control (2.4V, 2.7V, 3.3V, 3.9V)
Operating Temperature Range
•
–25°C to + 85°C
Basic Timer
Operating Voltage Range
•
•
2.2V to 5.5 V at 4 MHz fOSC
•
2.7V to 5.5 V at 8 MHz fOSC
One programmable 8-bit basic timer (BT) for
Oscillation stabilization control •
8bit Timers A/B
•
•
One 8-bit timer/counter (Timer A) with three
operating modes; Interval mode, capture mode
and PWM mode.
One 8-bit timer/counter (Timer B) Carrier
frequency (or PWM) generator.
Watch Timer
•
Real-time and interval time measurement.
•
Four frequency output to BUZ pin.
•
Clock generation for LCD.
1-2
Package Type
•
32-pin SDIP, 32-pin SOP
•
42-pin SDIP, 44-pin QFP
Smart Option
•
Low Voltage Reset(LVR) level and enable/disable
are at your hardwired option.
•
I/O Port (P0.0- P0.2/P3.3-P3.6) mode selection at
Reset.
•
Watchdog Timer oscillator selection.
S3C9484/C9488/F9488
PRODUCT OVERVIEW
BLOCK DIAGRAM
P0.0-P0.7
(ADC4-8/COM4-7)
Port 0
XIN , XTIN
XOUT, XTOUT
RESET (P0.2)
P1.0-P1.7
(ADC0-3, COM0-3)
A/D
Port 1
OSC/RESET
8-Bit
Basic Timer
TAOUT(P3.4)
TACK(P3.5)
TACAP(P3.6)
AVREF
8-Bit
Timer
/Counter A
BUZ(P1.1)
8-Bit
Timer
/Counter B
P2.0-P2.7
(SEG3-10)
Port 3
P3.0-P3.6
(SEG15-18,
INT0-3)
Port 4
P4.0-P4.6
(SEG0-2,
SEG11-14)
LCD
Driver
COM0-7
SEG0-18
UART
TXD(P3.2)
RXD(P3.1)
I/O Port and Interrupt Control
SAM88RCRI CPU
Watchdog
Timer with RC
oscillator
TBPWM(P1.0)
Port 2
8-Kbyte
ROM
208-Byte
RAM
Watch Timer
Figure 1-1. S3C9484/C9488/F9488 Block Diagram
1-3
PRODUCT OVERVIEW
S3C9484/C9488/F9488
33
32
31
30
29
28
27
26
25
24
23
P2.3/SEG6
P2.2/SEG5
P2.1/SEG4
P2.0/SEG3
P4.2/SEG2
P4.1/SEG1
P4.0/SEG0
P1.7/COM0
P1.6/COM1
P1.5/COM2
P1.4/COM3
PIN ASSIGNMENT
34
35
36
37
38
39
40
41
42
43
44
S3C9484
S3C9488
S3F9488
(Top View)
(44-QFP)
22
21
20
19
18
17
16
15
14
13
12
P1.3/ADC0
P1.2/ADC1
P1.1/ADC2/BUZ
P1.0/ADC3/TBPWM
P0.7/COM4/ADC4
P0.6/COM5/ADC5
P0.5/COM6/ADC6
AVREF
P0.4/COM7/ADC7
P0.3/ADC8
P0.2/RESETB
SEG18/INT0/P3.3
TAOUT/INT1/P3.4
TACK/INT2/P3.5
TACAP/INT3/P3.6
VDD
VSS
XOUT
XIN
TEST
XTIN/P0.0
XTOUT/P0.1
1
2
3
4
5
6
7
8
9
10
11
SEG7/P2.4
SEG8/P2.5
SEG9/P2.6
SEG10/P2.7
SEG11/P4.3
SEG12/P4.4
SEG13/P4.5
SEG14/P4.6
SEG15/P3.0
SEG16/RXD/P3.1
SEG17/TXD/P3.2
Figure 1-2. S3C9484/C9488/F9488 Pin Assignment (44-QFP)
1-4
S3C9484/C9488/F9488
PRODUCT OVERVIEW
SEG12/P4.4
SEG13/P4.5
SEG14/P4.6
SEG15/P3.0
SEG16/RXD/P3.1
SEG17/TXD/P3.2
SEG18/INT0/P3.3
TAOUT/INT1/P3.4
TACK/INT2/P3.5
TACAP/INT3/P3.6
VDD
VSS
XOUT
XIN
TEST
XTIN/P0.0
XTOUT/P0.1
RESETB/P0.2
AVREF
COM6/ADC6/P0.5
COM5/ADC5/P0.6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
S3C9484
S3C9488
S3F9488
(Top View)
42-SDIP
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
P4.3/SEG11
P2.7/SEG10
P2.6/SEG9
P2.5/SEG8
P2.4/SEG7
P2.3/SEG6
P2.2/SEG5
P2.1/SEG4
P2.0/SEG3
P4.2/SEG2
P4.1/SEG1
P4.0/SEG0
P1.7/COM0
P1.6/COM1
P1.5/COM2
P1.4/COM3
P1.3/ADC0
P1.2/ADC1
P1.1/ADC2/BUZ
P1.0/ADC3/TBPWM
P0.7/ADC4/COM4
Figure 1-3. S3C9484/C9488/F9488 Pin Assignment (42-SDIP)
1-5
PRODUCT OVERVIEW
S3C9484/C9488/F9488
VSS
XOUT
XIN
TEST
XTIN/P0.0
XTOUT/P0.1
RESETB/P0.2
AVREF
ADC3/TBPWM/P1.0
BUZ/ADC2/P1.1
ADC1/P1.2
ADC0/P1.3
COM3/P1.4
COM2/P1.5
COM1/P1.6
COM0/P1.7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
S3C9484
S3C9488
S3F9488
(Top View)
32-SOP
32-SDIP
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VDD
P3.6/INT3/TACAP
P3.5/INT2/TACK
P3.4/INT1/TAOUT
P3.3/INT0/SEG18
P3.2/TXD/SEG17
P3.1/RXD/SEG16
P3.0/SEG15
P2.7/SEG10
P2.6/SEG9
P2.5/SEG8
P2.4/SEG7
P2.3/SEG6
P2.2/SEG5
P2.1/SEG4
P2.0/SEG3
Figure 1-4. S3C9484/C9488/F9488 Pin Assignment (32-SOP/SDIP)
1-6
S3C9484/C9488/F9488
PRODUCT OVERVIEW
PIN DESCRIPTIONS
Table 1-1. Pin Descriptions of 44-QFP and 42-SDIP
Pin
Names
Pin
Type
Pin Description
Circuit
Type
44 Pin
No.
42 Pin
No.
Shared
Functions
P0.0, P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
I/O
I/O port with bit-programmable pins.
Configurable to input or push-pull output
mode. Pull-up resistors can be assigned
by software. Pins can also be assigned
individually as alternative function pins.
E
E-1
E-2
H-16
10–14
16–18
16–18
20-22
XTIN, XTOUT
RESETB
ADC8
COM7/ADC7
COM6/ADC6
COM5/ADC5
COM4/ADC4
P1.0
P1.1–P1.3
P1.4–P1.7
I/O
I/O port with bit-programmable pins.
Configurable to input or push-pull output
mode. Pull-up resistors can be assigned
by software. Pins can also be assigned
individually as alternative function pins.
E-3
E-1
H-14
19–26
23–30
ADC3/TBPWM
ADC2/BUZ
ADC1–ADC0
COM3–COM0
P2.0–P2.7
I/O
I/O port with bit-programmable pins.
Configurable to input mode, push-pull
output mode. Input mode with pull-up
resistors can be assigned by software.
The port 2 pins have high current drive
capability. Pins can also be assigned
individually as alternative function pins.
H-14
30–37
34–41
SEG3–SEG10
P3.0–P3.2
P3.3
P3.4, P3.6
P3.5
I/O
I/O port with bit-programmable pins.
Configurable to input or push-pull output
mode. Pull-up resistors can be assigned
by software. Pins can also be assigned
individually as alternative function pins.
H-14
H-15
H-17
D-5
D-4
42–44,
1–4
4–10
SEG15
SEG16/RXD
SEG17/TXD
SEG18/INT0
TAOUT/INT1
TACK/INT2
TACAP/INT3
P4.0–P4.6
I/O
I/O port with bit-programmable pins.
Configurable to input mode, push-pull
output mode. Input mode with pull-up
resistors can be assigned by software.
Pins can also be assigned individually as
alternative function pins.
H-14
27–29
38–41
31–33
42, 1–3
SEG0–2
SEG11–14
XIN, XOUT
I, O
System clock input and output pins
–
8,7
14,13
–
TEST
I
Test signal input pin (for factory use only;
must be connected to VSS.)
_
9
15
_
VDD
–
Power supply input pin
–
5
11
–
VSS
–
Ground pin
–
6
12
–
1-7
PRODUCT OVERVIEW
S3C9484/C9488/F9488
Table 1-1. Pin Descriptions of 44-QFP and 42-SDIP (Continued)
Pin
Names
Pin
Type
Pin Description
Circuit
Type
44 Pin
No.
42 Pin
No.
Shared
Functions
SEG0–18
O
LCD segment display signal output pins
H-14
H-15
H-17
27–44,
1
31–42,
1–7
P4.0–P4.2
P2.0–P2.7
P4.3–P4.6
P3.0
P3.1/RXD
P3.2/TXD
P3.3/INT0
COM0–7
O
LCD common signal output pins
H-14
H-16
26–23
18–16
14
30–27
20–22
P1.7–P1.4
P0.4–P0.7
ADC0–8
I
A/D converter analog input channels
E-1
E-3
H-16
22–20
19
18-14
13
20–26
P1.3–P1.2
P1.1/BUZ
P1.0/TBPWM
P0.7/COM4
P0.6/COM5
P0.5/COM6
P0.4/COM7
P0.3
AVREF
I
A/D converter reference voltage
15
19
RXD
I/O
Serial data RXD pin for receive input and
transmit output (mode 0)
H-17
43
5
P3.1/SEG16
TXD
O
Serial data TXD pin for transmit output and
shift clock output (mode 0)
H-17
44
6
P3.2/SEG17
INT0
INT1
INT2
INT3
I
External interrupts.
H-15
D-5
D-4
1–4
7–10
P3.3/SEG18
P3.4/TAOUT
P3.5/TACK
P3.6/TACAP
TAOUT
O
Timer/counter(A) overflow output, or
Timer/counter(A) PWM output
D-5
2
8
P3.4/INT1
TACK
I
Timer/counter(A) external clock input
D-4
3
9
P3.5/INT2
TACAP
I
Timer/counter(A) external capture input
D-4
4
10
P3.6/INT3
BUZ
O
Frequency output to buzzer
E-3
20
24
P1.1/ADC2
TBPWM
O
Timer(B) PWM output
E-3
19
23
P1.0/ADC3
XTIN, XTOUT
I
O
Clock input and output pins for subsystem
clock
E
10
11
16
17
P0.0
P0.1
RESETB
I
System reset signal input pin
B
12
18
P0.2
1-8
S3C9484/C9488/F9488
PRODUCT OVERVIEW
Table 1-2. Pin Descriptions of 32-SOP and 32-SDIP
Pin
Names
Pin
Type
Pin Description
Circuit
Type
32 Pin
No.
Shared
Functions
P0.0, P0.1
P0.2
I/O
I/O port with bit-programmable pins.
Configurable to input or push-pull output
mode. Pull-up resistors can be assigned
by software. Pins can also be assigned
individually as alternative function pins.
E
E-2
5–7
XTIN, XTOUT
RESETB
P1.0
P1.1–P1.3
P1.4–P1.7
I/O
I/O port with bit-programmable pins.
Configurable to input or push-pull output
mode. Pull-up resistors can be assigned
by software. Pins can also be assigned
individually as alternative function pins.
E-3
E-1
H-14
9–16
ADC3/TBPWM
ADC2/BUZ
ADC1–ADC0
COM3–COM0
P2.0–P2.7
I/O
I/O port with bit-programmable pins.
Configurable to input mode, push-pull
output mode, or n-channel open-drain
output mode. Input mode with pull-up
resistors can be assigned by software.
The port 2 pins have high current drive
capability. Pins can also be assigned
individually as alternative function pins.
H-14
17–24
SEG3–SEG10
P3.0–P3.2
P3.3
P3.4
P3.5
P3.6
I/O
I/O port with bit-programmable pins.
Configurable to input or push-pull output
mode. Pull-up resistors can be assigned
by software. Pins can also be assigned
individually as alternative function pins.
H-14
H-15
H-17
D-5
D-4
25–31
SEG15
SEG16/RXD
SEG17/TXD
SEG18/INT0
TAOUT/INT1
TACK/INT2
TACAP/INT3
XIN, XOUT
I, O
System clock input and output pins
–
2,3
–
TEST
I
Test signal input pin (for factory use only;
must be connected to VSS.)
_
4
_
VDD
–
Power supply input pin
–
32
–
VSS
–
Ground pin
–
1
–
1-9
PRODUCT OVERVIEW
S3C9484/C9488/F9488
Table 1-2. Pin Descriptions of 32-SOP and 32-SDIP (Continued)
Pin
Names
Pin
Type
Pin Description
Circuit
Type
32 Pin
No.
Shared
Functions
SEG3–10
SEG15–18
O
LCD segment display signal output pins
H-14
H-15
H-17
17–28
P2.0–P2.7
P3.0
P3.1/RXD
P3.2/TXD
P3.3/INT0
COM0–3
O
LCD common signal output pins
H-14
16–13
P1.7–P1.4
ADC0–3
I
A/D converter analog input channels
E-1
E-3
12–9
P1.3–P1.2
P1.1/BUZ
P1.0/TBPWM
AVREF
I
A/D converter reference voltage
RXD
I/O
TXD
8
Serial data RXD pin for receive input and
transmit output (mode 0)
H-17
26
P3.1/SEG16
O
Serial data TXD pin for transmit output and
shift clock output (mode 0)
H-17
27
P3.2/SEG17
INT0
INT1
INT2
INT3
I
External interrupts.
H-15
D-5
D-4
28–31
P3.3/SEG18
P3.4/TAOUT
P3.5/TACK
P3.6/TACAP
TAOUT
O
Timer/counter(A) overflow output, or
Timer/counter(A) PWM output
D-5
29
P3.4/INT1
TACK
I
Timer/counter(A) external clock input
D-4
30
P3.5/INT2
TACAP
I
Timer/counter(A) external capture input
D-4
31
P3.5/INT3
BUZ
O
Frequency output to buzzer
E-3
10
P1.1/ADC2
TBPWM
O
Timer(B) PWM output
E-3
9
P1.0/ADC3
XTIN, XTOUT
I
O
Clock input and output pins for subsystem
clock
E
5
6
P0.0
P0.1
RESETB
I
System reset signal input pin
B
7
P0.2
1-10
S3C9484/C9488/F9488
PRODUCT OVERVIEW
PIN CIRCUITS
VDD
Pull-up
Enable
IN
Data
Output
Disable
Pin Circuit
Type C
I/O
Figure 1-7. Pin Circuit Type D-2
Figure 1-5. Pin Circuit Type B (RESET)
VDD
Pull-up
Enable
VDD
VDD
P-Channel
Data
Data
Out
Output
Disable
Pin Circuit
Type C
Output
Disable
N-Channel
Ext.INT
I/O
Noise
Filter
Input
Normal
Figure 1-6. Pin Circuit Type C
Figure 1-8. Pin Circuit Type D-4 (P3.5-P3.6)
1-11
PRODUCT OVERVIEW
S3C9484/C9488/F9488
VDD
VDD
P3.x Data
Alternative output
(TAOUT)
M
U
X
Output
Disable
Ext.INT
Pull-up
enable
Pin
Circuit
Type C
I/O
Noise
Filter
Normal Input
Figure 1-9. Pin Circuit Type D-5 (P3.4)
VDD
VDD
Pull-up
enable
P-CH
Output Data
MUX
N-CH
Output Disable
(Input Mode)
S m a rt option
Digital Input
Alternative I/O Enable
XTin,XTout
oscillation circuit
Figure 1-10. Pin Circuit Type E (P0.0, P0.1)
1-12
I/O
S3C9484/C9488/F9488
PRODUCT OVERVIEW
VDD
Pull-up
Enable
Data
Output
Disable
Circuit
Type C
I/O
ADC In EN
Data
to ADC
Figure 1-11. Pin Circuit Type E-1 (P0.3, P1.2–P1.3)
V DD
Pull-up register
(50 kΩ typical)
Pull-up
enable
Open-drain
V DD
Smart option
Data
MUX
In/Out
Output DIsable
(input mode)
Input Data
MUX
RESET
Figure 1-12. Pin Circuit Type E-2 (P0.2)
1-13
PRODUCT OVERVIEW
S3C9484/C9488/F9488
VDD
Pull-up
Enable
P1.0 -P1.1 Data
Buzzer Output
TB Underflow
Carrier on/off (P1.0)
Port Alternative option
M
U
X
Circuit
Type C
Output
Disable
ADC In EN
Data
to ADC
Figure 1-13. Pin Circuit Type E-3 (P1.0- P1.1)
1-14
I/O
S3C9484/C9488/F9488
PRODUCT OVERVIEW
VLC4
VLC3
SEG/COM
Out
VLC2
VLC1
Figure 1-14. Pin Circuit Type H (SEG/COM)
1-15
PRODUCT OVERVIEW
S3C9484/C9488/F9488
VLC4
VLC3
SEG
Out
Output
Disable
VLC2
VLC1
Figure 1-15. Pin Circuit Type H-4
VDD
VDD
Pull-up
Enable
Open Drain EN
P-CH
Data
I/O
N-CH
LCD Out EN
SEG/COM
Output
Disable
Circuit
Type H
Input
Figure 1-16. Pin Circuit Type H-14 (P1.4-P1.7, P2, P3.0, P4.0-P4.6)
1-16
S3C9484/C9488/F9488
PRODUCT OVERVIEW
VDD
VDD
Open Drain EN
Pull-up
Enable
P-CH
Data
I/O
N-CH
LCD Out EN
SEG
Circuit
Type H-4
Output Disable
Ext.INT
Noise
Filter
Normal Input
Figure 1-17. Pin Circuit Type H-15 (P3.3)
VDD
VDD
Open Drain EN
P-CH
Data
Pull-up
Enable
I/O
N-CH
LCD Out EN
COM
Output
Disable
Circuit
Type H-4
ADC In EN
Normal In
ADC In
Figure 1-18. Pin Circuit Type H-16 (P0.4–P0.7)
1-17
PRODUCT OVERVIEW
S3C9484/C9488/F9488
VDD
VDD
Open Drain EN
Data
I/O
N-CH
LCD Out EN
SEG
Circuit
Type H-4
Output Disable
Normal Input
Figure 1-19. Pin Circuit Type H-17 (P3.1-P3.2)
1-18
Pull-up
Enable
P-CH
S3C9484/C9488/F9488
2
ADDRESS SPACES
ADDRESS SPACES
OVERVIEW
The S3C9484/C9488/F9488 microcontroller has two kinds of address space:
— Internal program memory (ROM)
— Internal register file
A 13-bit address bus supports program memory operations. A separate 8-bit register bus carries addresses and
data between the CPU and the internal register file.
The S3F9488 have 8-Kbytes of on-chip program memory, which is configured as the Internal ROM mode, all of the 8Kbyte internal program memory is used.
The S3C9484/C9488/F9488 microcontroller has 208 general-purpose registers in its internal register file. 47 bytes in
the register file are mapped for system and peripheral control functions. And 19 bytes in the page1 is mapped for
LCD display data area.
2-1
ADDRESS SPACES
S3C9484/C9488/F9488
PROGRAM MEMORY (ROM)
Program memory (ROM) stores program codes or table data. The S3C9484/C9488 has 4K and 8Kbytes of internal
mask programmable program memory. The program memory address range is therefore 0H–0FFFH and 0H-1FFFH.
The S3F9488 have 8Kbytes (locations 0H–1FFFH) of internal multi time programmable (MTP) program memory (see
Figure 2-1).
The first 2-bytes of the ROM (0000H–0001H) are interrupt vector address.
Unused locations (0002H–00FFH except 3CH, 3DH, 3EH, 3FH) can be used as normal program memory.
The location 3CH, 3DH, 3EH, and 3FH is used as smart option ROM cell.
The program reset address in the ROM is 0100H.
(Decimal)
(HEX)
8,191
8Kbyte
Program
Memory
Area
4,095
4Kbyte
Program
Memory
Area
1FFFH
(S3C9488/F9488)
1000H
0FFFH
(S3C9484)
0200H
Program Start
Smart option ROM cell
0100H
003FH
003CH
0002H
Interrupt Vector Area
0
0000H
Figure 2-1. Program Memory Address Space
2-2
S3C9484/C9488/F9488
ADDRESS SPACES
Smart Option
Smart option is the ROM option for starting condition of the chip. The ROM addresses used by smart option are from
003CH to 003FH. The default value of ROM is FFH.
ROM Address: 003CH
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
.1
.0
LSB
Not used
ROM Address: 003DH
MSB
.7
.6
.5
.4
.3
.2
P3CONH.7 -.0
The reset value of P3CONH (Port 3 Control Register High byte)
register is determined by 3DH.7-3DH.0 bits when CPU is reset.
ROM Address: 003EH
MSB
.7
.6
.5
LVR enable
or disable bit:
0 = Disable
1 = Enable
.4
.3
.2
LVR level selection bits:
10100 = 2.6 V
01110 = 3.3 V
01011 = 3.9 V
.1
.0
LSB
Not used
ROM Address: 003FH
MSB
.7
Not used
.6
.5
.4
.3
P0.0/XTin, P0.1/XTout
pin function selection bit:
0 = XTin/Xtout pin enable
1 = Normal I/O pin enable
.2
.1
.0
LSB
Watchdog timer
oscillator select bit:
0 = Internal RC
oscillator used
1 = Basic Timer
overflow used
P0.2/RESETB pin
selection bit:
0 = Nomal I/O P0.2
pin enable
1 = RESETB
Pin enable
NOTES:
1. The smart option value of 3DH determine P3.3-P3.6 initial port mode when cpu is reset.
The value of smart option is the same as normal setting value. You can refer to user manual chapter "9. I/O PORT".
2. The unused bits of 3CH, 3EH, 3FH must be logic "1".
3. When LVR is enabled, LVR level must be set to appropriate value, not default value.
4. You must determine P0.0-P0.2 function on smart option.
In other words, After reset operation, you cann't change P0.0-P0.2 function.
For a example, if you select xtin(P0.0)/xtout(P0.1) function by smart option, you cann't change on Normal I/O after
reset operation. Equally, RESETB(P0.2) pin function is the same.
Figure 2-2. Smart Option
2-3
ADDRESS SPACES
S3C9484/C9488/F9488
REGISTER ARCHITECTURE
The upper 64-bytes of the S3C9484/C9488/F9488's internal register file are addressed as working registers, system
control registers and peripheral control registers. The lower 192-bytes of internal register file (00H–BFH) is called the
general-purpose register space. 274 registers in this space can be accessed; 208 are available for general-purpose
use. And 19 are available for LCD display register. But if LCD driver not used, available for general-purpose use.
For many SAM88RCRI microcontrollers, the addressable area of the internal register file is further expanded by
additional register pages at space of the general purpose register (00H–BFH). This register file expansion is not
implemented in the S3C9484/C9488/F9488, however.
The specific register types and the area (in bytes) that they occupy in the internal register file are summarized in
Table 2-1.
Table 2-1. Register Type Summary
Register Type
2-4
Number of Bytes
System and peripheral registers (page0 & page1)
47
General-purpose registers (including the 16-bit
common working register area)
208
LCD display Registers (page1)
19
Total Addressable Bytes
274
S3C9484/C9488/F9488
ADDRESS SPACES
FFH
Peripheral Control
Registers
64 Bytes of
Common Area
E0H
DFH
System Control
Registers
D0H
CFH
Working Registers
C0H
BFH
General Purpose
Register File
and Stack Area
192 Bytes
~
15H
LCD Display Registers
&
Peripheral Register
22 Bytes
00H
00H
Page 0
Page 1
Figure 2-3. Internal Register File Organization
2-5
ADDRESS SPACES
S3C9484/C9488/F9488
COMMON WORKING REGISTER AREA (C0H–CFH)
The SAM88RCRI register architecture provides an efficient method of working register addressing that takes full
advantage of shorter instruction formats to reduce execution time.
This 16-byte address range is called common area. That is, locations in this area can be used as working registers
by operations that address any location on any page in the register file.
Registers are addressed either as a single 8-bit register or as a paired 16-bit register. In 16-bit register pairs, the
address of the first 8-bit register is always an even number and the address of the next register is an odd number.
The most significant byte of the 16-bit data is always stored in the even-numbered register; the least significant byte
is always stored in the next (+ 1) odd-numbered register.
MSB
LSB
Rn
Rn+1
n = Even address
Figure 2-4. 16-Bit Register Pairs
2-6
S3C9484/C9488/F9488
ADDRESS SPACES
SYSTEM STACK
S3F9-series microcontrollers use the system stack for subroutine calls and returns and to store data. The PUSH
and POP instructions are used to control system stack operations. The S3C9484/C9488/F9488 architecture
supports stack operations in the internal register file.
Stack Operations
Return addresses for procedure calls and interrupts and data are stored on the stack. The contents of the PC are
saved to stack by a CALL instruction and restored by the RET instruction. When an interrupt occurs, the contents of
the PC and the FLAGS registers are pushed to the stack. The IRET instruction then pops these values back to their
original locations. The stack address always decrements before a push operation and increments after a pop
operation. The stack pointer (SP) always points to the stack frame stored on the top of the stack, as shown in
Figure 2-5.
High Address
PCL
PCL
Top of
stack
PCH
PCH
Stack contents
after a call
instruction
Top of
stack
Flags
Low Address
Stack contents
after an
interrupt
Figure 2-5. Stack Operations
Stack Pointer (SP)
Register location D9H contains the 8-bit stack pointer (SP) that is used for system stack operations. After a reset,
the SP value is undetermined.
Because only internal memory space is implemented in the S3C9484/C9488/F9488, the SP must be initialized to an
8-bit value in the range 00H–0C0H.
NOTE
In case a Stack Pointer is initialized to 00H, it is decreased to FFH when stack operation starts. This
means that a Stack Pointer access invalid stack area. We recommend that a stack pointer is initialized to
C0H to set upper address of stack to BFH.
2-7
ADDRESS SPACES
S3C9484/C9488/F9488
+ PROGRAMMING TIP — Standard Stack Operations Using PUSH and POP
The following example shows you how to perform stack operations in the internal register file using PUSH and POP
instructions:
LD
SP,#0C0H
; SP ← C0H (Normally, the SP is set to C0H by the
;
initialization routine)
SYM
R15
20H
R3
;
;
;
;
Stack address 0BFH
Stack address 0BEH
Stack address 0BDH
Stack address 0BCH
R3
20H
R15
SYM
;
;
;
;
R3 ← Stack address 0BCH
20H ← Stack address 0BDH
R15 ← Stack address 0BEH
SYM ← Stack address 0BFH
•
•
•
PUSH
PUSH
PUSH
PUSH
←
←
←
←
SYM
R15
20H
R3
•
•
•
POP
POP
POP
POP
2-8
S3C9484/C9488/F9488
3
ADDRESSING MODES
ADDRESSING MODES
OVERVIEW
Instructions that are stored in program memory are fetched for execution using the program counter. Instructions
indicate the operation to be performed and the data to be operated on. Addressing mode is the method used to
determine the location of the data operand. The operands specified in SAM88RC instructions may be condition
codes, immediate data, or a location in the register file, program memory, or data memory.
The S3C-series instruction set supports seven explicit addressing modes. Not all of these addressing modes are
available for each instruction. The seven addressing modes and their symbols are:
— Register (R)
— Indirect Register (IR)
— Indexed (X)
— Direct Address (DA)
— Indirect Address (IA)
— Relative Address (RA)
— Immediate (IM)
3-1
ADDRESSING MODES
S3C9484/C9488/F9488
REGISTER ADDRESSING MODE (R)
In Register addressing mode (R), the operand value is the content of a specified register or register pair
(see Figure 3-1).
Working register addressing differs from Register addressing in that it uses a register pointer to specify an 8-byte
working register space in the register file and an 8-bit register within that space (see Figure 3-2).
Program Memory
8-bit Register
File Address
dst
OPCODE
One-Operand
Instruction
(Example)
Register File
Point to One
Register in Register
File
OPERAND
Value used in
Instruction Execution
Sample Instruction:
DEC
CNTR
;
Where CNTR is the label of an 8-bit register address
Figure 3-1. Register Addressing
Register File
MSB Point to
RP0 ot RP1
RP0 or RP1
Selected
RP points
to start
of working
register
block
Program Memory
4-bit
Working Register
dst
src
OPCODE
Two-Operand
Instruction
(Example)
3 LSBs
Point to the
Working Register
(1 of 8)
OPERAND
Sample Instruction:
ADD
R1, R2
; Where R1 and R2 are registers in the currently
selected working register area.
Figure 3-2. Working Register Addressing
3-2
S3C9484/C9488/F9488
ADDRESSING MODES
INDIRECT REGISTER ADDRESSING MODE (IR)
In Indirect Register (IR) addressing mode, the content of the specified register or register pair is the address of the
operand. Depending on the instruction used, the actual address may point to a register in the register file, to program
memory (ROM), or to an external memory space (see Figures 3-3 through 3-6).
You can use any 8-bit register to indirectly address another register. Any 16-bit register pair can be used to indirectly
address another memory location.
Program Memory
8-bit Register
File Address
dst
OPCODE
One-Operand
Instruction
(Example)
Register File
Point to One
Register in Register
File
ADDRESS
Address of Operand
used by Instruction
Value used in
Instruction Execution
OPERAND
Sample Instruction:
RL
@SHIFT
;
Where SHIFT is the label of an 8-bit register address
Figure 3-3. Indirect Register Addressing to Register File
3-3
ADDRESSING MODES
S3C9484/C9488/F9488
INDIRECT REGISTER ADDRESSING MODE (Continued)
Register File
Program Memory
Example
Instruction
References
Program
Memory
dst
OPCODE
REGISTER
PAIR
Points to
Register Pair
Program Memory
Sample Instructions:
CALL
JP
@RR2
@RR2
Value used in
Instruction
OPERAND
Figure 3-4. Indirect Register Addressing to Program Memory
3-4
16-Bit
Address
Points to
Program
Memory
S3C9484/C9488/F9488
ADDRESSING MODES
INDIRECT REGISTER ADDRESSING MODE (Continued)
Register File
MSB Points to
RP0 or RP1
Program Memory
4-bit
Working
Register
Address
dst
src
OPCODE
RP0 or RP1
~
~
3 LSBs
Point to the
Working Register
(1 of 8)
ADDRESS
~
Sample Instruction:
OR
R3, @R6
Value used in
Instruction
Selected
RP points
to start fo
working register
block
~
OPERAND
Figure 3-5. Indirect Working Register Addressing to Register File
3-5
ADDRESSING MODES
S3C9484/C9488/F9488
INDIRECT REGISTER ADDRESSING MODE (Concluded)
Register File
MSB Points to
RP0 or RP1
RP0 or RP1
Selected
RP points
to start of
working
register
block
Program Memory
4-bit Working
Register Address
Example Instruction
References either
Program Memory or
Data Memory
dst
src
OPCODE
Next 2-bit Point
to Working
Register Pair
(1 of 4)
LSB Selects
Value used in
Instruction
Register
Pair
Program Memory
or
Data Memory
16-Bit
address
points to
program
memory
or data
memory
OPERAND
Sample Instructions:
LCD
LDE
LDE
R5,@RR6
R3,@RR14
@RR4, R8
; Program memory access
; External data memory access
; External data memory access
Figure 3-6. Indirect Working Register Addressing to Program or Data Memory
3-6
S3C9484/C9488/F9488
ADDRESSING MODES
INDEXED ADDRESSING MODE (X)
Indexed (X) addressing mode adds an offset value to a base address during instruction execution in order to calculate
the effective operand address (see Figure 3-7). You can use Indexed addressing mode to access locations in the
internal register file or in external memory.
In short offset Indexed addressing mode, the 8-bit displacement is treated as a signed integer in the range –128 to
+127. This applies to external memory accesses only (see Figure 3-8.)
For register file addressing, an 8-bit base address provided by the instruction is added to an 8-bit offset contained in
a working register. For external memory accesses, the base address is stored in the working register pair
designated in the instruction. The 8-bit or 16-bit offset given in the instruction is then added to that base address (see
Figure 3-9).
The only instruction that supports Indexed addressing mode for the internal register file is the Load instruction (LD).
The LDC and LDE instructions support Indexed addressing mode for internal program memory and for external data
memory, when implemented.
Register File
RP0 or RP1
~
Value used in
Instruction
+
Program Memory
Two-Operand
Instruction
Example
Base Address
dst/src
x
OPCODE
3 LSBs
Point to One of the
Woking Register
(1 of 8)
~
Selected RP
points to
start of
working
register
block
OPERAND
~
~
INDEX
Sample Instruction:
LD
R0, #BASE[R1]
; Where BASE is an 8-bit immediate value
Figure 3-7. Indexed Addressing to Register File
3-7
ADDRESSING MODES
S3C9484/C9488/F9488
INDEXED ADDRESSING MODE (Continued)
Register File
MSB Points to
RP0 or RP1
RP0 or RP1
~
~
Program Memory
4-bit Working
Register Address
OFFSET
dst/src
x
OPCODE
Selected
RP points
to start of
working
register
block
NEXT 2 Bits
Point to Working
Register Pair
(1 of 4)
LSB Selects
Register
Pair
Program Memory
or
Data Memory
16-Bit
address
added to
offset
+
8-Bits
16-Bits
16-Bits
OPERAND
Value used in
Instruction
Sample Instructions:
LDC
R4, #04H[RR2]
LDE
R4,#04H[RR2]
; The values in the program address (RR2 + 04H)
are loaded into register R4.
; Identical operation to LDC example, except that
external program memory is accessed.
Figure 3-8. Indexed Addressing to Program or Data Memory with Short Offset
3-8
S3C9484/C9488/F9488
ADDRESSING MODES
INDEXED ADDRESSING MODE (Concluded)
Register File
MSB Points to
RP0 or RP1
Program Memory
RP0 or RP1
~
~
OFFSET
4-bit Working
Register Address
OFFSET
dst/src
src
OPCODE
Selected
RP points
to start of
working
register
block
NEXT 2 Bits
Point to Working
Register Pair
LSB Selects
+
8-Bits
Register
Pair
Program Memory
or
Data Memory
16-Bit
address
added to
offset
16-Bits
16-Bits
OPERAND
Value used in
Instruction
Sample Instructions:
LDC
R4, #1000H[RR2]
LDE
R4,#1000H[RR2]
; The values in the program address (RR2 + 1000H)
are loaded into register R4.
; Identical operation to LDC example, except that
external program memory is accessed.
Figure 3-9. Indexed Addressing to Program or Data Memory
3-9
ADDRESSING MODES
S3C9484/C9488/F9488
DIRECT ADDRESS MODE (DA)
In Direct Address (DA) mode, the instruction provides the operand's 16-bit memory address. Jump (JP) and Call
(CALL) instructions use this addressing mode to specify the 16-bit destination address that is loaded into the PC
whenever a JP or CALL instruction is executed.
The LDC and LDE instructions can use Direct Address mode to specify the source or destination address for Load
operations to program memory (LDC) or to external data memory (LDE), if implemented.
Program or
Data Memory
Program Memory
Upper Address Byte
Lower Address Byte
dst/src "0" or "1"
OPCODE
Memory
Address
Used
LSB Selects Program
Memory or Data Memory:
"0" = Program Memory
"1" = Data Memory
Sample Instructions:
LDC
R5,1234H
LDE
R5,1234H
; The values in the program address (1234H)
are loaded into register R5.
; Identical operation to LDC example, except that
external program memory is accessed.
Figure 3-10. Direct Addressing for Load Instructions
3-10
S3C9484/C9488/F9488
ADDRESSING MODES
DIRECT ADDRESS MODE (Continued)
Program Memory
Next OPCODE
Memory
Address
Used
Upper Address Byte
Lower Address Byte
OPCODE
Sample Instructions:
JP
CALL
C,JOB1
DISPLAY
; Where JOB1 is a 16-bit immediate address
; Where DISPLAY is a 16-bit immediate address
Figure 3-11. Direct Addressing for Call and Jump Instructions
3-11
ADDRESSING MODES
S3C9484/C9488/F9488
INDIRECT ADDRESS MODE (IA)
In Indirect Address (IA) mode, the instruction specifies an address located in the lowest 256 bytes of the program
memory. The selected pair of memory locations contains the actual address of the next instruction to be executed.
Only the CALL instruction can use the Indirect Address mode.
Because the Indirect Address mode assumes that the operand is located in the lowest 256 bytes of program
memory, only an 8-bit address is supplied in the instruction; the upper bytes of the destination address are assumed
to be all zeros.
Program Memory
Next Instruction
LSB Must be Zero
Current
Instruction
dst
OPCODE
Lower Address Byte
Upper Address Byte
Program Memory
Locations 0-255
Sample Instruction:
CALL
#40H
; The 16-bit value in program memory addresses 40H
and 41H is the subroutine start address.
Figure 3-12. Indirect Addressing
3-12
S3C9484/C9488/F9488
ADDRESSING MODES
RELATIVE ADDRESS MODE (RA)
In Relative Address (RA) mode, a twos-complement signed displacement between – 128 and + 127 is specified in
the instruction. The displacement value is then added to the current PC value. The result is the address of the next
instruction to be executed. Before this addition occurs, the PC contains the address of the instruction immediately
following the current instruction.
The instructions that support RA addressing is JR.
Program Memory
Next OPCODE
Program Memory
Address Used
Displacement
OPCODE
Current Instruction
Current
PC Value
+
Signed
Displacement Value
Sample Instructions:
JR
ULT,$+OFFSET
; Where OFFSET is a value in the range +127 to -128
Figure 3-13. Relative Addressing
3-13
ADDRESSING MODES
S3C9484/C9488/F9488
IMMEDIATE MODE (IM)
In Immediate (IM) addressing mode, the operand value used in the instruction is the value supplied in the operand
field itself. Immediate addressing mode is useful for loading constant values into registers.
Program Memory
OPERAND
OPCODE
(The Operand value is in the instruction)
Sample Instruction:
LD
R0,#0AAH
Figure 3-14. Immediate Addressing
3-14
S3C9484/C9488/F9488
4
CONTROL REGISTER
CONTROL REGISTERS
OVERVIEW
Control register descriptions are arranged in alphabetical order according to register mnemonic. More detailed
information about control registers is presented in the context of the specific peripheral hardware descriptions in Part
II of this manual.
The locations and read/write characteristics of all mapped registers in the S3C9484/C9488/F9488 register file are
listed in Table 4-1. The hardware reset value for each mapped register is described in Chapter 8, “RESET and PowerDown."
Table 4-1. System and Peripheral Registers
Register Name
Mnemonic
Decimal
Hex
R/W
LCD control register
LCDCON
208
D0H
R/W
LCD drive voltage control register
LCDVOL
209
D1H
R/W
Port 0 pull-up resistor control register
P0PUR
210
D2H
R/W
Port 1 pull-up resistor control register
P1PUR
211
D3H
R/W
CLKCON
212
D4H
R/W
FLAGS
213
D5H
R/W
Oscillator control register
OSCCON
214
D6H
R/W
STOP control register
STPCON
215
D7H
R/W
Voltage Level Detector control register
VLDCON
216
D8H
R/W
SP
217
D9H
R/W
System Clock control register
System flags register
Stack pointer register
Location DAH - DBH are not mapped
Basic timer control register
BTCON
220
DCH
R/W
Basic timer counter register
BTCNT
221
DDH
R
223
DFH
R/W
Location DEH is not mapped
System mode register
SYM
4-1
CONTROL REGISTERS
S3C9484/C9488/F9488
Table 4-1. System and Peripheral Registers (continued)
Register Name
Mnemonic
Decimal
Hex
R/W
Port 0 Data Register
P0
224
E0H
R/W
Port 1 Data Register
P1
225
E1H
R/W
Port 2 Data Register
P2
226
E2H
R/W
Port 3 Data Register
P3
227
E3H
R/W
Port 4 Data Register
P4
228
E4H
R/W
Watchdog timer control register
WDTCON
229
E5H
R/W
Port 0 control High register
P0CONH
230
E6H
R/W
Port 0 control Low register
P0CONL
231
E7H
R/W
Port 1 control High register
P1CONH
232
E8H
R/W
Port 1 control Low register
P1CONL
233
E9H
R/W
Port 2 control High register
P2CONH
234
EAH
R/W
Port 2 control Low register
P2CONL
235
EBH
R/W
Port 3 control High register
P3CONH
236
ECH
R/W
Port 3 control Low register
P3CONL
237
EDH
R/W
Port 3 interrupt control register
P3INT
238
EEH
R/W
Port 3 interrupt pending register
P3PND
239
EFH
R/W
Port 4 control High register
P4CONH
240
F0H
R/W
Port 4 control Low register
P4CONL
241
F1H
R/W
Timer A/Timer B interrupt pending register
TINTPND
242
F2H
RW
Timer A control register
TACON
243
F3H
R/W
Timer A counter register
TACNT
244
F4H
R
TADATA
245
F5H
R/W
Timer B data register(high byte)
TBDATAH
246
F6H
R/W
Timer B data register(low byte)
TBDATAL
247
F7H
R/W
Timer B control register
TBCON
248
F8H
R/W
Watch timer control register
WTCON
249
F9H
R/W
A/D converter data register(high byte)
ADDATAH
250
FAH
R
A/D converter data register(low byte)
ADDATAL
251
FBH
R
ADCON
252
FCH
R/W
UART control register
UARTCON
253
FDH
R/W
UART pending register
UARTPND
254
FEH
R/W
UDATA
255
FFH
R/W
Timer A data register
A/D converter control register
UART data register
4-2
S3C9484/C9488/F9488
CONTROL REGISTER
Table 4-2. LCD display Register and Peripheral Registers (page 1)
Register Name
Mnemonic
Decimal
Hex
R/W
LCD Display RAM
−
0
00H
R/W
LCD Display RAM
−
1
01H
R/W
LCD Display RAM
−
2
02H
R/W
LCD Display RAM
−
3
03H
R/W
LCD Display RAM
−
4
04H
R/W
LCD Display RAM
−
5
05H
R/W
LCD Display RAM
−
6
06H
R/W
LCD Display RAM
−
7
07H
R/W
LCD Display RAM
−
8
08H
R/W
LCD Display RAM
−
9
09H
R/W
LCD Display RAM
−
10
0AH
R/W
LCD Display RAM
−
11
0BH
R/W
LCD Display RAM
−
12
0CH
R/W
LCD Display RAM
−
13
0DH
R/W
LCD Display RAM
−
14
0EH
R/W
LCD Display RAM
−
15
0FH
R/W
LCD Display RAM
−
16
10H
R/W
LCD Display RAM
−
17
11H
R/W
LCD Display RAM
−
18
12H
R/W
Location 13H is not mapped
UART baud rate data register (high byte)
BRDATAH
20
14H
R/W
UART baud rate data register (low byte)
BRDATAL
21
15H
R/W
NOTE:
When you use the SK-1000(SK-8xx) MDS , the BRDATAH/BRDATAL of mnemonic isn’t showed on the system
register window of MDS application program, because BRDATAH/BRDATAL is located on the general register
page1.
4-3
CONTROL REGISTERS
S3C9484/C9488/F9488
Name of individual
bit or related bits
Bit number(s) that is/are appended to
the register name for bit addressing
Register ID
Register address
(hexadecimal)
Register name
FLAGS - System Flags Register
Bit Identifier
RESET Value
Read/Write
.7
.6
.5
D5H
.7
.6
.5
.4
x
R/W
x
R/W
x
R/W
x
R/W
.3
.2
.0
Carry Flag (C)
0
Operation does not generate a carry or borrow condition
0
Operation generates carry-out or borrow into high-order bit 7
Zero Flag (Z)
0
Operation result is a non-zero value
0
Operation result is zero
Sign Flag (S)
0
Operation generates positive number (MSB = "0")
0
Operation generates negative number (MSB = "1")
R = Read-only
W = Write-only
R/W = Read/write
'-' = Not used
Description of the
effect of specific
bit settings
RESET value notation:
'-' = Not used
'x' = Undetermined value
'0' = Logic zero
'1' = Logic one
Figure 4-1. Register Description Format
4-4
.1
Bit number:
MSB = Bit 7
LSB = Bit 0
S3C9484/C9488/F9488
CONTROL REGISTER
ADCON — A/D Converter Control Register
FCH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.4
A/D Input Pin Selection Bits
0
0
0
0
ADC0
0
0
0
1
ADC1
0
0
1
0
ADC2
0
0
1
1
ADC3
0
1
0
0
ADC4
0
1
0
1
ADC5
0
1
1
0
ADC6
0
1
1
1
ADC7
1
0
0
0
ADC8
Other value
.3
.2-.1
.0
NOTE:
Connected with GND internally
End-Of-Conversion (EOC) Status Bit
0
A/D conversion is in progress
1
A/D conversion complete
Clock Source Selection Bits
0
0
fxx/16 (fosc ≤ 8MHz)
0
1
fxx/8 (fosc ≤ 8MHz)
1
0
fxx/4 (fosc ≤ 8MHz)
1
1
fxx (fosc ≤ 2.5MHz)
A/D conversion Start Bit
0
Disable operation
1
Start operation
Maximum ADC clock input = 4MHz.
4-5
CONTROL REGISTERS
S3C9484/C9488/F9488
BTCON — Basic Timer Control Register
DCH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
–
–
–
–
0
0
0
0
Read/Write
–
–
–
–
R/W
R/W
R/W
R/W
.7-.4
Not used for the S3C9484/C9488/F9488
.3-.2
Basic Timer Input Clock Selection Bits
.1
.0
0
0
fxx/4096 (3)
0
1
fxx/1024
1
0
fxx/128
1
1
Not used
Basic Timer Counter Clear Bit (1)
0
No effect
1
Clear the basic timer counter value
Clock Frequency Divider Clear Bit for Basic Timer (2)
0
No effect
1
Clear both clock frequency dividers
NOTES:
1. When you write a “1” to BTCON.1, the basic timer counter value is cleared to "00H". Immediately following the write
operation, the BTCON.1 value is automatically cleared to “0”.
2. When you write a "1" to BTCON.0, the corresponding frequency divider is cleared to "00H". Immediately following the
write operation, the BTCON.0 value is automatically cleared to "0".
3. The fxx is selected clock for system (main OSC. or sub OSC).
4-6
S3C9484/C9488/F9488
CONTROL REGISTER
CLKCON — System Clock Control Register
D4H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
–
–
0
0
–
–
–
R/W
–
–
R/W
R/W
–
–
–
Read/Write
.7
Oscillator IRQ Wake-up Function Enable Bit
0
Enable IRQ for main system oscillator wake-up function
1
Disable IRQ for main system oscillator wake-up function
.6-.5
Not used for the S3C9484/C9488/F9488
.4-.3
CPU Clock (System Clock) Selection Bits (note)
.2-.0
NOTE:
0
0
fxx/16
0
1
fxx/8
1
0
fxx/2
1
1
fxx/1 (non-divided)
Not used for the S3C9484/C9488/F9488
After a reset, the slowest clock (divided by 16) is selected as the system clock. To select faster clock speeds, load
the appropriate values to CLKCON.3 and CLKCON.4.
4-7
CONTROL REGISTERS
S3C9484/C9488/F9488
FLAGS — System Flags Register
D5H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET /Value
x
x
x
x
–
–
–
–
R/W
R/W
R/W
R/W
–
–
–
–
Read/Write
.7
.6
.5
.4
.3–.0
4-8
Carry Flag (C)
0
Operation does not generate a carry or borrow condition
1
Operation generates a carry-out or borrow into high-order bit 7
Zero Flag (Z)
0
Operation result is a non-zero value
1
Operation result is zero
Sign Flag (S)
0
Operation generates a positive number (MSB = "0")
1
Operation generates a negative number (MSB = "1")
Overflow Flag (V)
0
Operation result is ≤ + 127 or _ – 128
1
Operation result is > + 127 or < – 128
Not used for the S3C9484/C9488/F9488
S3C9484/C9488/F9488
CONTROL REGISTER
LCDCON — LCD Control Register
D0H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
–
0
0
0
0
0
0
R/W
–
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7
LCD Module enable/disable Bit
0
Disable LCD Module
1
Enable LCD Module
.6
Not used for the S3C9484/C9488/F9488
.5-.4
LCD Duty Selection Bit
.3-.2
.1-.0
0
0
1/8 duty , 1/4 bias
0
1
1/4 duty , 1/3 bias
1
x
Static
LCD Dot On/Off Control Bits
0
0
Off signal
0
1
On signal
1
x
Normal display
LCD Clock Signal Selection Bits
0
0
fw/27
0
1
fw/26
1
0
fw/25
1
1
fw/24
4-9
CONTROL REGISTERS
S3C9484/C9488/F9488
LCDVOL — LCD Voltage Control Register
D1H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
–
–
–
0
0
0
0
R/W
–
–
–
R/W
R/W
R/W
R/W
Read/Write
.7
LCD Contrast Control Enable/Disable Bit
0
Disable LCD Contrast Module
1
Enable LCD Contrast Module
.6-.4
Not used for the S3C9484/C9488/F9488
.3-.0
LCD Segment/Port Output Selection Bits:
4-10
0
0
0
0
1/16 step (The dimmest level)
0
0
0
1
2/16 step
0
0
1
0
3/16 step
0
0
1
1
4/16 step
0
1
0
0
5/16 step
0
1
0
1
6/16 step
0
1
1
0
7/16 step
0
1
1
1
8/16 step
1
0
0
0
9/16 step
1
0
0
1
10/16 step
1
0
1
0
11/16 step
1
0
1
1
12/16 step
1
1
0
0
13/16 step
1
1
0
1
14/16 step
1
1
1
0
15/16 step
1
1
1
1
16/16 step
S3C9484/C9488/F9488
CONTROL REGISTER
OSCCON — Oscillator Control Register
D6H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
–
–
–
–
0
0
–
0
Read/Write
–
–
–
–
R/W
R/W
–
R/W
.7-.4
Not used for the S3C9484/C9488/F9488
.3
Main System Oscillator Control Bit
.2
0
Main System Oscillator RUN
1
Main System Oscillator STOP
Sub System Oscillator Control Bit
0
Sub system oscillator RUN
1
Sub system oscillator STOP
.1
Not used for the S3C9484/C9488/F9488
.0
System Clock Selection Bit
0
Main oscillator select
1
Subsystem oscillator select
4-11
CONTROL REGISTERS
S3C9484/C9488/F9488
P0CONH — Port 0 Control Register (High Byte)
E6H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.6
.5-.4
.3–.2
.1–.0
NOTE:
4-12
P0.7/COM4/ADC4
0
0
Input mode
0
1
Alternative function; ADC4 input
1
0
Push-pull output
1
1
Alternative function; LCD COM4 signal output
P0.6/COM5/ADC5
0
0
Input mode
0
1
Alternative function; ADC5 input
1
0
Push-pull output
1
1
Alternative function; LCD COM5 signal output
P0.5/ COM6/ADC6
0
0
Input mode
0
1
Alternative function; ADC6 input
1
0
Push-pull output
1
1
Alternative function; LCD COM6 signal output
P0.4/ COM7/ADC7
0
0
Input mode
0
1
Alternative function; ADC7 input
1
0
Push-pull output
1
1
Alternative function; LCD COM7 signal output
When users use Port 0, users must be care of the pull-up resistance status.
S3C9484/C9488/F9488
CONTROL REGISTER
P0CONL — Port 0 Control Register (Low Byte)
E7H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7–.6
.5–.4
.3–.2
.1–.0
P0.3/ADC8
0
x
Input mode
1
0
Push-pull output
1
x
Alternative function; ADC8 input
0
x
Input mode
1
x
Push-pull output
0
x
Input mode
1
x
Push-pull output
0
x
Input mode
1
x
Push-pull output
P0.2
P0.1
P0.0
NOTES:
1. If you selected the Xtin/Xtout function at Smart option, no relations to P0CONL.3 -.0 bit value. But if you selected the
normal I/O function at Smart option, the reset value of P0CONL.3 -.0 bits are ‘0000’.
2. When users use Port 0, users must be care of the pull-up resistance status.
4-13
CONTROL REGISTERS
S3C9484/C9488/F9488
P0PUR — Port 0 Pull-up Resistor Control Register
D2H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7
.6
.5
.4
.3
.2
.1
.0
4-14
P0.7 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P0.6 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P0.5 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P0.4 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P0.3 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P0.2 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P0.1 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P0.0 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
S3C9484/C9488/F9488
CONTROL REGISTER
P1CONH — Port 1 Control Register (High Byte)
E8H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.6
.5-.4
.3-.2
.1-.0
NOTE:
P1.7/COM0
0
x
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD COM0 signal output
P1.6/COM1
0
x
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD COM1 signal output
P1.5/COM2
0
x
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD COM2 signal output
P1.4/COM3
0
x
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD COM3 signal output
When users use Port 1, users must be care of the pull-up resistance status.
4-15
CONTROL REGISTERS
S3C9484/C9488/F9488
P1CONL — Port 1 Control Register (Low Byte)
E9H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.6
.5-.4
.3-.2
.1-.0
NOTE:
4-16
P1.3/ADC0
0
X
Input mode
1
0
Push-pull output
1
1
Alternative function; ADC0 input
P1.2/ADC1
0
X
Input mode
1
0
Push-pull output
1
1
Alternative function; ADC1 input
P1.1/ADC2/BUZ
0
0
Input mode
0
1
Alternative function; BUZ output
1
0
Push-pull output
1
1
Alternative function; ADC2 input
P1.0/ADC3/TBPWM
0
0
Input mode
0
1
Alternative function; TBPWM output
1
0
Push-pull output
1
1
Alternative function; ADC3 input
When users use Port 1, users must be care of the pull-up resistance status.
S3C9484/C9488/F9488
CONTROL REGISTER
P1PUR — Port 1 Pull-up Resistor Control Register
D3H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7
.6
.5
.4
.3
.2
.1
.0
P1.7 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P1.6 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P1.5 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P1.4 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P1.3 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P1.2 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P1.1 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
P1.0 Pull-up Resistor Enable/Disable
0
Pull-up resistor disable
1
Pull-up resistor enable
4-17
CONTROL REGISTERS
S3C9484/C9488/F9488
P2CONH — Port 2 Control Register (High Byte)
EAH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7–.6
.5-.4
.3–.2
.1–.0
4-18
P2.7/SEG10
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG10 signal output
P2.6/SEG9
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG9 signal output
P2.5/SEG8
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG8 signal output
P2.4/SEG7
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG7 signal output
S3C9484/C9488/F9488
CONTROL REGISTER
P2CONL — Port 2 Control Register (Low Byte)
EBH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.6
.5-.4
.3-.2
.1-.0
P2.3/SEG6
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG6 signal output
P2.2/SEG5
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG5 signal output
P2.1/SEG4
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG4 signal output
P2.0/SEG3
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG3 signal output
4-19
CONTROL REGISTERS
S3C9484/C9488/F9488
P3CONH — Port 3 Control Register (High Byte)
ECH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
S
S
S
S
S
S
S
S
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7–.6
.5–.4
.3–.2
.1–.0
NOTE:
4-20
P3.6/TACAP/INT3
0
0
Input mode with pull-up; interrupt(INT3) input; TACAP
0
1
Input mode; interrupt(INT3) input; TACAP
1
x
Push-pull output
P3.5/TACK/INT2
0
0
Input mode with pull-up; interrupt(INT2) input; TACK
0
1
Input mode; interrupt(INT2) input; TACK
1
x
Push-pull output
P3.4/TAOUT(TAPWM)/INT1
0
0
Input mode with pull-up; interrupt(INT1) input
0
1
Input mode; interrupt(INT1) input
1
0
Push-pull output
1
1
Alternative function; TAOUT(TAPWM)
P3.3/SEG18/INT0
0
0
Input mode with pull-up; interrupt(INT0) input
0
1
Input mode; interrupt(INT0) input
1
0
Push-pull output
1
1
Alternative function; LCD SEG18 signal output
‘S’ of reset value mean that reset value is set by smart option.
S3C9484/C9488/F9488
CONTROL REGISTER
P3CONL — Port 3 Control Register (Low Byte)
EDH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.5
.4-.2
.1-.0
P3.2/SEG17/TXD
0
0
0
Input mode with pull-up
0
0
1
Input mode
0
1
0
Push-pull output
0
1
1
Alternative function; TXD output
1
x
x
Alternative function; LCD SEG17 signal output
P3.1/SEG16/RXD
0
0
0
Input mode with pull-up; RXD input
0
0
1
Input mode; RXD input
0
1
0
Push-pull output
0
1
1
Alternative function; RXD output
1
x
x
Alternative function; LCD SEG16 signal output
P3.0/ SEG15
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG15 signal output
4-21
CONTROL REGISTERS
P3INT —
S3C9484/C9488/F9488
Port 3 Interrupt Control Register
EEH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.6
.5-.4
.3-.2
.1-.0
4-22
P3.6/ INT3 Interrupt Enable/Disable Selection Bits
0
x
Interrupt Disable
1
0
Interrupt Enable; falling edge
1
1
Interrupt Enable; rising edge
P3.5/ INT2 Interrupt Enable/Disable Selection Bits
0
x
Interrupt Disable
1
0
Interrupt Enable; falling edge
1
1
Interrupt Enable; rising edge
P3.4/ INT1 Interrupt Enable/Disable Selection Bits
0
x
Interrupt Disable
1
0
Interrupt Enable; falling edge
1
1
Interrupt Enable; rising edge
P3.3/INT0 Interrupt Enable/Disable Selection Bits
0
x
Interrupt Disable
1
0
Interrupt Enable; falling edge
1
1
Interrupt Enable; rising edge
S3C9484/C9488/F9488
P3PND —
CONTROL REGISTER
Port 3 Interrupt Pending Register
EFH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
–
–
–
–
0
0
0
0
Read/Write
–
–
–
–
R/W
R/W
R/W
R/W
.7-.4
Not used for the S3C9484/C9488/F9488
.3
P3.6/INT3 Interrupt Pending Bit
.2
.1
.0
0
Interrupt request is not pending, pending bit clear when write 0
1
Interrupt request is pending
P3.5/INT2 Interrupt Pending Bit
0
Interrupt request is not pending, pending bit clear when write 0
1
Interrupt request is pending
P3.4/INT1 Interrupt Pending Bit
0
Interrupt request is not pending, pending bit clear when write 0
1
Interrupt request is pending
P3.3/INT0 Interrupt Pending Bit
0
Interrupt request is not pending, pending bit clear when write 0
1
Interrupt request is pending
4-23
CONTROL REGISTERS
S3C9484/C9488/F9488
P4CONH — Port 4 Control Register (High Byte)
F0H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
–
–
0
0
0
0
0
0
Read/Write
–
–
R/W
R/W
R/W
R/W
R/W
R/W
.7–.6
Not used for the S3C9484/C9488/F9488
.5-.4
P4.6/SEG14
.3–.2
.1–.0
4-24
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG14 signal output
P4.5/SEG13
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG13 signal output
P4.4/SEG12
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG12 signal output
S3C9484/C9488/F9488
CONTROL REGISTER
P4CONL — Port 4 Control Register (Low Byte)
F1H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.6
.5-.4
.3-.2
.1-.0
P4.3/SEG11
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG11 signal output
P4.2/SEG2
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG2 signal output
P4.1/SEG1
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG1signal output
P4.0/SEG0
0
0
Input mode with pull-up
0
1
Input mode
1
0
Push-pull output
1
1
Alternative function; LCD SEG0 signal output
4-25
CONTROL REGISTERS
S3C9484/C9488/F9488
SP — Stack Pointer
D9H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
x
x
x
x
x
x
x
x
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7–.0
Stack Pointer Address
The stack pointer value is 8-bit stack pointer address (SP7–SP0). The SP value is
undefined following a reset.
STPCON — Stop Control Register
D7H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7–.0
STOP Control Bits
10100101
Other values
NOTE:
4-26
Enable stop instruction
Disable stop instruction
Before executing the STOP instruction, you must set this STPCON register as “10100101b”. Otherwise the STOP
instruction will not be executed.
S3C9484/C9488/F9488
CONTROL REGISTER
SYM — System Mode Register
DFH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
–
–
–
–
0
0
0
0
Read/Write
–
–
–
–
R/W
R/W
R/W
R/W
.7–.4
Not used for S3C9484/C9488/F9488
.3
Global Interrupt Enable Bit
.2–.0
NOTE:
0
Disable all interrupts
1
Enable all interrupt
Page Select Bits
0
0
0
Page 0
0
0
1
Page 1
0
1
0
Page 2 (Not used for S3C9484/C9488/F9488)
0
1
1
Page 3 (Not used for S3C9484/C9488/F9488)
1
0
0
Page 4 (Not used for S3C9484/C9488/F9488)
1
0
1
Page 5 (Not used for S3C9484/C9488/F9488)
1
1
0
Page 6 (Not used for S3C9484/C9488/F9488)
1
1
1
Page 7 (Not used for S3C9484/C9488/F9488)
Following a reset, you must enable global interrupt processing by executing an EI instruction (not by writing a "1"
to SYM.3).
4-27
CONTROL REGISTERS
S3C9484/C9488/F9488
TACON — Timer A Control Register
F3H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.6
.5-.4
.3
.2
.1
.0
4-28
Timer A Input Clock Selection Bits
0
0
fxx/1024
0
1
fxx/256
1
0
fxx/64
1
1
External clock (TACK)
Timer A Operating Mode Selection Bits
0
0
Internal mode (TAOUT mode)
0
1
Capture mode (capture on rising edge, counter running, OVF can occur)
1
0
Capture mode (capture on falling edge, counter running, OVF can occur)
1
1
PWM mode (OVF interrupt can occur)
Timer A Counter Clear Bit
0
No effect
1
Clear the timer A counter (After clearing, return to zero)
Timer A Overflow Interrupt Enable Bit
0
Disable interrupt
1
Enable interrupt
Timer A Match/Capture Interrupt Enable Bit
0
Disable interrupt
1
Enable interrupt
Timer A Start/Stop Bit
0
Stop Timer A
1
Start Timer A
S3C9484/C9488/F9488
CONTROL REGISTER
TBCON — Timer B Control Register
F8H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7–.6
.5–.4
.3
.2
.1
.0
NOTE:
Timer B Input Clock Selection Bits
0
0
fxx
0
1
fxx/2
1
0
fxx/4
1
1
fxx/8
Timer B Interrupt Time Selection Bits
0
0
Elapsed time for low data value
0
1
Elapsed time for high data value
1
0
Elapsed time for low and high data values
1
1
Invalid setting
Timer B Underflow Interrupt Enable Bit
0
Disable Interrupt
1
Enable Interrupt
Timer B Start/Stop Bit
0
Stop timer B
1
Start timer B
Timer B Mode Selection Bit
0
One-shot mode
1
Repeating mode
Timer B Output flip-flop Control Bit
0
T-FF is low
1
T-FF is high
fxx is selected clock for system.
4-29
CONTROL REGISTERS
S3C9484/C9488/F9488
TINTPND — Timer A,B Interrupt Pending Register
F2H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
–
–
–
–
–
0
0
0
Read/Write
–
–
–
–
–
R/W
R/W
R/W
.7-.3
Not used for the S3C9484/C9488/F9488
.2
Timer B Underflow Interrupt Pending Bit
.1
.0
4-30
0
No interrupt pending
0
Clear pending bit when write
1
Interrupt pending
Timer A Overflow Interrupt Pending Bit
0
No interrupt pending
0
Clear pending bit when write
1
Interrupt pending
Timer A Match/Capture Interrupt Pending Bit
0
No interrupt pending
0
Clear pending bit when write
1
Interrupt pending
S3C9484/C9488/F9488
CONTROL REGISTER
UARTCON — UART Control Register
FDH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7–.6
.5
.4
.3
Operating mode and baud rate selection bits
0
0
Mode 0: Shift Register [fxx/(16 × (16bit BRDATA + 1))]
0
1
Mode 1: 8-bit UART [fxx/(16 × (16bit BRDATA + 1))]
1
x
Mode 2: 9-bit UART [fxx/(16 × (16bit BRDATA + 1))]
Multiprocessor communication(1) enable bit (for modes 2 only)
0
Disable
1
Enable
Serial data receive enable bit
0
Disable
1
Enable
If Parity disable mode (PEN = 0),
Location of the 9th data bit to be transmitted in UART mode 2 ("0" or "1").
If Parity enable mode (PEN = 1),
even/odd parity selection bit for transmit data in UART mode 2.
0: Even parity bit generation for transmit data
1: Odd parity bit generation for transmit data
4-31
CONTROL REGISTERS
S3C9484/C9488/F9488
UARTCON — UART Control Register (Continued)
FDH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Value
Read/Write
.2
If Parity disable (PEN = 0),
location of the 9th data bit that was received in UART mode 2 ("0" or "1").
If Parity enable mode (PEN = 1),
even/odd parity selection bit for receive data in UART mode 2.
0: Even parity check for the received data
1: Odd parity check for the received data
A result of parity error will be saved in RPE bit of the UARTPND register after parity
checking of the received data.
.1
.0
Receive interrupt enable bit
0
Disable Receive interrupt
1
Enable Receive interrupt
Transmit interrupt enable bit
0
Disable Transmit interrupt
1
Enable Transmit Interrupt
NOTES:
1. In mode 2, if the MCE (UARTCON.5) bit is set to "1", the receive interrupt will not be activated if the received
9th data bit is "0". In mode 1, if MCE = "1”, the receive interrupt will not be activated if a valid stop bit was not
received. In mode 0, the MCE (UARTCON.5) bit should be "0".
2. The descriptions for 8-bit and 9-bit UART mode don’t include start and stop bits for serial data receive and transmit.
3. Parity enable bits, PEN, are located in the UARTPND register at address FEH.
4. Parity enable and parity error check can be available in 9-bit UART mode (Mode 2) only.
4-32
S3C9484/C9488/F9488
CONTROL REGISTER
UARTPND — UART Pending and parity control
FEH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
–
–
0
0
–
–
0
0
Read/Write
–
–
R/W
R/W
–
–
R/W
R/W
.7-.6
Not used for the S3C9484/C9488/F9488
.5
UART parity enable/disable (PEN)
.4
0
Disable
1
Enable
UART receive parity error (RPE)
0
No error
1
Parity error
.3-.2
Not used for the S3C9484/C9488/F9488
.1
UART receive interrupt pending flag
.0
0
Not pending
0
Clear pending bit (when write)
1
Interrupt pending
UART transmit interrupt pending flag
0
Not pending
0
Clear pending bit (when write)
1
Interrupt pending
NOTES:
1. In order to clear a data transmit or receive interrupt pending flag, you must write a "0" to the appropriate pending bit.
2. To avoid programming errors, we recommend using load instruction (except for L DB), when manipulating
UARTPND values.
3. Parity enable and parity error check can be available in 9-bit UART mode (Mode 2) only.
4. Parity error bit (RPE) will be refreshed whenever 8th receive data bit has been shifted.
4-33
CONTROL REGISTERS
S3C9484/C9488/F9488
VLDCON — Voltage Level Detector Control Register
D8H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
–
0
1
0
1
1
0
0
Read/Write
–
R
R/W
R/W
R/W
R/W
R/W
R/W
.7
Not used for the S3C9484/C9488/F9488
.6
VLD Level Set Bit
.5-.1
0
VDD is higher than reference voltage
1
VDD is lower than reference voltage
Reference Voltage Selection Bits
10110
VVLD = 2.4 V
10011
VVLD = 2.7 V
01110
VVLD = 3.3 V
01011
VVLD = 3.9 V
Other values
.0
4-34
Don’t care
VLD Operation Enable Bit
0
Operation off
1
Operation on
S3C9484/C9488/F9488
CONTROL REGISTER
WDTCON — Watchdog Timer Control Register
E5H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7-.4
Watchdog Timer Function Enable Bits (for System Reset)
1
0
1
0
Other values
.3-.0
Disable watchdog timer function
Enable watchdog timer function
Watchdog Timer Counter Clear Bits
1
0
1
Other values
0
Clear watchdog timer counter
Don’t care
4-35
CONTROL REGISTERS
S3C9484/C9488/F9488
WTCON — Watch Timer Control Register
F9H
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/Write
.7
.6
.5–.4
.3–.2
.1
.0
4-36
Watch Timer Clock Selection Bit
0
Main system clock divided by 27 (fxx/128)
1
Sub system clock (fxt)
Watch Timer Interrupt Enable Bit
0
Disable watch timer interrupt
1
Enable watch timer interrupt
Buzzer Signal Selection Bits
0
0
0.5 kHz buzzer (BUZ) signal output
0
1
1 kHz buzzer (BUZ) signal output
1
0
2 kHz buzzer (BUZ) signal output
1
1
4 kHz buzzer (BUZ) signal output
Watch Timer Speed Selection Bits
0
0
1.0 s Interval
0
1
0.5 s Interval
1
0
0.25 s Interval
1
1
3.91 ms Interval
Watch Timer Enable Bit
0
Disable watch timer; Clear frequency dividing circuits
1
Enable watch timer
Watch Timer Interrupt Pending Bit
0
Interrupt is not pending, Clear pending bit when write
1
Interrupt is pending
S3C9484/C9488/F9488
5
INTERRUPT STRUCTURE
INTERRUPT STRUCTURE
OVERVIEW
The SAM88RCRI interrupt structure has two basic components: a vector, and sources. The number of interrupt
sources can be serviced through an interrupt vector which is assigned in ROM address 0000H.
VECTOR
SOURCES
S1
0000H
0001H
S2
S3
Sn
NOTES:
1. The SAM88RCRI interrupt has only one vector address (0000H-0001H).
2. The numbern of Sn value is expandable.
Figure 5-1. S3C9-Series Interrupt Type
INTERRUPT PROCESSING CONTROL POINTS
Interrupt processing can be controlled in two ways: either globally or specific interrupt level and source.
The system-level control points in the interrupt structure are therefore:
— Global interrupt enable and disable (by EI and DI instructions)
— Interrupt source enable and disable settings in the corresponding peripheral control register(s)
5-1
INTERRUPT STRUCTURE
S3C9484/C9488/F9488
ENABLE/DISABLE INTERRUPT INSTRUCTIONS (EI, DI)
The system mode register, SYM (DFH), is used to enable and disable interrupt processing.
SYM.3 is the enable and disable bit for global interrupt processing respectively, by modifying SYM.3. An Enable
Interrupt (EI) instruction must be included in the initialization routine that follows a reset operation in order to enable
interrupt processing. Although you can manipulate SYM.3 directly to enable and disable interrupts during normal
operation, we recommend that you use the EI and DI instructions for this purpose.
INTERRUPT PENDING FUNCTION TYPES
When the interrupt service routine has executed, the application program's service routine must clear the appropriate
pending bit before the return from interrupt subroutine (IRET) occurs.
INTERRUPT PRIORITY
Because there is not a interrupt priority register in SAM88RCRI, the order of service is determined by a sequence of
source which is executed in interrupt service routine.
"EI" Instruction
Execution
S
RESET
R
Source Interrupts
Source Interrupt
Enable
Q
Interrupt Pending
Register
Interrpt priority
is determind by
software polling
method
Global Interrupt
Control (EI, DI instruction)
Figure 5-2. Interrupt Function Diagram
5-2
Vector Interrupt
Cycle
S3C9484/C9488/F9488
INTERRUPT STRUCTURE
INTERRUPT SOURCE SERVICE SEQUENCE
The interrupt request polling and servicing sequence is as follows:
1.
A source generates an interrupt request by setting the interrupt request pending bit to "1".
2.
The CPU generates an interrupt acknowledge signal.
3.
The service routine starts and the source's pending flag is cleared to "0" by software.
4.
Interrupt priority must be determined by software polling method.
INTERRUPT SERVICE ROUTINES
Before an interrupt request can be serviced, the following conditions must be met:
— Interrupt processing must be enabled (EI, SYM.3 = "1")
— Interrupt must be enabled at the interrupt's source (peripheral control register)
If all of the above conditions are met, the interrupt request is acknowledged at the end of the instruction cycle. The
CPU then initiates an interrupt machine cycle that completes the following processing sequence:
1.
Reset (clear to "0") the global interrupt enable bit in the SYM register (DI, SYM.3 = "0")
to disable all subsequent interrupts.
2.
Save the program counter and status flags to stack.
3.
Branch to the interrupt vector to fetch the service routine's address.
4.
Pass control to the interrupt service routine.
When the interrupt service routine is completed, an Interrupt Return instruction (IRET) occurs. The IRET restores the
PC and status flags and sets SYM.3 to "1" (EI), allowing the CPU to process the next interrupt request.
GENERATING INTERRUPT VECTOR ADDRESSES
The interrupt vector area in the ROM contains the address of the interrupt service routine. Vectored interrupt
processing follows this sequence:
1.
Push the program counter's low-byte value to stack.
2.
Push the program counter's high-byte value to stack.
3.
Push the FLAGS register values to stack.
4.
Fetch the service routine's high-byte address from the vector address 0000H.
5.
Fetch the service routine's low-byte address from the vector address 0001H.
6.
Branch to the service routine specified by the 16-bit vector address.
5-3
INTERRUPT STRUCTURE
S3C9484/C9488/F9488
S3C9484/C9488/F9488 INTERRUPT STRUCTURE
The S3C9484/C9488/F9488 microcontroller has four peripheral interrupt sources:
— Timer A match / overflow
— Timer B underflow
— P3.3 / P3.4 / P3.5 / P3.6 external interrupt
— Watch Timer interrupt
— UART transmit interrupt / receive interrupt
Vector
Pending Bits
Enable/Disable
Source
Timer A match
TINTPND.0
TACON.1
Timer A Overflow
TINTPND.1
TACON.2
Timer B underflow
TINTPND.2
TBCON.3
0000H
0001H
P3PND.0
P3INT.0-.1
SYM.3
(EI, DI)
P3PND.1
P3INT.2-.3
P3PND.2
P3.3 External Interrupt
(INT0)
P3.4 External Interrupt
(INT1)
P3.5 External Interrupt
(INT2)
P3INT.4-.5
P3.6 External Interrupt
(INT3)
P3PND.3
P3INT.6-.7
Watch Timer interrupt
WTCON.0
WTCON.1
UART transmit
UARTPND.0
UARTCON.0
UART receive
UARTPND.1
UARTCON.1
Figure 5-3. S3C9484/C9488/F9488 Interrupt Structure
5-4
S3C9484/C9488/F9488
6
SAM88RCRI INSTRUCTION SET
SAM88RCRI INSTRUCTION SET
OVERVIEW
The SAM88RCRI instruction set is designed to support the large register file. It includes a full complement of
8-bit arithmetic and logic operations. There are 41 instructions. No special I/O instructions are necessary because
I/O control and data registers are mapped directly into the register file. Flexible instructions for bit addressing, rotate,
and shift operations complete the powerful data manipulation capabilities of the SAM88RCRI instruction set.
REGISTER ADDRESSING
To access an individual register, an 8-bit address in the range 0-255 or the 4-bit address of a working register is
specified. Paired registers can be used to construct 13-bit program memory or data memory addresses. For detailed
information about register addressing, please refer to Chapter 2, "Address Spaces".
ADDRESSING MODES
There are six addressing modes: Register (R), Indirect Register (IR), Indexed (X), Direct (DA), Relative (RA), and
Immediate (IM). For detailed descriptions of these addressing modes, please refer to Chapter 3, "Addressing
Modes".
6-1
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
Table 6-1. Instruction Group Summary
Mnemonic
Operands
Instruction
Load Instructions
CLR
dst
Clear
LD
dst,src
Load
LDC
dst,src
Load program memory
LDE
dst,src
Load external data memory
LDCD
dst,src
Load program memory and decrement
LDED
dst,src
Load external data memory and decrement
LDCI
dst,src
Load program memory and increment
LDEI
dst,src
Load external data memory and increment
POP
dst
Pop from stack
PUSH
src
Push to stack
ADC
dst,src
Add with carry
ADD
dst,src
Add
CP
dst,src
Compare
DEC
dst
Decrement
INC
dst
Increment
SBC
dst,src
Subtract with carry
SUB
dst,src
Subtract
AND
dst,src
Logical AND
COM
dst
Complement
OR
dst,src
Logical OR
XOR
dst,src
Logical exclusive OR
Arithmetic Instructions
Logic Instructions
6-2
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
Table 6-1. Instruction Group Summary (Continued)
Mnemonic
Operands
Instruction
Program Control Instructions
CALL
dst
IRET
Call procedure
Interrupt return
JP
cc,dst
Jump on condition code
JP
dst
Jump unconditional
JR
cc,dst
Jump relative on condition code
RET
Return
Bit Manipulation Instructions
TCM
dst,src
Test complement under mask
TM
dst,src
Test under mask
Rotate and Shift Instructions
RL
dst
Rotate left
RLC
dst
Rotate left through carry
RR
dst
Rotate right
RRC
dst
Rotate right through carry
SRA
dst
Shift right arithmetic
CPU Control Instructions
CCF
Complement carry flag
DI
Disable interrupts
EI
Enable interrupts
IDLE
Enter Idle mode
NOP
No operation
RCF
Reset carry flag
SCF
Set carry flag
STOP
Enter stop mode
6-3
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
FLAGS REGISTER (FLAGS)
The flags register FLAGS contains eight bits that describe the current status of CPU operations. Four of these bits,
FLAGS.4–FLAGS.7, can be tested and used with conditional jump instructions;
FLAGS register can be set or reset by instructions as long as its outcome does not affect the flags, such as, Load
instruction. Logical and Arithmetic instructions such as, AND, OR, XOR, ADD, and SUB can affect the Flags
register. For example, the AND instruction updates the Zero, Sign and Overflow flags based on the outcome of the
AND instruction. If the AND instruction uses the Flags register as the destination, then simultaneously, two write will
occur to the Flags register producing an unpredictable result.
System Flags Register (FLAGS)
D5H, R/W
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Carry flag (C)
Not mapped
Zero flag (Z)
Sign flag (S)
Overflow flag (V)
Figure 6-1. System Flags Register (FLAGS)
FLAG DESCRIPTIONS
Overflow Flag (FLAGS.4, V)
The V flag is set to "1" when the result of a two's-complement operation is greater than + 127 or less than – 128. It
is also cleared to "0" following logic operations.
Sign Flag (FLAGS.5, S)
Following arithmetic, logic, rotate, or shift operations, the sign bit identifies the state of the MSB of the result. A
logic zero indicates a positive number and a logic one indicates a negative number.
Zero Flag (FLAGS.6, Z)
For arithmetic and logic operations, the Z flag is set to "1" if the result of the operation is zero. For operations that
test register bits, and for shift and rotate operations, the Z flag is set to "1" if the result is logic zero.
Carry Flag (FLAGS.7, C)
The C flag is set to "1" if the result from an arithmetic operation generates a carry-out from or a borrow to the bit 7
position (MSB). After rotate and shift operations, it contains the last value shifted out of the specified register.
Program instructions can set, clear, or complement the carry flag.
6-4
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
INSTRUCTION SET NOTATION
Table 6-2. Flag Notation Conventions
Flag
Description
C
Carry flag
Z
Zero flag
S
Sign flag
V
Overflow flag
0
Cleared to logic zero
1
Set to logic one
*
Set or cleared according to operation
–
Value is unaffected
x
Value is undefined
Table 6-3. Instruction Set Symbols
Symbol
Description
dst
Destination operand
src
Source operand
@
Indirect register address prefix
PC
Program counter
FLAGS
Flags register (D5H)
#
Immediate operand or register address prefix
H
Hexadecimal number suffix
D
Decimal number suffix
B
Binary number suffix
opc
Opcode
6-5
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
Table 6-4. Instruction Notation Conventions
Notation
cc
Actual Operand Range
Condition code
See list of condition codes in Table 6-6.
r
Working register only
Rn (n = 0–15)
rr
Working register pair
RRp (p = 0, 2, 4, ..., 14)
R
Register or working register
reg or Rn (reg = 0–255, n = 0–15)
Register pair or working register pair
reg or RRp (reg = 0–254, even number only, where
p = 0, 2, ..., 14)
Ir
Indirect working register only
@Rn (n = 0–15)
IR
Indirect register or indirect working register
@Rn or @reg (reg = 0–255, n = 0–15)
Irr
Indirect working register pair only
@RRp (p = 0, 2, ..., 14)
Indirect register pair or indirect working
register pair
@RRp or @reg (reg = 0–254, even only, where
p = 0, 2, ..., 14)
Indexed addressing mode
#reg[Rn] (reg = 0–255, n = 0–15)
XS
Indexed (short offset) addressing mode
#addr[RRp] (addr = range – 128 to + 127, where
p = 0, 2, ..., 14)
XL
Indexed (long offset) addressing mode
#addr [RRp] (addr = range 0–8191, where
p = 0, 2, ..., 14)
DA
Direct addressing mode
addr (addr = range 0–8191)
RA
Relative addressing mode
addr (addr = number in the range + 127 to – 128 that is
an offset relative to the address of the next instruction)
IM
Immediate addressing mode
#data (data = 0–255)
RR
IRR
X
6-6
Description
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
Table 6-5. Opcode Quick Reference
OPCODE MAP
LOWER NIBBLE (HEX)
–
0
1
2
3
4
5
6
U
0
DEC
R1
DEC
IR1
ADD
r1,r2
ADD
r1,Ir2
ADD
R2,R1
ADD
IR2,R1
ADD
R1,IM
P
1
RLC
R1
RLC
IR1
ADC
r1,r2
ADC
r1,Ir2
ADC
R2,R1
ADC
IR2,R1
ADC
R1,IM
P
2
INC
R1
INC
IR1
SUB
r1,r2
SUB
r1,Ir2
SUB
R2,R1
SUB
IR2,R1
SUB
R1,IM
E
3
JP
IRR1
SBC
r1,r2
SBC
r1,Ir2
SBC
R2,R1
SBC
IR2,R1
SBC
R1,IM
R
4
OR
r1,r2
OR
r1,Ir2
OR
R2,R1
OR
IR2,R1
OR
R1,IM
5
POP
R1
POP
IR1
AND
r1,r2
AND
r1,Ir2
AND
R2,R1
AND
IR2,R1
AND
R1,IM
N
6
COM
R1
COM
IR1
TCM
r1,r2
TCM
r1,Ir2
TCM
R2,R1
TCM
IR2,R1
TCM
R1,IM
I
7
PUSH
R2
PUSH
IR2
TM
r1,r2
TM
r1,Ir2
TM
R2,R1
TM
IR2,R1
TM
R1,IM
B
8
B
9
L
A
E
B
CLR
R1
CLR
IR1
C
RRC
R1
RRC
IR1
LDC
r1,Irr2
H
D
SRA
R1
SRA
IR1
LDC
r2,Irr1
E
E
RR
R1
RR
IR1
X
F
7
LD
r1, x, r2
RL
R1
RL
IR1
LD
r2, x, r1
CP
r1,r2
CP
r1,Ir2
CP
R2,R1
CP
IR2,R1
CP
R1,IM
LDC
r1, Irr2, xL
XOR
r1,r2
XOR
r1,Ir2
XOR
R2,R1
XOR
IR2,R1
XOR
R1,IM
LDC
r2, Irr2, xL
LDCD
r1,Irr2
LDCI
r1,Irr2
LD
r1, Ir2
LD
IR1,IM
LD
Ir1, r2
LD
R2,R1
LD
R2,IR1
LD
R1,IM
LDC
r1, Irr2, xs
CALL
IRR1
LD
IR2,R1
CALL
DA1
LDC
r2, Irr1, xs
6-7
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
Table 6-5. Opcode Quick Reference (Continued)
OPCODE MAP
LOWER NIBBLE (HEX)
–
8
9
U
0
LD
r1,R2
P
1
¯
P
2
E
3
R
4
A
B
C
D
E
LD
r2,R1
JR
cc,RA
LD
r1,IM
JP
cc,DA
INC
r1
¯
¯
¯
¯
¯
F
5
N
6
I
7
B
8
DI
B
9
EI
L
A
RET
E
B
IRET
C
RCF
H
D
E
E
X
F
6-8
IDLE
¯
¯
¯
¯
¯
¯
¯
¯
¯
¯
¯
¯
STOP
SCF
CCF
LD
r1,R2
LD
r2,R1
JR
cc,RA
LD
r1,IM
JP
cc,DA
INC
r1
NOP
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
CONDITION CODES
The opcode of a conditional jump always contains a 4-bit field called the condition code (cc). This specifies under
which conditions it is to execute the jump. For example, a conditional jump with the condition code for "equal" after
a compare operation only jumps if the two operands are equal. Condition codes are listed in Table 6-6.
The carry (C), zero (Z), sign (S), and overflow (V) flags are used to control the operation of conditional jump
instructions.
Table 6-6. Condition Codes
Binary
Mnemonic
Description
Flags Set
0000
F
Always false
–
1000
T
Always true
–
0111 (1)
C
Carry
C=1
1111 (1)
NC
No carry
C=0
0110 (1)
Z
Zero
Z=1
1110 (1)
NZ
Not zero
Z=0
1101
PL
Plus
S=0
0101
MI
Minus
S=1
0100
OV
Overflow
V=1
1100
NOV
No overflow
V=0
0110 (1)
EQ
Equal
Z=1
1110 (1)
NE
Not equal
Z=0
1001
GE
Greater than or equal
(S XOR V) = 0
0001
LT
Less than
(S XOR V) = 1
1010
GT
Greater than
(Z OR (S XOR V)) = 0
0010
LE
Less than or equal
(Z OR (S XOR V)) = 1
1111 (1)
UGE
Unsigned greater than or equal
C=0
0111 (1)
ULT
Unsigned less than
C=1
1011
UGT
Unsigned greater than
(C = 0 AND Z = 0) = 1
0011
ULE
Unsigned less than or equal
(C OR Z) = 1
NOTES:
1. It indicates condition codes that are related to two different mnemonics but which test the same flag.
For example, Z and EQ are both true if the zero flag (Z) is set, but after an ADD instruction, Z would probably be used;
after a CP instruction, however, EQ would probably be used.
2. For operations involving unsigned numbers, the special condition codes UGE, ULT, UGT, and ULE must be used.
6-9
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
INSTRUCTION DESCRIPTIONS
This section contains detailed information and programming examples for each instruction in the SAM88RCRI
instruction set. Information is arranged in a consistent format for improved readability and for fast referencing. The
following information is included in each instruction description:
— Instruction name (mnemonic)
— Full instruction name
— Source/destination format of the instruction operand
— Shorthand notation of the instruction's operation
— Textual description of the instruction's effect
— Specific flag settings affected by the instruction
— Detailed description of the instruction's format, execution time, and addressing mode(s)
— Programming example(s) explaining how to use the instruction
6-10
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
ADC — Add with Carry
ADC
dst,src
Operation:
dst _ dst + src + c
The source operand, along with the setting of the carry flag, is added to the destination operand and
the sum is stored in the destination. The contents of the source are unaffected.
Two's-complement addition is performed. In multiple precision arithmetic, this instruction permits the
carry from the addition of low-order operands to be carried into the addition of high-order operands.
Flags:
C: Set if there is a carry from the most significant bit of the result; cleared otherwise.
Z: Set if the result is "0"; cleared otherwise.
S: Set if the result is negative; cleared otherwise.
V: Set if arithmetic overflow occurs, that is, if both operands are of the same sign and the
result is of the opposite sign; cleared otherwise.
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
12
r
r
6
13
r
lr
6
14
R
R
6
15
R
IR
6
16
R
IM
3
3
Addr Mode
dst
src
Given: R1 = 10H, R2 = 03H, C flag = "1", register 01H = 20H, register 02H = 03H, and
register 03H = 0AH:
ADC
R1,R2
®
R1 = 14H, R2 = 03H
ADC
R1,@R2
®
R1 = 1BH, R2 = 03H
ADC
01H,02H
®
Register 01H = 24H, register 02H = 03H
ADC
01H,@02H
®
Register 01H = 2BH, register 02H = 03H
ADC
01H,#11H
®
Register 01H = 32H
In the first example, destination register R1 contains the value 10H, the carry flag is set to "1", and
the source working register R2 contains the value 03H. The statement "ADC R1,R2" adds 03H and
the carry flag value ("1") to the destination value 10H, leaving 14H in register R1.
6-11
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
ADD — Add
ADD
dst,src
Operation:
dst _ dst + src
The source operand is added to the destination operand and the sum is stored in the destination.
The contents of the source are unaffected. Two's-complement addition is performed.
Flags:
C:
Z:
S:
V:
Set if there is a carry from the most significant bit of the result; cleared otherwise.
Set if the result is "0"; cleared otherwise.
Set if the result is negative; cleared otherwise.
Set if arithmetic overflow occurred, that is, if both operands are of the same sign and the result
is of the opposite sign; cleared otherwise.
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
02
r
r
6
03
r
lr
6
04
R
R
6
05
R
IR
6
06
R
IM
3
3
Addr Mode
dst
src
Given: R1 = 12H, R2 = 03H, register 01H = 21H, register 02H = 03H, register 03H = 0AH:
ADD
R1,R2
®
R1 = 15H, R2 = 03H
ADD
R1,@R2
®
R1 = 1CH, R2 = 03H
ADD
01H,02H
®
Register 01H = 24H, register 02H = 03H
ADD
01H,@02H
®
Register 01H = 2BH, register 02H = 03H
ADD
01H,#25H
®
Register 01H = 46H
In the first example, destination working register R1 contains 12H and the source working register
R2 contains 03H. The statement "ADD R1,R2" adds 03H to 12H, leaving the value 15H in register
R1.
6-12
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
AND — Logical AND
AND
dst,src
Operation:
dst _ dst AND src
The source operand is logically ANDed with the destination operand. The result is stored in the
destination. The AND operation results in a "1" bit being stored whenever the corresponding bits in
the two operands are both logic ones; otherwise a "0" bit value is stored. The contents of the source
are unaffected.
Flags:
C:
Z:
S:
V:
Unaffected.
Set if the result is "0"; cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Always cleared to "0".
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
52
r
r
6
53
r
lr
6
54
R
R
6
55
R
IR
6
56
R
IM
3
3
Addr Mode
dst
src
Given: R1 = 12H, R2 = 03H, register 01H = 21H, register 02H = 03H, register 03H = 0AH:
AND
R1,R2
®
R1 = 02H, R2 = 03H
AND
R1,@R2
®
R1 = 02H, R2 = 03H
AND
01H,02H
®
Register 01H = 01H, register 02H = 03H
AND
01H,@02H
®
Register 01H = 00H, register 02H = 03H
AND
01H,#25H
®
Register 01H = 21H
In the first example, destination working register R1 contains the value 12H and the source working
register R2 contains 03H. The statement "AND R1,R2" logically ANDs the source operand 03H with
the destination operand value 12H, leaving the value 02H in register R1.
6-13
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
CALL — Call Procedure
CALL
dst
Operation:
SP
@SP
SP
@SP
PC
←
←
←
←
←
SP – 1
PCL
SP –1
PCH
dst
The current contents of the program counter are pushed onto the top of the stack. The program
counter value used is the address of the first instruction following the CALL instruction. The specified
destination address is then loaded into the program counter and points to the first instruction of a
procedure. At the end of the procedure the return instruction (RET) can be used to return to the
original program flow. RET pops the top of the stack back into the program counter.
Flags:
No flags are affected.
Format:
opc
opc
Examples:
dst
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
3
14
F6
DA
2
12
F4
IRR
Given: R0 = 15H, R1 = 21H, PC = 1A47H, and SP = 0B2H:
CALL
1521H
®
SP = 0B0H
(Memory locations 00H = 1AH, 01H = 4AH, where 4AH
is the address that follows the instruction.)
CALL
@RR0
®
SP = 0B0H (00H = 1AH, 01H = 49H)
In the first example, if the program counter value is 1A47H and the stack pointer contains the value
0B2H, the statement "CALL 1521H" pushes the current PC value onto the top of the stack. The
stack pointer now points to memory location 00H. The PC is then loaded with the value 1521H, the
address of the first instruction in the program sequence to be executed.
If the contents of the program counter and stack pointer are the same as in the first example, the
statement "CALL @RR0" produces the same result except that the 49H is stored in stack location
01H (because the two-byte instruction format was used). The PC is then loaded with the value
1521H, the address of the first instruction in the program sequence to be executed.
6-14
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
CCF — Complement Carry Flag
CCF
Operation:
C _ NOT C
The carry flag (C) is complemented. If C = "1", the value of the carry flag is changed to logic zero; if
C = "0", the value of the carry flag is changed to logic one.
Flags:
C: Complemented.
No other flags are affected.
Format:
opc
Example:
Bytes
Cycles
Opcode
(Hex)
1
4
EF
Given: The carry flag = "0":
CCF
If the carry flag = "0", the CCF instruction complements it in the FLAGS register (0D5H), changing
its value from logic zero to logic one.
6-15
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
CLR — Clear
CLR
dst
Operation:
dst _ "0"
The destination location is cleared to "0".
Flags:
No flags are affected.
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
4
B0
R
4
B1
IR
Given: Register 00H = 4FH, register 01H = 02H, and register 02H = 5EH:
CLR
00H
®
Register 00H = 00H
CLR
@01H
®
Register 01H = 02H, register 02H = 00H
In Register (R) addressing mode, the statement "CLR 00H" clears the destination register 00H
value to 00H. In the second example, the statement "CLR @01H" uses Indirect Register (IR)
addressing mode to clear the 02H register value to 00H.
6-16
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
COM — Complement
COM
dst
Operation:
dst _ NOT dst
The contents of the destination location are complemented (one's complement); all "1s" are
changed to "0s", and vice-versa.
Flags:
C:
Z:
S:
V:
Unaffected.
Set if the result is "0"; cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Always reset to "0".
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
4
60
R
4
61
IR
Given: R1 = 07H and register 07H = 0F1H:
COM
R1
®
R1 = 0F8H
COM
@R1
®
R1 = 07H, register 07H = 0EH
In the first example, destination working register R1 contains the value 07H (00000111B). The
statement "COM R1" complements all the bits in R1: all logic ones are changed to logic zeros, and
vice-versa, leaving the value 0F8H (11111000B).
In the second example, Indirect Register (IR) addressing mode is used to complement the value of
destination register 07H (11110001B), leaving the new value 0EH (00001110B).
6-17
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
CP — Compare
CP
dst,src
Operation:
dst – src
The source operand is compared to (subtracted from) the destination operand, and the appropriate
flags are set accordingly. The contents of both operands are unaffected by the comparison.
Flags:
C:
Z:
S:
V:
Set if a "borrow" occurred (src > dst); cleared otherwise.
Set if the result is "0"; cleared otherwise.
Set if the result is negative; cleared otherwise.
Set if arithmetic overflow occurred, that is, if the operands were of opposite signs and the sign
of the result is of the same as the sign of the source operand; cleared otherwise.
Format:
opc
opc
opc
Examples:
1.
dst | src
src
dst
dst
Bytes
Cycles
Opcode
(Hex)
2
4
A2
r
r
6
A3
r
lr
6
A4
R
R
6
A5
R
IR
6
A6
R
IM
3
src
3
Addr Mode
dst
src
Given: R1 = 02H and R2 = 03H:
CP
R1,R2
→
Set the C and S flags
Destination working register R1 contains the value 02H and source register R2 contains the
value 03H. The statement "CP R1,R2" subtracts the R2 value (source/subtrahend) from the R1
value (destination/minuend). Because a "borrow" occurs and the difference is negative,
C and S are "1".
2.
Given: R1 = 05H and R2 = 0AH:
SKIP
CP
JP
INC
LD
R1,R2
UGE,SKIP
R1
R3,R1
In this example, destination working register R1 contains the value 05H which is less than the
contents of the source working register R2 (0AH). The statement "CP R1,R2" generates C =
"1" and the JP instruction does not jump to the SKIP location. After the statement "LD R3,R1"
executes, the value 06H remains in working register R3.
6-18
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
DEC — Decrement
DEC
dst
Operation:
dst _ dst – 1
The contents of the destination operand are decremented by one.
Flags:
C:
Z:
S:
V:
Unaffected.
Set if the result is "0"; cleared otherwise.
Set if result is negative; cleared otherwise.
Set if arithmetic overflow occurred, that is, dst value is – 128 (80H) and result value is
+ 127 (7FH); cleared otherwise.
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
4
00
R
4
01
IR
Given: R1 = 03H and register 03H = 10H:
DEC
R1
®
R1 = 02H
DEC
@R1
®
Register 03H = 0FH
In the first example, if working register R1 contains the value 03H, the statement "DEC R1"
decrements the hexadecimal value by one, leaving the value 02H. In the second example, the
statement "DEC @R1" decrements the value 10H contained in the destination register 03H by one,
leaving the value 0FH.
6-19
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
DI — Disable Interrupts
DI
Operation:
SYM (3) _ 0
Bit zero of the system mode register, SYM.3, is cleared to "0", globally disabling all interrupt
processing. Interrupt requests will continue to set their respective interrupt pending bits, but the
CPU will not service them while interrupt processing is disabled.
Flags:
No flags are affected.
Format:
opc
Example:
Bytes
Cycles
Opcode
(Hex)
1
4
8F
Given: SYM = 08H:
DI
If the value of the SYM register is 08H, the statement "DI" leaves the new value 00H in the register
and clears SYM.3 to "0", disabling interrupt processing.
6-20
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
EI — Enable Interrupts
EI
Operation:
SYM (3) _ 1
An EI instruction sets bit 3 of the system mode register, SYM.3 to "1". This allows interrupts to be
serviced as they occur. If an interrupt's pending bit was set while interrupt processing was disabled
(by executing a DI instruction), it will be serviced when you execute the EI instruction.
Flags:
No flags are affected.
Format:
opc
Example:
Bytes
Cycles
Opcode
(Hex)
1
4
9F
Given: SYM = 00H:
EI
If the SYM register contains the value 00H, that is, if interrupts are currently disabled, the statement
"EI" sets the SYM register to 08H, enabling all interrupts. (SYM.3 is the enable bit for global
interrupt processing.)
6-21
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
IDLE — Idle Operation
IDLE
Operation:
The IDLE instruction stops the CPU clock while allowing system clock oscillation to continue. Idle
mode can be released by an interrupt request (IRQ) or an external reset operation.
Flags:
No flags are affected.
Format:
opc
Example:
The instruction
IDLE
NOP
NOP
NOP
stops the CPU clock but not the system clock.
6-22
Bytes
Cycles
Opcode
(Hex)
1
4
6F
Addr Mode
dst
src
–
–
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
INC — Increment
INC
dst
Operation:
dst _ dst + 1
The contents of the destination operand are incremented by one.
Flags:
C:
Z:
S:
V:
Unaffected.
Set if the result is "0"; cleared otherwise.
Set if the result is negative; cleared otherwise.
Set if arithmetic overflow occurred, that is dst value is + 127 (7FH) and result is – 128 (80H);
cleared otherwise.
Format:
dst | opc
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
1
4
rE
r
r = 0 to F
opc
Examples:
dst
2
4
20
R
4
21
IR
Given: R0 = 1BH, register 00H = 0CH, and register 1BH = 0FH:
INC
R0
®
R0 = 1CH
INC
00H
®
Register 00H = 0DH
INC
@R0
®
R0 = 1BH, register 01H = 10H
In the first example, if destination working register R0 contains the value 1BH, the statement "INC
R0" leaves the value 1CH in that same register.
The next example shows the effect an INC instruction has on register 00H, assuming that it
contains the value 0CH.
In the third example, INC is used in Indirect Register (IR) addressing mode to increment the value of
register 1BH from 0FH to 10H.
6-23
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
IRET — Interrupt Return
IRET
IRET
Operation:
FLAGS _ @SP
SP _ SP + 1
PC _ @SP
SP _ SP + 2
SYM(2) _ 1
This instruction is used at the end of an interrupt service routine. It restores the flag register and the
program counter. It also re-enables global interrupts.
Flags:
All flags are restored to their original settings (that is, the settings before the interrupt occurred).
Format:
IRET
(Normal)
Bytes
Cycles
Opcode
(Hex)
opc
1
10
BF
12
6-24
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
JP — Jump
JP
cc,dst
(Conditional)
JP
dst
(Unconditional)
Operation:
If cc is true, PC _ dst
The conditional JUMP instruction transfers program control to the destination address if the
condition specified by the condition code (cc) is true; otherwise, the instruction following the JP
instruction is executed. The unconditional JP simply replaces the contents of the PC with the
contents of the specified register pair. Control then passes to the statement addressed by the PC.
Flags:
No flags are affected.
Format: (1)
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
3
8
ccD
DA
(2)
cc | opc
dst
cc = 0 to F
opc
dst
2
8
30
IRR
NOTES:
1. The 3-byte format is used for a conditional jump and the 2-byte format for an unconditional jump.
2. In the first byte of the three-byte instruction format (conditional jump), the condition code and the
op code are both four bits.
Examples:
Given: The carry flag (C) = "1", register 00 = 01H, and register 01 = 20H:
JP
C,LABEL_W
®
LABEL_W = 1000H, PC = 1000H
JP
@00H
®
PC = 0120H
The first example shows a conditional JP. Assuming that the carry flag is set to "1", the statement
"JP C,LABEL_W" replaces the contents of the PC with the value 1000H and transfers control to
that location. Had the carry flag not been set, control would then have passed to the statement
immediately following the JP instruction.
The second example shows an unconditional JP. The statement "JP @00" replaces the contents of
the PC with the contents of the register pair 00H and 01H, leaving the value 0120H.
6-25
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
JR — Jump Relative
JR
cc,dst
Operation:
If cc is true, PC _ PC + dst
If the condition specified by the condition code (cc) is true, the relative address is added to the
program counter and control passes to the statement whose address is now in the program counter;
otherwise, the instruction following the JR instruction is executed (See list of condition codes).
The range of the relative address is + 127, – 128, and the original value of the program counter is
taken to be the address of the first instruction byte following the JR statement.
Flags:
No flags are affected.
Format:
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
6
ccB
RA
(note)
cc | opc
dst
cc = 0 to F
NOTE:
Example:
In the first byte of the two-byte instruction format, the condition code and the op code are each
four bits.
Given: The carry flag = "1" and LABEL_X = 1FF7H:
JR
C,LABEL_X
®
PC = 1FF7H
If the carry flag is set (that is, if the condition code is true), the statement "JR C,LABEL_X" will
pass control to the statement whose address is now in the PC. Otherwise, the program instruction
following the JR would be executed.
6-26
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
LD — Load
LD
dst,src
Operation:
dst _ src
The contents of the source are loaded into the destination. The source's contents are unaffected.
Flags:
No flags are affected.
Format:
dst | opc
src | opc
src
dst
Bytes
Cycles
Opcode
(Hex)
2
4
rC
r
IM
4
r8
r
R
4
r9
R
r
2
Addr Mode
dst
src
r = 0 to F
opc
opc
opc
dst | src
src
dst
2
dst
src
3
3
4
C7
r
lr
4
D7
Ir
r
6
E4
R
R
6
E5
R
IR
6
E6
R
IM
6
D6
IR
IM
opc
src
dst
3
6
F5
IR
R
opc
dst | src
x
3
6
87
r
x [r]
opc
src | dst
x
3
6
97
x [r]
r
6-27
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
LD — Load
LD
(Continued)
Examples:
Given: R0 = 01H, R1 = 0AH, register 00H = 01H, register 01H = 20H,
register 02H = 02H, LOOP = 30H, and register 3AH = 0FFH:
6-28
LD
R0,#10H
®
R0 = 10H
LD
R0,01H
®
R0 = 20H, register 01H = 20H
LD
01H,R0
®
Register 01H = 01H, R0 = 01H
LD
R1,@R0
®
R1 = 20H, R0 = 01H
LD
@R0,R1
®
R0 = 01H, R1 = 0AH, register 01H = 0AH
LD
00H,01H
®
Register 00H = 20H, register 01H = 20H
LD
02H,@00H
®
Register 02H = 20H, register 00H = 01H
LD
00H,#0AH
®
Register 00H = 0AH
LD
@00H,#10H
®
Register 00H = 01H, register 01H = 10H
LD
@00H,02H
®
Register 00H = 01H, register 01H = 02, register 02H = 02H
LD
R0,#LOOP[R1]
®
R0 = 0FFH, R1 = 0AH
LD
#LOOP[R0],R1
®
Register 31H = 0AH, R0 = 01H, R1 = 0AH
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
LDC/LDE — Load Memory
LDC/LDE
dst,src
Operation:
dst _ src
This instruction loads a byte from program or data memory into a working register or vice-versa. The
source values are unaffected. LDC refers to program memory and LDE to data memory. The
assembler makes "Irr" or "rr" values an even number for program memory and odd an odd number for
data memory.
Flags:
No flags are affected.
Format:
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
src
1.
opc
dst | src
2
10
C3
r
Irr
2.
opc
src | dst
2
10
D3
Irr
r
3.
opc
dst | src
XS
3
12
E7
r
XS [rr]
4.
opc
src | dst
XS
3
12
F7
XS [rr]
r
5.
opc
dst | src
XLL
XLH
4
14
A7
r
XL [rr]
6.
opc
src | dst
XLL
XLH
4
14
B7
XL [rr]
r
7.
opc
dst | 0000
DA L
DA H
4
14
A7
r
DA
8.
opc
src | 0000
DA L
DA H
4
14
B7
DA
r
9.
opc
dst | 0001
DA L
DA H
4
14
A7
r
DA
10.
opc
src | 0001
DA L
DA H
4
14
B7
DA
r
NOTES:
1. The source (src) or working register pair [rr] for formats 5 and 6 cannot use register pair 0–1.
2. For formats 3 and 4, the destination address "XS [rr]" and the source address "XS [rr]" are each one
byte.
3. For formats 5 and 6, the destination address "XL [rr]" and the source address "XL [rr]" are each two
bytes.
4. The DA and r source values for formats 7 and 8 are used to address program memory; the second set
of values, used in formats 9 and 10, are used to address data memory.
6-29
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
LDC/LDE — Load Memory
LDC/LDE
(Continued)
Examples:
Given: R0 = 11H, R1 = 34H, R2 = 01H, R3 = 04H, R4 = 00H, R5 = 60H; Program memory
locations 0061 = AAH, 0103H = 4FH, 0104H = 1A, 0105H = 6DH, and 1104H = 88H.
External data memory locations 0061H = BBH, 0103H = 5FH, 0104H = 2AH, 0105H = 7DH,
and 1104H = 98H:
LDC
R0,@RR2
; R0 _ contents of program memory location 0104H
; R0 = 1AH, R2 = 01H, R3 = 04H
LDE
R0,@RR2
; R0 _ contents of external data memory location 0104H
; R0 = 2AH, R2 = 01H, R3 = 04H
LDC (note) @RR2,R0
; 11H (contents of R0) is loaded into program memory
; location 0104H (RR2),
; working registers R0, R2, R3 _ no change
LDE
@RR2,R0
; 11H (contents of R0) is loaded into external data memory
; location 0104H (RR2),
; working registers R0, R2, R3 _ no change
LDC
R0,#01H[RR4]
; R0 _ contents of program memory location 0061H
; (01H + RR4),
; R0 = AAH, R2 = 00H, R3 = 60H
LDE
R0,#01H[RR4]
; R0 _ contents of external data memory location 0061H
; (01H + RR4), R0 = BBH, R4 = 00H, R5 = 60H
LDC (note) #01H[RR4],R0
; 11H (contents of R0) is loaded into program memory location
; 0061H (01H + 0060H)
LDE
#01H[RR4],R0
; 11H (contents of R0) is loaded into external data memory
; location 0061H (01H + 0060H)
LDC
R0,#1000H[RR2]
; R0 _ contents of program memory location 1104H
; (1000H + 0104H), R0 = 88H, R2 = 01H, R3 = 04H
LDE
R0,#1000H[RR2]
; R0 _ contents of external data memory location 1104H
; (1000H + 0104H), R0 = 98H, R2 = 01H, R3 = 04H
LDC
R0,1104H
; R0 _ contents of program memory location 1104H, R0 = 88H
LDE
R0,1104H
; R0 _ contents of external data memory location 1104H,
; R0 = 98H
LDC (note) 1105H,R0
; 11H (contents of R0) is loaded into program memory location
; 1105H, (1105H) _ 11H
LDE
; 11H (contents of R0) is loaded into external data memory
; location 1105H, (1105H) _ 11H
NOTE:
6-30
1105H,R0
These instructions are not supported by masked ROM type devices.
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
LDCD/LDED — Load Memory and Decrement
LDCD/LDED
dst,src
Operation:
dst _ src
rr _ rr – 1
These instructions are used for user stacks or block transfers of data from program or data memory
to the register file. The address of the memory location is specified by a working register pair. The
contents of the source location are loaded into the destination location. The memory address is then
decremented. The contents of the source are unaffected.
LDCD references program memory and LDED references external data memory. The assembler
makes "Irr" an even number for program memory and an odd number for data memory.
Flags:
No flags are affected.
Format:
opc
Examples:
dst | src
Bytes
Cycles
Opcode
(Hex)
2
10
E2
Addr Mode
dst
src
r
Irr
Given: R6 = 10H, R7 = 33H, R8 = 12H, program memory location 1033H = 0CDH, and
external data memory location 1033H = 0DDH:
LDCD
R8,@RR6
; 0CDH (contents of program memory location 1033H) is loaded
; into R8 and RR6 is decremented by one
; R8 = 0CDH, R6 = 10H, R7 = 32H (RR6 _ RR6 – 1)
LDED
R8,@RR6
; 0DDH (contents of data memory location 1033H) is loaded
; into R8 and RR6 is decremented by one (RR6 _ RR6 – 1)
; R8 = 0DDH, R6 = 10H, R7 = 32H
6-31
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
LDCI/LDEI — LOAD MEMORY AND INCREMENT
LDCI/LDEI
dst,src
Operation:
dst _ src
rr _ rr + 1
These instructions are used for user stacks or block transfers of data from program or data memory
to the register file. The address of the memory location is specified by a working register pair. The
contents of the source location are loaded into the destination location. The memory address is then
incremented automatically. The contents of the source are unaffected.
LDCI refers to program memory and LDEI refers to external data memory. The assembler makes
"Irr" even for program memory and odd for data memory.
Flags:
No flags are affected.
Format:
opc
Examples:
6-32
dst | src
Bytes
Cycles
Opcode
(Hex)
2
10
E3
Addr Mode
dst
src
r
Irr
Given: R6 = 10H, R7 = 33H, R8 = 12H, program memory locations 1033H = 0CDH and
1034H = 0C5H; external data memory locations 1033H = 0DDH and 1034H = 0D5H:
LDCI
R8,@RR6
; 0CDH (contents of program memory location 1033H) is loaded
; into R8 and RR6 is incremented by one (RR6 _ RR6 + 1)
; R8 = 0CDH, R6 = 10H, R7 = 34H
LDEI
R8,@RR6
; 0DDH (contents of data memory location 1033H) is loaded
; into R8 and RR6 is incremented by one (RR6 _ RR6 + 1)
; R8 = 0DDH, R6 = 10H, R7 = 34H
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
NOP — No Operation
NOP
Operation:
No action is performed when the CPU executes this instruction. Typically, one or more NOPs are
executed in sequence in order to effect a timing delay of variable duration.
Flags:
No flags are affected.
Format:
opc
Example:
Bytes
Cycles
Opcode
(Hex)
1
4
FF
When the instruction
NOP
is encountered in a program, no operation occurs. Instead, there is a delay in instruction execution
time.
6-33
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
OR — Logical OR
OR
dst,src
Operation:
dst _ dst OR src
The source operand is logically ORed with the destination operand and the result is stored in the
destination. The contents of the source are unaffected. The OR operation results in a "1" being
stored whenever either of the corresponding bits in the two operands is a "1"; otherwise a "0" is
stored.
Flags:
C:
Z:
S:
V:
Unaffected.
Set if the result is "0"; cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Always cleared to "0".
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
42
r
r
6
43
r
lr
6
44
R
R
6
45
R
IR
6
46
R
IM
3
3
Addr Mode
dst
src
Given: R0 = 15H, R1 = 2AH, R2 = 01H, register 00H = 08H, register 01H = 37H, and
register 08H = 8AH:
OR
R0,R1
®
R0 = 3FH, R1 = 2AH
OR
R0,@R2
®
R0 = 37H, R2 = 01H, register 01H = 37H
OR
00H,01H
®
Register 00H = 3FH, register 01H = 37H
OR
01H,@00H
®
Register 00H = 08H, register 01H = 0BFH
OR
00H,#02H
®
Register 00H = 0AH
In the first example, if working register R0 contains the value 15H and register R1 the value 2AH, the
statement "OR R0,R1" logical-ORs the R0 and R1 register contents and stores the result (3FH) in
destination register R0.
The other examples show the use of the logical OR instruction with the various addressing modes
and formats.
6-34
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
POP — Pop From Stack
POP
dst
Operation:
dst _ @SP
SP _ SP + 1
The contents of the location addressed by the stack pointer are loaded into the destination. The
stack pointer is then incremented by one.
Flags:
No flags affected.
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
8
50
R
8
51
IR
Given: Register 00H = 01H, register 01H = 1BH, SP (0D9H) = 0BBH, and stack register 0BBH
= 55H:
POP
00H
®
Register 00H = 55H, SP = 0BCH
POP
@00H
®
Register 00H = 01H, register 01H = 55H, SP = 0BCH
In the first example, general register 00H contains the value 01H. The statement "POP 00H" loads
the contents of location 0BBH (55H) into destination register 00H and then increments the stack
pointer by one. Register 00H then contains the value 55H and the SP points to location 0BCH.
6-35
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
PUSH — Push To Stack
PUSH
src
Operation:
SP _ SP – 1
@SP _ src
A PUSH instruction decrements the stack pointer value and loads the contents of the source (src)
into the location addressed by the decremented stack pointer. The operation then adds the new
value to the top of the stack.
Flags:
No flags are affected.
Format:
opc
Examples:
src
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
8
70
R
8
71
IR
Given: Register 40H = 4FH, register 4FH = 0AAH, SP = 0C0H:
PUSH
40H
®
Register 40H = 4FH, stack register 0BFH = 4FH,
SP = 0BFH
PUSH
@40H
®
Register 40H = 4FH, register 4FH = 0AAH, stack register
0BFH = 0AAH, SP = 0BFH
In the first example, if the stack pointer contains the value 0C0H, and general register 40H the value
4FH, the statement "PUSH 40H" decrements the stack pointer from 0C0 to 0BFH. It then loads the
contents of register 40H into location 0BFH. Register 0BFH then contains the value 4FH and SP
points to location 0BFH.
6-36
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
RCF — Reset Carry Flag
RCF
RCF
Operation:
C _ 0
The carry flag is cleared to logic zero, regardless of its previous value.
Flags:
C: Cleared to "0".
No other flags are affected.
Format:
opc
Example:
Bytes
Cycles
Opcode
(Hex)
1
4
CF
Given: C = "1" or "0":
The instruction RCF clears the carry flag (C) to logic zero.
6-37
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
RET — Return
RET
Operation:
PC _ @SP
SP _ SP + 2
The RET instruction is normally used to return to the previously executing procedure at the end of a
procedure entered by a CALL instruction. The contents of the location addressed by the stack
pointer are popped into the program counter. The next statement that is executed is the one that is
addressed by the new program counter value.
Flags:
No flags are affected.
Format:
Bytes
Cycles
Opcode
(Hex)
1
8
AF
opc
10
Example:
Given: SP = 0BCH, (SP) = 101AH, and PC = 1234:
RET
®
PC = 101AH, SP = 0BEH
The statement "RET" pops the contents of stack pointer location 0BCH (10H) into the high byte of
the program counter. The stack pointer then pops the value in location 0BDH (1AH) into the PC's
low byte and the instruction at location 101AH is executed. The stack pointer now points to memory
location 0BEH.
6-38
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
RL — Rotate Left
RL
dst
Operation:
C _ dst (7)
dst (0) _ dst (7)
dst (n + 1) _ dst (n), n = 0–6
The contents of the destination operand are rotated left one bit position. The initial value of bit 7 is
moved to the bit zero (LSB) position and also replaces the carry flag.
7
0
C
Flags:
C:
Z:
S:
V:
Set if the bit rotated from the most significant bit position (bit 7) was "1".
Set if the result is "0"; cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Set if arithmetic overflow occurred, that is, if the sign of the destination changed during
rotation; cleared otherwise.
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
4
90
R
4
91
IR
Given: Register 00H = 0AAH, register 01H = 02H and register 02H = 17H:
RL
00H
®
Register 00H = 55H, C = "1"
RL
@01H
®
Register 01H = 02H, register 02H = 2EH, C = "0"
In the first example, if general register 00H contains the value 0AAH (10101010B), the statement
"RL 00H" rotates the 0AAH value left one bit position, leaving the new value 55H (01010101B) and
setting the carry and overflow flags.
6-39
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
RLC — Rotate Left Through Carry
RLC
dst
Operation:
dst (0) _ C
C _ dst (7)
dst (n + 1) _ dst (n), n = 0–6
The contents of the destination operand with the carry flag are rotated left one bit position. The initial
value of bit 7 replaces the carry flag (C); the initial value of the carry flag replaces bit zero.
7
0
C
Flags:
C: Set if the bit rotated from the most significant bit position (bit 7) was "1".
Z: Set if the result is "0"; cleared otherwise.
S: Set if the result bit 7 is set; cleared otherwise.
V: Set if arithmetic overflow occurred, that is, if the sign of the destination changed during
rotation; cleared otherwise.
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
4
10
R
4
11
IR
Given: Register 00H = 0AAH, register 01H = 02H, and register 02H = 17H, C = "0":
RLC
00H
®
Register 00H = 54H, C = "1"
RLC
@01H
®
Register 01H = 02H, register 02H = 2EH, C = "0"
In the first example, if general register 00H has the value 0AAH (10101010B), the statement "RLC
00H" rotates 0AAH one bit position to the left. The initial value of bit 7 sets the carry flag and the
initial value of the C flag replaces bit zero of register 00H, leaving the value 55H (01010101B). The
MSB of register 00H resets the carry flag to "1" and sets the overflow flag.
6-40
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
RR — Rotate Right
RR
dst
Operation:
C _ dst (0)
dst (7) _ dst (0)
dst (n) _ dst (n + 1), n = 0–6
The contents of the destination operand are rotated right one bit position. The initial value of bit zero
(LSB) is moved to bit 7 (MSB) and also replaces the carry flag (C).
7
0
C
Flags:
C:
Z:
S:
V:
Set if the bit rotated from the least significant bit position (bit zero) was "1".
Set if the result is "0"; cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Set if arithmetic overflow occurred, that is, if the sign of the destination changed during
rotation; cleared otherwise.
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
4
E0
R
4
E1
IR
Given: Register 00H = 31H, register 01H = 02H, and register 02H = 17H:
RR
00H
®
Register 00H = 98H, C = "1"
RR
@01H
®
Register 01H = 02H, register 02H = 8BH, C = "1"
In the first example, if general register 00H contains the value 31H (00110001B), the statement "RR
00H" rotates this value one bit position to the right. The initial value of bit zero is moved to bit 7,
leaving the new value 98H (10011000B) in the destination register. The initial bit zero also resets the
C flag to "1" and the sign flag and overflow flag are also set to "1".
6-41
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
RRC — Rotate Right Through Carry
RRC
dst
Operation:
dst (7) _ C
C _ dst (0)
dst (n) _ dst (n + 1), n = 0–6
The contents of the destination operand and the carry flag are rotated right one bit position. The
initial value of bit zero (LSB) replaces the carry flag; the initial value of the carry flag replaces bit 7
(MSB).
7
0
C
Flags:
C:
Z:
S:
V:
Set if the bit rotated from the least significant bit position (bit zero) was "1".
Set if the result is "0" cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Set if arithmetic overflow occurred, that is, if the sign of the destination changed during
rotation; cleared otherwise.
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
4
C0
R
4
C1
IR
Given: Register 00H = 55H, register 01H = 02H, register 02H = 17H, and C = "0":
RRC
00H
®
Register 00H = 2AH, C = "1"
RRC
@01H
®
Register 01H = 02H, register 02H = 0BH, C = "1"
In the first example, if general register 00H contains the value 55H (01010101B), the statement
"RRC 00H" rotates this value one bit position to the right. The initial value of bit zero ("1") replaces
the carry flag and the initial value of the C flag ("1") replaces bit 7. This leaves the new value 2AH
(00101010B) in destination register 00H. The sign flag and overflow flag are both cleared to "0".
6-42
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
SBC — Subtract With Carry
SBC
dst,src
Operation:
dst _ dst – src – c
The source operand, along with the current value of the carry flag, is subtracted from the destination
operand and the result is stored in the destination. The contents of the source are unaffected.
Subtraction is performed by adding the two's-complement of the source operand to the destination
operand. In multiple precision arithmetic, this instruction permits the carry ("borrow") from the
subtraction of the low-order operands to be subtracted from the subtraction of high-order operands.
Flags:
C:
Z:
S:
V:
Set if a borrow occurred (src > dst); cleared otherwise.
Set if the result is "0"; cleared otherwise.
Set if the result is negative; cleared otherwise.
Set if arithmetic overflow occurred, that is, if the operands were of opposite sign and the sign
of the result is the same as the sign of the source; cleared otherwise.
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
32
r
r
6
33
r
lr
6
34
R
R
6
35
R
IR
6
36
R
IM
3
3
Addr Mode
dst
src
Given: R1 = 10H, R2 = 03H, C = "1", register 01H = 20H, register 02H = 03H, and register
03H = 0AH:
SBC
R1,R2
®
R1 = 0CH, R2 = 03H
SBC
R1,@R2
®
R1 = 05H, R2 = 03H, register 03H = 0AH
SBC
01H,02H
®
Register 01H = 1CH, register 02H = 03H
SBC
01H,@02H
®
Register 01H = 15H,register 02H = 03H, register 03H = 0AH
SBC
01H,#8AH
®
Register 01H = 95H; C, S, and V = "1"
In the first example, if working register R1 contains the value 10H and register R2 the value 03H, the
statement "SBC R1,R2" subtracts the source value (03H) and the C flag value ("1") from the
destination (10H) and then stores the result (0CH) in register R1.
6-43
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
SCF — Set Carry Flag
SCF
Operation:
C _ 1
The carry flag (C) is set to logic one, regardless of its previous value.
Flags:
C: Set to "1".
No other flags are affected.
Format:
opc
Example:
The statement
SCF
sets the carry flag to logic one.
6-44
Bytes
Cycles
Opcode
(Hex)
1
4
DF
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
SRA — Shift Right Arithmetic
SRA
dst
Operation:
dst (7) _ dst (7)
C _ dst (0)
dst (n) _ dst (n + 1), n = 0–6
An arithmetic shift-right of one bit position is performed on the destination operand. Bit zero (the
LSB) replaces the carry flag. The value of bit 7 (the sign bit) is unchanged and is shifted into bit
position 6.
7 6
0
C
Flags:
C:
Z:
S:
V:
Set if the bit shifted from the LSB position (bit zero) was "1".
Set if the result is "0"; cleared otherwise.
Set if the result is negative; cleared otherwise.
Always cleared to "0".
Format:
opc
Examples:
dst
Bytes
Cycles
Opcode
(Hex)
Addr Mode
dst
2
4
D0
R
4
D1
IR
Given: Register 00H = 9AH, register 02H = 03H, register 03H = 0BCH, and C = "1":
SRA
00H
®
Register 00H = 0CD, C = "0"
SRA
@02H
®
Register 02H = 03H, register 03H = 0DEH, C = "0"
In the first example, if general register 00H contains the value 9AH (10011010B), the statement
"SRA 00H" shifts the bit values in register 00H right one bit position. Bit zero ("0") clears the C flag
and bit 7 ("1") is then shifted into the bit 6 position (bit 7 remains unchanged). This leaves the value
0CDH (11001101B) in destination register 00H.
6-45
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
STOP — Stop Operation
STOP
Operation:
The STOP instruction stops the both the CPU clock and system clock and causes the
microcontroller to enter Stop mode. During Stop mode, the contents of on-chip CPU registers,
peripheral registers, and I/O port control and data registers are retained. Stop mode can be released
by an external reset operation or External interrupt input. For the reset operation, the RESET pin
must be held to Low level until the required oscillation stabilization interval has elapsed.
Flags:
No flags are affected.
Format:
opc
Example:
Bytes
Cycles
Opcode
(Hex)
1
4
7F
Addr Mode
dst
src
–
–
The statement
LD
STOPCON, #0A5H
STOP
NOP
NOP
NOP
halts all microcontroller operations. When STOPCON register is not #0A5H value, if you use STOP
instruction, PC is changed to reset address.
6-46
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
SUB — Subtract
SUB
dst,src
Operation:
dst _ dst – src
The source operand is subtracted from the destination operand and the result is stored in the
destination. The contents of the source are unaffected. Subtraction is performed by adding the two's
complement of the source operand to the destination operand.
Flags:
C:
Z:
S:
V:
Set if a "borrow" occurred; cleared otherwise.
Set if the result is "0"; cleared otherwise.
Set if the result is negative; cleared otherwise.
Set if arithmetic overflow occurred, that is, if the operands were of opposite signs and the sign
of the result is of the same as the sign of the source operand; cleared otherwise.
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
22
r
r
6
23
r
lr
6
24
R
R
6
25
R
IR
6
26
R
IM
3
3
Addr Mode
dst
src
Given: R1 = 12H, R2 = 03H, register 01H = 21H, register 02H = 03H, register 03H = 0AH:
SUB
R1,R2
®
R1 = 0FH, R2 = 03H
SUB
R1,@R2
®
R1 = 08H, R2 = 03H
SUB
01H,02H
®
Register 01H = 1EH, register 02H = 03H
SUB
01H,@02H
®
Register 01H = 17H, register 02H = 03H
SUB
01H,#90H
®
Register 01H = 91H; C, S, and V = "1"
SUB
01H,#65H
®
Register 01H = 0BCH; C and S = "1", V = "0"
In the first example, if working register R1 contains the value 12H and if register R2 contains the
value 03H, the statement "SUB R1,R2" subtracts the source value (03H) from the destination value
(12H) and stores the result (0FH) in destination register R1.
6-47
SAM88RCRI INSTRUCTION SET
TCM
S3C9484/C9488/F9488
— Test Complement Under Mask
TCM
dst,src
Operation:
(NOT dst) AND src
This instruction tests selected bits in the destination operand for a logic one value. The bits to be
tested are specified by setting a "1" bit in the corresponding position of the source operand (mask).
The TCM statement complements the destination operand, which is then ANDed with the source
mask. The zero (Z) flag can then be checked to determine the result. The destination and source
operands are unaffected.
Flags:
C:
Z:
S:
V:
Unaffected.
Set if the result is "0"; cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Always cleared to "0".
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
62
r
r
6
63
r
lr
6
64
R
R
6
65
R
IR
6
66
R
IM
3
3
Addr Mode
dst
src
Given: R0 = 0C7H, R1 = 02H, R2 = 12H, register 00H = 2BH, register 01H = 02H, and
register 02H = 23H:
TCM
R0,R1
®
R0 = 0C7H, R1 = 02H, Z = "1"
TCM
R0,@R1
®
R0 = 0C7H, R1 = 02H, register 02H = 23H, Z = "0"
TCM
00H,01H
®
Register 00H = 2BH, register 01H = 02H, Z = "1"
TCM
00H,@01H
®
Register 00H = 2BH, register 01H = 02H,
register 02H = 23H, Z = "1"
TCM
00H,#34
®
Register 00H = 2BH, Z = "0"
In the first example, if working register R0 contains the value 0C7H (11000111B) and register R1 the
value 02H (00000010B), the statement "TCM R0,R1" tests bit one in the destination register for a
"1" value. Because the mask value corresponds to the test bit, the Z flag is set to logic one and can
be tested to determine the result of the TCM operation.
6-48
S3C9484/C9488/F9488
SAM88RCRI INSTRUCTION SET
TM — Test Under Mask
TM
dst,src
Operation:
dst AND src
This instruction tests selected bits in the destination operand for a logic zero value. The bits to be
tested are specified by setting a "1" bit in the corresponding position of the source operand (mask),
which is ANDed with the destination operand. The zero (Z) flag can then be checked to determine
the result. The destination and source operands are unaffected.
Flags:
C:
Z:
S:
V:
Unaffected.
Set if the result is "0"; cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Always reset to "0".
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
72
r
r
6
73
r
lr
6
74
R
R
6
75
R
IR
6
76
R
IM
3
3
Addr Mode
dst
src
Given: R0 = 0C7H, R1 = 02H, R2 = 18H, register 00H = 2BH, register 01H = 02H, and
register 02H = 23H:
TM
R0,R1
®
R0 = 0C7H, R1 = 02H, Z = "0"
TM
R0,@R1
®
R0 = 0C7H, R1 = 02H, register 02H = 23H, Z = "0"
TM
00H,01H
®
Register 00H = 2BH, register 01H = 02H, Z = "0"
TM
00H,@01H
®
Register 00H = 2BH, register 01H = 02H,
register 02H = 23H, Z = "0"
TM
00H,#54H
®
Register 00H = 2BH, Z = "1"
In the first example, if working register R0 contains the value 0C7H (11000111B) and register R1 the
value 02H (00000010B), the statement "TM R0,R1" tests bit one in the destination register for a "0"
value. Because the mask value does not match the test bit, the Z flag is cleared to logic zero and
can be tested to determine the result of the TM operation.
6-49
SAM88RCRI INSTRUCTION SET
S3C9484/C9488/F9488
XOR — Logical Exclusive OR
XOR
dst,src
Operation:
dst _ dst XOR src
The source operand is logically exclusive-ORed with the destination operand and the result is stored
in the destination. The exclusive-OR operation results in a "1" bit being stored whenever the
corresponding bits in the operands are different; otherwise, a "0" bit is stored.
Flags:
C:
Z:
S:
V:
Unaffected.
Set if the result is "0"; cleared otherwise.
Set if the result bit 7 is set; cleared otherwise.
Always reset to "0".
Format:
opc
opc
opc
Examples:
dst | src
src
dst
dst
src
Bytes
Cycles
Opcode
(Hex)
2
4
B2
r
r
6
B3
r
lr
6
B4
R
R
6
B5
R
IR
6
B6
R
IM
3
3
Addr Mode
dst
src
Given: R0 = 0C7H, R1 = 02H, R2 = 18H, register 00H = 2BH, register 01H = 02H, and
register 02H = 23H:
XOR
R0,R1
®
R0 = 0C5H, R1 = 02H
XOR
R0,@R1
®
R0 = 0E4H, R1 = 02H, register 02H = 23H
XOR
00H,01H
®
Register 00H = 29H, register 01H = 02H
XOR
00H,@01H
®
Register 00H = 08H, register 01H = 02H, register 02H = 23H
XOR
00H,#54H
®
Register 00H = 7FH
In the first example, if working register R0 contains the value 0C7H and if register R1 contains the
value 02H, the statement "XOR R0,R1" logically exclusive-ORs the R1 value with the R0 value and
stores the result (0C5H) in the destination register R0.
6-50
S3C9484/C9488/F9488
7
CLOCK CIRCUIT
CLOCK CIRCUIT
OVERVIEW
The clock frequency generation for the S3C9484/C9488/F9488 by an external crystal can range from 1 MHz to 8
MHz. The maximum CPU clock frequency is 8 MHz. The XIN and XOUT pins connect the external oscillator or clock
source to the on-chip clock circuit.
SYSTEM CLOCK CIRCUIT
The system clock circuit has the following components:
— External crystal or ceramic resonator oscillation source (or an external clock source)
— Oscillator stop and wake-up functions
— Programmable frequency divider for the CPU clock (fxx divided by 1, 2, 8, or 16)
— System clock control register, CLKCON
— Oscillator control register, OSCCON and STOP control register, STPCON
C1
XIN
XIN
S3C9484/
C9488/F9488
S3C9484/
C9488/F9488
C2
XOUT
Figure 7-1. Main Oscillator Circuit
(Crystal or Ceramic Oscillator)
XOUT
Figure 7-2. Main Oscillator Circuit
(RC Oscillator)
7-1
CLOCK CIRCUIT
S3C9484/C9488/F9488
CLOCK STATUS DURING POWER-DOWN MODES
The two power-down modes, Stop mode and Idle mode, affect the system clock as follows:
— In Stop mode, the main oscillator is halted. Stop mode is released, and the oscillator started, by a reset
operation or an external interrupt (with RC delay noise filter), and can be released by internal interrupt too when
the sub-system oscillator is running and watch timer is operating with sub-system clock.
— In Idle mode, the internal clock signal is gated to the CPU, but not to interrupt structure, timers and timer/
counters. Idle mode is released by a reset or by an external or internal interrupt.
Stop Release
INT
Main-System
Oscillator
Circuit
Sub-system
Oscillator
Circuit
fxt
fx
Watch Timer
Selector 1
Stop
fXX
Stop
OSCCON.3
OSCCON.0
OSCCON.2
STOP
OSC inst.
Timer/Counter
Frequency
Dividing
Circuit
STPCON
1/1
CLKCON.4-.3
Basic Timer
1/8-1/4096
1/2
1/8
Watch Timer (fxx/128)
LCD Controller
A/D Converter
1/16
Selector 2
CPU
Idle
Figure 7-3. System Clock Circuit Diagram
7-2
S3C9484/C9488/F9488
CLOCK CIRCUIT
SYSTEM CLOCK CONTROL REGISTER (CLKCON)
The system clock control register, CLKCON, is located at address D4H. It is read/write addressable and has the
following functions:
— Oscillator frequency divide-by value
After the main oscillator is activated, and the fxx/16 (the slowest clock speed) is selected as the CPU clock. If
necessary, you can then increase the CPU clock speed to fxx/8, fxx/2, or fxx/1.
System Clock Control Register (CLKCON)
D4H, R/W
MSB
.7
.6
.5
.4
Not used
Oscillator IRQ Wake-up
Function Enable Bit:
0 = Enable IRQ for main system
oscillator wake-up function
1 = Disable IRQ for main system
oscillator wake-up function
.3
.2
.1
.0
LSB
Not used
Divide-by selection bits for
CPU clock frequency:
00 = fxx/16
01 = fxx/8
10 = fxx/2
11 = fxx/1 (non-divided)
Figure 7-4. System Clock Control Register (CLKCON)
MAIN/SUBSYSTEM OSCILLATOR SELECTION (OSCCON)
When a main oscillator is selected, users cannot stop operating of a main oscillator by handling the OSCCON
register but sub oscillator can be stopped. If users intend to stop operating of a main oscillator users must use
"STOP" instruction.
When a sub oscillator is selected, users must do the contrary of the above case.
NOTE:
If a sub oscillator is not used, users must connect it to Vss.
7-3
CLOCK CIRCUIT
S3C9484/C9488/F9488
Oscillator Control Register (OSCCON)
D6H, R/W
MSB
.7
.6
.5
.4
.3
.2
.1
Not used
.0
LSB
System clock selection bit:
0 = Mainsystem oscillator select
1 = Subsystem oscillator select
Not used
Subsystem oscillator control bit:
0 = Subsystem oscillator RUN
1 = Subsystem oscillator STOP
Mainsystem oscillator control bit:
0 = Mainsystem oscillator RUN
1 = Mainsystem oscillator STOP
NOTE:
When the CPU is operated with fxt (sub-oscillation clock), it is possible to use the stop
instruction but in this case before using stop instruction,you must select fxx /128 for basic
timer counter input clock . Then the oscillation stabilization time is 62.5 ((1/32768) x 128 x 16) ms.
Here the warm-up time is from the stop release signal activates until the basic timer counter
counting start. So the totaly needed oscillation stabilization time will be less than 162.5 ms.
Figure 7-5. Oscillator Control Register (OSCCON)
STOP Control Register (STPCON)
D7H, R/W
MSB
.7
.6
.5
.4
.3
.2
.1
.0
STOP Control bits:
Other values = Disable STOP instruction
10100101 = Enable STOP instruction
Figure 7-6. STOP Control Register (STPCON)
7-4
LSB
RESET and POWER-DOWN
S3C9484/C9488/F9488
8
RESET and POWER-DOWN
SYSTEM RESET
OVERVIEW
During a power-on reset, the voltage at VDD goes to High level and the RESET pin is forced to Low level. The RESET
signal is input through a Schmitt trigger circuit where it is then synchronized with the CPU clock. This procedure
brings S3C9484/C9488/F9488 into a known operating status.
To allow time for internal CPU clock oscillation to stabilize, the RESET pin must be held to Low level for a minimum
time interval after the power supply comes within tolerance. The minimum required oscillation stabilization time for a
reset operation is 1millisecond.
Whenever a reset occurs during normal operation (that is, when both VDD and RESET are High level), the RESET
pin is forced Low and the reset operation starts. All system and peripheral control registers are then reset to their
default hardware values.
In summary, the following sequence of events occurs during a reset operation:
— Interrupt is disabled.
— The watchdog function is enabled.
— Ports 0-4 are set to input mode. (except P0.0-2, P3.3-6)
— Peripheral control and data registers are disabled and reset to their default hardware values.
— The program counter (PC) is loaded with the program reset address in the ROM, 0100H.
— When the programmed oscillation stabilization time interval has elapsed, the instruction stored in ROM location
0100H (and 0101H) is fetched and executed.
NORMAL MODE RESET OPERATION
In normal (masked ROM) mode, the Test pin is tied to VSS. A reset enables access to the 4/8-Kbyte on-chip ROM.
(The external interface is not automatically configured).
NOTE
To program the duration of the oscillation stabilization interval, you make the appropriate settings to the
basic timer control register, BTCON, before entering Stop mode. Also, if you do not want to use the
watchdog timer function (which causes a system reset if a watchdog timer counter overflow occurs), you
can disable it by writing '1010B' to the upper nibble of WDTCON.
8-1
RESET and POWER-DOWN
S3C9484/C9488/F9488
HARDWARE RESET VALUES
The reset values for CPU and system registers, peripheral control registers, and peripheral data registers following a
reset operation. The following notation is used to represent reset values:
— A "1" or a "0" shows the reset bit value as logic one or logic zero, respectively.
— An "x" means that the bit value is undefined after a reset.
— A dash ("–") means that the bit is either not used or not mapped, but read 0 is the bit value.
Table 8-1. S3C9484/C9488/F9488 Register Values after RESET
Register Name
Mnemonic
Bit Values After RESET
Address
Dec
Hex
7
6
5
4
3
2
1
0
LCD control register
LCDCON
208
D0H
0
–
0
0
0
0
0
0
LCD drive voltage control register
LCDVOL
209
D1H
0
–
–
–
0
0
0
0
Port 0 pull-up resistor control register
P0PUR
210
D2H
1
1
1
1
1
1
1
1
Port 1 pull-up resistor control register
P1PUR
211
D3H
1
1
1
1
1
1
1
1
CLKCON
212
D4H
0
–
–
0
0
–
–
–
FLAGS
213
D5H
x
x
x
x
–
–
–
–
Oscillator control register
OSCCON
214
D6H
–
–
–
–
0
0
–
0
STOP control register
STPCON
215
D7H
0
0
0
0
0
0
0
0
Voltage Level Detector control register
VLDCON
216
D8H
–
0
1
0
1
1
0
0
SP
217
D9H
x
x
x
x
x
x
x
x
System Clock control register
System flags register
Stack pointer register
Location DAH-DBH are not mapped
Basic timer control register
BTCON
220
DCH
–
–
–
–
0
0
0
0
Basic timer counter register
BTCNT
221
DDH
0
0
0
0
0
0
0
0
Location DEH is not mapped
System mode register
SYM
223
DFH
–
–
–
–
0
0
0
0
Port 0 Data Register
P0
224
E0H
0
0
0
0
0
0
0
0
Port 1 Data Register
P1
225
E1H
0
0
0
0
0
0
0
0
Port 2 Data Register
P2
226
E2H
0
0
0
0
0
0
0
0
Port 3 Data Register
P3
227
E3H
0
0
0
0
0
0
0
0
Port 4 Data Register
P4
228
E4H
0
0
0
0
0
0
0
0
Watchdog timer control register
WDTCON
229
E5H
0
0
0
0
0
0
0
0
Port 0 control High register
P0CONH
230
E6H
0
0
0
0
0
0
0
0
Port 0 control Low register
P0CONL
231
E7H
0
0
0
0
0
0
0
0
Port 1 control High register
P1CONH
232
E8H
0
0
0
0
0
0
0
0
Port 1 control Low register
P1CONL
233
E9H
0
0
0
0
0
0
0
0
8-2
RESET and POWER-DOWN
S3C9484/C9488/F9488
Table 8-1. S3C9484/C9488/F9488 Registers Values after RESET (continued)
Register Name
Mnemonic
Bit Values After RESET
Address
Dec
Hex
7
6
5
4
3
2
1
0
Port 2 control High register
P2CONH
234
EAH
0
0
0
0
0
0
0
0
Port 2 control Low register
P2CONL
235
EBH
0
0
0
0
0
0
0
0
Port 3 control High register
P3CONH
236
ECH
S
S
S
S
S
S
S
S
Port 3 control Low register
P3CONL
237
EDH
0
0
0
0
0
0
0
0
Port 3 interrupt control register
P3INT
238
EEH
0
0
0
0
0
0
0
0
Port 3 interrupt pending register
P3PND
239
EFH
–
–
–
–
0
0
0
0
Port 4 control High register
P4CONH
240
F0H
–
–
0
0
0
0
0
0
Port 4 control Low register
P4CONL
241
F1H
0
0
0
0
0
0
0
0
Timer A/B interrupt pending register
TINTPND
242
F2H
–
–
–
–
–
0
0
0
Timer A control register
TACON
243
F3H
0
0
0
0
0
0
0
0
Timer A counter register
TACNT
244
F4H
0
0
0
0
0
0
0
0
TADATA
245
F5H
1
1
1
1
1
1
1
1
Timer B data register(high byte)
TBDATAH
246
F6H
1
1
1
1
1
1
1
1
Timer B data register(low byte)
TBDATAL
247
F7H
1
1
1
1
1
1
1
1
Timer B control register
TBCON
248
F8H
0
0
0
0
0
0
0
0
Watch timer control register
WTCON
249
F9H
0
0
0
0
0
0
0
0
A/D converter data register(high byte)
ADDATAH
250
FAH
–
–
–
–
–
–
0
0
A/D converter data register(low byte)
ADDATAL
251
FBH
0
0
0
0
0
0
0
0
ADCON
252
FCH
0
0
0
0
0
0
0
0
UART control register
UARTCON
253
FDH
0
0
0
0
0
0
0
0
UART pending register
UARTPND
254
FEH
–
–
0
0
–
–
0
0
UDATA
255
FFH
x
x
x
x
x
x
x
x
Timer A data register
A/D converter control register
UART data register
Table 8-2. S3C9484/C9488/F9488 Registers Values after RESET (page 1)
Register Name
Mnemonic
Bit Values After RESET
Address
Dec Hex
7
6
5
4
3
2
1
0
UART baud rate data register(high byte)
BRDATAH
20
14H
1
1
1
1
1
1
1
1
UART baud rate data register(low byte)
BRDATAL
21
15H
1
1
1
1
1
1
1
1
NOTE:
–: Not mapped or not used, x: Undefined, S: be set by Smart option.
8-3
RESET and POWER-DOWN
S3C9484/C9488/F9488
POWER-DOWN MODES
STOP MODE
Stop mode is invoked by the instruction STOP (opcode 7FH). In Stop mode, the operation of the CPU and all
peripherals is halted. That is, the on-chip main oscillator stops and the supply current is reduced to less than 3 µA.
All system functions stop when the clock "freezes," but data stored in the internal register file is retained. Stop
mode can be released in one of two ways: by a reset or by interrupts.
NOTE
Do not use stop mode if you are using an external clock source because XIN input must be restricted
internally to VSS to reduce current leakage.
Using RESET to Release Stop Mode
Stop mode is released when the RESET signal is released and returns to high level: all system and peripheral
control registers are reset to their default hardware values and the contents of all data registers are retained. A reset
operation automatically selects a slow clock (1/16) because CLKCON.3 and CLKCON.4 are cleared to '00B'. After
the programmed oscillation stabilization interval has elapsed, the CPU starts the system initialization routine by
fetching the program instruction stored in ROM location 0100H (and 0101H).
Using an External Interrupt to Release Stop Mode
External interrupts with an RC-delay noise filter circuit can be used to release Stop mode. Which interrupt you can
use to release Stop mode in a given situation depends on the microcontroller's current internal operating mode. The
external interrupts in the S3C9484/C9488/F9488 interrupt structure that can be used to release Stop mode are:
— External interrupts P3.3-P3.6 (INT0-INT3)
Please note the following conditions for Stop mode release:
— If you release Stop mode using an external interrupt, the current values in system and peripheral control
registers are unchanged except STPCON register.
— If you use an external interrupt for Stop mode release, you can also program the duration of the oscillation
stabilization interval. To do this, you must make the appropriate control and clock settings before entering Stop
mode.
— When the Stop mode is released by external interrupt, the CLKCON.4 and CLKCON.3 bit-pair setting remains
unchanged and the currently selected clock value is used.
— The external interrupt is serviced when the Stop mode release occurs. Following the IRET from the service
routine, the instruction immediately following the one that initiated Stop mode is executed.
Using an internal Interrupt to Release Stop Mode
If you use Watch Timer with sub oscillator, STOP mode is released by WATCH TIMER interrupt.
How to enter into stop mode
Handling STPCON register then writing STOP instruction. (Keep the order)
8-4
S3C9484/C9488/F9488
RESET and POWER-DOWN
Attentions of Using Stop Mode
If you use 42-pin Package, you must set P0.3- P0.4 for output mode and must set out value on low.
And If you use 32-pin Package, you must set P4.0- P4.6/P0.3- P0.7 for output mode and must set out value to low
to prevent the leaky current in stop mode.
IDLE MODE
Idle mode is invoked by the instruction IDLE (opcode 6FH). In idle mode, CPU operations are halted while some
peripherals remain active. During idle mode, the internal clock signal is gated away from the CPU, but all peripherals
timers remain active. Port pins retain the mode (input or output) they had at the time idle mode was entered.
There are two ways to release idle mode:
1.
Execute a reset. All system and peripheral control registers are reset to their default values and the contents of
all data registers are retained. The reset automatically selects the slow clock fxx/16 because CLKCON.4 and
CLKCON.3 are cleared to ‘00B’. If interrupts are masked, a reset is the only way to release idle mode.
2.
Activate any enabled interrupt, causing idle mode to be released. When you use an interrupt to release idle
mode, the CLKCON.4 and CLKCON.3 register values remain unchanged, and the currently selected clock value
is used. The interrupt is then serviced. When the return-from-interrupt (IRET) occurs, the instruction immediately
following the one that initiated idle mode is executed.
8-5
RESET and POWER-DOWN
S3C9484/C9488/F9488
NOTES
8-6
S3C9484/C9488/F9488
9
I/O PORTS
I/O PORTS
OVERVIEW
The S3C9484/C9488/F9488 microcontroller has five bit-programmable I/O ports, P0-P4. The port 3 and 4 are 7-bit
ports and the others are 8-bit ports. This gives a total of 38 I/O pins. Each port can be flexibly configured to meet
application design requirements. The CPU accesses ports by directly writing or reading port registers. No special I/O
instructions are required.
Table 9-1 gives you a general overview of the S3C9484/C9488/F9488 I/O port functions.
Table 9-1. S3C9484/C9488/F9488 Port Configuration Overview
Port
Configuration Options
0
I/O port with bit-programmable pins. Configurable to input or push-pull output mode. Pull-up resistors
can be assigned by software. Pins can also be assigned individually as alternative function pins.
1
I/O port with bit-programmable pins. Configurable to input or push-pull output mode. Pull-up resistors
can be assigned by software. Pins can also be assigned individually as alternative function pins.
2
I/O port with bit-programmable pins. Configurable to input mode, push-pull output mode. Pins can also
be assigned individually as alternative function pins.
3
I/O port with bit-programmable pins. Configurable to input mode, push-pull output mode. Pins can also
be assigned individually as alternative function pins.
4
I/O port with bit-programmable pins. Configurable to input mode, push-pull output mode. Pins can also
be assigned individually as alternative function pins.
9-1
I/O PORTS
S3C9484/C9488/F9488
PORT DATA REGISTERS
Table 9-2 gives you an overview of the register locations of all five S3C9484/C9488/F9488 I/O port data registers.
Data registers for ports 0, 1, 2, 3, and 4 have the general format shown in Figure 9-1.
Table 9-2. Port Data Register Summary
Register Name
9-2
Mnemonic
Decimal
Hex
R/W
Port 0 data register
P0
224
E0H
R/W
Port 1 data register
P1
225
E1H
R/W
Port 2 data register
P2
226
E2H
R/W
Port 3 data register
P3
227
E3H
R/W
Port 4 data register
P4
228
E4H
R/W
S3C9484/C9488/F9488
I/O PORTS
PORT 0
Port 0 is an 8-bit I/O Port that you can use two ways:
— General-purpose I/O
— Alternative function
Port 0 is accessed directly by writing or reading the port 0 data register, P0 at location E0H.
Port 0 Control Register (P0CONH, P0CONL, P0PUR)
Port 0 pins are configured individually by bit-pair settings in three control registers located :
P0CONL (low byte, E7H) , P0CONH (high byte, E6H) and P0PUR (D2H).
When you select output mode, a push-pull circuit is configured. In input mode, many different selections are
available:
— Input mode.
— Push-pull output mode
— Alternative function: LCD ‘COM’ signal output – COM4, COM5, COM6, COM7
— Alternative function: ADC input mode – ADC4, ADC5, ADC6, ADC7, ADC8
— Alternative function: RESETB
— Alternative function: Xtin/Xtout
9-3
I/O PORTS
S3C9484/C9488/F9488
Port 0 Control Register, High Byte (P0CONH)
E6H, R/W, Reset value:00H
MSB
.7
.6
P0.7
COM4/
ADC4
.5
.4
P0.6
COM5/
ADC5
.3
.2
P0.5
COM6/
ADC6
.1
.0
LSB
P0.4
/COM7
/ADC7
.7 .6
00
01
10
11
Input mode
Alternative function: ADC4 Input
Push-pull output
Alternative function: LCD COM4 signal output
.5 .4
00
01
10
11
Input mode
Alternative function: ADC5 Input
Push-pull output
Alternative function: LCD COM5 signal output
.3 .2
00
01
10
11
Input mode
Alternative function: ADC6 Input
Push-pull output
Alternative function: LCD COM6 signal output
.1 .0
00
01
10
11
NOTE:
Input mode
Alternative function: ADC7 Input
Push-pull output
Alternative function: LCD COM7 signal output
You must be care of the pull-up resistor option.
Figure 9-1. Port 0 High-Byte Control Register (P0CONH)
9-4
S3C9484/C9488/F9488
I/O PORTS
Port 0 Control Register, Low Byte (P0CONL)
E7H, R/W, Reset value:00H
MSB
.7
.6
P0.3
/ADC8
.5
.4
P0.2
.3
.2
P0.1
.1
.0
LSB
P0.0
.7 .6
0x
10
11
Input mode
Push-pull output
Alternative function: ADC8 input
.5 .4
0x
1x
Input mode
Push-pull output
.3 .2
0x
1x
Input mode
Push-pull output
.1 .0
0x
1x
Input mode
Push-pull output
NOTES:
1. You must determine P0.0-P0.2 function on smart option.
In other word, After reset operation, you cann't change P0.0-.2 function.
If you selected Normal I/O function at smart option,
After reset operation, you can use on Normal I/O and you can control P0.0-.2
by this control register value.
2. You must be care of the pull-up resistor option.
Figure 9-2. Port 0 Low-Byte Control Register (P0CONL)
9-5
I/O PORTS
S3C9484/C9488/F9488
Port 0 Pull-up Resistor Control Register (P0PUR)
D2H, R/W, Reset value:FFH
MSB
.7
P1.7
.6
P0.6
.5
P1.5
.4
P1.4
.3
P1.3
.2
P1.2
.1
P0.1
.0
LSB
P1.0
P0PUR Pin Configuration Settings:
0
1
Pull-up resistor disable
Pull-up resistor enable
Figure 9-3. Port 0 Pull-up Resistor Control Register (P0PUR)
PORT 1
Port 1 is an 8-bit I/O port that you can use two ways:
— General-purpose I/O
— Alternative function
Port 1 is accessed directly by writing or reading the port 1 data register, P1 at location E1H.
Port 1 Control Register (P1CONH, P1CONL, P1PUR)
Port 1 pins are configured individually by bit-pair settings in three control registers located:
P1CONL(low byte, E9H), P1CONH(high byte, E8H) and P1PUR(D3H).
When you select output mode, a push-pull circuit is configured. In input mode, many different selections are
available:
— Input mode.
— Push-pull output mode
— Alternative function: LCD ‘COM’ signal output – COM0, COM1, COM2, COM3
— Alternative function: TBPWM output
— Alternative function: BUZ output
— Alternative function: ADC input mode – ADC0, ADC1, ADC2, ADC3
9-6
S3C9484/C9488/F9488
I/O PORTS
Port 1 Control Register, High Byte (P1CONH)
E8H, R/W, Reset value:00H
MSB
.7
.6
P1.7
/COM0
.5
.4
P1.6
/COM1
.3
.2
P1.5
/COM2
.1
.0
LSB
P1.4
/COM3
.7 .6
0x
10
11
Input mode
Push-pull output
Alternative function: LCD COM0 signal output
.5 .4
0x
10
11
Input mode
Push-pull output
Alternative function: LCD COM1 signal output
.3 .2
0x
10
11
Input mode
Push-pull output
Alternative function: LCD COM2 signal output
.1 .0
0x
10
11
NOTE:
Input mode
Push-pull output
Alternative function: LCD COM3signal output
You must be care of the pull-up resistor option.
Figure 9-4. Port 1 High-Byte Control Register (P1CONH)
9-7
I/O PORTS
S3C9484/C9488/F9488
Port 1 Control Register, Low Byte (P1CONL)
E9H, R/W, Reset value:00H
MSB
.7
.6
P1.3
/ADC0
.5
.4
P1.2
/ADC1
.3
.2
P1.1
/ADC2
/BUZ
.1
.0
LSB
P1.0
/ADC3
/TBPWM
.7 .6
0x
10
11
Input mode
Push-pull output
Alternative function: ADC0 input
.5 .4
0x
10
11
Input mode
Push-pull output
Alternative function: ADC1 input
.3 .2
00
01
10
11
Input mode
Alternative function: BUZ output
Push-pull output
Alternative function: ADC2 input
.1 .0
00
01
10
11
NOTE:
Input mode
Alternative function: TBPWM output
Push-pull output
Alternative function: ADC3 input
You must be care of the pull-up resistor option.
Figure 9-5. Port 1 Low-Byte Control Register (P1CONL)
9-8
S3C9484/C9488/F9488
I/O PORTS
Port 1 Pull-up Resistor Control Register (P1PUR)
D3H, R/W, Reset value:FFH
MSB
.7
P1.7
.6
.5
P1.6
P1.5
.4
P1.4
.3
P1.3
.2
P1.2
.1
P1.1
.0
LSB
P1.0
P1PUR Pin Configuration Settings:
0
1
Pull-up resistor disable
Pull-up resistor enable
Figure 9-6. Port 1 Pull-up Resistor Control Register (P1PUR)
9-9
I/O PORTS
S3C9484/C9488/F9488
PORT 2
Port 2 is an 8-bit I/O port that you can use two ways:
— General-purpose I/O
— Alternative function
Port 2 is accessed directly by writing or reading the port 2 data register, P2 at location E2H.
Port 2 Control Register (P2CONH, P2CONL)
Port 2 pins are configured individually by bit-pair settings in two control registers located :
P2CONL (low byte, EBH) and P2CONH (high byte, EAH).
When you select output mode, a push-pull circuit is configured. In input mode, many different selections are
available:
— input mode
— Push-pull output mode
— Alternative function: LCD ‘SEG’ signal output – SEG3, SEG4, SEG5, SEG6, SEG7, SEG8, SEG9, SEG10
Port 2 Control Register, Low Byte (P2CONL)
EBH, R/W, Reset value:00H
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
P2.0/SEG3
P2.1/SEG4
P2.2/SEG5
P2.3/SEG6
P2CONL Pin Configuration Settings:
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative function: LCD SEG(6-3) signal output
Figure 9-7. Port 2 High-Byte Control Register (P2CONH)
9-10
S3C9484/C9488/F9488
I/O PORTS
Port 2 Control Register, Low Byte (P2CONL)
EBH, R/W, Reset value: 00H
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
P2.0/SEG3
P2.1/SEG4
P2.2/SEG5
P2.3/SEG6
P2CONL Pin Configuration Settings:
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative function: LCD SEG(6-3) signal output
Figure 9-8. Port 2 Low-Byte Control Register (P2CONL)
9-11
I/O PORTS
S3C9484/C9488/F9488
PORT 3
Port 3 is an 7-bit I/O Port that you can use two ways:
— General-purpose I/O
— Alternative function
Port 3 is accessed directly by writing or reading the port 3 data register, P3 at location E3H.
Port 3 Control / Interrupt Control Register (P3CONH, P3CONL)
Port 3 pins are configured individually by bit-pair settings in two control registers located:
P3CONL (low byte, EDH) , P3CONH (high byte, ECH).
When you select output mode, a push-pull circuit is configured. In input mode, many different selections are
available:
— Input mode.
— Push-pull output mode
— Alternative function: Timer A signal in/out mode – TAOUT(TAPWM), TACAP, TACK
— Alternative function: External interrupt input – INT0, INT1, INT2, INT3
— Alternative function: LCD ‘SEG’ signal output – SEG15, SEG16, SEG17, SEG18
— Alternative function: UART module – TXD/RXD
9-12
S3C9484/C9488/F9488
I/O PORTS
Port 3 Control Register, High-Byte (P3CONH)
ECH, R/W, Reset value:00H
MSB
.7
.6
P3.6
/TACAP
/INT3
.5
.4
P3.5
/TACK
/INT2
.3
.2
P3.4
/TAOUT
/INT1
.1
.0
LSB
P3.3
/SEG18
/INT0
.7 .6
00
01
10
11
Input mode with pull-up; External interrupt input (INT3); TACAP
Input mode; External interrupt input (INT3); TACAP
Push-pull output
Open-drain output
.5 .4
00
01
10
11
Input mode with pull-up; External interrupt input (INT2); TACK
Input mode; External interrupt input (INT2); TACK
Push-pull output
Open-drain output
.3 .2
00
01
10
11
Input mode with pull-up; External interrupt input (INT1)
Input mode; External interrupt input (INT1)
Push-pull output
Alternative mode; TAOUT(TAPWM) output
.1 .0
00
01
10
11
NOTE:
Input mode with pull-up; External interrupt input (INT0)
Input mode; External interrupt input (INT0)
Push-pull output
Alternative mode: LCD SEG18 signal output
Reset value of P3CONH is determined by Smart Option 3DH .
Figure 9-9. Port 3 High-Byte Control Register (P3CONH)
9-13
I/O PORTS
S3C9484/C9488/F9488
Port 3 Control Register, Low Byte (P3CONL)
EDH, R/W, Reset value:00H
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
P3.0/SEG15
P3.1/SEG16/RXD
P3.2/SEG17/TXD
.7 .6 .5
000
001
010
011
1xx
Input mode with pull-up
Input mode
Push-pull output
Alternative mode; TXD output
Alternative mode; LCD SEG17 signal output
.4 .3 .2
000
001
010
011
1xx
Input mode with pull-up; RXD input
Input mode; RXD input
Push-pull output
Alternative mode: RXD output
Alternative mode: LCD SEG16 signal output
.1 .0
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative mode; LCD SEG15 signal output
Figure 9-10. Port 3 Low-Byte Control Register (P3CONL)
9-14
S3C9484/C9488/F9488
I/O PORTS
Port 3 Interrupt Control Register (P3INT)
EEH, R/W, Reset value:00H
MSB
.7
.6
.5
INT3
.4
.3
INT2
.2
.1
INT1
.0
LSB
INT0
Interrupt Enable/Disable Selection
0x
10
11
Interrupt disable
Interrupt enable; falling edge
Interrupt enable; rising edge
Figure 9-12. Port 3 Interrupt Control Register (P3INT)
Port 3 Interrupt Pending Register (P3PND)
EFH, R/W, Reset value:00H
MSB
.7
.6
.5
Not used
.4
.3
.2
.1
.0
LSB
INT3 INT2 INT1 INT0
Pending Bit:
0
1
No interrupt pending (When write, pending clear)
Interrupt is pending
Figure 9-13. Port 3 Interrupt Pending Register (P3PND)
9-15
I/O PORTS
S3C9484/C9488/F9488
PORT 4
Port 4 is an 7-bit I/O port with individually configurable pins. Port 4 pins are accessed directly by writing or reading
the port 4 data register, P4 at location E4H. P4.0-P4.6 can serve as inputs (with or without pull-up), and push-pull
output. And they can serve as segment pins for LCD.
Port 4 Control Register (P4CONH, P4CONL)
Port 4 pins are configured individually by bit-pair settings in two control registers located :
P4CONL (low byte, F1H) , P4CONH (high byte, F0H)
When you select output mode, a push-pull circuit is configured. In input mode, many different selections are
available:
— Input mode.
— Push-pull output mode
— Alternative function: LCD ‘SEG’ signal output – SEG0, SEG1, SEG2, SEG11, SEG12, SEG13, SEG14
Port 4 Control Register, High-Byte (P4CONH)
F0H, R/W, Reset value:00H
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
P4.4/SEG12
P4.5/SEG13
P4.6/SEG14
Not used
.5 .4
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative mode: LCD SEG14 signal output
.3 .2
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative mode: LCD SEG13 signal output
.1 .0
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative mode: LCD SEG12 signal output
Figure 9-14. Port 4 High-Byte Control Register (P4CONH)
9-16
S3C9484/C9488/F9488
I/O PORTS
Port 4 Control Register, Low-Byte (P4CONL)
F1H, R/W, Reset value:00H
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
P4.0/SEG0
P4.1/SEG1
P4.2/SEG2
P4.3/SEG11
.7 .6
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative mode: LCD SEG11 signal output
.5 .4
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative mode: LCD SEG2 signal output
.3 .2
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative mode: LCD SEG1 signal output
.1 .0
00
01
10
11
Input mode with pull-up
Input mode
Push-pull output
Alternative mode: LCD SEG0 signal output
Figure 9-15. Port 4 Low-Byte Control Register (P4CONL)
9-17
I/O PORTS
S3C9484/C9488/F9488
NOTES
9-18
S3C9484/C9488/F9488
10
BASIC TIMER
BASIC TIMER
OVERVIEW
BASIC TIMER (BT)
You can use the basic timer (BT):
— To signal the end of the required oscillation stabilization interval after a reset or a Stop mode release.
The functional components of the basic timer block are:
— Clock frequency divider (fxx divided by 4096, 1024 or 128) with multiplexer
— 8-bit basic timer counter, BTCNT (DDH, read-only)
— Basic timer control register, BTCON (DCH, read/write)
BASIC TIMER CONTROL REGISTER (BTCON)
The basic timer control register, BTCON, is used to select the input clock frequency, to clear the basic timer counter
and frequency dividers. It is located in address DCH, and is read/write addressable using register addressing mode.
A reset clears BTCON to '00H'. This enables selects a basic timer clock frequency of fXX/4096.
The 8-bit basic timer counter, BTCNT (DDH), can be cleared at any time during normal operation by writing a "1" to
BTCON.1. To clear the frequency dividers, write a "1" to BTCON.0.
10-1
BASIC TIMER
S3C9484/C9488/F9488
Basic Timer Control Register (BTCON)
DCH, R/W, Reset value:00H
MSB
.7
.6
.5
Not used
.4
.3
.2
.1
.0
LSB
Divider clear bit:
0 = No effect
1 = Clear divider
Basic timer counter clear bit:
0 = No effect
1 = Clear BTCNT
Basic timer input clock selection bit:
00 = fxx/4096
01 = fxx/1024
10 = fxx/128
11 = Not used
Figure 10-1. Basic Timer Control Register (BTCON)
10-2
S3C9484/C9488/F9488
BASIC TIMER
BASIC TIMER FUNCTION DESCRIPTION
Oscillation Stabilization Interval Timer Function
You can also use the basic timer to program a specific oscillation stabilization interval following a reset or when Stop
mode has been released by an external interrupt.
In Stop mode, whenever a reset or an external interrupt occurs, the oscillator starts. The BTCNT value then starts
increasing at the rate of fxx/4096 (for reset), or at the rate of the preset clock source (for an external interrupt). When
BTCNT.4 overflows, a signal is generated to indicate that the stabilization interval has elapsed and to gate the clock
signal off to the CPU so that it can resume normal operation.
In summary, the following events occur when stop mode is released:
1.
During stop mode, a power-on reset or an interrupt occurs to trigger the Stop mode release and oscillation
starts.
2.
If a power-on reset occurred, the basic timer counter will increase at the rate of fxx/4096. If an interrupt is used
to release stop mode, the BTCNT value increases at the rate of the preset clock source.
3.
Clock oscillation stabilization interval begins and continues until bit 4 of the basic timer counter overflows.
4.
When a BTCNT.4 overflow occurs, normal CPU operation resumes.
Bit 1
RESET or STOP
Bits 3, 2
Data Bus
Clear
fxx/4096
fxx
DIV
fxx/1024
MUX
8-Bit Up Counter
(BTCNT, Read-Only)
fxx/128
R
Start the CPU (note)
Bit 0
NOTE:
During a power-on reset operation, the CPU is idle during the required oscillation
stabilization interval (until bit 4 of the basic timer counter overflows).
Figure 10-2. Basic Timer Block Diagram
10-3
BASIC TIMER
S3C9484/C9488/F9488
NOTES
10-4
S3C9484/C9488/F9488
11
8-BIT TIMER A/B
8-BIT TIMER A/B
8-BIT TIMER A
OVERVIEW
The 8-bit timer A is an 8-bit general-purpose timer/counter. Timer A has three operating modes, you can select one
of them using the appropriate TACON setting:
— Interval timer mode (Toggle output at TAOUT pin)
— Capture input mode with a rising or falling edge trigger at the TACAP pin
— PWM mode (TAOUT)
Timer A has the following functional components:
— Clock frequency divider (fxx divided by 1024, 256, or 64) with multiplexer
— External clock input pin (TACK)
— 8-bit counter (TACNT), 8-bit comparator, and 8-bit reference data register (TADATA)
— I/O pins for capture input (TACAP) or PWM or match output (TAOUT)
— Timer A overflow interrupt and match/capture interrupt generation
— Timer A control register, TACON (F3H, read/write)
11-1
8-BIT TIMER A/B
S3C9484/C9488/F9488
FUNCTION DESCRIPTION
Timer A Interrupts
The timer A module can generate two interrupts: the timer A overflow interrupt (TAOVF), and the timer A match/
capture interrupt (TAINT).
Timer A overflow interrupt pending condition must be cleared by software when it has been serviced. Timer A
match/capture interrupt, TAINT pending condition is also cleared by software when it has been serviced.
Interval Timer Function
The timer A module can generate an interrupt: the timer A match interrupt (TAINT).
When timer A interrupt occurs and is serviced by the CPU, the pending condition have to be cleared by software.
In interval timer mode, a match signal is generated and TAOUT is toggled when the counter value is identical to the
value written to the TA reference data register, TADATA. The match signal generates a timer A match interrupt and
clears the counter.
If, for example, you write the value 10H to TADATA and 0AH to TACON, the counter will increment until it reaches
10H. At this point, the TA interrupt request is generated, the counter value is reset, and counting resumes.
Pulse Width Modulation Mode
Pulse width modulation (PWM) mode lets you program the width (duration) of the pulse that is output at the TAOUT
pin. As in interval timer mode, a match signal is generated when the counter value is identical to the value written to
the timer A data register. In PWM mode, however, the match signal does not clear the counter. Instead, it runs
continuously, overflowing at FFH, and then continues incrementing from 00H.
Although you can use the match signal to generate a timer A overflow interrupt, interrupts are not typically used in
PWM-type applications. Instead, the pulse at the TAOUT pin is held to Low level as long as the reference data value
is less than or equal to ( ≤ ) the counter value and then the pulse is held to High level for as long as the data value is
greater than ( > ) the counter value. One pulse width is equal to tCLK • 256 .
Capture Mode
In capture mode, a signal edge that is detected at the TACAP pin opens a gate and loads the current counter value
into the TADATA register. You can select rising or falling edges to trigger this operation.
Timer A also gives you capture input source: the signal edge at the TACAP pin. You select the capture input by
setting the value of the timer A capture input selection bit in the port 3 high–byte control register, P3CONH, (ECH).
When P3CONH.5.4 is 00 and 01, the TACAP input or normal input is selected. When P3CONH.5.4 is set to 10 and
11, output is selected.
Both kinds of timer A interrupts can be used in capture mode: the timer A overflow interrupt is generated whenever a
counter overflow occurs; the timer A match/capture interrupt is generated whenever the counter value is loaded into
the TADATA register.
By reading the captured data value in TADATA, and assuming a specific value for the timer A clock frequency, you
can calculate the pulse width (duration) of the signal that is being input at the TACAP pin.
11-2
S3C9484/C9488/F9488
8-BIT TIMER A/B
TIMER A CONTROL REGISTER (TACON)
You use the timer A control register, TACON
— Select the timer A operating mode (interval timer, capture mode and PWM mode)
— Select the timer A input clock frequency
— Clear the timer A counter, TACNT
— Enable the timer A overflow interrupt or timer A match/capture interrupt
— Timer A start/stop
— Clear timer A match/capture interrupt pending conditions
TACON is located at address F3H, and is read/write addressable using Register addressing mode.
A reset clears TACON to '00H'. This sets timer A to normal interval timer mode, selects an input clock frequency of
fxx/1024, and disables all timer A interrupts. You can clear the timer A counter at any time during normal operation
by writing a "1" to TACON.3. You can start the timer A counter by writing a “1” to TACON.0.
The timer A overflow interrupt (TAOVF) has the vector address 00H-01H. When a timer A overflow interrupt occurs
and is serviced by the CPU, but the pending condition must clear by software.
To enable the timer A match/capture interrupt , you must write TACON.1 to "1". To generate the exact time interval,
you should write TACON.3 and .0, which cleared counter and interrupt pending bit. When interrupt service routine is
served, the pending condition must be cleared by software by writing a ‘0’ to the interrupt pending bit.
Timer A Control Register (TACON)
F3H, R/W, Reset: 00H
MSB
.7
.6
.5
.4
Timer A input clock selection bit:
00 = fxx/1024
01 = fxx/256
10 = fxx/64
11 = External clock (TACK)
Timer A operating mode selection bit:
00 = Interval mode (TAOUT mode)
01 = Capture mode (capture on rising edge,
counter running, OVF can occur)
10 = Capture mode (capture on falling edge,
counter running, OVF can occur)
11 = PWM mode (OVF interrupt and match
interrupt can occur)
.3
.2
.1
.0
LSB
Timer A start/stop bit:
0 = Stop timer A
1 = Start timer A
Timer A match/capture interrupt
enable bit:
0 = Disable interrupt
1 = Enable interrrupt
Timer A overflow interrupt enable bit:
0 = Disable overflow interrupt
1 = Enable overflow interrrupt
Timer A counter clear bit:
0 = No effect
1 = Clear the timer A counter (when write)
NOTE:
When th counter clear bit(.3) is set, the 8-bit counter is cleared and
it also is cleared automatically.
Figure 11-1. Timer A Control Register (TACON)
11-3
8-BIT TIMER A/B
S3C9484/C9488/F9488
Timer Interrupt Pending Register (TINTPND)
F2H, Reset: 00H, R/W
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Timer A macth/capture
interrupt pending flag:
0 = Not pending
0 = Clear pending bit
(When write)
1 = Interrupt pending
Not Used
Timer B underflow
interrupt pending flag:
0 = Not pending
0 = Clear pending bit
(When write)
1 = Interrupt pending
Timer A overflow
interrupt pending flag:
0 = Not pending
0 = Clear pending bit
(When write)
1 = Interrupt pending
Figure 11-2. Timer interrupts Pending Register (TINTPND)
Timer A Data Register (TADATA)
F5H, R/W
MSB
.7
.6
.5
.4
.3
.2
.1
.0
Reset Value: FFh
Figure 11-3. Timer A DATA Register (TADATA)
11-4
LSB
S3C9484/C9488/F9488
8-BIT TIMER A/B
BLOCK DIAGRAM
TACON.2
Overflow
TACON.7-.6
Data Bus
TACON.0
fxx/1024
fxx/256
M
U
X
fxx/64
Pending
TINTPND.1
8
8-bit Up-Counter
(Read Only)
TAOVF
Clear
TACON.3
TACK
8-bit Comparator
TACAP
M
U
X
TACON.1
Match
M
U
X
Timer A Buffer Reg
TAINT
Pending
TINTPND.0
M
U
X
TAOUT
TACON.5.4
Timer A Data Register
(Read/Write)
TACON.5.4
8
Data Bus
NOTES:
1. When PWM mode, match signal cannot clear counter.
2. Pending bit is located at TINTPND register.
Figure 11-4. Timer A Functional Block Diagram
11-5
8-BIT TIMER A/B
S3C9484/C9488/F9488
8-BIT TIMER B
OVERVIEW
The S3C9484/C9488/F9488 micro-controller has an 8-bit counter called timer B. Timer B, which can be used to
generate the carrier frequency of a remote controller signal. As a normal interval timer, generating a timer B interrupt
at programmed time intervals.
TBCON.6-.7
TBCON.2
TBCON.0
fxx/1
fxx/2
fxx/4
fxx/8
M
U
X
CLK
Repeat
Control
TBCON.4-.5
8-Bit
Down Counter
T-FF
MUX
TBCON.3
Pending
Timer B Data
Low Byte Register
TBPWM
TB Underflow
(TBUF)
TBINT
TINTPND.2
Timer B Data
High Byte Register
Data Bus
NOTE:
In case of setting TBCON.5-.4 at '10', the value of the TBDATAL register is loaded into
the 8-bit counter when the operation of the timer B starts. And then if a underflow occurs
in the counter, the value of the TBDATAH register is loaded with the value of the 8-bit counter.
However, if the next borrow occurs, the value of the TBDATAL register is loaded with the value of
the 8-bit counter.
Figure 11-5. Timer B Functional Block Diagram
11-6
S3C9484/C9488/F9488
8-BIT TIMER A/B
Timer B Control Register (TBCON)
F8H, R/W, Reset: 00H
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Timer B output flip-flop
control bit:
0 = T-FF is low
1 = T-FF is high
Timer B input clock selection bit:
00 = fxx/1
01 = fxx/2
10 = fxx/4
11 = fxx/8
Timer B interrupt time selection bit:
00 = Interrupt on TBDATAL underflow
01 = Interrupt on TBDATAH underflow
10 = Interrupt on TBDATAH and TBDATAL underflow
11 = Invaild setting
Timer B mode selection bit:
0 = One-shot mode
1 = Repeating mode
Timer B start/stop bit:
0 = Stop timer B
1 = Start timer B
Timer B underflow interrupt
enable bit:
0 = Disable interrupt
1 = Enable interrupt
Figure 11-6. Timer B Control Register (TBCON)
Timer B Data High-Byte Register (TBDATAH)
F6H, R/W
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Reset Value: FFh
Timer B Data Low-Byte Register (TBDATAL)
F7H, R/W
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Reset Value: FFh
Figure 11-7. Timer B DATA Registers (TBDATAH, TBDATAL)
11-7
8-BIT TIMER A/B
S3C9484/C9488/F9488
+ Programming Tip – Using Timer A (fxx – 8MHz,
800µsec interval)
.INCLUDE
"C:\SKSTUDIO\INCLUDE\REG\S3C9488.REG"
VECTOR
00H,F9488_INT
.ORG
DB
DB
DB
DB
003CH
0FFH
0FFH
01100000B
00000011B
.ORG
100H
;DISABLE LVR
;SUB OSCILLATOR,BT OVERFLOW, RESET PIN ENALBE
RESET:
DI
LD
WDTCON,#10101010B
LD
BTCON,#0001011B
LD
CLKCON,#00011000B
LD
SP,#0C0H
LD
SYM,#00H
LD
OSCCON,#00000000B
LD
P3CONH,#10101110B
;TAOUT
LD
TADATA,#100
LD
TACON,#10001011B
;Fxx/64,INTERVAL MODE,TIMER START.
EI
;================================================================================
MAIN
JP
MAIN
;================================================================================
F9488_INT
TM
TINTPND,#01H
;CHECK WHAT INTERRUPT IS ENABLED
JP
NC,TA_MC_INT
;..........
IRET
TA_MC_INT
LD
NOP
NOP
IRET
.END
11-8
TINTPND,#0
S3C9484/C9488/F9488
8-BIT TIMER A/B
+ Programming Tip – Using Timer B (fxx – 8MHz,
Duty – 2:8, 80kHz)
.INCLUDE
"C:\SKSTUDIO\INCLUDE\REG\S3C9488.REG"
VECTOR
00H,F9488_INT
.ORG
003CH
DB
DB
DB
DB
.ORG
0FFH
0FFH
01100000B
00000011B
;DISABLE LVR
;SUB OSCILLATOR,BT OVERFLOW, RESET PIN ENALBE
100H
RESET:
DI
LD
LD
LD
LD
LD
LD
LD
LD
LD
LD
EI
WDTCON,#10101010B
BTCON,#0001011B
CLKCON,#00011000B
SP,#0C0H
SYM,#00H
OSCCON,#00000000B
P1CONL,#10101001B
TBDATAH,#79
TBDATAL,#19
TBCON,#00101111B
;TB PWM
;Fxx,REPEAT MODE,FLIP-FLOP HIGH,TIMER START.
;================================================================================
MAIN
JP
MAIN
;================================================================================
F9488_INT
TM
TINTPND,#04H
;CHECK WHAT INTERRUPT IS ENABLED
JP
NC,TB_UF_INT
;..........
IRET
TB_UF_INT
LD
NOP
NOP
IRET
TINTPND,#0
.END
11-9
8-BIT TIMER A/B
S3C9484/C9488/F9488
NOTES
11-10
S3C9484/C9488/F9488
12
UART
UART
OVERVIEW
The UART block has a full-duplex serial port with programmable operating modes: There is one synchronous mode
and three UART (Universal Asynchronous Receiver/Transmitter) modes:
— Shift Register I/O with baud rate of fxx/(16 × (16bit BRDATA+1))
— 8-bit UART mode; variable baud rate, fxx/(16 × (16bit BRDATA+1))
— 9-bit UART mode; variable baud rate, fxx/(16 × (16bit BRDATA+1))
UART receive and transmit buffers are both accessed via the data register, UDATA, is at address FFH. Writing to
the UART data register loads the transmit buffer; reading the UART data register accesses a physically separate
receive buffer.
When accessing a receive data buffer (shift register), reception of the next byte can begin before the previously
received byte has been read from the receive register. However, if the first byte has not been read by the time the
next byte has been completely received, the first data byte will be lost (Overrun error).
In all operating modes, transmission is started when any instruction (usually a write operation) uses the UDATA
register as its destination address. In mode 0, serial data reception starts when the receive interrupt pending bit
(UARTPND.1) is "0" and the receive enable bit (UARTCON.4) is "1". In mode 1 and 2, reception starts whenever an
incoming start bit ("0") is received and the receive enable bit (UARTCON.4) is set to "1".
PROGRAMMING PROCEDURE
To program the UART modules, follow these basic steps:
1.
Configure P3.1 and P3.2 to alternative function (RXD (P3.1), TXD (P3.2)) for UART module by setting the
P3CONL register to appropriate value.
2.
Load an 8-bit value to the UARTCON control register to properly configure the UART I/O module.
3.
For parity generation and check in UART mode 2, set parity enable bit (UARTPND.5) to “1”.
4.
For interrupt generation, set the UART interrupt enable bit (UARTCON.1 or UARTCON.0) to "1".
5.
When you transmit data to the UART buffer, write transmit data to UDATA, the shift operation starts.
6.
When the shift operation (transmit/receive) is completed, UART pending bit (UARTPND.1 or UARTPND.0) is set
to "1" and an UART interrupt request is generated.
12-1
UART
S3C9484/C9488/F9488
UART CONTROL REGISTER (UARTCON)
The control register for the UART is called UARTCON at address FDH. It has the following control functions:
— Operating mode and baud rate selection
— Multiprocessor communication and interrupt control
— Serial receive enable/disable control
— 9th data bit location for transmit and receive operations (mode 2)
— Parity generation and check for transmit and receive operations (mode 2)
— UART transmit and receive interrupt control
A reset clears the UARTCON value to "00H". So, if you want to use UART module, you must write appropriate value
to UARTCON.
12-2
S3C9484/C9488/F9488
UART
UART Control Register (UARTCON)
FDH, R/W, Reset Value: 00H
MSB
MS1
MS0
MCE
RE
TB8
RB8
RIE
TIE
LSB
Transmit interrupt enable bit:
0 = Disable
1 = Enable
Operating mode and
baud rate selection bits
(see table below)
Multiprocessor communication
enable bit (mode 2 only):(1)
0 = Disable
1 = Enable
Serial data receive enable bit:
0 = Disable
1 = Enable
Received interrupt enable bit:
0 = Disable
1 = Enable
If parity disable mode (PEN = 0),
location of the 9th data bit that was received
in UART mode 2 ("0" or "1").
If parity enable mode (PEN = 1),
Even/odd parity selection bit for receive data
If parity disable mode (PEN = 0),
location of the 9th data bit to be transmitted in UART mode 2.
0: Even parity check for the received data
in UART mode 2 ("0" or "1").
1: Odd parity check for the received data
If parity enable mode (PEN = 1),
Even/odd parity selection bit for transmit data
in UART mode 2;
0: Even parity bit generation for transmit data
1: Odd parity bit generation for transmit data
MS1 MS0
0
0
1
0
1
x
Mode Description
0
1
2
Shift register
8-bit UART
9-bit UART
Baud Rate
fxx / (16 x (16bit BRDATA + 1))
fxx / (16 x (16bit BRDATA + 1))
fxx / (16 x (16bit BRDATA + 1))
NOTES:
1. In mode 2, if the UARTCON.5 bit is set to "1" then the receive interrupt will not be
activated if the received 9th data bit is "0". In mode 1, if UARTCON.5 = "1" then the
receive interrut will not be activated if a valid stop bit was not received.
2. The descriptions for 8-bit and 9-bit UART mode do not include start and stop bits
of serial data for receiving and transmitting.
3. Parity enable bits, PEN, is located in the UARTPND register at address FEH.
4. Parity enable and parity error check can be available in 9-bit UART mode
(Mode 2) only.
Figure 12-1. UART Control Register (UARTCON)
12-3
UART
S3C9484/C9488/F9488
UART INTERRUPT PENDING REGISTER (UARTPND)
The UART interrupt pending register, UARTPND is located at address FEH. It contains the UART data transmit
interrupt pending bit (UARTPND.0) and the receive interrupt pending bit (UARTPND.1).
In mode 0 of the UART module, the receive interrupt pending flag UARTPND.1 is set to "1" when the 8th receive data
bit has been shifted. In mode 1 or 2, the UARTPND.1 bit is set to "1" at the halfway point of the stop bit's shift time.
When the CPU has acknowledged the receive interrupt pending condition, the UARTPND.1 flag must be cleared by
software in the interrupt service routine.
In mode 0 of the UART module, the transmit interrupt pending flag UARTPND.0 is set to "1" when the 8th transmit
data bit has been shifted. In mode 1 or 2, the UARTPND.0 bit is set at the start of the stop bit. When the CPU has
acknowledged the transmit interrupt pending condition, the UARTPND.0 flag must be cleared by software in the
interrupt service routine.
UART Pending Register (UARTPND)
FEH, R/W, Reset Value: 00H
MSB
.7
.6
PEN RPE
Not used
UART parity enable/disable:
0 = Disable
1 = Enable
UART receive parity error:
0 = No error
1 = Parity error
.3
.2
Not used
RIP
TIP
LSB
UART transmit interrupt pending flag:
0 = Not pending
0 = Clear pending bit (when write)
1 = Interrupt pending
UART receive interrupt pending flag:
0 = Not pending
0 = Clear pending bit (when write)
1 = Interrupt pending
NOTES:
1. In order to clear a data transmit or receive interrupt pending flag, you must write a "0"
to the appropriate pending bit. A "0" has no effect.
2. To avoid errors, we recommended using load instruction, when manipulating
UARTPND value.
3. Parity enable and parity error check can be available in 9-bit UART mode
(Mode 2) only.
4. Parity error bit (RPE) will be refreshed whenever 8th receive data bit has been
shifted.
Figure 12-2. UART Interrupt Pending Register (UARTPND)
12-4
S3C9484/C9488/F9488
UART
In mode 2 (9-bit UART data), by setting the parity enable bit (PEN) of UARTPND register to '1', the 9th data bit of
transmit data will be an automatically generated parity bit. Also, the 9th data bit of the received data will be treated as
a parity bit for checking the received data.
In parity enable mode (PEN = 1), UARTCON.3 (TB8) and UARTCON.2 (RB8) will be a parity selection bit for transmit
and receive data respectively. The UARTCON.3 (TB8) is for settings of the even parity generation (TB8 = 0) or the
odd parity generation (TB8 = 0) in the transmit mode. The UARTCON.2 (RB8) is also for settings of the even parity
checking (RB8= 0) or the odd parity checking (RB8 =1) in the receive mode. The parity enable (generation/checking)
functions are not available in UART mode 0 and 1.
If you don’t want to use a parity mode, UARTCON.2 (RB8) and UARTCON.3 (TB8) are a normal control bit as the 9th
data bit, in this case, PEN must be disable (“0”) in mode 2. Also it is needed to select the 9th data bit to be
transmitted by writing TB8 to "0" or "1".
The receive parity error flag (RPE) will be set to ‘0’ or ‘1’ depending on parity error whenever the 8th data bit of the
receive data has been shifted.
UART DATA REGISTER (UDATA)
UART Data Register (UDATA)
FFH, R/W, Reset Value: Undefined
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Transmit or Receive data
Figure 12-3. UART Data Register (UDATA)
12-5
UART
S3C9484/C9488/F9488
UART BAUD RATE DATA REGISTER (BRDATAH, BRDATAL)
The value stored in the UART baud rate register, (BRDATAH, BRDATAL), lets you determine the UART clock rate
(baud rate).
UART Baud Rate Data Register
(BRDATAH) DAH, R/W, Reset Value: FFH
(BRDATAL) DBH, R/W, Reset Value: FFH
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Baud rate data
Figure 12-4. UART Baud Rate Data Register (BRDATAH, BRDATAL)
BAUD RATE CALCULATIONS
The baud rate is determined by the baud rate data register, 16bit BRDATA
Mode 0 baud rate = fxx/(16 × (16Bit BRDATA + 1))
Mode 1 baud rate = fxx/(16 × (16Bit BRDATA + 1))
Mode 2 baud rate = fxx/(16 × (16Bit BRDATA + 1))
12-6
S3C9484/C9488/F9488
UART
Table 12-1. Commonly Used Baud Rates Generated by 16-bit BRDATA
Baud Rate
Oscillation Clock
BRDATAH
BRDATAL
Decimal
Hex
Decimal
Hex
230,400 Hz
11.0592 MHz
0
0H
02
02H
115,200 Hz
11.0592 MHz
0
0H
05
05H
57,600 Hz
11.0592 MHz
0
0H
11
0BH
38,400 Hz
11.0592 MHz
0
0H
17
11H
19,200 Hz
11.0592 MHz
0
0H
35
23H
9,600 Hz
11.0592 MHz
0
0H
71
47H
4,800 Hz
11.0592 MHz
0
0H
143
8FH
76,800 Hz
10 MHz
0
0H
7
7H
38,400 Hz
10 MHz
0
0H
15
FH
19,200 Hz
10 MHz
0
0H
31
1FH
9,600 Hz
10 MHz
0
0H
64
40H
4,800 Hz
10 MHz
0
0H
129
81H
2,400 Hz
10 MHz
1
1H
3
3H
600 Hz
10 MHz
4
4H
16
10H
38,461 Hz
8 MHz
0
0H
12
0CH
12,500 Hz
8 MHz
0
0H
39
27H
19,230 Hz
4 MHz
0
0H
12
0CH
9,615 Hz
4 MHz
0
0H
25
19H
12-7
UART
S3C9484/C9488/F9488
BLOCK DIAGRAM
SAM88 Internal Data Bus
TB8
fxx
MS0
MS1
16 BIT
BRDATA
S
D
Q
CLK
CLK
Baud Rate
Generator
Write to
UDATA
UDATA
MS0
MS1
RxD (P3.1)
Zero Detector
Start
Tx Control
Tx Clock
TxD (P3.2)
Shift
EN
Send
TIP
TxD (P3.2)
Shift
Clock
TIE
Interrupt
RIE
Rx Clock
RE
RIE
RIP
Receive
Rx Control
Start
1-to-0
Transition
Detector
MS0
MS1
Shift
Shift
Value
Bit Detector
Shift
Register
UDATA
RxD (P3.1)
SAM88 Internal Data Bus
Figure 12-5. UART Functional Block Diagram
12-8
S3C9484/C9488/F9488
UART
UART MODE 0 FUNCTION DESCRIPTION
In mode 0, UART is input and output through the RxD (P3.1) pin and TxD (P3.2) pin outputs the shift clock. Data is
transmitted or received in 8-bit units only. The LSB of the 8-bit value is transmitted (or received) first.
Mode 0 Transmit Procedure
1.
Select mode 0 by setting UARTCON.6 and .7 to "00B".
2.
Write transmission data to the shift register UDATA (FFH) to start the transmission operation.
Mode 0 Receive Procedure
1.
Select mode 0 by setting UATCON.6 and .7 to "00B".
2.
Clear the receive interrupt pending bit (UARTPND.1) by writing a "0" to UARTPND.1.
3.
Set the UART receive enable bit (UARTCON.4) to "1".
4.
The shift clock will now be output to the TxD (P3.2) pin and will read the data at the RxD (P3.1) pin. A UART
receive interrupt (vector 00H-01H) occurs when UARTCON.1 is set to "1".
Write to Shift Register (UDATA)
RxD (Data Out)
D0
D1
D2
D3
D4
D5
D6
Transmit
Shift
D7
TxD (Shift Clock)
TIP
Write to UARTPND (Clear RIP and set RE)
RIP
Receive
RE
Shift
D0
RxD (Data In)
D1
D2
D3
D4
D5
D6
D7
TxD (Shift Clock)
1
2
3
4
5
6
7
8
Figure 12-6. Timing Diagram for UART Mode 0 Operation
12-9
UART
S3C9484/C9488/F9488
UART MODE 1 FUNCTION DESCRIPTION
In mode 1, 10-bits are transmitted (through the TxD (P3.2) pin) or received (through the RxD (P3.1) pin). Each data
frame has three components:
— Start bit ("0")
— 8 data bits (LSB first)
— Stop bit ("1")
When receiving, the stop bit is written to the RB8 bit in the UARTCON register. The baud rate for mode 1 is variable.
Mode 1 Transmit Procedure
1.
Select the baud rate generated by 16bit BRDATA.
2.
Select mode 1 (8-bit UART) by setting UARTCON bits 7 and 6 to '01B'.
3.
Write transmission data to the shift register UDATA (FFH). The start and stop bits are generated automatically
by hardware.
Mode 1 Receive Procedure
1.
Select the baud rate to be generated by 16bit BRDATA.
2.
Select mode 1 and set the RE (Receive Enable) bit in the UARTCON register to "1".
3.
The start bit low ("0") condition at the RxD (P3.1) pin will cause the UART module to start the serial data receive
operation.
Tx
Clock
Shift
TxD
D0
D1
D2
D3
D4
D5
D6
D7
Start Bit
D0
D1
D2
D3
D4
D5
D6
Start Bit
Stop Bit
Transmit
Write to Shift Register (UDATA)
TIP
Rx
Clock
RxD
D7
Stop Bit
Receive
Bit Detect Sample Time
Shift
RIP
Figure 12-7. Timing Diagram for UART Mode 1 Operation
12-10
S3C9484/C9488/F9488
UART
UART MODE 2 FUNCTION DESCRIPTION
In mode 2, 11-bits are transmitted (through the TxD pin) or received (through the RxD pin). Each data frame has four
components:
— Start bit ("0")
— 8 data bits (LSB first)
— Programmable 9th data bit or parity bit
— Stop bit ("1")
< In parity disable mode (PEN = 0) >
The 9th data bit to be transmitted can be assigned a value of "0" or "1" by writing the TB8 bit (UARTCON.3).
When receiving, the 9th data bit that is received is written to the RB8 bit (UARTCON.2), while the stop bit is ignored.
The baud rate for mode 2 is fosc/(16 x (16bit BRDATA + 1)) clock frequency.
< In parity enable mode (PEN = 1) >
The 9th data bit to be transmitted can be an automatically generated parity of "0" or "1" depending on a parity
generation by means of TB8 bit (UARTCON.3). When receiving, the received 9th data bit is treated as a parity for
checking receive data by means of the RB8 bit (UARTCON.2), while the stop bit is ignored. The baud rate for mode
2 is fosc/(16 × (16bit BRDATA + 1)) clock frequency.
Mode 2 Transmit Procedure
1. Select the baud rate generated by 16bit BRDATA.
2.
Select mode 2 (9-bit UART) by setting UARTCON bits 6 and 7 to '10B'. Also, select the 9th data bit to be
transmitted by writing TB8 to "0" or "1" and set PEN bit of UARTPND register to “0” if you don’t use a parity
mode. If you want to use the parity enable mode, select the parity bit to be transmitted by writing TB8 to "0" or
"1" and set PEN bit of UARTPND register to “1”.
3.
Write transmission data to the shift register, UDATA (FFH), to start the transmit operation.
Mode 2 Receive Procedure
1.
Select the baud rate to be generated by 16bit BRDATA.
2.
Select mode 2 and set the receive enable bit (RE) in the UARTCON register to "1".
3.
If you don’t use a parity mode, set PEN bit of UARTPND register to “0” to disable parity mode.
If you want to use the parity enable mode, select the parity type to be check by writing TB8 to "0" or "1" and set
PEN bit of UARTPND register to “1”. Only 8 bits (Bit0 to Bit7) of received data are available for data value.
4. The receive operation starts when the signal at the RxD pin goes to low level.
12-11
UART
S3C9484/C9488/F9488
Tx
Clock
Shift
TxD
Start Bit
D0
D1
D2
D3
D4
D5
D6
TIP
D7
Stop Bit
Transmit
Write to Shift Register (UARTDATA)
TB8 or Parity bit
RB8 or Parity bit
Rx
Clock
RxD
Start Bit
D0
D1
D2
D3
D4
D5
D6
D7
Stop
Bit
Receive
Bit Detect Sample Time
Shift
RIP
Figure 12-8. Timing Diagram for UART Mode 2 Operation
12-12
S3C9484/C9488/F9488
UART
SERIAL COMMUNICATION FOR MULTIPROCESSOR CONFIGURATIONS
The S3C9-series multiprocessor communication features let a "master" S3C9484/C9488/F9488 send a multipleframe serial message to a "slave" device in a multi- S3C9484/C9488/F9488 configuration. It does this without
interrupting other slave devices that may be on the same serial line.
This feature can be used only in UART mode 2 with the parity disable mode. In mode 2, 9 data bits are received. The
9th bit value is written to RB8 (UARTCON.2). The data receive operation is concluded with a stop bit. You can
program this function so that when the stop bit is received, the serial interrupt will be generated only if RB8 = "1".
To enable this feature, you set the MCE bit in the UARTCON registers. When the MCE bit is "1", serial data frames
that are received with the 9th bit = "0" do not generate an interrupt. In this case, the 9th bit simply separates the
address from the serial data.
Sample Protocol for Master/Slave Interaction
When the master device wants to transmit a block of data to one of several slaves on a serial line, it first sends out
an address byte to identify the target slave. Note that in this case, an address byte differs from a data byte: In an
address byte, the 9th bit is "1" and in a data byte, it is "0".
The address byte interrupts all slaves so that each slave can examine the received byte and see if it is being
addressed. The addressed slave then clears its MCE bit and prepares to receive incoming data bytes.
The MCE bits of slaves that were not addressed remain set, and they continue operating normally while ignoring the
incoming data bytes.
While the MCE bit setting has no effect in mode 0, it can be used in mode 1 to check the validity of the stop bit. For
mode 1 reception, if MCE is "1", the receive interrupt will be issue unless a valid stop bit is received.
12-13
UART
S3C9484/C9488/F9488
Setup Procedure for Multiprocessor Communications
Follow these steps to configure multiprocessor communications:
1.
Set all S3C9484/C9488/F9488 devices (masters and slaves) to UART mode 2 with parity disable.
2.
Write the MCE bit of all the slave devices to "1".
3.
The master device's transmission protocol is:
— First byte: the address
identifying the target
slave device (9th bit = "1")
— Next bytes: data
(9th bit = "0")
4.
When the target slave receives the first byte, all of the slaves are interrupted because the 9th data bit is "1". The
targeted slave compares the address byte to its own address and then clears its MCE bit in order to receive
incoming data. The other slaves continue operating normally.
Full-Duplex Multi-S3C9484/C9488/F9488 Interconnect
TxD
RxD
Master
S3C9484/
C9488/
F9488
TxD
RxD
Slave 1
S3C9484/
C9488/
F9488
TxD
TxD
RxD
Slave 2
S3C9484/
C9488/
F9488
...
RxD
Slave n
S3C9484/
C9488/
F9488
Figure 12-9. Connection Example for Multiprocessor Serial Data Communications
12-14
S3C9484/C9488/F9488
13
WATCH TIMER
WATCH TIMER
OVERVIEW
Watch timer functions include real-time and watch-time measurement and interval timing for the system clock. To
start watch timer operation, set bit 1 and bit 6 of the watch timer mode register, WTCON.1 and .6, to "1". After the
watch timer starts and elapses a time, the watch timer interrupt is automatically set to "1", and interrupt requests
commence in 3.9ms, 0.25 s, 0.5s or 1.0s intervals.
The watch timer can generate a steady 0.5kHz, 1kHz, 2 kHz or 4 kHz signal to the BUZZER output. By setting
WTCON.3 and WTCON.2 to "11b", the watch timer will function in high-speed mode, generating an interrupt every
3.91 ms. High-speed mode is useful for timing events for program debugging sequences.
The watch timer supplies the clock frequency for the LCD controller (fLCD ). Therefore, if the watch timer is
disabled, the LCD controller does not operate.
— Real-Time and Watch-Time Measurement
— Using a Main System or Subsystem Clock Source
— Clock Source Generation for LCD Controller
— Buzzer Output Frequency Generator
— Timing Tests in High-Speed Mode
13-1
WATCH TIMER
S3C9484/C9488/F9488
WATCH TIMER CONTROL REGISTER (WTCON)
Watch Timer Control Register (WTCON)
F9H, R/W, Reset: 00H
MSB
.7
.6
.5
.4
Watch Timer control selection bit :
0 = main system clock (fxx /128)
1 = sub system clock
Watch Timer interrupt enable bit :
0 = Disable watch timer interrupt
1 = enable watch timer interrupt
Buzzer Signal Selection bits:
00 = 0.5 kHz buzzer (BUZ) signal output
01 = 1 kHz buzzer (BUZ) signal output
10 = 2 kHz buzzer (BUZ) signal output
11 = 4 kHz buzzer (BUZ) signal output
.3
.2
.1
.0
LSB
Watch Timer interrupt pending bit :
0 = interrupt is not pending
(When write, pending bit cleared)
1 = interrupt is pending
Watch Timer enable bit:
0 = Disable Watch Timer
1 = Enable Watch Timer
Watch Timer Speed Selection Bits:
00 = Set watch timer interrupt to 1.0S
01 = Set watch timer interrupt to 0.5S
10 = Set watch timer interrupt to 0.25S
11 = Set watch timer interrupt to 3.91mS
NOTE: Fxx is assumed to be 4.195 MHz
Figure 13-1. Watch Timer Control Register (WTCON)
13-2
S3C9484/C9488/F9488
WATCH TIMER
WATCH TIMER CIRCUIT DIAGRAM
BUZZER Output
WTCON.5
WTCON.6
MUX
WTCON.4
WTCON.3
fw/64 (0.5 kHz)
fw/32 (1 kHz)
fw/16 (2 kHz)
fw/8 (4 kHz)
WTCON.2
WTCON.1
WTINT
Enable/Disable
Selector
Circuit
WTCON.0
fW/2 7
f W/2 13
WTCON.7
Clock
Selector
fW
32.768 kHz
Frequency
Dividing
Circuit
fW/214
fW/2 15
fLCD (2 kHZ)
fXT fxx/128
fxx = Selected clock between fx and fxt (4.195 MHz)
f XT = Subsystem Clock (32,768 Hz)
fw = Watch timer
Figure 13-1. Watch Timer Circuit Diagram
13-3
WATCH TIMER
S3C9484/C9488/F9488
+ PROGRAMMING TIP – Using The WATCH TIMER Display (3.91ms,4kHz buzzer out)
.INCLUDE
VECTOR
"C:\SKSTUDIO\INCLUDE\REG\S3C9488.REG"
00H,F9488_INT
.ORG
DB
DB
DB
DB
003CH
0FFH
0FFH
01100000B
00000011B
.ORG
100H
;DISABLE LVR
;SUB OSCILLATOR,BT OVERFLOW, RESET PIN ENALBE
RESET:
DI
LD
LD
LD
LD
LD
LD
LD
LD
EI
WDTCON,#10101010B
BTCON,#0001011B
CLKCON,#00011000B
SP,#0C0H
SYM,#00H
OSCCON,#00000000B
P1CONL,#10100110B
WTCON,#11111110B
;BUZZER OUTPUT
;SUB SYSTEM CLOCK, 4KHz,3.91ms interval
;================================================================================
MAIN
JP
MAIN
;================================================================================
F9488_INT
TM
JP
WTCON,#01H
NZ,WATCH_T_INT
;CHECK WHAT INTERRUPT PENDING BIT IS SET
;..........
IRET
WATCH_T_INT
AND
XOR
NOP
NOP
IRET
.END
13-4
WTCON,#0FEH
P1,#01H
;PORT TOGGLE WHENEVER INTERRUPT SERVICE
;ROUTINE IS EXECUTED
S3C9484/C9488/F9488
14
LCD CONTROLLER/DRIVER
LCD CONTROLLER / DRIVER
OVERVIEW
The S3C9484/C9488/F9488 micro-controller can directly drive an up-to-19-digit (19-segment) LCD panel. The LCD
module has the following components:
— LCD controller/driver
— Display RAM (00H-12H) for storing display data in page 1
— 19 segment output pins (SEG0 – SEG18)
— 8 common output pins (COM0 - COM7)
Bit settings in the LCD control register, LCDCON, determine the LCD frame frequency, duty and bias, and the
segment pins used for display output. When a subsystem clock is selected as the LCD clock source, the LCD
display is enabled even during stop and idle modes.
The LCD Voltage control register LCDVOL switches contrast output to segment/port.
LCD data stored in the display RAM locations are transferred to the segment signal pins automatically without
program control.
8-Bit Data Bus
COM0-COM7
8
LCD
Controller/
Driver
8
SEG0-SEG18
19
Figure 14-1. LCD Function Diagram
14-1
LCD CONTROLLER/DRIVER
S3C9484/C9488/F9488
LCD CIRCUIT DIAGRAM
8
8
8
12H.7
12H.6
12H.5
12H.4
12H.3
12H.2
12H.1
12H.0
SEG18
MUX 18
SEG17
SEG16
SEG15
SEG14
nH.7
nH.6
nH.5
nH.4
nH.3
nH.2
nH.1
nH.0
SEGn
Segment
Driver
MUX n
SEG4
SEG3
SEG2
SEG1
00H.7
00H.6
00H.5
00H.4
00H.3
00H.2
00H.1
00H.0
SEG0
MUX 0
fLCD
COM7
8
Timing
Controller
LCDCON
COM
Control
COM0
8
LCD
Voltage
Control
LCDVOL
NOTE:
f LCD = fW/24 , f W/2 5 , f W/2 6, fW /2 7
Figure 14-2. LCD Circuit Diagram
14-2
S3C9484/C9488/F9488
LCD CONTROLLER/DRIVER
LCD RAM ADDRESS AREA
RAM addresses 00H-12H of page 1 are used as LCD data memory. When the bit value of a display segment is "1",
the LCD display is turned on; when the bit value is "0", the display is turned off.
Display RAM data are sent out through segment pins SEG0-SEG18 using a direct memory access (DMA) method
that is synchronized with the fLCD signal. If these RAM addresses not used for LCD display, you can be allocated to
general-purpose use.
00H
BIT7
BIT6
BIT1
BIT0
SEG0
01H
BIT7
BIT6
BIT1
BIT0
SEG1
11H
BIT7
BIT6
BIT1
BIT0
SEG17
12H
BIT7
BIT6
BIT1
BIT0
SEG18
COM7
COM6
COM1
COM0
Figure 14-3. LCD Display Data RAM Organization
NOTE
In MDS(such as SK-1000), before changing PAGE(PAGE0 à PAGE1), you must disable global
interrupt(DI) and during accessing PAGE1, you don’t have to use “CALL” instruction.
14-3
LCD CONTROLLER/DRIVER
S3C9484/C9488/F9488
LCD CONTROL REGISTER (LCDCON), D0H
The LCD control register LCDCON is mapped to RAM addresses D0H. LCDCON controls these LCD functions:
— LCD module enable/disable control (LCDCON.7)
— LCD Duty and Bias selection (LCDCON.5- LCDCON.4)
— LCD dot on/off control bit (LCDCON.3- LCDCON.2)
— LCD clock frequency selection (LCDCON.1- LCDCON.0)
The LCD clock signal determines the frequency of COM signal scanning of each segment output. This is also
referred to as the 'frame frequency’ Since LCD clock is generated by dividing the watch timer clock (fw), the watch
timer must be enabled when the LCD display is turned on. RESET clears the LCDCON register values to logic zero.
This produces the following LCD control settings:
— LCD clock frequency is the watch timer clock (fw)/27 = 256 Hz
The LCD display can continue to operate during idle and stop modes if a subsystem clock is used as the watch
timer source.
LCD Converter Control Register (LCDCON)
D0H, R/W, Reset: 00H
MSB
.7
.6
.5
.4
LCD module enable/disable bit:
0 = LCD module disable
1 = LCD module enable
Not used
LCD Duty and Bias
selection bits:
00 = 1/8 duty, 1/4 bias
01 = 1/4 duty, 1/3 bias
1x = static
.3
.2
.1
LSB
LCD Clock selection bits:
00 = (fw) / 2 7
01 = (fw) / 2 6
10 = (fw) / 2 5
11 = (fw) / 2 4
LCD mode selection bits:
00 = Dot off signal
01 = Dot on signal
1x = Normal display
Figure 14-4. LCD Control Register (LCDCON)
14-4
.0
S3C9484/C9488/F9488
LCD CONTROLLER/DRIVER
LCD VOLTAGE CONTROL REGISTER (LCDVOL)
The LCD Voltage control register LCDVOL is mapped to RAM addresses D1H.
LCDVOL is used to control the LCD contrast up to 16 step contrast level.
— LCD contrast control enable/disable bit (LCDVOL.7)
— LCD contrast segment output selection bits (LCDVOL.0 -LCDVOL.3)
LCD Voltage Control Register (LCDVOL)
D1H, R/W, Reset: 0FH
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Not used
LCD contrast Control
enable/disable bit:
0 = Disable LCD
contrast control
1 = Enable LCD
contrast control
Segment/Port output selection bits:
0000 = 1/16 step (The dimmest level)
0001 = 2/16 step
0010 = 3/16 step
0011 = 4/16 step
----1110 = 15/16 step
1111 = 16/16 step
Figure 14-5. LCD Drive Voltage Control Register (LCDVOL)
14-5
LCD CONTROLLER/DRIVER
NOTE:
S3C9484/C9488/F9488
When LCDVOL.7 is logic one, you can control LCD contrast by writing data
to LCDVOL.3-.0
Figure 14-6. Internal Voltage Dividing Resistor Connection (1/4 Bias, Display On)
14-6
S3C9484/C9488/F9488
NOTE:
LCD CONTROLLER/DRIVER
When LCDVOL.7 is logic one, you can control LCD contrast by writing data
to LCDVOL.3-.0
Figure 14-7. Internal Voltage Dividing Resistor Connection (1/3 Bias, Display On)
14-7
LCD CONTROLLER/DRIVER
S3C9484/C9488/F9488
LCD DRIVE VOLTAGE
The LCD display is turned on only when the voltage difference between the common and segment signals is greater
than VLCD. The LCD display is turned off when the difference between the common and segment signal voltages is
less than VLCD. The turn-on voltage, + VLCD or - VLCD, is generated only when both signals are the selected signals
of the bias. Table 14-1 shows LCD drive voltages level for static mode, 1/3 bias, 1/4 bias.
Table 14-1. LCD Drive Bias Voltages Level Values
LCD Power Supply
Static Mode
1/3 Bias
1/4 Bias
VLC4
VLCD
–
VLCD
VLC3
–
VLCD
3/4 VLCD
VLC2
–
2/3 VLCD
2/4 VLCD
VLC1
–
1/3 VLCD
1/4 VLCD
VSS
0V
0V
0V
NOTE:
14-8
The LCD panel display may be deteriorated if a DC voltage is applied that lies between the common and segment
signal voltage. Therefore, always drive the LCD panel with AC voltage.
S3C9484/C9488/F9488
LCD CONTROLLER/DRIVER
LCD SEG/COM SIGNALS
The 19 LCD segment signal pins are connected to corresponding display RAM locations at 00H-12H. Bits 0-7 of the
display RAM are synchronized with the common signal output pins COM0, . . . . , and COM7.
When the bit value of a display RAM location is "1", a select signal is sent to the corresponding segment pin. When
the display bit is "0", a 'no-select' signal is sent to the corresponding segment pin. Each bias has select and noselect signals.
Select
LCD
Clock
Non-Select
1 Frame
COM
VLC4
Vss
SEG
VLC4
Vss
VLC4
Vss
-VLC4
COM-SEG
Figure 14-8. Select/No-Select Bias Signals in Static Display Mode
Select
Non-Select
1 Frame
LCD
Clock
COM
VLC3
VLC2
VLC1
VSS
SEG
VLC3
VLC2
VLC1
VSS
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
COM-SEG
Figure 14-9. Select/No-Select Bias Signals in 1/4 Duty, 1/3 Bias Display Mode
14-9
LCD CONTROLLER/DRIVER
S3C9484/C9488/F9488
Select
Non-Select
1 Frame
LCD
Clock
COM
VLC4
VLC3
VLC2
VLC1
VSS
SEG
VLC4
VLC3
VLC2
VLC1
VSS
VLC4
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
-VLC4
COM-SEG
Figure 14-10. Select/No-Select Bias Signals in 1/8 Duty, 1/4 Bias Display Mode
14-10
S3C9484/C9488/F9488
LCD CONTROLLER/DRIVER
0 1 2 3 4 5 6 7 0 12 3 4 5 6 7
1 Frame
SEG0.0 x C0
COM1
-SEG0
VLC4
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
-VLC4
COM1
-SEG1
VLC4
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
-VLC4
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM0
SEG1
COM0
-SEG1
VLC4
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
-VLC4
SEG0.7 x C7
0 1 1 1 0 1 0 0
COM0
-SEG0
VLC4
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
-VLC4
SEG0.6 x C6
.0 .1 .2 .3 .4 .5 .6 .7
SEG1
VLC4
VLC3
VLC2
VLC1
VSS
Data Register page1,
Address 01H
LD 01H, #2Eh
VLC4
VLC3
VLC2
VLC1
VSS
SEG0
SEG0
1 0 1 1 1 0 1 0
COM7
.0 .1 .2 .3 .4 .5 .6 .7
COM3
SEG0.3 x C3
SEG0.5 x C5
COM2
VLC4
VLC3
VLC2
VLC1
VSS
SEG0.2 x C2
VLC4
VLC3
VLC2
VLC1
VSS
SEG0.4 x C4
COM1
SEG0.1 x C1
COM0
VLC4
VLC3
VLC2
VLC1
VSS
Data Register page 1,
Address 00H
LD 00H, #5Dh
FR
Figure 14-11. LCD Signal and Wave Forms Example in 1/8 Duty, 1/4 Bias Display Mode
14-11
LCD CONTROLLER/DRIVER
S3C9484/C9488/F9488
0 1 2 3 0 1 2 3
SEG1.0 x C0
SEG1
VLC3
VLC2
VLC1
VSS
COM0
-SEG0
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
COM0
-SEG1
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
COM1
-SEG0
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
COM1
-SEG1
VLC3
VLC2
VLC1
VSS
-VLC1
-VLC2
-VLC3
SEG0.3 x C3
COM3
COM2
COM1
COM0
SEG1.3 x C3
Figure 14-12. LCD Signals and Wave Forms Example in 1/4 Duty, 1/3 Bias Display Mode
14-12
Data Register page12, 0 1 1 0 x x x x
Address 03H
SEG3
LD 03H, #06h
VLC3
VLC2
VLC1
VSS
SEG2
SEG0
.0 .1 .2 .3 .4 .5 .6 .7
COM3
SEG0.1 x C1
Data Register page 1,
.0 .1 .2 .3 .4 .5 .6 .7
Address 02H
1 1 0 0 x x x x
LD 02H, #03h
VLC3
VLC2
VLC1
VSS
SEG1.2 x C2
COM2
SEG1.1 x C1
VLC3
VLC2
VLC1
VSS
SEG0.2 x C2
COM1
SEG0.0 x C0
COM0
VLC3
VLC2
VLC1
VSS
Data Register page 1, .0 .1 .2 .3 .4 .5 .6 .7
Address 00H
0 1 1 1 x x x x
LD 00H, #0Eh
SEG0
.0 .1 .2 .3 .4 .5 .6 .7
Data Register page 1, 1 1 0 0 x x x x
Address 01H
SEG1
LD 01H, #03h
FR
1 Frame
S3C9484/C9488/F9488
LCD CONTROLLER/DRIVER
+ PROGRAMMING TIP – Using The LCD Display
.INCLUDE
LCD_DATA0_P1
.ORG
.ORG
"C:\SKSTUDIO\INCLUDE\REG\S3C9488.REG"
.EQU
003CH
DB
DB
DB
DB
00H
0FFH
0FFH
01100000B
00000011B
;Smart Option setting
100H
RESET:
DI
LD
WDTCON,#10101010B
LD
BTCON,#0001011B
LD
CLKCON,#00011000B
LD
SP,#0C0H
LD
SYM,#00H
LD
OSCCON,#00000000B
LD
LCDCON,#10001000B
;1/8 duty,1/4 bias,fw/128
LD
LCDVOL,#10001111B
;lcd contrast enable,16/16 step
LD
P0CONH,#0FFH
;COM4-COM7
LD
P0CONL,#11101010B
LD
P1CONH,#0FFH
;COM0-COM3
LD
P1PUR,#00H
LD
P2CONH,#0FFH
;SEG7-SEG10
LD
P2CONL,#0FFH
;SEG3-SEG6
LD
P3CONH,#10101011B
;SEG18
LD
P3CONL,#11111111B
;SEG15-SEG17
LD
P4CONH,#00111111B
;SEG12-SEG14
LD
P4CONL,#0FFH
;SEG0-SEG2,SEG11
LD
WTCON,#02H
;Watch Timer enable
;================================================================================
14-13
LCD CONTROLLER/DRIVER
S3C9484/C9488/F9488
MAIN
LOOP
LD
LD
LD
LD
SYM,#01H
R0,#LCD_DATA0_P1
R2,#0
R3,#0
;SELECT PAGE1
;LOAD LCD DISPLAY DATA RAM0
LDC
LD
INC
INC
CP
JP
LD
JP
R1,#LCD_DATA[RR2]
@R0,R1
R0
R3
R3,#13H
C,LOOP
SYM,#00H
$
.DB
.DB
00H,48H,34H,0D0H,22H,11H,89H,0E2H,35H,0FFH
77H,33H,67H,99H,46H,0F1H,4H,88H,54H
;SELECT PAGE0
LCD_DATA
;================================================================================
.END
14-14
S3C9484/C9488/F9488
15
A/D CONVERTER
10-BIT ANALOG-TO-DIGITAL CONVERTER
OVERVIEW
The 10-bit A/D converter (ADC) module uses successive approximation logic to convert analog levels entering at one
of the nine input channels to equivalent 10-bit digital values. The analog input level must lie between the AVREF and
VSS values. The A/D converter has the following components:
— Analog comparator with successive approximation logic
— D/A converter logic (resistor string type)
— ADC control register (ADCON)
— Nine multiplexed analog data input pins (AD0 – AD8) , alternately digital data I/O port
— 10-bit A/D conversion data output register (ADDATAH/L)
— AVREF pins, AVSS is internally connected to VSS
FUNCTION DESCRIPTION
To initiate an analog-to-digital conversion procedure, at the first you must set port control register(P0CONH/
P0CONL/P1CONL) for AD analog input. And you write the channel selection data in the A/D converter control
register ADCON.4-.6 to select one of the eight analog input pins (AD0-8) and set the conversion start bit, ADCON.0.
The read-write ADCON register is located at address FCH. The unused pin can be used for normal I/O.
During a normal conversion, ADC logic initially set the successive approximation register to 200H (the approximate
half-way point of an 10-bit register). This register is then updated automatically during each conversion step. The
successive approximation block performs 10-bit conversions for one input channel at a time. You can dynamically
select different channels by manipulating the channel selection bit value (ADCON.7 - 4) in the ADCON register. To
start the A/D conversion, you should set the enable bit, ADCON.0. When a conversion is completed, the end-ofconversion (EOC) bit is automatically set to 1 and the result is dumped into the ADDATAH/L register where it can be
read. The A/D converter then enters an idle state. Remember to read the contents of ADDATAH/L before another
conversion starts. Otherwise, the previous result will be overwritten by the next conversion result.
NOTE
Because the A/D converter does not use sample-and-hold circuitry, it is very important that fluctuation in
the analog level at the AD0-AD8 input pins during a conversion procedure be kept to an absolute minimum.
Any change in the input level, perhaps due to noise, will invalidate the result. If the chip enters to STOP or
IDLE mode in conversion process, there will be a leakage current path in A/D block. You must use
STOP or IDLE mode after ADC operation is finished.
15-1
A/D CONVERTER
S3C9484/C9488/F9488
CONVERSION TIMING
The A/D conversion process requires 4 steps (4 clock edges) to convert each bit and 10 clocks to set-up A/D
conversion. Therefore, total of 50 clocks are required to complete an 10-bit conversion: When Fxx/8 is selected for
conversion clock with an 8 MHz fxx clock frequency, one clock cycle is 1 us. Each bit conversion requires 4 clocks,
the conversion rate is calculated as follows:
4 clocks/bit × 10 bits + set-up time = 50 clocks, 50 clock × 1us = 50 us at 1 MHz
A/D CONVERTER CONTROL REGISTER (ADCON)
The A/D converter control register, ADCON, is located at address FCH. It has three functions:
— Analog input pin selection (bits 4, 5, 6, and 7)
— A/D conversion End-of-conversion (EOC) status (bit 3)
— A/D conversion speed selection (bits 1,2)
— A/D operation start (bit 0)
After a reset, the start bit is turned off. You can select only one analog input channel at a time. Other analog input
pins (ADC0–ADC8) can be selected dynamically by manipulating the ADCON.4–6 bits. And the pins not used for
analog input can be used for normal I/O function.
A/D Converter Control Register (ADCON)
FCH, R/W
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
A/D input pin selection bits:
A/D conversion start bit:
0000 = ADC0
0 = Disable operation
End-of-conversion(ECO) status bit:
0001 = ADC1
1 = Start operation (Auto-clear)
0 = A/D conversion is in progress
0010 = ADC2
1 = A/D conversion complete
0011 = ADC3
0100 = ADC4
Clock source selection bits:
0101 = ADC5
00 = fxx/16 (fosc = 8MHz)
0110 = ADC6
01 = fxx/ 8 (fosc = 8MHz)
0111 = ADC7
10 = fxx/ 4 (fosc = 8MHz)
1000 = ADC8
11 = fxx (fosc = 4MHz)
Other values = Connected with GND internally
Maximum ADC clock input = 4MHz
Figure 15-1. A/D Converter Control Register (ADCON)
15-2
S3C9484/C9488/F9488
A/D CONVERTER
Conversion Data Register High Byte (ADDATAH)
FAH, Ready only
MSB
.7
.6
.5
.4
.3
.2
.1
.0
LSB
Conversion Data Register Low Byte (ADDATAL)
FBH, Ready only
MSB
x
x
x
x
x
x
.1
.0
LSB
Figure 15-2. A/D Converter Data Register (ADDATAH/L)
INTERNAL REFERENCE VOLTAGE LEVELS
In the ADC function block, the analog input voltage level is compared to the reference voltage. The analog input level
must remain within the range VSS to AVREF (usually, AVREF = VDD).
Different reference voltage levels are generated internally along the resistor tree during the analog conversion process
for each conversion step. The reference voltage level for the first conversion bit is always 1/2 AVREF.
15-3
A/D CONVERTER
S3C9484/C9488/F9488
BLOCK DIAGRAM
- A/D Converter Control Register
ADCON (FCH)
ADCON.0 (ADC Start)
ADCON.7-.4
ADC0/P1.3
ADC1/P1.2
ADC2/P1.1
ADC7/P0.4
ADC8/P0.3
Control
Circuit
M
U
L
T
I
P
L
E
X
E
R
Clock
Selector
ADCON.3
(EOC Flag)
ADCON.2-.1
Successive
Approximation
Circuit
+
Analog
Comparator
VDD
D/A Converter
VSS
Conversion Result
ADDATAH
(FAH)
ADDATAL
(FBH)
To data bus
Figure 15-3. A/D Converter Functional Block Diagram
15-4
S3C9484/C9488/F9488
A/D CONVERTER
INTERNAL A/D CONVERSION PROCEDURE
1.
Analog input must remain between the voltage range of VSS and AVREF.
2.
Configure P0.3–P0.7 and P1.0–P1.3 for analog input before A/D conversions. To do this, you have to load the
appropriate value to the P0CONH, P0CONL and P1CONL (for ADC0–ADC8) registers.
3.
Before the conversion operation starts, you must first select one of the eight input pins (ADC0–ADC8) by writing
the appropriate value to the ADCON register.
4.
When conversion has been completed, (50 clocks have elapsed), the EOC, ADCON.3 flag is set to "1", so that
a check can be made to verify that the conversion was successful.
5.
The converted digital value is loaded to the output register, ADDATAH (8-bit) and ADDATAL (2-bit), then the ADC
module enters an idle state.
6.
The digital conversion result can now be read from the ADDATAH and ADDATAL register.
VDD
Reference
Voltage
Input
AVREF
10pF
C 103
VDD
Analog
Input Pin
ADC0-ADC8
C 101
S3C9484/C9488/
F9488
AVSS
NOTE:
The symbol 'R' signifies an offset resistor with a value of from 50 to 100.
If this resistor is omitted, the absolute accuracy will be maximum of 3 LSBs.
Figure 15-4 Recommended A/D Converter Circuit for Highest Absolute Accuracy
15-5
A/D CONVERTER
S3C9484/C9488/F9488
NOTES
15-6
S3C9484/C9488/F9488
16
WATCHDOG TIMER
WATCHDOG TIMER
OVERVIEW
WHATCHDOG TIMER
You can use the watchdog timer :
— Watchdog timer provides an automatic reset mechanism with counter clock source of internal RC ring oscillation
or basic timer overflow signal.
— Watchdog timer can run in unintentional STOP/IDLE mode with internal RC ring oscillator. This prevents MCU
from remaining in the abnormal STOP/IDLE mode.
The functional components of the watchdog timer block are:
— Internal RC oscillation or basic timer overflow signal.
— Smart Option 3FH.1 selects counter clock source, 16bit watchdog timer overflow condition (bit15 OVF with
internal ring oscillator or bit3 OVF with basic timer overflow). Also, on STOP and IDLE mode with internal RC
ring oscillator, watchdog timer counter is not cleared by smart option.
— Watchdog timer control register, WDTCON (E5H, read/write)
— 16bit Watchdog Timer Counter
WATCHDOG TIMER CONTROL REGISTER (WDTCON)
Watchdog Timer Control Register (WDTCON)
E5H, R/W, Reset: 00H
MSB
.7
.6
.5
.4
Watchdog timer enable bits:
1010B = Disable watchdog function
Other value = Enable watchdogfunction
.3
.2
.1
.0
LSB
Watchdog timer counter clear bits:
1010B = Clear watchdog timer counter
Other value = don't care
Figure 16-1. Watchdog Timer Control Register (WDTCON)
16-1
WATCHDOG TIMER
S3C9484/C9488/F9488
WATCHDOG TIMER FUNCTION DESCRIPTION
Watchdog Timer Function
You can program the watchdog timer overflow signal (WDTOVF) to generate a reset by setting WDTCON.7-.4 to any
value other than "1010B". (The "1010B" value disables the watchdog function.) A reset clears WDTCON to "00H",
automatically enabling the watchdog timer function.
The MCU is reset whenever a watchdog timer counter overflow occurs, During normal operation, the application
program must prevent from the overflow, To do this, the WDTCNT value must be cleared (by writing a “1010¡± to
WDTCON.0-.3) at regular intervals.
If a malfunction occurs due to noise or some other error conditions, the watchdog counter clear operation will not be
executed by chip malfunction. So, before long, a watchdog timer overflow reset will occur. After this reset, chip will
carry out normal operation again. In other words, during the normal operation, the watchdog timer overflow (bit 3
overflow or bit 15 overflow of the 16-bit watchdog timer counter, WDTCNT) does not occur by a 16bit Watchdog timer
counter clear operation.
Watchdog Timer Counter Clock Sources Selection
You can select counter clock source between basic timer overflow signal and internal RC ring oscillator.
If you use basic timer overflow clock source, WDT overflow will occur at the time when counter bit 3 is set. If you use
internal RC ring oscillator clock source, WDT overflow will occur at the time when counter bit 15 is set.
Watchdog Timer in STOP/IDLE mode
1.
If the basic timer overflow signal is selected for the WDT counter clock source, WDT will be disabled
automatically by hardware. So system reset can not occur by WDT. WDT counter is cleared automatically in
STOP/IDLE mode. In this case, current consumption is very small.
2.
If internal RC ring oscillator is selected for the WDT counter clock source, WDT can be enabled in unintentional
STOP/IDLE mode. So system reset can occur by WDT. WDT counter is not cleared in STOP/IDLE mode. So,
when abnormal STOP or IDLE mode occurs by noise, MCU can be returned to normal operation by WDT
overflow reset. But, at this case, STOP/IDLE mode current consumption becomes larger. If noise problem (like
chip entering to unintentional STOP/IDLE mode) is more important, you had better use internal RC ring
oscillator.
Before running system, you must select Smart Option (3FH.1) for WDT counter source.
If you select internal RC oscillator, normally, you must set Watchdog Timer to be disable before entering to STOP
mode. Because, If WDT is not disabled, reset operation will occur by WDT counter overflow.
If you want to use WDT in STOP/IDLE mode for noise problem, current may drain too much by internal RC
oscillation. So, if noise issue is not important, you had better select basic timer overflow signal for WDT counter
clock source.
Watchdog Timer Counter Overflow Time for Reset
1. If the basic timer overflow signal is selected for the WDT counter clock source and main clock, Fxx, is 8MHz,
Basic Timer Clock
Fxx/128
Fxx/1024
Fxx/4096
Time for WDT overflow
32.76msec
262msec
1.05sec
2. If internal RC ring oscillator is selected for the WDT counter clock source,
Timer for WDT overflow = (1/3.47)µ sec X 216 = 18.89msec
16-2
S3C9484/C9488/F9488
WATCHDOG TIMER
Smart
Option
3FH.1
WDTCON
.7-.4
RC
3.47MHz
Ring OSC
Basic Timer
OVF
Bit 15
OVF
M
U
X
M
U
X
16bit Watchdog Timer
Up-Counter
RESET
Bit 3
OVF
Smart
Option
3FH.1
WDTCON
.7-.4
WDTCON
.3 -.0
RESET
MUX
MUX
STOP
IDLE
Figure 16-2. Watchdog Timer Block Diagram
16-3
WATCHDOG TIMER
S3C9484/C9488/F9488
NOTES
16-4
S3C9484/C9488/F9488
17
VOLTAGE LEVEL DETECTOR
VOLTAGE LEVEL DETECTOR
OVERVIEW
The S3C9484/C9488/F9488 micro-controller has a built-in VLD(Voltage Level Detector) circuit which allows detection
of power voltage drop through software. Turning the VLD operation on and off can be controlled by software. Because
the IC consumes a large amount of current during VLD operation. It is recommended that the VLD operation should
be kept OFF unless it is necessary. Also the VLD criteria voltage can be set by the software. The criteria voltage can
be set by matching to one of the 3 kinds of voltage 2.4V, 2.7V, 3.3V or 3.9V (VDD reference voltage).
The VLD block works only when VLDCON.0 is set. If VDD level is lower than the reference voltage selected with
VLDCON.5-.1, VLDCON.6 will be set. If VDD level is higher, VLDCON.6 will be cleared. Please do not operate the
VLD block for minimize power current consumption.
Voltage Level Detector Control Register (VLDCON)
D8H, R/W,Bit6 read-only, Reset value:2CH
MSB
.7
.6
Not used
.5
.4
.3
.2
.1
.0
LSB
Reference voltage selection bit
10110 = 2.4 V
10011 = 2.7 V
01110 = 3.3 V
01011 = 3.9 V
VLD operation enable bit
0 = Operation off
1 = Operation on
Voltage level set bit (read only)
0 = VDD is higher than reference voltage
1 = VDD is lower than reference voltage
Figure 17-1. VLD Control Register (VLDCON)
17-1
VOLTAGE LEVEL DETECTOR
S3C9484/C9488/F9 488
V DD Pin
Voltage
Level
Detector
VLDCON.6
VLD out
VLDCON.0
Voltage
Level
Setting
VLD run
VLDCON.5~
VLDCON.1
Set the level
Figure 17-2. Block Diagram for Voltage Level Detect
17-2
S3C9484/C9488/F9488
VOLTAGE LEVEL DETECTOR
VOLTAGE LEVEL DETECTOR CONTROL REGISTER (VLDCON)
The bit 0 of VLDCON controls to run or disable the operation of Voltage level detector. Basically this VVLD is set as
2.4 V by system reset and it can be changed in 4 kinds voltages by selecting Voltage Level Detector Control
register(VLDCON). When you write 5 bit data value to VLDCON, an established resistor string is selected and the
VVLD is fixed in accordance with this resistor. Table 17-1 shows specific VVLD of 3 levels.
Voltage Level Detector Control Register (VLDCON)
D8H, R/W,Bit6 read-only, Reset value:2CH
.7
.6
.5
.4
.3
.2
.1
.0
LSB
VDD
VIN
VREF
+
Comparator
VDD
VREF
BGR
Figure 17-2. Voltage Level Detect Circuit and Control Register
Table 17-1. VLDCON Value and Detection Level
NOTE:
VLDCON .5-.1
VVLD
10110
2.4 V
10011
2.7 V
01110
3.3 V
01011
3.9 V
VLDCON reset value is 2CH .
17-3
VOLTAGE LEVEL DETECTOR
S3C9484/C9488/F9 488
VOLTAGE(VDD) LEVEL DETECTION SEQUENCE - VLD USAGE
STEP 0: Don’t make VLD on in normal conditions for small current consumption.
STEP 1: For initializing analog comparator, write #3Fh to VLDCON. (Comparator initialization, VLD enable)
STEP 2: Write value to reference voltage setting bits in VLDCON. (Voltage setting, VLD enable)
STEP 3: Wait 10~20usec for comparator operation time. (Wait compare time)
STEP 4: Check result by loading voltage level set bit in VLDCON. (Check result)
STEP 5: For another measurement, repeat above steps.
PROGRAMING TIP
LD
VLDCON,#3FH
; Comparator initialization,VLD enable (STEP 1)
LD
VLDCON,#00011101B
; 3.3V detection voltage setting, VLD enable (STEP 2)
NOP
NOP
NOP
•
•
•
LD
TM
JP
;
R0, VLDCON
R0, #01000000B
NZ, LOW_VDD
Wait 10~20usec (STEP 3)
; Load VLDCON to R0 (STEP 4)
; Check bit6 of R0. If bit6 is “H”, VDD is lower than 3.3V.
; If not zero(bit 6 is “H”), jump to “LOW_VDD” routine.
Table 17-2. Characteristics of Voltage Level Detect Circuit (TA = 25 ° C)
Parameter
Symbol
Operating Voltage
VDDVLD
Detection Voltage
VVLD
Current consumption
IVLD
Conditions
Min
Typ
Max
Unit
1.5
–
5.5
V
VLDCON.5–.1 = 10110b
2.0
2.4
2.8
VLDCON.5–.1 = 10011b
2.3
2.7
3.1
VLDCON.5–.1 = 01110b
2.9
3.3
3.7
VLDCON.5–.1 = 01011b
3.5
3.9
4.3
–
65
100
45
80
VLD on VDD = 5.5 V
VDD = 3.0 V
17-4
uA
S3C9484/C9488/F9488
VOLTAGE LEVEL DETECTOR
17-5
S3C9484/C9488/F9488
18
LOW VOLTAGE RESET
LOW VOLTAGE RESET
OVERVIEW
The S3C9484/C9488/F9488 can be reset in four ways:
— by external power-on-reset
— by the external reset input pin pulled low
— by the digital watchdog timing out
— by the Low Voltage reset circuit (LVR)
During an external power-on reset, the voltage VDD is High level and the RESETB pin is forced Low level. The
RESETB signal is input through a Schmitt trigger circuit where it is then synchronized with the CPU clock. This
brings the S3C9484/C9488/F9488 into a known operating status. To ensure correct start-up, the user should take
that reset signal is not released before the VDD level is sufficient to allow MCU operation at the chosen frequency.
The RESETB pin must be held to Low level for a minimum time interval after the power supply comes within
tolerance in order to allow time for internal CPU clock oscillation to stabilize. The minimum required oscillation
stabilization time for a reset is approximately 8.19 ms (≅216/fosc, fosc= 8MHz).
When a reset occurs during normal operation (with both VDD and RESETB at High level), the signal at the RESETB
pin is forced Low and the reset operation starts. All system and peripheral control registers are then set to their
default hardware reset values (see Table 8-1).
The MCU provides a watchdog timer function in order to ensure graceful recovery from software malfunction. If
watchdog timer is not refreshed before an end-of-counter condition (overflow) is reached, the internal reset will be
activated.
The S3C9484/C9488/F9488 has a built-in low voltage reset circuit that allows detection of power voltage drop of
external VDD input level to prevent a MCU from malfunctioning in an unstable MCU power level. This voltage detector
works for the reset operation of MCU. This Low Voltage reset includes an analog comparator and Vref circuit. The
value of a detection voltage is set internally by hardware. The on-chip Low Voltage Reset, features static reset when
supply voltage is below a reference voltage value (you did select at smart option 3FH). Thanks to this feature,
external reset circuit can be removed while keeping the application safety. As long as the supply voltage is below the
reference value, there is an internal and static RESET. The MCU can start only when the supply voltage rises over
the reference voltage.
When you calculate power consumption, please remember that a static current of LVR circuit should be added a
CPU operating current in any operating modes such as Stop, Idle, and normal RUN mode.
18-1
LOW VOLTAGE RESET
S3C9484/C9488/F9488
Smart Option 3FH.0
Watchdog RESET
RESET
N.F
Internal System
RESETB
Longger than 1us
VDD
Smart Option 3EH.7
V IN
Comparator
When the VDD level
is lower than 2.7V
+
VREF
N.F
-
Longger than 1us
VDD
Smart Option 3EH.7
VREF
BGR
NOTES:
1. The target of voltage detection level is that you did select at smart option 3EH.
2. BGR is Band Gap voltage Reference
Figure 18-1. Low Voltage Reset Circuit
NOTE
To program the duration of the oscillation stabilization interval, you make the appropriate settings to the
basic timer control register, BTCON, before entering Stop mode. Also, if you do not want to use the
watchdog function (which causes a system reset if a watchdog timer counter overflow occurs), you can
disable it by writing '1010B' to the upper nibble of WDTCON.
18-2
S3C9484/C9488/F9488
19
ELECTRICAL DATA
ELECTRICAL DATA
OVERVIEW
In this chapter, S3C9484/C9488/F9488 electrical characteristics are presented in tables and graphs.
The information is arranged in the following order:
— Absolute maximum ratings
— Input/output capacitance
— D.C. electrical characteristics
— A.C. electrical characteristics
— Oscillation characteristics
— Oscillation stabilization time
— Data retention supply voltage in stop mode
— A/D converter electrical characteristics
19-1
ELECTRICAL DATA
S3C9484/C9488/F9488
Table 19-1. Absolute Maximum Ratings
(TA = 25 °C)
Parameter
Symbol
Supply voltage
Conditions
Rating
VDD
– 0.3 to +6.5
Input voltage
VI
– 0.3 to VDD + 0.3
Output voltage
VO
– 0.3 to VDD + 0.3
Output current high
IOH
Output current low
IOL
Operating temperature
Storage temperature
One I/O pin active
– 18
All I/O pins active
– 60
One I/O pin active
+30
Total pin current for port
+100
Unit
V
mA
TA
– 25 to + 85
TSTG
– 65 to + 150
°C
Table 19-2. D.C. Electrical Characteristics
(TA = -25 °C to + 85 °C, VDD = 2.2 V to 5.5 V)
Parameter
Operating voltage
Input high voltage
Input low voltage
19-2
Symbol
VDD
Conditions
Min
Typ
Max
Unit
fCPU = 8 MHz
2.7
–
5.5
V
fCPU = 4 MHz
2.2
5.5
VDD
VIH1
All input pins except VIH2
0.8 VDD
VIH2
XIN, XTIN
VDD-0.5
VIL1
All input pins except VIL2
VIL2
XIN, XTIN
–
0.2 VDD
0.5
S3C9484/C9488/F9488
ELECTRICAL DATA
Table 19-2. D.C. Electrical Characteristics (Continued)
(TA = -25 °C to + 85 °C, VDD = 2.2 V to 5.5 V)
Parameter
Output high voltage
Output low voltage
Input high leakage current
Input low leakage current
Symbol
Conditions
Min
Typ
Max
Unit
V
VOH1
VDD = 2.4 V; IOH = -4 mA
P1.0-P1.1 and P3.4-P3.6
VDD - 0.7
VDD - 0.3
–
VOH2
VDD = 5 V; IOH = -4 mA
Port 2
VDD - 1.0
–
–
VOH3
VDD = 5 V; IOH = -1 mA
Normal output pins
VDD - 1.0
–
–
VOL1
VDD = 2.4 V; IOL = 12 mA
P1.0-P1.1 and P3.4-P3.6
0.3
0.5
VOL2
VDD = 5 V; IOL = 15 mA
Port 2
0.4
2.0
VOL3
VDD = 5 V; IOL = 4 mA
Normal output pins
–
0.4
2.0
ILIH1
VIN = VDD
All input pins except ILIH2
–
–
3
ILIH2
VIN = VDD, XIN, XTIN
ILIL1
VIN = 0 V
µA
20
–
–
-3
All input pins except ILIL2
ILIL2
VIN = 0 V, XIN, XTIN
-20
Output high leakage
current
ILOH
VOUT = VDD
All I/O pins and Output pins
–
–
3
Output low leakage
current
ILOL
VOUT = 0 V
–
–
-3
Oscillator feed back
resistors
ROSC1
800
1000
1200
All I/O pins and Output pins
VDD = 5.0 V, TA = 25 °C
kΩ
XIN = VDD, XOUT = 0 V
Pull-up resistor
RL1
VIN = 0 V; VDD = 5 V ±10 %
Port 0,1,2,3,4 TA = 25°C
25
50
100
COM output
voltage deviation
VDC
VDD = VLC4 = 5 V
–
± 45
± 90
–
± 45
± 90
mV
(V LC4-COMi)
IO = ± 15 p-µA (i = 0-7)
SEG output
voltage deviation
VDS
VDD = VLC4 = 5 V
(V LC4-SEGi)
IO = ± 15 p-µA (i = 0-18)
19-3
ELECTRICAL DATA
S3C9484/C9488/F9488
Table 19-2. D.C. Electrical Characteristics (Concluded)
(TA = -25 °C to + 85 °C, VDD = 2.2V to 5.5 V)
Parameter
Symbo
l
Conditions
Min
Typ
Max
Unit
LCD Voltage Dividing
Resister
RLCD
_
40
75
100
kΩ
VLC3 OUTPUT VOLTAGE
VLC3
0.75VDD-0.2
0.75V DD
0.75VDD+0.2
V
VLC2 OUTPUT VOLTAGE
VLC2
0.5VDD-0.2
0.5V DD
0.5VDD+0.2
V
VLC1 OUTPUT VOLTAGE
VLC1
0.25VDD-0.2
0.25V DD
0.25VDD+0.2
V
Supply current (1)
IDD1 (2) VDD = 5 V ± 10 %
8 MHz crystal oscillator
–
12
25
mA
4 MHz crystal oscillator
4
10
VDD = 3 V ± 10 %
3
8
4 MHz crystal oscillator
1
5
Idle mode: VDD = 5 V ± 10 %
8 MHz crystal oscillator
3
10
4 MHz crystal oscillator
1.5
4
Idle mode: VDD = 3 V± 10 %
8 MHz crystal oscillator
1.2
3
4 MHz crystal oscillator
1.0
2.0
Sub operating: main-osc stop
VDD = 3 V ± 10 %
40
80
7
14
Main stop mode : sub-osc stop
VDD = 5 V ± 10 %, TA = 25 °C
1
3
VDD = 3 V ± 10 %, TA = 25 °C
0.5
2
VDD=1.8V to 5.5V, 1/4 bias
LCD clock=0Hz, VLC4=VDD
8 MHz crystal oscillator
IDD2
IDD3
32768 Hz crystal oscillator
IDD4
Sub idle mode: main osc stop
VDD = 3 V ± 10 %
32768 Hz crystal oscillator
IDD5
NOTES:
1. Supply current does not include current drawn through internal pull-up resistors or external output current loads.
2. IDD1 and IDD2 include a power consumption of subsystem oscillator.
3. IDD3 and IDD4 are the current when the main system clock oscillation stop and the subsystem clock is used.
4.
And they does not include the LCD and Voltage booster and voltage level detector current.
IDD5 is the current when the main and subsystem clock oscillation stop.
5. Voltage booster’s operating voltage rage is 2.0V to 5.5V.
6. If you use LVR module, supply current increase. (refer to Table 19-12)
19-4
µA
S3C9484/C9488/F9488
ELECTRICAL DATA
Table 19-3. A.C. Electrical Characteristics
(TA = -25 °C to +85 °C, VDD = 2.2 V to 5.5 V)
Parameter
Symbol
Interrupt input
high, low width
(P3.3–P3.6)
tINTH,
RESET input low
width
tRSL
NOTE:
Conditions
Min
Typ
Max
Unit
P3.3–P3.6, VDD = 5 V
200
–
–
ns
VDD = 5 V
1.5
–
–
µS
tINTL
User must keep more large value then min value.
t INTL
t INTH
0.8 V DD
0.2 V DD
0.2 V DD
Figure 19-1. Input Timing for External Interrupts (P3.3–P3.6)
t RSL
RESET
0.2 V DD
Figure 19-2. Input Timing for RESET
19-5
ELECTRICAL DATA
S3C9484/C9488/F9488
Table 19-4. Input/Output Capacitance
(TA = -25 °C to +85 °C, VDD = 0 V )
Parameter
Symbol
Input
capacitance
CIN
Output
capacitance
COUT
I/O capacitance
Conditions
f = 1 MHz; unmeasured pins
are returned to VSS
Min
Typ
Max
Unit
–
–
10
pF
CIO
Table 19-5. Data Retention Supply Voltage in Stop Mode
(TA = -25 °C to + 85 °C)
Parameter
Symbol
Data retention
supply voltage
VDDDR
Data retention
supply current
IDDDR
Conditions
VDDDR = 2 V
Min
Typ
Max
Unit
2
–
5.5
V
–
–
3
µA
RESET
Occurs
~
~
Stop Mode
Data Retention Mode
~
~
VDD
Oscillation
Stabilization
Time
Normal
Operating Mode
VDDDR
Execution of
STOP Instrction
RESET
0.2 V DD
NOTE:
tWAIT
t WAIT is the same as 4096 x 16 x 1/fOSC
Figure 19-3. Stop Mode Release Timing Initiated by RESET
19-6
S3C9484/C9488/F9488
ELECTRICAL DATA
Oscillation
Stabilization Time
~
~
Idle Mode
Stop Mode
Data Retention Mode
~
~
VDD
VDDDR
Normal
Operating Mode
Execution of
STOP Instruction
Interrupt
0.2 V DD
NOTE:
t WAIT
tWAIT is the same as 4096 x 16 x BT clock
Figure 19-4. Stop Mode(main) Release Timing Initiated by Interrupts
Oscillation
Stabilization Time
~
~
Idle Mode
Stop Mode
Data Retention Mode
~
~
VDD
VDDDR
Normal
Operating Mode
Execution of
STOP Instruction
Interrupt
0.2 VDD
t WAIT
NOTE:
tWAIT = 128 x 16 x (1/32768) = 62.5 ms
Figure 19-5. Stop Mode(sub) Release Timing Initiated by Interrupts
19-7
ELECTRICAL DATA
S3C9484/C9488/F9488
Table 19-6. A/D Converter Electrical Characteristics
(TA = - 25 °C to +85 °C, VDD = 2.2 V to 5.5 V, VSS = 0 V)
Parameter
Symbol
Conditions
Resolution
Total accuracy
Integral
Linearity Error
Differential Linearity Error
VDD
= 5.12 V
Min
Typ
Max
Unit
–
10
–
bit
–
–
±3
LSB
ILE
AVREF = 5.12V
–
–
±3
DLE
AVSS
–
–
±1
=0V
CPU clock = 8 MHz
Offset Error of Top
EOT
–
±1
±3
Offset Error of Bottom
EOB
–
±1
±3
Conversion time (1)
TCON
20
–
–
µS
Analog input voltage
VIAN
–
AVSS
–
AVREF
V
Analog input impedance
RAN
–
2
1000
–
MΩ
Analog reference voltage
AVREF
–
2.5
–
VDD
V
Analog ground
AVSS
–
VSS
–
VSS +0.3
Analog input current
IADIN
AVREF = VDD = 5V
–
–
10
µA
Analog block current (2)
IADC
AVREF = VDD = 5V
–
1
3
mA
AVREF = VDD = 3V
0.5
1.5
AVREF = VDD = 5V
100
500
10-bit resolution
50 x fxx/4, fxx = 8MHz
When Power Down mode
NOTES:
1. 'Conversion time' is the time required from the moment a conversion operation starts until it ends.
2. IADC is an operating current during A/D conversion.
19-8
nA
S3C9484/C9488/F9488
ELECTRICAL DATA
VDD
Reference
Voltage
Input
AVREF
10pF
C 103
VDD
Analog
Input Pin
ADC0-ADC8
C 101
S3C9484/C9488/
F9488
AVSS
NOTE:
The symbol 'R' signifies an offset resistor with a value of from 50 to 100.
If this resistor is omitted, the absolute accuracy will be maximum of 3 LSBs.
Figure 19-6. Recommended A/D Converter Circuit for Highest Absolute Accuracy
19-9
ELECTRICAL DATA
S3C9484/C9488/F9488
Table 19-7. Main Oscillator Frequency (fOSC1)
(TA = -25 °C to +85 °C, VDD = 2.2 V to 5.5 V)
Oscillator
Clock Circuit
Test Condition
Min
Typ
Max
Unit
Crystal oscillation Frequency
Crystal = 8MHz
C1 = 20 pF, C2 = 20 pF
1
–
8
MHz
Ceramic oscillation frequency
1
–
8
1
–
8
(1)
Crystal
XIN
XOUT
C1
Ceramic
XIN
C2
XOUT
C1
External clock
RC
(2)
C2
XIN
XOUT
XIN input frequency
XIN
XOUT
r = 35 KΩ, VDD = 5 V
2
R
NOTES:
1. We recommend crystal of TDK Korea as the most suitable oscillator of Samsung Microcontroller. If you want to know
detailed information of Crystal Oscillator Frequency with cap, please visit the web site(www.tdkkorea.co.kr).
2. The value of Crystal(10MHz) and Cap(20pF) is based on TDK Korea parts.
Table 19-8. Main Oscillator Clock Stabilization Time (tST1)
(TA = -25 °C to +85 °C, VDD = 2.2V to 5.5 V)
Oscillator
Crystal
Test Condition
VDD = 4.5 V to 5.5 V
Min
Typ
Max
Unit
–
–
10
ms
VDD = 2.2 V to 4.5 V
Ceramic
Stabilization occurs when VDD is equal to the minimum
oscillator voltage range.
External clock
XIN input high and low level width (t XH, tXL)
NOTE:
30
–
–
4
50
–
–
Oscillation stabilization time (tST1) is the time required for the CPU clock to return to its normal oscillation
frequency after a power-on occurs, or when Stop mode is ended by a RESET signal.
19-10
ns
S3C9484/C9488/F9488
ELECTRICAL DATA
1/f OSC1
tXL
tXH
XIN
VDD - 0.5 V
0.4 V
Figure 19-7. Clock Timing Measurement at XIN
Table 19-9. Sub Oscillator Frequency (fOSC2)
(TA = -25 °C + 85 °C, VDD = 2.2 V to 5.5 V)
Oscillator
Clock Circuit
Crystal
XT IN XT OUT
C1
Test Condition
Min
Typ
Max
Unit
32
32.768
35
kHz
C1 = 33 pF, C2 = 33 pF
C2
Table 19-10. Sub Oscillator(crystal) Stabilization Time (tST2)
(TA = 25 °C, VDD = 2.2 V to 5.5 V))
Test Condition
Min
Typ
Max
Unit
VDD = 4.5 V to 5.5 V
–
250
500
ms
VDD = 2.2 V to 4.5 V
–
–
10
s
NOTE:
Oscillation stabilization time (tST2) is the time required for the CPU return to its normal operation when Stop mode
is released by interrupts.
Table 19-11. LCD Contrast Controller Characteristics
( TA = – 25 °C to + 85 °C, VDD = 4.5 V to 5.5 V)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
–
–
–
–
4
Bits
Linearity
RLIN
–
–
–
± 1.0
LSB
Max Output Voltage
(LCDVOL=#8FH)
VLPP
VLC4=VDD=5V
4.9
–
VLC1
V
Resolution
19-11
ELECTRICAL DATA
19-12
S3C9484/C9488/F9488
S3C9484/C9488/F9488
ELECTRICAL DATA
Table 19-12. LVR (Low Voltage Reset) Circuit Characteristics
(TA = 25 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
LVR Voltage high
VLVRH
2.8
3.5
4.1
LVR Voltage low
VLVRL
2.4
3.1
3.7
TR
10
µS
Power supply voltage off time
TOFF
0.5
S
LVR circuit consumption
IDDPR
Power supply voltage rising
time
current
V
2.6
3.3
3.9
2.8
3.5
4.1
VDD = 5V +/- 10%
65
100
VDD = 3V
45
80
µA
NOTES:
1. 216/fx ( = 8.19ms at fx = 8 MHz)
2. Current consumed when Low Voltage reset circuit is provided internally.
tOFF
VDD
tR
t DDH
t DDL
Figure 19-8. LVR (Low Voltage Reset) Timing
19-13
ELECTRICAL DATA
S3C9484/C9488/F9488
f CPU
B
10 MHz
8 MHZ
A
4MHZ
1 MHz
1
2
3
2.2 2.7
4
5
6
5.5
Supply Voltage (V)
Minimum instruction clock = 1/4 x oscillator frequency
Figure 19-9. Operating Voltage Range
19-14
7
S3C9484/C9488/F9488
ELECTRICAL DATA
NOTES
19-15
S3C9484/C9488/F9488
20
MECHANICAL DATA
MECHANICAL DATA
OVERVIEW
The S3C9484/C9488/F9488 microcontroller is currently available in 32-SDIP, 32-SOP, 42-SDIP, 44-QFP package.
#17
0-15
0.2
5
32-SDIP-400
+0
.
- 0. 10
05
10.16
9.10 ± 0.20
#32
0.45 ± 0.10
(1.37)
1.00 ± 0.10
1.778
5.08 MAX
27.48 ± 0.20
3.30 ± 0.30
27.88 MAX
3.80 ± 0.20
#16
0.51 MIN
#1
NOTE: Dimensions are in millimeters.
Figure 20-1. 32-SDIP-400 Package Dimensions
20-1
MECHANICAL DATA
S3C9484/C9488/F9488
0-8
#17
0.25
20.30 MAX
19.90 ± 0.20
+ 0.10
- 0.05
0.90 ± 0.20
#16
2.00 ± 0.10
#1
2.20 MAX
32-SOP-450A
11.43
8.34 ± 0.20
12.00 ± 0.30
#32
(0.43)
0.40 ± 0.10
1.27
0.05 MIN
0.10 MAX
NOTE: Dimensions are in millimeters.
Figure 20-2. 32-SOP-450A Package Dimensions
20-2
S3C9484/C9488/F9488
MECHANICAL DATA
#22
0.2
5
42-SDIP-600
+0
.
- 0. 10
05
0-15
15.24
14.00 ± 0.20
#42
0.50 ± 0.10
(1.77)
1.00 ± 0.10
1.78
5.08 MAX
39.10 ± 0.20
3.30 ± 0.30
39.50 MAX
3.50 ± 0.20
#21
0.51 MIN
#1
NOTE: Dimensions are in millimeters.
Figure 20-3. 42-SDIP-600 Package Dimensions
20-3
MECHANICAL DATA
S3C9484/C9488/F9488
13.20 ± 0.30
0-8
10.00 ± 0.20
+ 0.10
10.00 ± 0.20
0.10 MAX
44-QFP-1010B
0.80 ± 0.20
13.20 ± 0.30
0.15 - 0.05
#44
#1
0.80
+ 0.10
0.35 - 0.05
0.15 MAX
0.05 MIN
(1.00)
2.05 ± 0.10
2.30 MAX
NOTE : Dimensions are in millimeters.
Figure 20-4. 44-QFP-1010 Package Dimensions
20-4
S3C9484/C9488/F9488
21
MTP
MTP
OVERVIEW
The S3F9488 single-chip CMOS microcontroller is the MTP (Multi Time Programmable) version of the
S3C9484/C9488 microcontroller. It has an on-chip Half Flash ROM instead of masked ROM. The Half Flash ROM is
accessed by serial data format. The Half Flash ROM can be rewritten up to 100 times.
The S3F9488 is fully compatible with the S3C9484/C9488, in function, in D.C. electrical characteristics, and in pin
configuration. Because of its simple programming requirements, the S3F9488 is ideal for use as an evaluation chip
for the S3C9484/C9488.
21-1
S3C9484/C9488/F9 488
33
32
31
30
29
28
27
26
25
24
23
P2.3/SEG6
P2.2/SEG5
P2.1/SEG4
P2.0/SEG3
P4.2/SEG2
P4.1/SEG1
P4.0/SEG0
P1.7/COM0
P1.6/COM1
P1.5/COM2
P1.4/COM3
MTP
34
35
36
37
38
39
40
41
42
43
44
22
21
20
19
18
17
16
15
14
13
12
S3F9488
(Top View)
(44-QFP)
P1.3/ADC0/
P1.2/ADC1
P1.1/ADC2/BUZ
P1.0/ADC3/TBPWM
P0.7/COM4/ADC4
P0.6/COM5/ADC5
P0.5/COM6/ADC6
AVREF
P0.4/COM7/ADC7
P0.3/ADC8
P0.2/RESETB
TEST/VPP
XTIN/P0.0
XT OUT /P0.1
XOUT
XIN
SEG18/INT0/P3.3
TAOUT/INT1/P3.4
SDAT/TACK/INT2/P3.5
SCLK/TACAP/INT3/P3.6
VDD
VSS
1
2
3
4
5
6
7
8
9
10
11
SEG7/P2.4
SEG8/P2.5
SEG9/P2.6
SEG10/P2.7
SEG11/P4.3
SEG12/P4.4
SEG13/P4.5
SEG14/P4.6
SEG15/P3.0
SEG16/RXD/P3.1
SEG17/TXD/P3.2
Figure 21-1. Pin Assignment Diagram (44-Pin Package)
21-2
S3C9484/C9488/F9488
MTP
SEG12/P4.4
SEG13/P4.5
SEG14/P4.6
SEG15/P3.0
SEG16/RXD/P3.1
SEG17/TXD/P3.2
SEG18/INT0/P3.3
TAOUT/INT1/P3.4
SDAT/TACK/INT2/P3.5
SCLK/TACAP/INT3/P3.6
VDD
V SS
XOUT
XIN
VPP/TEST
XTIN/P0.0
XTOUT/P0.1
RESETB/P0.2
AVREF
COM6/ADC6/P0.5
COM5/ADC5/P0.6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
S3F9488
(Top View)
42-SDIP
P4.3/SEG11
P2.7/SEG10
P2.6/SEG9
P2.5/SEG8
P2.4/SEG7
P2.3/SEG6
P2.2/SEG5
P2.1/SEG4
P2.0/SEG3
P4.2/SEG2
P4.1/SEG1
P4.0/SEG0
P1.7/COM0
P1.6/COM1
P1.5/COM2
P1.4/COM3
P1.3/ADC0
P1.2/ADC1
P1.1/ADC2/BUZ
P1.0/ADC3/TBPWM
P0.7/ADC4/COM4
Figure 21-2. Pin Assignment Diagram (42-Pin Package)
VSS
XOUT
XI N
VPP/TEST
XTI N/P0.0
XT OUT /P0.1
RESETB/P0.2
AVREF
ADC3/TBPWM/P1.0
BUZ/ADC2/P1.1
ADC1/P1.2
ADC0/P1.3
COM3/P1.4
COM2/P1.5
COM1/P1.6
COM0/P1.7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
S3F9488
(Top View)
32-SOP
32-SDIP
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VDD
P3.6/INT3/TACAP/SCLK
P3.5/INT2/TACK/SDAT
P3.4/INT1/TAOUT
P3.3/INT0/SEG18
P3.2/TXD/SEG17
P3.1/RXD/SEG16
P3.0/SEG15
P2.7/SEG10
P2.6/SEG9
P2.5/SEG8
P2.4/SEG7
P2.3/SEG6
P2.2/SEG5
P2.1/SEG4
P2.0/SEG3
Figure 21-3. Pin Assignment Diagram (32-Pin Package)
21-3
MTP
S3C9484/C9488/F9 488
Table 21-1. Descriptions of Pins Used to Read/Write the Flash ROM
Main Chip
Pin Name
During Programming
Pin Name
Pin No.
I/O
Function
P3.5
SDAT
3 (44-pin)
9 (42-pin)
30 (32-pin)
I/O
P3.6
SCLK
4 (44-pin)
10 (42-pin)
31 (32-pin)
I
Serial clock pin (input only pin)
TEST
VPP
9 (44-pin)
15 (42-pin)
4 (32-pin)
I
Power supply pin for flash ROM cell writing
(indicates that MTP enters into the writing
mode). When 12.5 V is applied, MTP is in
writing mode and when 5 V is applied,
MTP is in reading mode. (Option)
P0.2
RESETB
12 (44-pin)
18 (42-pin)
7 (32-pin)
I
VDD/VSS
VDD/VSS
5/6 (44-pin)
11/12 (42-pin)
32/1 (32-pin)
I
Serial data pin (output when reading, Input
when writing) Input and push-pull output port
can be assigned
Logic power supply pin.
Table 21-2. Comparison of S3F9488 and S3C9484/C9488 Features
Characteristic
S3F9488
S3C9484/C9488
Program Memory
8 Kbyte Flash ROM
4K/8K byte mask ROM
Operating Voltage (V DD)
2.2(2.7) V to 5.5 V
2.2(2.7) V to 5.5 V
MTP Programming Mode
VDD = 5 V, VPP = 12.5 V
Pin Configuration
EPROM Programmability
21-4
44QFP / 42SDIP / 32SDIP/ 32SOP
User Program multi time
Programmed at the factory
S3C9484/C9488/F9488
22
DEVELOPMENT TOOLS
DEVELOPMENT TOOLS
OVERVIEW
Samsung provides a powerful and easy-to-use development support system on a turnkey basis. The development
support system is composed of a host system, debugging tools, and supporting software. For a host system, any
standard computer that employs Win95/98/2000/XP as its operating system can be used. A sophisticated
debugging tool is provided both in hardware and software: the powerful in-circuit emulator, SMDS2+ or SK-1000, for
the S3C7-, S3C9-, and S3C8- microcontroller families. SMDS2+ is a newly improved version of SMDS2, and SK1000 is supported by a third party tool vendor. Samsung also offers supporting software that includes, debugger, an
assembler, and a program for setting options.
SHINE
Samsung Host Interface for In-Circuit Emulator, SHINE, is a multi-window based debugger for SMDS2+. SHINE
provides pull-down and pop-up menus, mouse support, function/hot keys, and context-sensitive hyper-linked help. It
has an advanced, multiple-windowed user interface that emphasizes ease of use. Each window can be easily sized,
moved, scrolled, highlighted, added, or removed.
SASM
The SASM takes a source file containing assembly language statements and translates them into a corresponding
source code, an object code and comments. The SASM supports macros and conditional assembly. It runs on the
MS-DOS operating system. As it produces the re-locatable object codes only, the user should link object files.
Object files can be linked with other object files and loaded into memory. SASM requires a source file and an
auxiliary register file (device_name.reg) with device specific information.
SAMA ASSEMBLER
The Samsung Arrangeable Microcontroller (SAM) Assembler, SAMA, is a universal assembler, and generating an
object code in the standard hexadecimal format. Assembled program codes include the object code used for ROM
data and required In-circuit emulators program control data. To assemble programs, SAMA requires a source file and
an auxiliary definition (device_name.def) file with device specific information.
HEX2ROM
HEX2ROM file generates a ROM code from a HEX file which is produced by the assembler. A ROM code is needed
to fabricate a microcontroller which has a mask ROM. When generating a ROM code (.OBJ file) by HEX2ROM, the
value "FF" is automatically filled into the unused ROM area, up to the maximum ROM size of the target device.
22-1
DEVELOPMENT TOOLS
S3C9484/C9488/F9488
TARGET BOARDS
Target boards are available for all the S3C9-series microcontrollers. All the required target system cables and
adapters are included with the device-specific target board. TB9484/88 is a specific target board for the
S3C9484/C9488/F9488 development
IBM-PC AT or Compatible
RS-232C
Emulator (SMDS2+ or SK-1000)
Target
Application
System
EPROM Writer Unit
RAM Break/Display Unit
Bus
Probe
Adapter
Trace/Timer Unit
SAM9 Base Unit
Power Supply Unit
POD
TB9484/88
Target
Board
EVA
Chip
Figure 22-1. SMDS+ or SK-1000 Product Configuration
22-2
S3C9484/C9488/F9488
DEVELOPMENT TOOLS
TB9484/9488 TARGET BOARD
The TB9484/9488 target board is used for the S3C9484/C9488/F9488 microcontrollers. It is supported by the
SK-1000/SMDS2+ development systems.
REV.X
TB9484/88
200x. xx. xx
To User_VCC
IDLE
STOP
+
ON
+
OFF
VCC
RESET
U2
74HC11
GND
P0.0
P0.0
USE PORT
J101
144-QFP
S3E9480
EVA Chip
(REV0)REV1
(3EH.7)3FH.2
(3EH.0)3FH.1
(3EH.1)3FH.0
1
(3EH.2)3FH.7
SMDS2
1
2
50-Pin Connector
X-tal
(32KHz)
CN1
4DIP SW
100-Pin Connector
25
49
50
SMDS2+
SMxxxx
Figure 22-2. TB9484/88 Target Board Configuration
22-3
DEVELOPMENT TOOLS
S3C9484/C9488/F9488
Table 22-1. Power Selection Settings for TB9484/88
"To User_Vcc" Settings
Operating Mode
Comments
The SK-1000/SMDS2+ main
board supplies VCC to the
To user_Vcc
off
TB9484/88
on
External
Target
System
VCC
target board (evaluation chip)
and the target system.
VSS
VCC
SK-1000/SMDS2+
The SK-1000/SMDS2+ main
board supplies VCC only to the
To user_Vcc
off
on
TB9484/88
External
target board (evaluation chip).
The target system must have
its own power supply.
Target
System
VCC
VSS
VCC
SK-1000/SMDS2+
NOTE:
The following symbol in the "To User_Vcc" Setting column indicates the electrical short (off) configuration:
SMDS2+ Selection (SAM8)
In order to write data into program memory that is available in SMDS2+, the target board should be selected to be for
SMDS2+ through a switch as follows. Otherwise, the program memory writing function is not available.
Table 22-2. The SMDS2+ Tool Selection Setting
"SW1" Setting
SMDS
Operating Mode
SMDS2+
R/W*
SMDS2+
22-4
R/W*
Target
System
S3C9484/C9488/F9488
DEVELOPMENT TOOLS
ON
OFF
3FH.2
3FH.7
3FH.1
3FH.0
3FH.0
3FH.1
ON
Low
OFF
High
3EH.7 : Target board revision 1
3FH.2 : Target board revision 0
NOTES:
1. There is no ROM in the EVAchip. So smart option is not
determined by software but DIP switch.
2. Target board revision number is printed on the target
board (Refer to the Figure 22-2.)
Figure 22-4. DIP Switch for Smart Option
SWITCH
ON
OFF
3FH.2
XTin / XTout enable
Normal I/O pin enable
3FH.1
Internal RC oscillator
Basic Timer overflow used
3FH.0
Normal I/O pin enable
RESET Pin enable
3EH.7
LVR disable
LVR enable
22-5
DEVELOPMENT TOOLS
S3C9484/C9488/F9488
J101
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
50-PIN
DIP
S3C9228
(42-SDIP)
SOCKET
SEG18/INT0/P3.3
TACK/INT2/P3.5
VDD
N.C.
TEST
XTOUT/P0.1
ADC8/P0.3
AVREF
COM5/ADC5/P0.6
TBPWM/ADC3/P1.0
ADC1/P1.2
COM3/P1.4
COM1/P1.6
SEG0/P4.0
SEG2/P4.2
SEG4/P2.1
SEG6/P2.3
SEG8/P2.5
SEG10/P2.7
SEG12/P4.4
SEG14/P4.6
SEG16/RXD/P3.1
N.C.
N.C.
N.C.
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
P3.4/INT1/TAOUT
P3.6/INT3/TACAP
VSS
N.C.
P0.0/XTIN
P0.2/RESETB
P0.4/ADC7/COM7
P0.5/ADC6/COM6
P0.7/ADC4/COM4
P1.1/ADC2/BUZ
P1.3/ADC0
P1.5/COM2
P1.7/COM0
P4.1/SEG1
P2.0/SEG3
P2.2/SEG5
P2.4/SEG7
P2.6/SEG9
P4.3/SEG11
P4.5/SEG13
P3.0/SEG15
P3.2/TXD/SEG17
N.C.
N.C.
N.C.
Figure 22-4. 44-Pin Connector for TB9484/88
Target Board
Target System
J101
2
1
2
49
50
Target Cable for Connector
Part Name: AS20D
Order Code: SM6304
49
50
50-Pin Connector
50-Pin Connector
1
Figure 22-5. S3C9484/C9488/F9488 Probe Adapter for 44-pin Connector Package
22-6