SONIX SN8P2608

SN8P2608
8-Bit Micro-Controller
SN8P2608
USER’S MANUAL
Version 1.4
SONiX 8-Bit Micro-Controller
SONIX reserves the right to make change without further notice to any products herein to improve reliability, function or design. SONIX does not
assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent
rights nor the rights of others. SONIX products are not designed, intended, or authorized for us as components in systems intended, for surgical
implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SONIX product
could create a situation where personal injury or death may occur. Should Buyer purchase or use SONIX products for any such unintended or
unauthorized application. Buyer shall indemnify and hold SONIX and its officers, employees, subsidiaries, affiliates and distributors harmless against
all claims, cost, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use even if such claim alleges that SONIX was negligent regarding the design or manufacture of
the part.
SONiX TECHNOLOGY CO., LTD
Page 1
Version 1.4
SN8P2608
8-Bit Micro-Controller
AMENDENT HISTORY
Version
Date
VER 0.1~0.3
June. 2004
V0.1 ~ V0.3 is short form only.
VER 0.4
VER 0.5
July. 2004
July. 2004
VER 0.6
VER 1.0
July. 2004
Dec. 2004
VER 1.1
Jan. 2005
Complete version first issue,
1. Change the description of ”S” parameter in all instruction cycle related explanation.
2. Cancel the “B0MOV M, I” and “B0XCH A, M” instruction limitation.
Remove all TC0 description and modify programming information.
1. Add T0, TC1, PWM application notices.
2. T0C doesn’t support read and modify write instructions.
3. Modify operating mode, stack, reset, I/O, programming pins diagrams.
4. Modify timer, system clock descriptions.
5. Modify system clock description.
6. Remove ORG4~7 limitation.
1. Re-arrange partial edition layout.
2. Strongly recommend using SN8ICE-2K ICE to emulate SN8P2608. SN8IDE V1.99S
or later No More support SN8P2000 series emulation.
1. ADD Brown-Out reset circuit.
2. ADD Working Voltage vs. Frequency graphs.
1.
Modify Topr value.
2.
Modify Brown-Out Reset description
3.
Remove power consumption(Pc)
4.
Remove Noise Filter Enable Working Voltage
5.
Modify M2IDE 1.07
6.
Remove High clock32K mode
7.
Modify ELECTRICAL CHARACTERISTIC.
1.
Add Marking Definition.
2.
Modify ELECTRICAL CHARACTERISTIC.
3.
Modify RST/P4.7/VPP PIN DISCRIPTION.
1.
Remove DIP48 package.
Nov.2005
VER 1.2
Dec 2005
VER 1.3
Feb. 2007
VER 1.4
Sep. 2007
Description
SONiX TECHNOLOGY CO., LTD
Page 2
Version 1.4
SN8P2608
8-Bit Micro-Controller
Table of Content
AMENDENT HISTORY................................................................................................................................ 2
11
PRODUCT OVERVIEW......................................................................................................................... 7
1.1
1.2
1.3
1.4
1.5
22
FEATURES ........................................................................................................................................ 7
SYSTEM BLOCK DIAGRAM .......................................................................................................... 8
PIN ASSIGNMENT ........................................................................................................................... 9
PIN DESCRIPTIONS....................................................................................................................... 10
PIN CIRCUIT DIAGRAMS............................................................................................................. 11
CENTRAL PROCESSOR UNIT (CPU) .............................................................................................. 12
2.1
MEMORY MAP............................................................................................................................... 12
2.1.1
PROGRAM MEMORY (ROM) ................................................................................................. 12
2.1.1.1 RESET VECTOR (0000H) .................................................................................................. 13
2.1.1.2 INTERRUPT VECTOR (0008H)......................................................................................... 14
2.1.1.3 LOOK-UP TABLE DESCRIPTION.................................................................................... 16
2.1.1.4 JUMP TABLE DESCRIPTION ........................................................................................... 18
2.1.1.5 CHECKSUM CALCULATION........................................................................................... 20
2.1.2
CODE OPTION TABLE ........................................................................................................... 21
2.1.3
DATA MEMORY (RAM)........................................................................................................... 22
2.1.4
SYSTEM REGISTER................................................................................................................. 23
2.1.4.1 SYSTEM REGISTER TABLE ............................................................................................ 23
2.1.4.2 BIT DEFINITION of SYSTEM REGISTER....................................................................... 24
2.1.4.3 ACCUMULATOR ............................................................................................................... 25
2.1.4.4 PROGRAM FLAG ............................................................................................................... 26
2.1.4.5 PROGRAM COUNTER....................................................................................................... 28
2.1.4.6 H, L REGISTERS................................................................................................................. 31
2.1.4.7 Y, Z REGISTERS................................................................................................................. 32
2.1.4.8 R REGISTERS ..................................................................................................................... 33
2.2
ADDRESSING MODE .................................................................................................................... 34
2.2.1
IMMEDIATE ADDRESSING MODE....................................................................................... 34
2.2.2
DIRECTLY ADDRESSING MODE .......................................................................................... 34
2.2.3
INDIRECTLY ADDRESSING MODE ...................................................................................... 34
2.3
STACK OPERATION...................................................................................................................... 36
2.3.1
2.3.2
2.3.3
33
OVERVIEW .............................................................................................................................. 36
STACK REGISTERS ................................................................................................................. 37
STACK OPERATION EXAMPLE............................................................................................. 38
RESET ..................................................................................................................................................... 39
SONiX TECHNOLOGY CO., LTD
Page 3
Version 1.4
SN8P2608
8-Bit Micro-Controller
3.1
3.2
3.3
3.4
OVERVIEW..................................................................................................................................... 39
POWER ON RESET......................................................................................................................... 40
WATCHDOG RESET...................................................................................................................... 40
BROWN OUT RESET ..................................................................................................................... 41
3.4.1
BROWN OUT DESCRIPTION ................................................................................................. 41
3.4.2
THE SYSTEM OPERATING VOLTAGE DECSRIPTION........................................................ 42
3.4.3
BROWN OUT RESET IMPROVEMENT.................................................................................. 42
3.5
EXTERNAL RESET ........................................................................................................................ 44
3.6
EXTERNAL RESET CIRCUIT ....................................................................................................... 44
44
3.6.1
Simply RC Reset Circuit ........................................................................................................... 44
3.6.2
3.6.3
3.6.4
3.6.5
Diode & RC Reset Circuit ........................................................................................................ 45
Zener Diode Reset Circuit ........................................................................................................ 45
Voltage Bias Reset Circuit........................................................................................................ 46
External Reset IC...................................................................................................................... 47
SYSTEM CLOCK .................................................................................................................................. 48
4.1
4.2
4.3
4.4
OVERVIEW..................................................................................................................................... 48
CLOCK BLOCK DIAGRAM .......................................................................................................... 48
OSCM REGISTER ........................................................................................................................... 49
SYSTEM HIGH CLOCK ................................................................................................................. 50
4.4.1
EXTERNAL HIGH CLOCK...................................................................................................... 50
4.4.1.1 CRYSTAL/CERAMIC......................................................................................................... 51
4.4.1.2 RC......................................................................................................................................... 51
4.4.1.3 EXTERNAL CLOCK SIGNAL........................................................................................... 52
4.5
SYSTEM LOW CLOCK .................................................................................................................. 53
4.5.1
55
SYSTEM OPERATION MODE ........................................................................................................... 55
5.1
5.2
OVERVIEW..................................................................................................................................... 55
SYSTEM MODE SWITCHING....................................................................................................... 56
5.3
WAKEUP ......................................................................................................................................... 58
5.3.1
5.3.2
5.3.3
66
SYSTEM CLOCK MEASUREMENT ........................................................................................ 54
OVERVIEW .............................................................................................................................. 58
WAKEUP TIME........................................................................................................................ 58
P1W WAKEUP CONTROL REGISTER ................................................................................... 58
INTERRUPT........................................................................................................................................... 59
6.1
6.2
6.3
6.4
6.5
OVERVIEW..................................................................................................................................... 59
INTEN INTERRUPT ENABLE REGISTER................................................................................... 60
INTRQ INTERRUPT REQUEST REGISTER ................................................................................ 61
GIE GLOBAL INTERRUPT OPERATION .................................................................................... 61
PUSH, POP ROUTINE .................................................................................................................... 62
SONiX TECHNOLOGY CO., LTD
Page 4
Version 1.4
SN8P2608
8-Bit Micro-Controller
6.6
6.7
6.8
6.9
6.10
77
INT0 (P0.0) INTERRUPT OPERATION......................................................................................... 63
INT1 (P0.1) INTERRUPT OPERATION......................................................................................... 64
T0 INTERRUPT OPERATION ....................................................................................................... 65
TC1 INTERRUPT OPERATION..................................................................................................... 66
MULTI-INTERRUPT OPERATION............................................................................................... 67
I/O PORT ................................................................................................................................................ 68
7.1
7.2
7.3
7.4
88
I/O PORT MODE ............................................................................................................................. 68
I/O PULL UP REGISTER ................................................................................................................ 70
I/O OPEN-DRAIN REGISTER........................................................................................................ 71
I/O PORT DATA REGISTER .......................................................................................................... 72
TIMERS .................................................................................................................................................. 73
8.1
8.2
WATCHDOG TIMER...................................................................................................................... 73
TIMER 0 (T0) ................................................................................................................................... 75
8.2.1
OVERVIEW .............................................................................................................................. 75
8.2.2
T0M MODE REGISTER........................................................................................................... 75
8.2.3
T0C COUNTING REGISTER................................................................................................... 76
8.2.4
T0 TIMER OPERATION SEQUENCE ..................................................................................... 77
8.2.5
T0 TIMER NOTICE .................................................................................................................. 78
8.3
TIMER/COUNTER 1 (TC1) ............................................................................................................ 79
8.3.1
OVERVIEW .............................................................................................................................. 79
8.3.2
TC1M MODE REGISTER ........................................................................................................ 80
8.3.3
TC1C COUNTING REGISTER ................................................................................................ 81
8.3.4
TC1R AUTO-LOAD REGISTER .............................................................................................. 82
8.3.5
TC1 CLOCK FREQUENCY OUTPUT (BUZZER) .................................................................. 83
8.3.6
TC1 TIMER OPERATION SEQUENCE .................................................................................. 84
8.3.7
TC1 TIMER NOTICE ............................................................................................................... 85
8.4
PWM1 MODE .................................................................................................................................. 85
8.4.1
8.4.2
8.4.3
8.4.4
99
OVERVIEW .............................................................................................................................. 86
TC1IRQ AND PWM DUTY ...................................................................................................... 87
PWM PROGRAM EXAMPLE .................................................................................................. 88
PWM1 DUTY CHANGING NOTICE ....................................................................................... 89
INSTRUCTION TABLE ....................................................................................................................... 91
1100
ELECTRICAL CHARACTERISTIC .............................................................................................. 92
10.1
ABSOLUTE MAXIMUM RATING ................................................................................................ 92
10.2
10.3
ELECTRICAL CHARACTERISTIC............................................................................................... 92
CHARACTERISTIC GRAPHS ....................................................................................................... 93
1111
APPLICATION NOTICE ................................................................................................................. 94
SONiX TECHNOLOGY CO., LTD
Page 5
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.1
DEVELOPMENT TOOL VERSION ......................................................................................................... 94
11.1.1
ICE (In circuit emulation) ........................................................................................................ 94
11.1.2
OTP Writer ............................................................................................................................... 94
11.1.3
SN8IDE..................................................................................................................................... 94
11.2 CODE OPTION................................................................................................................................ 95
11.2.1
NOISE FILTER CODE OPTION ............................................................................................. 95
11.2.2
WATCHDOG ............................................................................................................................ 95
11.3 INTERRUPT VECTOR (ORG 8)..................................................................................................... 96
11.4 S8KD-2 ICE ENULATION.............................................................................................................. 97
11.4.1
ICE_MODE .............................................................................................................................. 97
11.4.2
INSTRUCTION CYCLE............................................................................................................ 98
11.4.3
SYSTEM CLOCK.................................................................................................................... 100
11.4.4
WATCHDOG TIMER ............................................................................................................. 101
11.4.5
P0 EMULATION .................................................................................................................... 102
11.4.5.1
@P0n_MODE ................................................................................................................ 102
11.4.5.2
@P0n_OUT .................................................................................................................... 102
11.4.5.3
PEDGE ........................................................................................................................... 103
11.4.6
11.4.7
1122
PWM DUTY............................................................................................................................ 104
OTHER MACRO..................................................................................................................... 105
OTP PROGRAMMING PIN........................................................................................................... 106
12.1.1
12.1.2
12.1.3
1133
The pin assignment of Easy Writer transition board socket: ................................................. 106
The pin assignment of Writer V3.0 and V2.5 transition board socket: .................................. 106
SN8P2608/SN8P2606 Programming Pin Mapping: .............................................................. 107
PACKAGE INFORMATION ......................................................................................................... 108
13.1
13.2
1144
SSOP 48 PIN................................................................................................................................... 108
P-DIP 40 PIN .................................................................................................................................. 109
MARKING DEFINITION............................................................................................................... 110
14.1
14.2
INTRODUCTION .......................................................................................................................... 110
MARKING INDETIFICATION SYSTEM.................................................................................... 110
14.3
14.4
MARKING EXAMPLE ................................................................................................................. 111
DATECODE SYSTEM .................................................................................................................. 111
SONiX TECHNOLOGY CO., LTD
Page 6
Version 1.4
SN8P2608
8-Bit Micro-Controller
1
PRODUCT OVERVIEW
1.1 FEATURES
♦
Memory configuration
OTP ROM size: 6K * 16 bits.
RAM size: 128 * 8 bits.
Eight levels stack buffer
♦
I/O pin configuration
Bi-directional: P0, P1, P2, P4, P5
Input only: P4.7 shared with reset pin.
Programmable open-drain: P1.0, P1.1
Wakeup: P0, P1 level change trigger
Pull-up resisters: P0, P1, P2, P4, P5
External Interrupt trigger edge:
P0.0 controlled by PEDGE register
P0.1 is falling edge trigger only
♦
Powerful instructions
One clocks per instruction cycle (1T)
Most of instructions are one cycle only.
All ROM area JMP instruction.
All ROM area CALL address instruction.
All ROM area lookup table function (MOVC)
)
♦
Four interrupt sources
Two internal interrupts: T0, TC1.
Two external interrupts: INT0, INT1.
♦
Two 8-bit Timer/Counter
T0: Basic timer
TC1: Auto-reload timer/Counter/PWM1/Buzzer output
♦
On chip watchdog timer and clock source is internal
low clock RC type (16KHz @3V, 32KHz @5V).
♦
Dual system clocks
External high clock: RC type up to 10 MHz
External high clock: Crystal type up to 16 MHz
Internal low clock: RC type 16KHz(3V), 32KHz(5V)
♦
Operating modes
Normal mode: Both high and low clock active
Slow mode: Low clock only
Sleep mode: Both high and low clock stop
Green mode: Periodical wakeup by T0 timer
♦
Package (Chip form support)
P-DIP 40 pins
SSOP 48 pins
Features Selection Table
Timer
CHIP
ROM RAM Stack
SN8P2606 6K*16 128
SN8P2608 6K*16 128
8
T0
V
TC1
V
8
V
V
SONiX TECHNOLOGY CO., LTD
I/O
34
40
Green PWM Wakeup
Mode Buzzer Pin No.
V
16
V
V
Page 7
V
16
Package
P-DIP 40
SSOP 48
Version 1.4
SN8P2608
8-Bit Micro-Controller
1.2 SYSTEM BLOCK DIAGRAM
SN8P2608/2606
PC
R
O
M
IR
FLAGS
H-OSC
Internal
Low
RC
TIMING GENERATOR
ALU
RAM
ACC
POR
Watch
Dog
PWM
PWM & BUZZER
SYSTEM REGISTER
INTERRUPT
CONTROL
TIMER & COUNTER
PORT 0
PORT 1
SONiX TECHNOLOGY CO., LTD
PORT 2
PORT 4
Page 8
PORT 5
Version 1.4
SN8P2608
8-Bit Micro-Controller
1.3 PIN ASSIGNMENT
SN8P2606P (P-DIP 40 pins)
RST/VPP/P4.7
P1.1
P1.2
P1.3
P1.4
P0.1/INT1
P1.5
P1.6
P1.7
P4.0
VDD
VSS
XIN
XOUT/Fcpu
P4.2
P5.5
P5.4
P5.3/PWM1/BZ1
P5.2
P5.1
1
U
40
2
39
3
38
4
37
5
36
6
35
7
34
8
33
9
32
10
31
11
30
12
29
13
28
14
27
15
26
16
25
17
24
18
23
19
22
20
21
SN8P2606P
P1.0
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
P0.0/INT0
VDD
VSS
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
P5.6
P5.0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
P0.7
P0.6
P0.5
P4.6
P4.5
P0.4
P0.3
P0.2
P0.0/INT0
VDD
NC
NC
VSS
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
P5.6
P5.7
P5.0
SN8P2608X (SSOP 48 pins)
P1.0
RST/VPP/P4.7
P1.1
P1.2
P1.3
P1.4
P0.1/INT1
P1.5
P1.6
P1.7
P4.0
P4.1
VDD
VSS
XIN
XOUT/Fcpu
P4.2
P4.3
P4.4
P5.5
P5.4
P5.3/PWM1/BZ1
P5.2
P5.1
U
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
SN8P2608X
SONiX TECHNOLOGY CO., LTD
Page 9
Version 1.4
SN8P2608
8-Bit Micro-Controller
1.4 PIN DESCRIPTIONS
PIN NAME
VDD, VSS
TYPE
P
P4.7/RST/VPP
I, P
XIN
I
XOUT/Fcpu
I/O
P0.0/INT0
I/O
P0.1/INT1
I/O
P0.2~P0.7
I/O
P1.0~P1.1
I/O
P1.2~P1.7
I/O
P2.0~P2.7
I/O
P4.0~P4.6
I/O
P5.0~P5.2,
P5.4~P5.7
I/O
P5.3/BZ1/PWM1
I/O
DESCRIPTION
Power supply input pins for digital circuit.
P4.7: Input only pin (Schmitt trigger) if disable external reset function.
P4.7 without build-in pull-up resister.
P4.7 is input only pin without pull-up resistor under P4.7 mode. Add the 100 ohm
external resistor on P4.7, when it is set to be input pin.
RST: System reset input pin. Schmitt trigger structure, low active, normal stay to “high”.
VPP: OTP programming pin.
Oscillator input pin while external oscillator enable (crystal and RC).
XOUT: Oscillator output pin while external crystal enable.
Fcpu: Signal output pin while external RC mode enable.
Port 0.0 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
INT0 trigger pin (Schmitt trigger).
Port 0.1 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
INT1 trigger pin (Schmitt trigger).
TC1 event counter clock input pin.
Bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Port 1.0, P1.1 bi-direction pin and open-drain pin. Schmitt trigger structure as input
mode.
Built-in pull-up resisters.
Bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Port 5.3 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
TC1 ÷ 2 signal output pin for buzzer or PWM1 output pin.
SONiX TECHNOLOGY CO., LTD
Page 10
Version 1.4
SN8P2608
8-Bit Micro-Controller
1.5 PIN CIRCUIT DIAGRAMS
Port 0, 1, 2, 4, 5 structure:
Pull-Up
PnM
PnM, PnUR
Input Bus
Pin
Output
Latch
Output Bus
Port 1.0, P1.1 structure:
Pull-Up
PnM
PnM, PnUR
Input Bus
Pin
Output
Latch
Output Bus
Open-Drain
P1OC
Port 4.7 structure:
Ext. Reset
Code Option
Int. Bus
Pin
SONiX TECHNOLOGY CO., LTD
Int. Rst
Page 11
Version 1.4
SN8P2608
8-Bit Micro-Controller
2
CENTRAL PROCESSOR UNIT (CPU)
2.1 MEMORY MAP
2.1.1 PROGRAM MEMORY (ROM)
)
6K words ROM
0000H
0001H
0002H
0003H
0004H
0005H
0006H
0007H
0008H
0009H
.
.
000FH
0010H
0011H
.
.
.
.
.
17FBH
17FCH
17FDH
17FEH
17FFH
SONiX TECHNOLOGY CO., LTD
ROM
Reset vector
General purpose area
User reset vector
Jump to user start address
Jump to user start address
Jump to user start address
General purpose area
Interrupt vector
User interrupt vector
User program
General purpose area
End of user program
Reserved
Page 12
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.1.1
RESET VECTOR (0000H)
A one-word vector address area is used to execute system reset.
) Power On Reset (NT0=1, NPD=0).
) Watchdog Reset (NT0=0, NPD=0).
) External Reset (NT0=1, NPD=1).
After power on reset, external reset or watchdog timer overflow reset, then the chip will restart the program from
address 0000h and all system registers will be set as default values. It is easy to know reset status from NT0, NPD
flags of PFLAG register. The following example shows the way to define the reset vector in the program memory.
¾
Example: Defining Reset Vector
ORG
JMP
…
0
START
ORG
10H
START:
…
…
ENDP
SONiX TECHNOLOGY CO., LTD
; 0000H
; Jump to user program address.
; 0010H, The head of user program.
; User program
; End of program
Page 13
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.1.2
INTERRUPT VECTOR (0008H)
A 1-word vector address area is used to execute interrupt request. If any interrupt service executes, the program
counter (PC) value is stored in stack buffer and jump to 0008h of program memory to execute the vectored interrupt.
Users have to define the interrupt vector and the first instruction at ORG 8 must be “JMP” or “NOP”. The following
example shows the way to define the interrupt vector in the program memory.
’
Note: ”PUSH”, “POP” instructions save and load ACC/PFLAG without (NT0, NPD). PUSH/POP buffer is a
unique buffer and only one level.
’
Note: The first instruction at ORG 8 must be “JMP” or “NOP”.
¾
Example: Defining Interrupt Vector. The interrupt service routine is following ORG 8.
.CODE
ORG
JMP
…
0
START
; 0000H
; Jump to user program address.
ORG
NOP
PUSH
…
…
POP
RETI
…
8
; Interrupt vector.
; The first instruction at ORG 8.
; Save ACC and PFLAG register to buffers.
; Load ACC and PFLAG register from buffers.
; End of interrupt service routine
START:
…
…
JMP
…
; The head of user program.
; User program
START
ENDP
SONiX TECHNOLOGY CO., LTD
; End of user program
; End of program
Page 14
Version 1.4
SN8P2608
8-Bit Micro-Controller
¾
Example: Defining Interrupt Vector. The interrupt service routine is following user program.
.DATA
ACCBUF
DS 1
PFLAGBUF DS 1
; Define ACCBUF for store ACC data.
; Define PFLAGBUF for store PFLAG data.
ORG
JMP
…
ORG
JMP
0
START
; 0000H
; Jump to user program address.
8
MY_IRQ
; Interrupt vector.
; 0008H, Jump to interrupt service routine address.
ORG
10H
.CODE
START:
…
…
…
JMP
…
; 0010H, The head of user program.
; User program.
START
MY_IRQ:
PUSH
…
…
POP
RETI
…
ENDP
’
; End of user program.
;The head of interrupt service routine.
; Save ACC and PFLAG register to buffers.
; Load ACC and PFLAG register from buffers.
; End of interrupt service routine.
; End of program.
Note: It is easy to understand the rules of SONIX program from demo programs given above. These
points are as following:
1. The address 0000H is a “JMP” instruction to make the program starts from the beginning.
2. The address 0008H is interrupt vector and the first instruction must be “NOP” or “JMP”.
3. User’s program is a loop routine for main purpose application.
SONiX TECHNOLOGY CO., LTD
Page 15
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.1.3
LOOK-UP TABLE DESCRIPTION
In the ROM’s data lookup function, Y register is pointed to middle byte address (bit 8~bit 15) and Z register is pointed
to low byte address (bit 0~bit 7) of ROM. After MOVC instruction executed, the low-byte data will be stored in ACC and
high-byte data stored in R register.
¾
Example: To look up the ROM data located “TABLE1”.
@@:
TABLE1:
B0MOV
B0MOV
MOVC
Y, #TABLE1$M
Z, #TABLE1$L
INCMS
JMP
INCMS
NOP
Z
@F
Y
MOVC
…
DW
DW
DW
…
0035H
5105H
2012H
; To set lookup table1’s middle address
; To set lookup table1’s low address.
; To lookup data, R = 00H, ACC = 35H
; Increment the index address for next address.
; Z+1
; Z is not overflow.
; Z overflow (FFH Æ 00), Æ Y=Y+1
;
;
; To lookup data, R = 51H, ACC = 05H.
;
; To define a word (16 bits) data.
’
Note: The Y register will not increase automatically when Z register crosses boundary from 0xFF to
0x00. Therefore, user must take care such situation to avoid look-up table errors. If Z register
overflows, Y register must be added one. The following INC_YZ macro shows a simple method
to process Y and Z registers automatically.
¾
Example: INC_YZ macro.
INC_YZ
MACRO
INCMS
JMP
INCMS
NOP
Z
@F
; Z+1
; Not overflow
Y
; Y+1
; Not overflow
@@:
ENDM
SONiX TECHNOLOGY CO., LTD
Page 16
Version 1.4
SN8P2608
8-Bit Micro-Controller
¾
Example: Modify above example by “INC_YZ” macro.
B0MOV
B0MOV
MOVC
Y, #TABLE1$M
Z, #TABLE1$L
INC_YZ
@@:
TABLE1:
MOVC
…
DW
DW
DW
…
0035H
5105H
2012H
; To set lookup table1’s middle address
; To set lookup table1’s low address.
; To lookup data, R = 00H, ACC = 35H
; Increment the index address for next address.
;
; To lookup data, R = 51H, ACC = 05H.
;
; To define a word (16 bits) data.
The other example of look-up table is to add Y or Z index register by accumulator. Please be careful if “carry” happen.
¾
Example: Increase Y and Z register by B0ADD/ADD instruction.
B0MOV
B0MOV
Y, #TABLE1$M
Z, #TABLE1$L
; To set lookup table’s middle address.
; To set lookup table’s low address.
B0MOV
B0ADD
A, BUF
Z, A
; Z = Z + BUF.
B0BTS1
JMP
INCMS
NOP
FC
GETDATA
Y
; Check the carry flag.
; FC = 0
; FC = 1. Y+1.
GETDATA:
;
; To lookup data. If BUF = 0, data is 0x0035
; If BUF = 1, data is 0x5105
; If BUF = 2, data is 0x2012
MOVC
…
TABLE1:
DW
DW
DW
…
0035H
5105H
2012H
SONiX TECHNOLOGY CO., LTD
; To define a word (16 bits) data.
Page 17
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.1.4
JUMP TABLE DESCRIPTION
The jump table operation is one of multi-address jumping function. Add low-byte program counter (PCL) and ACC
value to get one new PCL. If PCL is overflow after PCL+ACC, PCH adds one automatically. The new program counter
(PC) points to a series jump instructions as a listing table. It is easy to make a multi-jump program depends on the
value of the accumulator (A).
’
Note: PCH only support PC up counting result and doesn’t support PC down counting. When PCL is
carry after PCL+ACC, PCH adds one automatically. If PCL borrow after PCL–ACC, PCH keeps value and
not change.
¾
Example: Jump table.
ORG
0X0100
; The jump table is from the head of the ROM boundary
B0ADD
JMP
JMP
JMP
JMP
PCL, A
A0POINT
A1POINT
A2POINT
A3POINT
; PCL = PCL + ACC, PCH + 1 when PCL overflow occurs.
; ACC = 0, jump to A0POINT
; ACC = 1, jump to A1POINT
; ACC = 2, jump to A2POINT
; ACC = 3, jump to A3POINT
SONIX provides a macro for safe jump table function. This macro will check the ROM boundary and move the jump
table to the right position automatically. The side effect of this macro maybe wastes some ROM size.
¾
Example: If “jump table” crosses over ROM boundary will cause errors.
@JMP_A
’
MACRO
IF
JMP
ORG
ENDIF
ADD
ENDM
VAL
(($+1) !& 0XFF00) !!= (($+(VAL)) !& 0XFF00)
($ | 0XFF)
($ | 0XFF)
PCL, A
Note: “VAL” is the number of the jump table listing number.
SONiX TECHNOLOGY CO., LTD
Page 18
Version 1.4
SN8P2608
8-Bit Micro-Controller
¾
Example: “@JMP_A” application in SONIX macro file called “MACRO3.H”.
B0MOV
@JMP_A
JMP
JMP
JMP
JMP
JMP
A, BUF0
5
A0POINT
A1POINT
A2POINT
A3POINT
A4POINT
; “BUF0” is from 0 to 4.
; The number of the jump table listing is five.
; ACC = 0, jump to A0POINT
; ACC = 1, jump to A1POINT
; ACC = 2, jump to A2POINT
; ACC = 3, jump to A3POINT
; ACC = 4, jump to A4POINT
If the jump table position is across a ROM boundary (0x00FF~0x0100), the “@JMP_A” macro will adjust the jump table
routine begin from next RAM boundary (0x0100).
¾
Example: “@JMP_A” operation.
; Before compiling program.
ROM address
0X00FD
0X00FE
0X00FF
0X0100
0X0101
B0MOV
@JMP_A
JMP
JMP
JMP
JMP
JMP
A, BUF0
5
A0POINT
A1POINT
A2POINT
A3POINT
A4POINT
; “BUF0” is from 0 to 4.
; The number of the jump table listing is five.
; ACC = 0, jump to A0POINT
; ACC = 1, jump to A1POINT
; ACC = 2, jump to A2POINT
; ACC = 3, jump to A3POINT
; ACC = 4, jump to A4POINT
A, BUF0
5
A0POINT
A1POINT
A2POINT
A3POINT
A4POINT
; “BUF0” is from 0 to 4.
; The number of the jump table listing is five.
; ACC = 0, jump to A0POINT
; ACC = 1, jump to A1POINT
; ACC = 2, jump to A2POINT
; ACC = 3, jump to A3POINT
; ACC = 4, jump to A4POINT
; After compiling program.
ROM address
0X0100
0X0101
0X0102
0X0103
0X0104
B0MOV
@JMP_A
JMP
JMP
JMP
JMP
JMP
SONiX TECHNOLOGY CO., LTD
Page 19
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.1.5
CHECKSUM CALCULATION
The last ROM address are reserved area. User should avoid these addresses (last address) when calculate the
Checksum value.
¾
Example: The demo program shows how to calculated Checksum from 00H to the end of user’s code.
MOV
B0MOV
MOV
B0MOV
CLR
CLR
A,#END_USER_CODE$L
END_ADDR1, A
; Save low end address to end_addr1
A,#END_USER_CODE$M
END_ADDR2, A
; Save middle end address to end_addr2
Y
; Set Y to 00H
Z
; Set Z to 00H
MOVC
B0BSET
ADD
MOV
ADC
JMP
FC
DATA1, A
A, R
DATA2, A
END_CHECK
; Clear C flag
; Add A to Data1
INCMS
JMP
JMP
Z
@B
Y_ADD_1
; Z=Z+1
; If Z != 00H calculate to next address
; If Z = 00H increase Y
MOV
CMPRS
JMP
MOV
CMPRS
JMP
JMP
A, END_ADDR1
A, Z
AAA
A, END_ADDR2
A, Y
AAA
CHECKSUM_END
; If Yes, check if Y = middle end address
; If Not jump to checksum calculate
; If Yes checksum calculated is done.
INCMS
NOP
JMP
Y
; Increase Y
@B
; Jump to checksum calculate
@@:
; Add R to Data2
; Check if the YZ address = the end of code
AAA:
END_CHECK:
; Check if Z = low end address
; If Not jump to checksum calculate
Y_ADD_1:
CHECKSUM_END:
…
…
END_USER_CODE:
SONiX TECHNOLOGY CO., LTD
; Label of program end
Page 20
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.2
CODE OPTION TABLE
Code Option
Content
RC
High_Clk
12M X’tal
4M X’tal
Always_On
Watch_Dog
Enable
Disable
Fosc/1
Fcpu
Reset_Pin
Security
Noise_Filter
’
Fosc/2
Fosc/4
Fosc/8
Reset
P47
Enable
Disable
Enable
Disable
Function Description
Low cost RC for external high clock oscillator and XOUT becomes to
Fcpu output pin.
High speed crystal /resonator (e.g. 12MHz) for external high clock
oscillator.
Standard crystal /resonator (e.g. 4M) for external high clock oscillator.
Watchdog timer always on even in power down and green mode.
Enable watchdog timer. Watchdog timer stops in power down mode and
green mode.
Disable Watchdog function.
Instruction cycle is oscillator clock.
Notice: In Fosc/1, Noise Filter must be disabled.
Instruction cycle is 2 oscillator clocks.
Notice: In Fosc/2, Noise Filter must be disabled.
Instruction cycle is 4 oscillator clocks.
Instruction cycle is 8 oscillator clocks.
Enable External reset pin.
Enable P4.7 input only without pull-up resister.
Enable ROM code Security function.
Disable ROM code Security function.
Enable Noise Filter and the Fcpu is Fosc/4~Fosc/8.
Disable Noise Filter and the Fcpu is Fosc/1~Fosc/8.
Note:
1. In high noisy environment, enable “Noise Filter” and set Watch_Dog as “Always_On”
is strongly recommended. Enable “Noise_Filter” will limit the Fcpu = Fosc/4 ~ Fosc/8.
2. If users define watchdog as “Always_On”, assembler will Enable “Watch_Dog”
automatically.
3. Fcpu code option is only available for High Clock. Fcpu of slow mode is Fosc/4 (the
Fosc is internal low clock).
SONiX TECHNOLOGY CO., LTD
Page 21
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.3 DATA MEMORY (RAM)
)
128 X 8-bit RAM
BANK 0
Address
000h
“
“
“
“
“
07Fh
080h
“
“
“
“
“
0FFh
SONiX TECHNOLOGY CO., LTD
RAM location
General purpose area
080h~0FFh of Bank 0 store system
registers (128 bytes).
System register
End of bank 0 area
Page 22
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.4 SYSTEM REGISTER
2.1.4.1
8
9
A
B
C
D
E
F
SYSTEM REGISTER TABLE
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
L
H
R
Z
Y
-
PFLAG
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
P0M
-
-
-
-
-
-
PEDGE
P1W
P1M
P2M
-
P4M
P5M
-
-
INTRQ
INTEN
OSCM
-
WDTR
-
PCL
PCH
P0
P1
P2
-
P4
P5
-
-
T0M
T0C
-
-
TC1M
TC1C
TC1R
STKP
P0UR
P1UR
P2UR
-
P4UR
P5UR
@HL
@YZ
P1OC
-
-
-
-
-
-
STK7L STK7H
STK6L STK6H STK5L STK5H STK4L STK4H
STK3L
STK3H STK2L STK2H STK1L STK1H STK0L STK0H
Description
PFLAG =
H, L =
P1W =
PnM =
P1OC =
INTRQ =
OSCM =
T0M =
TC1M =
TC1R =
STKP =
@YZ =
ROM page and special flag register.
Working, @HL and ROM addressing register.
Port 1 wakeup register.
Port n input/output mode register.
Port 1 open-drain control register.
Interrupt request register.
Oscillator mode register.
T0 mode register.
TC1 mode register.
TC1 auto-reload data buffer.
Stack pointer buffer.
RAM YZ indirect addressing index pointer.
SONiX TECHNOLOGY CO., LTD
R=
Y, Z =
PEDGE =
Pn =
PnUR =
INTEN =
PCH, PCL =
T0C =
TC1C =
WDTR =
STK0~STK7 =
@HL =
Page 23
Working register and ROM look-up data buffer.
Working, @YZ and ROM addressing register.
P0.0 edge direction register.
Port n data buffer.
Port n pull-up resister control register.
Interrupt enable register.
Program counter.
TC1 counting register.
TC1 counting register.
Watchdog timer clear register.
Stack 0 ~ stack 7 buffer.
RAM HL indirect addressing index pointer.
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.4.2
Address
080H
081H
082H
083H
084H
086H
0B8H
0BFH
0C0H
0C1H
0C2H
0C4H
0C5H
0C8H
0C9H
0CAH
0CCH
0CEH
0CFH
0D0H
0D1H
0D2H
0D4H
0D5H
0D8H
0D9H
0DCH
0DDH
0DEH
0DFH
0E0H
0E1H
0E2H
0E4H
0E5H
0E6H
0E7H
0E9H
0F0H
0F1H
0F2H
0F3H
0F4H
0F5H
0F6H
0F7H
0F8H
0F9H
0FAH
0FBH
0FCH
0FDH
0FEH
0FFH
’
BIT DEFINITION of SYSTEM REGISTER
Bit7
LBIT7
HBIT7
RBIT7
ZBIT7
YBIT7
NT0
P07M
Bit6
LBIT6
HBIT6
RBIT6
ZBIT6
YBIT6
NPD
P06M
Bit5
LBIT5
HBIT5
RBIT5
ZBIT5
YBIT5
Bit4
LBIT4
HBIT4
RBIT4
ZBIT4
YBIT4
Bit3
LBIT3
HBIT3
RBIT3
ZBIT3
YBIT3
P05M
P17W
P17M
P27M
P16W
P16M
P26M
P46M
P56M
TC1IRQ
TC1IEN
P15W
P15M
P25M
P45M
P55M
P03M
P00G0
P13W
P13M
P23M
P43M
P53M
WDTR7
PC7
WDTR6
PC6
WDTR5
PC5
P07
P17
P27
P47
P57
T0ENB
T0C7
TC1ENB
TC1C7
TC1R7
GIE
P07R
P17R
P27R
P06
P16
P26
P46
P56
T0rate2
T0C6
TC1rate2
TC1C6
TC1R6
P05
P15
P25
P45
P55
T0rate1
T0C5
TC1rate1
TC1C5
TC1R5
P04M
P00G1
P14W
P14M
P24M
P44M
P54M
T0IRQ
T0IEN
CPUM1
WDTR4
PC4
PC12
P04
P14
P24
P44
P54
T0rate0
T0C4
TC1rate0
TC1C4
TC1R4
CPUM0
WDTR3
PC3
PC11
P03
P13
P23
P43
P53
CLKMD
WDTR2
PC2
PC10
P02
P12
P22
P42
P52
T0C3
TC1CKS
TC1C3
TC1R3
P57R
@HL7
@YZ7
P06R
P16R
P26R
P46R
P56R
@ HL 6
@YZ6
P05R
P15R
P25R
P45R
P55R
@ HL5
@YZ5
P04R
P14R
P24R
P44R
P54R
@ HL4
@YZ4
P03R
P13R
P23R
P43R
P53R
@ HL3
@YZ3
T0C2
ALOAD1
TC1C2
TC1R2
STKPB2
P02R
P12R
P22R
P42R
P52R
@ HL2
@YZ2
S7PC7
S6PC7
S5PC7
S4PC7
S3PC7
S7PC6
S6PC6
S5PC6
S4PC6
S3PC6
S7PC5
S6PC5
S5PC5
S4PC5
S3PC5
S2PC7
S2PC6
S2PC5
S1PC7
S1PC6
S1PC5
S0PC7
S0PC6
S0PC5
S7PC4
S7PC12
S6PC4
S6PC12
S5PC4
S6PC12
S4PC4
S4PC12
S3PC4
S3PC12
S2PC4
S2PC12
S1PC4
S1PC12
S0PC4
S0PC12
S7PC3
S7PC11
S6PC3
S6PC11
S5PC3
S5PC11
S4PC3
S4PC11
S3PC3
S3PC11
S2PC3
S2PC11
S1PC3
S1PC11
S0PC3
S0PC11
S7PC2
S7PC10
S6PC2
S6PC10
S5PC2
S5PC10
S4PC2
S4PC10
S3PC2
S3PC10
S2PC2
S2PC10
S1PC2
S1PC10
S0PC2
S0PC10
P57M
Bit2
LBIT2
HBIT2
RBIT2
ZBIT2
YBIT2
C
P02M
Bit1
LBIT1
HBIT1
RBIT1
ZBIT1
YBIT1
DC
P01M
Bit0
LBIT0
HBIT0
RBIT0
ZBIT0
YBIT0
Z
P00M
P12W
P12M
P22M
P42M
P52M
P11W
P11M
P21M
P41M
P51M
P01IRQ
P01IEN
STPHX
WDTR1
PC1
PC9
P01
P11
P21
P41
P51
P10W
P10M
P20M
P40M
P50M
P00IRQ
P00IEN
T0C1
TC1OUT
TC1C1
TC1R1
STKPB1
P01R
P11R
P21R
P41R
P51R
@ HL1
@YZ1
P11OC
S7PC1
S7PC9
S6PC1
S6PC9
S5PC1
S5PC9
S4PC1
S4PC9
S3PC1
S3PC9
S2PC1
S2PC9
S1PC1
S1PC9
S0PC1
S0PC9
T0C0
PWM1OUT
TC1C0
TC1R0
STKPB0
P00R
P10R
P20R
P40R
P50R
@ HL0
@YZ0
P10OC
S7PC0
S7PC8
S6PC0
S6PC8
S5PC0
S5PC8
S4PC0
S4PC8
S3PC0
S3PC8
S2PC0
S2PC8
S1PC0
S1PC8
S0PC0
S0PC8
WDTR0
PC0
PC8
P00
P10
P20
P40
P50
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
R/W
W
W
W
W
W
R/W
R/W
W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Remarks
L
H
R
Z
Y
PFLAG
P0M
PEDGE
P1W
P1M
P2M
P4M
P5M
INTRQ
INTEN
OSCM
WDTR
PCL
PCH
P0
P1
P2
P4
P5
T0M
T0C
TC1M
TC1C
TC1R
STKP
P0UR
P1UR
P2UR
P4UR
P5UR
@ HL
@YZ
P1OC
STK7L
STK7H
STK6L
STK6H
STK5L
STK5H
STK4L
STK4H
STK3L
STK3H
STK2L
STK2H
STK1L
STK1H
STK0L
STK0H
Note:
1. To avoid system error, make sure to put all the “0” and “1” as it indicates in the above table.
2.
3.
4.
5.
All of register names had been declared in SN8ASM assembler.
One-bit name had been declared in SN8ASM assembler with “F” prefix code.
“b0bset”, “b0bclr”, ”bset”, ”bclr” instructions are only available to the “R/W” registers.
For detail description, please refer to the “System Register Quick Reference Table”.
SONiX TECHNOLOGY CO., LTD
Page 24
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.4.3
ACCUMULATOR
The ACC is an 8-bit data register responsible for transferring or manipulating data between ALU and data memory. If
the result of operating is zero (Z) or there is carry (C or DC) occurrence, then these flags will be set to PFLAG register.
ACC is not in data memory (RAM), so ACC can’t be access by “B0MOV” instruction during the instant addressing
mode.
¾
Example: Read and write ACC value.
; Read ACC data and store in BUF data memory.
MOV
BUF, A
; Write a immediate data into ACC.
MOV
A, #0FH
; Write ACC data from BUF data memory.
MOV
A, BUF
B0MOV
A, BUF
; or
The system doesn’t store ACC and PFLAG value when interrupt executed. ACC and PFLAG data must be saved to
other data memories. “PUSH”, “POP” save and load ACC, PFLAG data into buffers.
¾
Example: Protect ACC and working registers.
INT_SERVICE:
PUSH
…
…
POP
; Save ACC and PFLAG to buffers.
.
RETI
SONiX TECHNOLOGY CO., LTD
; Load ACC and PFLAG from buffers.
; Exit interrupt service vector
Page 25
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.4.4
PROGRAM FLAG
The PFLAG register contains the arithmetic status of ALU operation, system reset status and LVD detecting status.
NT0, NPD bits indicate system reset status including power on reset, LVD reset, reset by external pin active and
watchdog reset. C, DC, Z bits indicate the result status of ALU operation.
086H
PFLAG
Read/Write
After reset
Bit [7:6]
Bit 7
NT0
R/W
-
Bit 6
NPD
R/W
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
C
R/W
0
Bit 1
DC
R/W
0
Bit 0
Z
R/W
0
NT0, NPD: Reset status flag.
NT0
0
0
1
1
NPD
0
1
0
1
Reset Status
Watch-dog time out
Reserved
Reset by LVD
Reset by external Reset Pin
Bit 2
C: Carry flag
1 = Addition with carry, subtraction without borrowing, rotation with shifting out logic “1”, comparison result
≥ 0.
0 = Addition without carry, subtraction with borrowing signal, rotation with shifting out logic “0”, comparison
result < 0.
Bit 1
DC: Decimal carry flag
1 = Addition with carry from low nibble, subtraction without borrow from high nibble.
0 = Addition without carry from low nibble, subtraction with borrow from high nibble.
Bit 0
Z: Zero flag
1 = The result of an arithmetic/logic/branch operation is zero.
0 = The result of an arithmetic/logic/branch operation is not zero.
’
Note: Refer to instruction set table for detailed information of C, DC and Z flags.
SONiX TECHNOLOGY CO., LTD
Page 26
Version 1.4
SN8P2608
8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 27
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.4.5 PROGRAM COUNTER
The program counter (PC) is a 13-bit binary counter separated into the high-byte 5 and the low-byte 8 bits. This
counter is responsible for pointing a location in order to fetch an instruction for kernel circuit. Normally, the program
counter is automatically incremented with each instruction during program execution.
Besides, it can be replaced with specific address by executing CALL or JMP instruction. When JMP or CALL instruction
is executed, the destination address will be inserted to bit 0 ~ bit 12.
PC
After
reset
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9
PC12 PC11 PC10 PC9
-
-
-
0
0
0
0
Bit 8
PC8
Bit 7
PC7
Bit 6
PC6
Bit 5
PC5
Bit 4
PC4
Bit 3
PC3
Bit 2
PC2
Bit 1
PC1
Bit 0
PC0
0
0
0
0
0
0
0
0
0
PCH
)
PCL
ONE ADDRESS SKIPPING
There are nine instructions (CMPRS, INCS, INCMS, DECS, DECMS, BTS0, BTS1, B0BTS0, B0BTS1) with one
address skipping function. If the result of these instructions is true, the PC will add 2 steps to skip next instruction.
If the condition of bit test instruction is true, the PC will add 2 steps to skip next instruction.
FC
C0STEP
; To skip, if Carry_flag = 1
; Else jump to C0STEP.
C0STEP:
B0BTS1
JMP
…
…
NOP
A, BUF0
FZ
C1STEP
; Move BUF0 value to ACC.
; To skip, if Zero flag = 0.
; Else jump to C1STEP.
C1STEP:
B0MOV
B0BTS0
JMP
…
…
NOP
If the ACC is equal to the immediate data or memory, the PC will add 2 steps to skip next instruction.
C0STEP:
CMPRS
JMP
…
…
NOP
A, #12H
C0STEP
SONiX TECHNOLOGY CO., LTD
; To skip, if ACC = 12H.
; Else jump to C0STEP.
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Version 1.4
SN8P2608
8-Bit Micro-Controller
If the destination increased by 1, which results overflow of 0xFF to 0x00, the PC will add 2 steps to skip next
instruction.
INCS instruction:
C0STEP:
INCS
JMP
…
…
NOP
BUF0
C0STEP
; Jump to C0STEP if ACC is not zero.
INCMS
JMP
…
…
NOP
BUF0
C0STEP
; Jump to C0STEP if BUF0 is not zero.
INCMS instruction:
C0STEP:
If the destination decreased by 1, which results underflow of 0x00 to 0xFF, the PC will add 2 steps to skip next
instruction.
DECS instruction:
C0STEP:
DECS
JMP
…
…
NOP
BUF0
C0STEP
; Jump to C0STEP if ACC is not zero.
DECMS
JMP
…
…
NOP
BUF0
C0STEP
; Jump to C0STEP if BUF0 is not zero.
DECMS instruction:
C0STEP:
SONiX TECHNOLOGY CO., LTD
Page 29
Version 1.4
SN8P2608
8-Bit Micro-Controller
)
MULTI-ADDRESS JUMPING
Users can jump around the multi-address by either JMP instruction or ADD M, A instruction (M = PCL) to activate
multi-address jumping function. Program Counter supports “ADD M,A”, ”ADC M,A” and “B0ADD M,A” instructions
for carry to PCH when PCL overflow automatically. For jump table or others applications, users can calculate PC value
by the three instructions and don’t care PCL overflow problem.
’
Note: PCH only support PC up counting result and doesn’t support PC down counting. When PCL is
carry after PCL+ACC, PCH adds one automatically. If PCL borrow after PCL–ACC, PCH keeps value and
not change.
¾
Example: If PC = 0323H (PCH = 03H, PCL = 23H)
; PC = 0323H
MOV
B0MOV
…
A, #28H
PCL, A
; Jump to address 0328H
MOV
B0MOV
…
A, #00H
PCL, A
; Jump to address 0300H
; PC = 0328H
¾
Example: If PC = 0323H (PCH = 03H, PCL = 23H)
; PC = 0323H
B0ADD
JMP
JMP
JMP
JMP
…
…
PCL, A
A0POINT
A1POINT
A2POINT
A3POINT
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; PCL = PCL + ACC, the PCH cannot be changed.
; If ACC = 0, jump to A0POINT
; ACC = 1, jump to A1POINT
; ACC = 2, jump to A2POINT
; ACC = 3, jump to A3POINT
Page 30
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.4.6
H, L REGISTERS
The H and L registers are the 8-bit buffers. There are two major functions of these registers.
z
z
can be used as general working registers
can be used as RAM data pointers with @HL register
081H
H
Read/Write
After reset
Bit 7
HBIT7
R/W
X
Bit 6
HBIT6
R/W
X
Bit 5
HBIT5
R/W
X
Bit 4
HBIT4
R/W
X
Bit 3
HBIT3
R/W
X
Bit 2
HBIT2
R/W
X
Bit 1
HBIT1
R/W
X
Bit 0
HBIT0
R/W
X
080H
L
Read/Write
After reset
Bit 7
LBIT7
R/W
X
Bit 6
LBIT6
R/W
X
Bit 5
LBIT5
R/W
X
Bit 4
LBIT4
R/W
X
Bit 3
LBIT3
R/W
X
Bit 2
LBIT2
R/W
X
Bit 1
LBIT1
R/W
X
Bit 0
LBIT0
R/W
X
Example: If want to read a data from RAM address 20H of bank_0, it can use indirectly addressing mode to
access data as following.
B0MOV
B0MOV
B0MOV
H, #00H
L, #20H
A, @HL
; To set RAM bank 0 for H register
; To set location 20H for L register
; To read a data into ACC
Example: Clear general-purpose data memory area of bank 0 using @HL register.
CLR
B0MOV
H
L, #07FH
; H = 0, bank 0
; L = 7FH, the last address of the data memory area
CLR
DECMS
JMP
@HL
L
CLR_HL_BUF
; Clear @HL to be zero
; L – 1, if L = 0, finish the routine
; Not zero
CLR
@HL
CLR_HL_BUF:
END_CLR:
; End of clear general purpose data memory area of bank 0
…
…
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Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.4.7
Y, Z REGISTERS
The Y and Z registers are the 8-bit buffers. There are three major functions of these registers.
z
can be used as general working registers
z
can be used as RAM data pointers with @YZ register
z
can be used as ROM data pointer with the MOVC instruction for look-up table
084H
Y
Read/Write
After reset
Bit 7
YBIT7
R/W
-
Bit 6
YBIT6
R/W
-
Bit 5
YBIT5
R/W
-
Bit 4
YBIT4
R/W
-
Bit 3
YBIT3
R/W
-
Bit 2
YBIT2
R/W
-
Bit 1
YBIT1
R/W
-
Bit 0
YBIT0
R/W
-
083H
Z
Read/Write
After reset
Bit 7
ZBIT7
R/W
-
Bit 6
ZBIT6
R/W
-
Bit 5
ZBIT5
R/W
-
Bit 4
ZBIT4
R/W
-
Bit 3
ZBIT3
R/W
-
Bit 2
ZBIT2
R/W
-
Bit 1
ZBIT1
R/W
-
Bit 0
ZBIT0
R/W
-
Example: Uses Y, Z register as the data pointer to access data in the RAM address 025H of bank0.
B0MOV
B0MOV
B0MOV
Y, #00H
Z, #25H
A, @YZ
; To set RAM bank 0 for Y register
; To set location 25H for Z register
; To read a data into ACC
Example: Uses the Y, Z register as data pointer to clear the RAM data.
B0MOV
B0MOV
Y, #0
Z, #07FH
; Y = 0, bank 0
; Z = 7FH, the last address of the data memory area
CLR
@YZ
; Clear @YZ to be zero
DECMS
JMP
Z
CLR_YZ_BUF
; Z – 1, if Z= 0, finish the routine
; Not zero
CLR
@YZ
CLR_YZ_BUF:
END_CLR:
; End of clear general purpose data memory area of bank 0
…
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Page 32
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.1.4.8
R REGISTERS
R register is an 8-bit buffer. There are two major functions of the register.
z
Can be used as working register
z
For store high-byte data of look-up table
(MOVC instruction executed, the high-byte data of specified ROM address will be stored in R register and the
low-byte data will be stored in ACC).
082H
R
Read/Write
After reset
’
Bit 7
RBIT7
R/W
-
Bit 6
RBIT6
R/W
-
Bit 5
RBIT5
R/W
-
Bit 4
RBIT4
R/W
-
Bit 3
RBIT3
R/W
-
Bit 2
RBIT2
R/W
-
Bit 1
RBIT1
R/W
-
Bit 0
RBIT0
R/W
-
Note: Please refer to the “LOOK-UP TABLE DESCRIPTION” about R register look-up table application.
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Version 1.4
SN8P2608
8-Bit Micro-Controller
2.2 ADDRESSING MODE
2.2.1 IMMEDIATE ADDRESSING MODE
The immediate addressing mode uses an immediate data to set up the location in ACC or specific RAM.
¾
Example: Move the immediate data 12H to ACC.
MOV
¾
; To set an immediate data 12H into ACC.
Example: Move the immediate data 12H to R register.
B0MOV
’
A, #12H
R, #12H
; To set an immediate data 12H into R register.
Note: In immediate addressing mode application, the specific RAM must be 0x80~0x87 working register.
2.2.2 DIRECTLY ADDRESSING MODE
The directly addressing mode moves the content of RAM location in or out of ACC.
¾
Example: Move 0x12 RAM location data into ACC.
B0MOV
¾
A, 12H
; To get a content of RAM location 0x12 of bank 0 and save in
ACC.
Example: Move ACC data into 0x12 RAM location.
B0MOV
12H, A
; To get a content of ACC and save in RAM location 12H of
bank 0.
2.2.3 INDIRECTLY ADDRESSING MODE
The indirectly addressing mode is to access the memory by the data pointer registers (H/L, Y/Z).
¾
Example: Indirectly addressing mode with @HL register
B0MOV
B0MOV
B0MOV
¾
H, #0
L, #12H
A, @HL
; To clear H register to access RAM bank 0.
; To set an immediate data 12H into L register.
; Use data pointer @HL reads a data from RAM location
; 012H into ACC.
Example: Indirectly addressing mode with @YZ register
B0MOV
B0MOV
B0MOV
Y, #0
Z, #12H
A, @YZ
SONiX TECHNOLOGY CO., LTD
; To clear Y register to access RAM bank 0.
; To set an immediate data 12H into Z register.
; Use data pointer @YZ reads a data from RAM location
; 012H into ACC.
Page 34
Version 1.4
SN8P2608
8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 35
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.3 STACK OPERATION
2.3.1
OVERVIEW
The stack buffer has 8-level. These buffers are designed to push and pop up program counter’s (PC) data when
interrupt service routine and “CALL” instruction are executed. The STKP register is a pointer designed to point active
level in order to push or pop up data from stack buffer. The STKnH and STKnL are the stack buffers to store program
counter (PC) data.
RET /
RETI
STKP + 1
CALL /
INTERRUPT
STKP - 1
PCH
PCL
STACK Level
STACK Buffer
High Byte
STACK Buffer
Low Byte
STKP = 7
STK7H
STK7L
STKP = 6
STK6H
STK6L
STKP = 5
STK5H
STKP
STK5L
STKP
STKP = 4
STK4H
STK4L
STKP = 3
STK3H
STK3L
STKP = 2
STK2H
STK2L
STKP = 1
STK1H
STK1L
STKP = 0
STK0H
STK0L
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Page 36
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.3.2
STACK REGISTERS
The stack pointer (STKP) is a 3-bit register to store the address used to access the stack buffer, 13-bit data memory
(STKnH and STKnL) set aside for temporary storage of stack addresses.
The two stack operations are writing to the top of the stack (push) and reading from the top of stack (pop). Push
operation decrements the STKP and the pop operation increments each time. That makes the STKP always point to
the top address of stack buffer and write the last program counter value (PC) into the stack buffer.
The program counter (PC) value is stored in the stack buffer before a CALL instruction executed or during interrupt
service routine. Stack operation is a LIFO type (Last in and first out). The stack pointer (STKP) and stack buffer
(STKnH and STKnL) are located in the system register area bank 0.
0DFH
STKP
Read/Write
After reset
Bit 7
GIE
R/W
0
Bit 6
-
Bit 5
-
Bit 4
-
Bit[2:0]
STKPBn: Stack pointer (n = 0 ~ 2)
Bit 7
GIE: Global interrupt control bit.
0 = Disable.
1 = Enable. Please refer to the interrupt chapter.
¾
Bit 3
-
Bit 2
STKPB2
R/W
1
Bit 1
STKPB1
R/W
1
Bit 0
STKPB0
R/W
1
Example: Stack pointer (STKP) reset, we strongly recommended to clear the stack pointers in the
beginning of the program.
MOV
B0MOV
A, #00000111B
STKP, A
0F0H~0FFH
STKnH
Read/Write
After reset
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
SnPC12
R/W
0
Bit 3
SnPC11
R/W
0
Bit 2
SnPC10
R/W
0
Bit 1
SnPC9
R/W
0
Bit 0
SnPC8
R/W
0
0F0H~0FFH
STKnL
Read/Write
After reset
Bit 7
SnPC7
R/W
0
Bit 6
SnPC6
R/W
0
Bit 5
SnPC5
R/W
0
Bit 4
SnPC4
R/W
0
Bit 3
SnPC3
R/W
0
Bit 2
SnPC2
R/W
0
Bit 1
SnPC1
R/W
0
Bit 0
SnPC0
R/W
0
STKn = STKnH , STKnL (n = 7 ~ 0)
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Page 37
Version 1.4
SN8P2608
8-Bit Micro-Controller
2.3.3
STACK OPERATION EXAMPLE
The two kinds of Stack-Save operations refer to the stack pointer (STKP) and write the content of program counter (PC)
to the stack buffer are CALL instruction and interrupt service. Under each condition, the STKP decreases and points to
the next available stack location. The stack buffer stores the program counter about the op-code address. The
Stack-Save operation is as the following table.
Stack Level
0
1
2
3
4
5
6
7
8
>8
STKPB2
STKP Register
STKPB1
STKPB0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
Stack Buffer
High Byte Low Byte
Free
STK0H
STK1H
STK2H
STK3H
STK4H
STK5H
STK6H
STK7H
-
Free
STK0L
STK1L
STK2L
STK3L
STK4L
STK5L
STK6L
STK7L
-
Description
Stack Over, error
There are Stack-Restore operations correspond to each push operation to restore the program counter (PC). The RETI
instruction uses for interrupt service routine. The RET instruction is for CALL instruction. When a pop operation occurs,
the STKP is incremented and points to the next free stack location. The stack buffer restores the last program counter
(PC) to the program counter registers. The Stack-Restore operation is as the following table.
Stack Level
8
7
6
5
4
3
2
1
0
STKP Register
STKPB2
STKPB1
STKPB0
1
0
0
0
0
1
1
1
1
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1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
Stack Buffer
High Byte Low Byte
STK7H
STK6H
STK5H
STK4H
STK3H
STK2H
STK1H
STK0H
Free
Page 38
STK7L
STK6L
STK5L
STK4L
STK3L
STK2L
STK1L
STK0L
Free
Description
-
Version 1.4
SN8P2608
8-Bit Micro-Controller
3
RESET
3.1 OVERVIEW
The system would be reset in three conditions as following.
z
z
z
z
Power on reset
Watchdog reset
Brown out reset
External reset (only supports external reset pin enable situation)
When any reset condition occurs, all system registers keep initial status, program stops and program counter is cleared.
After reset status released, the system boots up and program starts to execute from ORG 0. The NT0, NPD flags
indicate system reset status. The system can depend on NT0, NPD status and go to different paths by program.
086H
PFLAG
Read/Write
After reset
Bit [7:6]
Bit 7
NT0
R/W
-
Bit 6
NPD
R/W
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
C
R/W
0
Bit 1
DC
R/W
0
Bit 0
Z
R/W
0
NT0, NPD: Reset status flag.
NT0
0
0
1
1
NPD
0
1
0
1
Condition
Watchdog reset
Reserved
Power on reset and LVD reset.
External reset
Description
Watchdog timer overflow.
Power voltage is lower than LVD detecting level.
External reset pin detect low level status.
Finishing any reset sequence needs some time. The system provides complete procedures to make the power on reset
successful. For different oscillator types, the reset time is different. That causes the VDD rise rate and start-up time of
different oscillator is not fixed. RC type oscillator’s start-up time is very short, but the crystal type is longer. Under client
terminal application, users have to take care the power on reset time for the master terminal requirement. The reset
timing diagram is as following.
VDD
Power
LVD Detect Level
VSS
VDD
External Reset
VSS
External Reset
Low Detect
External Reset
High Detect
Watchdog
Overflow
Watchdog Normal Run
Watchdog Reset
Watchdog Stop
System Normal Run
System Status
System Stop
Power On
Delay Time
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External
Reset Delay
Time
Page 39
Watchdog
Reset Delay
Time
Version 1.4
SN8P2608
8-Bit Micro-Controller
3.2 POWER ON RESET
The power on reset depend no LVD operation for most power-up situations. The power supplying to system is a rising
curve and needs some time to achieve the normal voltage. Power on reset sequence is as following.
z
z
z
z
z
Power-up: System detects the power voltage up and waits for power stable.
External reset (only external reset pin enable): System checks external reset pin status. If external reset pin is
not high level, the system keeps reset status and waits external reset pin released.
System initialization: All system registers is set as initial conditions and system is ready.
Oscillator warm up: Oscillator operation is successfully and supply to system clock.
Program executing: Power on sequence is finished and program executes from ORG 0.
3.3 WATCHDOG RESET
Watchdog reset is a system protection. In normal condition, system works well and clears watchdog timer by program.
Under error condition, system is in unknown situation and watchdog can’t be clear by program before watchdog timer
overflow. Watchdog timer overflow occurs and the system is reset. After watchdog reset, the system restarts and
returns normal mode. Watchdog reset sequence is as following.
z
z
z
z
Watchdog timer status: System checks watchdog timer overflow status. If watchdog timer overflow occurs, the
system is reset.
System initialization: All system registers is set as initial conditions and system is ready.
Oscillator warm up: Oscillator operation is successfully and supply to system clock.
Program executing: Power on sequence is finished and program executes from ORG 0.
Watchdog reset is a system protection. In normal condition, system works well and clears watchdog timer by program.
Under error condition, system is in unknown situation and watchdog can’t be clear by program before watchdog timer
overflow. Watchdog timer overflow occurs and the system is reset. After watchdog reset, the system restarts and
returns normal mode. Watchdog reset sequence is as following.
z
z
z
z
Watchdog timer status: System checks watchdog timer overflow status. If watchdog timer overflow occurs, the
system is reset.
System initialization: All system registers is set as initial conditions and system is ready.
Oscillator warm up: Oscillator operation is successfully and supply to system clock.
Program executing: Power on sequence is finished and program executes from ORG 0.
Watchdog timer application note is as following.
z
z
z
Before clearing watchdog timer, check I/O status and check RAM contents can improve system error.
Don’t clear watchdog timer in interrupt vector and interrupt service routine. That can improve main routine fail.
Clearing watchdog timer program is only at one part of the program. This way is the best structure to enhance the
watchdog timer function.
’
Note: Please refer to the “WATCHDOG TIMER” about watchdog timer detail information.
SONiX TECHNOLOGY CO., LTD
Page 40
Version 1.4
SN8P2608
8-Bit Micro-Controller
3.4 BROWN OUT RESET
3.4.1 BROWN OUT DESCRIPTION
The brown out reset is a power dropping condition. The power drops from normal voltage to low voltage by external
factors (e.g. EFT interference or external loading changed). The brown out reset would make the system not work well
or executing program error.
VDD
System Work
Well Area
V1
V2
V3
System Work
Error Area
VSS
Brown Out Reset Diagram
The power dropping might through the voltage range that’s the system dead-band. The dead-band means the power
range can’t offer the system minimum operation power requirement. The above diagram is a typical brown out reset
diagram. There is a serious noise under the VDD, and VDD voltage drops very deep. There is a dotted line to separate
the system working area. The above area is the system work well area. The below area is the system work error area
called dead-band. V1 doesn’t touch the below area and not effect the system operation. But the V2 and V3 is under the
below area and may induce the system error occurrence. Let system under dead-band includes some conditions.
DC application:
The power source of DC application is usually using battery. When low battery condition and MCU drive any loading,
the power drops and keeps in dead-band. Under the situation, the power won’t drop deeper and not touch the system
reset voltage. That makes the system under dead-band.
AC application:
In AC power application, the DC power is regulated from AC power source. This kind of power usually couples with AC
noise that makes the DC power dirty. Or the external loading is very heavy, e.g. driving motor. The loading operating
induces noise and overlaps with the DC power. VDD drops by the noise, and the system works under unstable power
situation.
The power on duration and power down duration are longer in AC application. The system power on sequence protects
the power on successful, but the power down situation is like DC low battery condition. When turn off the AC power,
the VDD drops slowly and through the dead-band for a while.
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Page 41
Version 1.4
SN8P2608
8-Bit Micro-Controller
3.4.2 THE SYSTEM OPERATING VOLTAGE DECSRIPTION
To improve the brown out reset needs to know the system minimum operating voltage which is depend on the system
executing rate and power level. Different system executing rates have different system minimum operating voltage.
The electrical characteristic section shows the system voltage to executing rate relationship.
System Mini.
Operating Voltage.
Vdd (V)
Normal Operating
Area
Dead-Band Area
Reset Area
System Reset
Voltage.
System Rate (Fcpu)
Normally the system operation voltage area is higher than the system reset voltage to VDD, and the reset voltage is
decided by LVD detect level. The system minimum operating voltage rises when the system executing rate upper even
higher than system reset voltage. The dead-band definition is the system minimum operating voltage above the system
reset voltage.
3.4.3 BROWN OUT RESET IMPROVEMENT
How to improve the brown reset condition? There are some methods to improve brown out reset as following.
z
z
z
z
LVD reset
Watchdog reset
Reduce the system executing rate
External reset circuit. (Zener diode reset circuit, Voltage bias reset circuit, External reset IC)
’
Note:
1. The “ Zener diode reset circuit”, “Voltage bias reset circuit” and “External reset IC” can
completely improve the brown out reset, DC low battery and AC slow power down conditions.
2. For AC power application and enhance EFT performance, the system clock is 4MHz/4 (1 mips)
and use external reset (“ Zener diode reset circuit”, “Voltage bias reset circuit”, “External reset
IC”). The structure can improve noise effective and get good EFT characteristic.
SONiX TECHNOLOGY CO., LTD
Page 42
Version 1.4
SN8P2608
8-Bit Micro-Controller
LVD reset:
VDD
Power
LVD Detect Voltage
VSS
Power is below LVD Detect
Voltage and System Reset.
System Normal Run
System Status
System Stop
Power On
Delay Time
The LVD (low voltage detector) is built-in Sonix 8-bit MCU to be brown out reset protection. When the VDD drops and
is below LVD detect voltage, the LVD would be triggered, and the system is reset. The LVD detect level is different by
each MCU. The LVD voltage level is a point of voltage and not easy to cover all dead-band range. Using LVD to
improve brown out reset is depend on application requirement and environment. If the power variation is very deep,
violent and trigger the LVD, the LVD can be the protection. If the power variation can touch the LVD detect level and
make system work error, the LVD can’t be the protection and need to other reset methods. More detail LVD information
is in the electrical characteristic section.
Watchdog reset:
The watchdog timer is a protection to make sure the system executes well. Normally the watchdog timer would be clear
at one point of program. Don’t clear the watchdog timer in several addresses. The system executes normally and the
watchdog won’t reset system. When the system is under dead-band and the execution error, the watchdog timer can’t
be clear by program. The watchdog is continuously counting until overflow occurrence. The overflow signal of
watchdog timer triggers the system to reset, and the system return to normal mode after reset sequence. This method
also can improve brown out reset condition and make sure the system to return normal mode.
If the system reset by watchdog and the power is still in dead-band, the system reset sequence won’t be successful
and the system stays in reset status until the power return to normal range.
Reduce the system executing rate:
If the system rate is fast and the dead-band exists, to reduce the system executing rate can improve the dead-band.
The lower system rate is with lower minimum operating voltage. Select the power voltage that’s no dead-band issue
and find out the mapping system rate. Adjust the system rate to the value and the system exits the dead-band issue.
This way needs to modify whole program timing to fit the application requirement.
External reset circuit:
The external reset methods also can improve brown out reset and is the complete solution. There are three external
reset circuits to improve brown out reset including “Zener diode reset circuit”, “Voltage bias reset circuit” and “External
reset IC”. These three reset structures use external reset signal and control to make sure the MCU be reset under
power dropping and under dead-band. The external reset information is described in the next section.
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3.5 EXTERNAL RESET
External reset function is controlled by “Reset_Pin” code option. Set the code option as “Reset” option to enable
external reset function. External reset pin is Schmitt Trigger structure and low level active. The system is running when
reset pin is high level voltage input. The reset pin receives the low voltage and the system is reset. The external reset
operation actives in power on and normal running mode. During system power-up, the external reset pin must be high
level input, or the system keeps in reset status. External reset sequence is as following.
z
z
z
z
External reset (only external reset pin enable): System checks external reset pin status. If external reset pin is
not high level, the system keeps reset status and waits external reset pin released.
System initialization: All system registers is set as initial conditions and system is ready.
Oscillator warm up: Oscillator operation is successfully and supply to system clock.
Program executing: Power on sequence is finished and program executes from ORG 0.
The external reset can reset the system during power on duration, and good external reset circuit can protect the
system to avoid working at unusual power condition, e.g. brown out reset in AC power application…
3.6 EXTERNAL RESET CIRCUIT
3.6.1 Simply RC Reset Circuit
VDD
R1
47K ohm
R2
RST
100 ohm
MCU
C1
0.1uF
VSS
VCC
GND
This is the basic reset circuit, and only includes R1 and C1. The RC circuit operation makes a slow rising signal into
reset pin as power up. The reset signal is slower than VDD power up timing, and system occurs a power on signal from
the timing difference.
’
Note: The reset circuit is no any protection against unusual power or brown out reset.
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3.6.2 Diode & RC Reset Circuit
VDD
R1
47K ohm
DIODE
R2
RST
MCU
100 ohm
C1
0.1uF
VSS
VCC
GND
This is the better reset circuit. The R1 and C1 circuit operation is like the simply reset circuit to make a power on signal.
The reset circuit has a simply protection against unusual power. The diode offers a power positive path to conduct
higher power to VDD. It is can make reset pin voltage level to synchronize with VDD voltage. The structure can
improve slight brown out reset condition.
’ Note: The R2 100 ohm resistor of “Simply reset circuit” and “Diode & RC reset circuit” is necessary to limit
any current flowing into reset pin from external capacitor C in the event of reset pin breakdown due
to Electrostatic Discharge (ESD) or Electrical Over-stress (EOS).
3.6.3 Zener Diode Reset Circuit
VDD
R1
33K ohm
E
R2
B
10K ohm
Vz
Q1
C
RST
MCU
R3
40K ohm
VSS
VCC
GND
The zener diode reset circuit is a simple low voltage detector and can improve brown out reset condition
completely. Use zener voltage to be the active level. When VDD voltage level is above “Vz + 0.7V”, the C terminal of
the PNP transistor outputs high voltage and MCU operates normally. When VDD is below “Vz + 0.7V”, the C terminal of
the PNP transistor outputs low voltage and MCU is in reset mode. Decide the reset detect voltage by zener
specification. Select the right zener voltage to conform the application.
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3.6.4 Voltage Bias Reset Circuit
VDD
R1
47K ohm
E
B
Q1
C
R2
10K ohm
RST
MCU
R3
2K ohm
VSS
VCC
GND
The voltage bias reset circuit is a low cost voltage detector and can improve brown out reset condition completely.
The operating voltage is not accurate as zener diode reset circuit. Use R1, R2 bias voltage to be the active level. When
VDD voltage level is above or equal to “0.7V x (R1 + R2) / R1”, the C terminal of the PNP transistor outputs high
voltage and MCU operates normally. When VDD is below “0.7V x (R1 + R2) / R1”, the C terminal of the PNP transistor
outputs low voltage and MCU is in reset mode.
Decide the reset detect voltage by R1, R2 resistances. Select the right R1, R2 value to conform the application. In the
circuit diagram condition, the MCU’s reset pin level varies with VDD voltage variation, and the differential voltage is
0.7V. If the VDD drops and the voltage lower than reset pin detect level, the system would be reset. If want to make the
reset active earlier, set the R2 > R1 and the cap between VDD and C terminal voltage is larger than 0.7V. The external
reset circuit is with a stable current through R1 and R2. For power consumption issue application, e.g. DC power
system, the current must be considered to whole system power consumption.
’
Note: Under unstable power condition as brown out reset, “Zener diode rest circuit” and “Voltage bias
reset circuit” can protects system no any error occurrence as power dropping. When power drops
below the reset detect voltage, the system reset would be triggered, and then system executes
reset sequence. That makes sure the system work well under unstable power situation.
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3.6.5 External Reset IC
VDD
VDD
Bypass
Capacitor
0.1uF
Reset
IC
RST
RST
MCU
VSS
VSS
VCC
GND
The external reset circuit also use external reset IC to enhance MCU reset performance. This is a high cost and good
effect solution. By different application and system requirement to select suitable reset IC. The reset circuit can
improve all power variation.
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4
SYSTEM CLOCK
4.1 OVERVIEW
The micro-controller is a dual clock system. There are high-speed clock and low-speed clock. The high-speed clock is
generated from the external oscillator circuit. The low-speed clock is generated from on-chip low-speed RC oscillator
circuit (ILRC 16KHz @3V, 32KHz @5V).
Both the high-speed clock and the low-speed clock can be system clock (Fosc). The system clock in slow mode is
divided by 4 to be the instruction cycle (Fcpu).
)
Normal Mode (High Clock):
Fcpu = Fhosc / N, N = 1 ~ 8, Select N by Fcpu code option.
)
Slow Mode (Low Clock):
Fcpu = Flosc/4.
SONIX provides a “Noise Filter” controlled by code option. In high noisy situation, the noise filter can isolate noise
outside and protect system works well. The minimum Fcpu of high clock is limited at Fhosc/4 when noise filter enable.
4.2 CLOCK BLOCK DIAGRAM
STPHX
XIN
XOUT
Fcpu Code Option
HOSC
Fhosc.
Fcpu = Fhosc/1 ~ Fhosc/8, Noise Filter Disable.
Fcpu = Fhosc/4 ~ Fhosc/8, Noise Filter Enable.
CLKMD
Fosc
Fcpu
Fosc
CPUM[1:0]
Flosc.
z
z
z
z
z
Fcpu = Flosc/4
HOSC: High_Clk code option.
Fhosc: External high-speed clock.
Flosc: Internal low-speed RC clock (about [email protected], [email protected]).
Fosc: System clock source.
Fcpu: Instruction cycle.
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4.3 OSCM REGISTER
The OSCM register is an oscillator control register. It controls oscillator status, system mode.
0CAH
OSCM
Read/Write
After reset
Bit 7
0
-
Bit 6
0
-
Bit 5
0
-
Bit 4
CPUM1
R/W
0
Bit 3
CPUM0
R/W
0
Bit 2
CLKMD
R/W
0
Bit 1
STPHX
R/W
0
Bit 0
0
-
Bit 1
STPHX: External high-speed oscillator control bit.
0 = External high-speed oscillator free run.
1 = External high-speed oscillator free run stop. Internal low-speed RC oscillator is still running.
Bit 2
CLKMD: System high/Low clock mode control bit.
0 = Normal (dual) mode. System clock is high clock.
1 = Slow mode. System clock is internal low clock.
Bit[4:3]
CPUM[1:0]: CPU operating mode control bits.
00 = normal.
01 = sleep (power down) mode.
10 = green mode.
11 = reserved.
¾
Example: Stop high-speed oscillator
B0BSET
¾
FSTPHX
; To stop external high-speed oscillator only.
Example: When entering the power down mode (sleep mode), both high-speed oscillator and internal
low-speed oscillator will be stopped.
B0BSET
FCPUM0
SONiX TECHNOLOGY CO., LTD
; To stop external high-speed oscillator and internal low-speed
; oscillator called power down mode (sleep mode).
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4.4 SYSTEM HIGH CLOCK
The system high clock is from external oscillator. The high clock type is controlled by “High_Clk” code option.
High_Clk Code Option
Description
RC
The high clock is external RC type oscillator. XOUT pin is general purpose I/O pin.
12M
4M
The high clock is external high speed oscillator. The typical frequency is 12MHz.
The high clock is external oscillator. The typical frequency is 4MHz.
4.4.1 EXTERNAL HIGH CLOCK
External high clock includes three modules (Crystal/Ceramic, RC and external clock signal). The high clock oscillator
module is controlled by High_Clk code option. The start up time of crystal/ceramic and RC type oscillator is different.
RC type oscillator’s start-up time is very short, but the crystal’s is longer. The oscillator start-up time decides reset time
length.
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4.4.1.1
CRYSTAL/CERAMIC
Crystal/Ceramic devices are driven by XIN, XOUT pins. For high/normal/low frequency, the driving currents are
different. High_Clk code option supports different frequencies. 12M option is for high speed (ex. 12MHz). 4M option is
for normal speed (ex. 4MHz).
XIN
CRYSTAL
C
20pF
XOUT
MCU
C
VDD
20pF
VSS
VCC
GND
’
Note: Connect the Crystal/Ceramic and C as near as possible to the XIN/XOUT/VSS pins of
micro-controller.
4.4.1.2
RC
Selecting RC oscillator is by RC option of High_Clk code option. RC type oscillator’s frequency is up to 10MHz. Using
“R” value is to change frequency. 50P~100P is good value for “C”. XOUT pin is general purpose I/O pin.
XOUT
XIN
C
R
MCU
VDD
VSS
VCC
GND
’
Note: Connect the R and C as near as possible to the VDD pin of micro-controller.
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4.4.1.3
EXTERNAL CLOCK SIGNAL
Selecting external clock signal input to be system clock is by RC option of High_Clk code option. The external clock
signal is input from XIN pin. XOUT pin is general purpose I/O pin.
External Clock Input
XIN
XOUT
MCU
VSS
VDD
VCC
GND
’
Note: The GND of external oscillator circuit must be as near as possible to VSS pin of micro-controller.
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4.5 SYSTEM LOW CLOCK
The system low clock source is the internal low-speed oscillator built in the micro-controller. The low-speed oscillator
uses RC type oscillator circuit. The frequency is affected by the voltage and temperature of the system. In common
condition, the frequency of the RC oscillator is about 16KHz at 3V and 32KHz at 5V. The relation between the RC
frequency and voltage is as the following figure.
Internal Low RC Frequency
45.00
40.80
Freq. (KHz)
40.00
38.08
35.00
35.40
32.52
30.00
29.20
25.96
25.00
ILRC
22.24
20.00
15.00
14.72
16.00 17.24
18.88
10.64
10.00
7.52
5.00
0.00
2.1 2.5
3
3.1 3.3 3.5
4
4.5
5
5.5
6
6.5
7
VDD (V)
The internal low RC supports watchdog clock source and system slow mode controlled by CLKMD.
)
Flosc = Internal low RC oscillator (about 16KHz @3V, 32KHz @5V).
)
Slow mode Fcpu = Flosc / 4
There are two conditions to stop internal low RC. One is power down mode, and the other is green mode of 32K mode
and watchdog disable. If system is in 32K mode and watchdog disable, only 32K oscillator actives and system is under
low power consumption.
¾
Example: Stop internal low-speed oscillator by power down mode.
B0BSET
’
FCPUM0
; To stop external high-speed oscillator and internal low-speed
; oscillator called power down mode (sleep mode).
Note: The internal low-speed clock can’t be turned off individually. It is controlled by CPUM0, CPUM1
(32K, watchdog disable) bits of OSCM register.
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4.5.1 SYSTEM CLOCK MEASUREMENT
Under design period, the users can measure system clock speed by software instruction cycle (Fcpu). This way is
useful in RC mode.
¾
Example: Fcpu instruction cycle of external oscillator.
B0BSET
P0M.0
; Set P0.0 to be output mode for outputting Fcpu toggle signal.
B0BSET
B0BCLR
JMP
P0.0
P0.0
@B
; Output Fcpu toggle signal in low-speed clock mode.
; Measure the Fcpu frequency by oscilloscope.
@@:
’
Note: Do not measure the RC frequency directly from XIN; the probe impendence will affect the RC
frequency.
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5
SYSTEM OPERATION MODE
5.1 OVERVIEW
The chip is featured with low power consumption by switching around four different modes as following.
z
z
z
z
Normal mode (High-speed mode)
Slow mode (Low-speed mode)
Power-down mode (Sleep mode)
Green mode
Power Down Mode
(Sleep Mode)
P0, P1 Wake-up Function Active.
External Reset Circuit Active.
CPUM1, CPUM0 = 01.
CLKMD = 1
Normal Mode
P0, P1 Wake-up Function Active.
T0 Timer Time Out.
External Reset Circuit Active.
Slow Mode
CLKMD = 0
CPUM1, CPUM0 = 10.
P0, P1 Wake-up Function Active.
T0 Timer Time Out.
Green Mode
External Reset Circuit
Active.
System Mode Switching Diagram
Operating mode description
MODE
NORMAL
SLOW
GREEN
EHOSC
ILRC
CPU instruction
T0 timer
TC1 timer
Running
By STPHX
By STPHX
Running
Running
Running
Executing
Executing
Stop
*Active
*Active
*Active
*Active
*Active
*Active
By Watch_Dog By Watch_Dog By Watch_Dog
Watchdog timer
Code option
Code option
Code option
Internal interrupt
All active
All active
T0, TC1
External interrupt
All active
All active
All active
P0, P1, T0
Wakeup source
Reset
POWER DOWN
(SLEEP)
Stop
Stop
Stop
Inactive
Inactive
By Watch_Dog
Code option
All inactive
All inactive
REMARK
* Active if T0ENB=1
* Active if TC1ENB=1
Refer to code option
description
P0, P1, Reset
EHOSC: External high clock
ILRC: Internal low clock (16K RC oscillator at 3V, 32K at 5V)
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5.2 SYSTEM MODE SWITCHING
¾
Example: Switch normal/slow mode to power down (sleep) mode.
B0BSET
FCPUM0
; Set CPUM0 = 1.
’
Note: During the sleep, only the wakeup pin and reset can wakeup the system back to the normal mode.
¾
Example: Switch normal mode to slow mode.
B0BSET
B0BSET
¾
;To set CLKMD = 1, Change the system into slow mode
;To stop external high-speed oscillator for power saving.
Example: Switch slow mode to normal mode (The external high-speed oscillator is still running)
B0BCLR
¾
FCLKMD
FSTPHX
FCLKMD
;To set CLKMD = 0
Example: Switch slow mode to normal mode (The external high-speed oscillator stops)
If external high clock stop and program want to switch back normal mode. It is necessary to delay at least 20ms for
external clock stable.
@@:
¾
B0BCLR
FSTPHX
; Turn on the external high-speed oscillator.
B0MOV
DECMS
JMP
Z, #54
Z
@B
; If VDD = 5V, internal RC=32KHz (typical) will delay
; 0.125ms X 162 = 20.25ms for external clock stable
B0BCLR
FCLKMD
; Change the system back to the normal mode
Example: Switch normal/slow mode to green mode.
B0BSET
’
FCPUM1
; Set CPUM1 = 1.
Note: If T0 timer wakeup function is disabled in the green mode, only the wakeup pin and reset pin can
wakeup the system backs to the previous operation mode.
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¾
Example: Switch normal/slow mode to Green mode and enable T0 wakeup function.
; Set T0 timer wakeup function.
B0BCLR
B0BCLR
MOV
B0MOV
MOV
B0MOV
FT0IEN
FT0ENB
A,#20H
T0M,A
A,#74H
T0C,A
; To disable T0 interrupt service
; To disable T0 timer
;
; To set T0 clock = Fcpu / 64
B0BCLR
B0BCLR
B0BSET
FT0IEN
FT0IRQ
FT0ENB
; To disable T0 interrupt service
; To clear T0 interrupt request
; To enable T0 timer
; Go into green mode
B0BCLR
B0BSET
FCPUM0
FCPUM1
;To set CPUMx = 10
’
; To set T0C initial value = 74H (To set T0 interval = 10 ms)
Note: During the green mode with T0 wake-up function, the wakeup pins, reset pin and T0 can wakeup
the system back to the last mode. T0 wake-up period is controlled by program and T0ENB must be set.
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5.3 WAKEUP
5.3.1 OVERVIEW
Under power down mode (sleep mode) or green mode, program doesn’t execute. The wakeup trigger can wake the
system up to normal mode or slow mode. The wakeup trigger sources are external trigger (P0, P1 level change) and
internal trigger (T0 timer overflow).
z
Power down mode is waked up to normal mode. The wakeup trigger is only external trigger (P0, P1 level change)
z
Green mode is waked up to last mode (normal mode or slow mode). The wakeup triggers are external trigger (P0,
P1 level change) and internal trigger (T0 timer overflow).
5.3.2 WAKEUP TIME
When the system is in power down mode (sleep mode), the high clock oscillator stops. When waked up from power
down mode, MCU waits for 2048 external high-speed oscillator clocks as the wakeup time to stable the oscillator circuit.
After the wakeup time, the system goes into the normal mode.
’
Note: Wakeup from green mode is no wakeup time because the clock doesn’t stop in green mode.
The value of the wakeup time is as the following.
The Wakeup time = 1/Fosc * 2048 (sec) + high clock start-up time
’
Note: The high clock start-up time is depended on the VDD and oscillator type of high clock.
Example: In power down mode (sleep mode), the system is waked up. After the wakeup time, the system goes
into normal mode. The wakeup time is as the following.
The wakeup time = 1/Fosc * 2048 = 0.512 ms (Fosc = 4MHz)
The total wakeup time = 0.512 ms + oscillator start-up time
5.3.3 P1W WAKEUP CONTROL REGISTER
Under power down mode (sleep mode) and green mode, the I/O ports with wakeup function are able to wake the
system up to normal mode. The Port 0 and Port 1 have wakeup function. Port 0 wakeup function always enables, but
the Port 1 is controlled by the P1W register.
0C0H
P1W
Read/Write
After reset
Bit[7:0]
Bit 7
P17W
W
0
Bit 6
P16W
W
0
Bit 5
P15W
W
0
Bit 4
P14W
W
0
Bit 3
P13W
W
0
Bit 2
P12W
W
0
Bit 1
P11W
W
0
Bit 0
P10W
W
0
P10W~P17W: Port 1 wakeup function control bits.
0 = Disable P1n wakeup function.
1 = Enable P1n wakeup function.
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6
INTERRUPT
6.1 OVERVIEW
This MCU provides three interrupt sources, including two internal interrupt (T0/TC1) and two external interrupt (INT0,
INT1). The external interrupt can wakeup the chip while the system is switched from power down mode to high-speed
normal mode. Once interrupt service is executed, the GIE bit in STKP register will clear to “0” for stopping other
interrupt request. On the contrast, when interrupt service exits, the GIE bit will set to “1” to accept the next interrupts’
request. All of the interrupt request signals are stored in INTRQ register.
INTEN Interrupt Enable Register
INT0 Trigger
INT1 Trigger
T0 Time Out
TC1 Time Out
’
P00IRQ
INTRQ
4-Bit
Latchs
P01IRQ
Interrupt
T0IRQ
Enable
TC1IRQ
Gating
Interrupt Vector Address (0008H)
Global Interrupt Request Signal
Note: The GIE bit must enable during all interrupt operation.
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6.2 INTEN INTERRUPT ENABLE REGISTER
INTEN is the interrupt request control register including one internal interrupts, one external interrupts enable control
bits. One of the register to be set “1” is to enable the interrupt request function. Once of the interrupt occur, the stack is
incremented and program jump to ORG 8 to execute interrupt service routines. The program exits the interrupt service
routine when the returning interrupt service routine instruction (RETI) is executed.
0C9H
INTEN
Read/Write
After reset
Bit 7
-
Bit 6
TC1IEN
R/W
0
Bit 5
-
Bit 4
T0IEN
R/W
0
Bit 0
P00IEN: External P0.0 interrupt (INT0) control bit.
0 = Disable INT0 interrupt function.
1 = Enable INT0 interrupt function.
Bit 1
P01IEN: External P0.1 interrupt (INT1) control bit.
0 = Disable INT1 interrupt function.
1 = Enable INT1 interrupt function.
Bit 4
T0IEN: T0 timer interrupt control bit.
0 = Disable T0 interrupt function.
1 = Enable T0 interrupt function.
Bit 6
TC1IEN: TC1 timer interrupt control bit.
0 = Disable TC1 interrupt function.
1 = Enable TC1 interrupt function.
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Bit 3
-
Bit 2
-
Bit 1
P01IEN
R/W
0
Bit 0
P00IEN
R/W
0
Version 1.4
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8-Bit Micro-Controller
6.3 INTRQ INTERRUPT REQUEST REGISTER
INTRQ is the interrupt request flag register. The register includes all interrupt request indication flags. Each one of the
interrupt requests occurs, the bit of the INTRQ register would be set “1”. The INTRQ value needs to be clear by
programming after detecting the flag. In the interrupt vector of program, users know the any interrupt requests
occurring by the register and do the routine corresponding of the interrupt request.
0C8H
INTRQ
Read/Write
After reset
Bit 7
-
Bit 6
TC1IRQ
R/W
0
Bit 5
-
Bit 4
T0IRQ
R/W
0
Bit 0
P00IRQ: External P0.0 interrupt (INT0) request flag.
0 = None INT0 interrupt request.
1 = INT0 interrupt request.
Bit 1
P01IRQ: External P0.1 interrupt (INT1) request flag.
0 = None INT1 interrupt request.
1 = INT1 interrupt request.
Bit 4
T0IRQ: T0 timer interrupt request flag.
0 = None T0 interrupt request.
1 = T0 interrupt request.
Bit 6
TC1IRQ: TC1 timer interrupt request flag.
0 = None TC1 interrupt request.
1 = TC1 interrupt request.
Bit 3
-
Bit 2
-
Bit 1
P01IRQ
R/W
0
Bit 0
P00IRQ
R/W
0
6.4 GIE GLOBAL INTERRUPT OPERATION
GIE is the global interrupt control bit. All interrupts start work after the GIE = 1 It is necessary for interrupt service
request. One of the interrupt requests occurs, and the program counter (PC) points to the interrupt vector (ORG 8) and
the stack add 1 level.
0DFH
STKP
Read/Write
After reset
Bit 7
¾
Bit 7
GIE
R/W
0
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
STKPB2
R/W
1
Bit 1
STKPB1
R/W
1
Bit 0
STKPB0
R/W
1
GIE: Global interrupt control bit.
0 = Disable global interrupt.
1 = Enable global interrupt.
Example: Set global interrupt control bit (GIE).
B0BSET
’
Bit 6
-
FGIE
; Enable GIE
Note: The GIE bit must enable during all interrupt operation.
SONiX TECHNOLOGY CO., LTD
Page 61
Version 1.4
SN8P2608
8-Bit Micro-Controller
6.5 PUSH, POP ROUTINE
When any interrupt occurs, system will jump to ORG 8 and execute interrupt service routine. It is necessary to save
ACC, PFLAG data. The chip includes “PUSH”, “POP” for in/out interrupt service routine. The two instruction save and
load ACC, PFLAG data into buffers and avoid main routine error after interrupt service routine finishing.
¾
Note: ”PUSH”, “POP” instructions save and load ACC/PFLAG without (NT0, NPD). PUSH/POP buffer is
an unique buffer and only one level.
Example: Store ACC and PAFLG data by PUSH, POP instructions when interrupt service routine executed.
ORG
JMP
0
START
ORG
JMP
8
INT_SERVICE
ORG
10H
START:
…
INT_SERVICE:
PUSH
…
…
POP
; Save ACC and PFLAG to buffers.
RETI
…
ENDP
; Exit interrupt service vector
SONiX TECHNOLOGY CO., LTD
; Load ACC and PFLAG from buffers.
Page 62
Version 1.4
SN8P2608
8-Bit Micro-Controller
6.6 INT0 (P0.0) INTERRUPT OPERATION
When the INT0 trigger occurs, the P00IRQ will be set to “1” no matter the P00IEN is enable or disable. If the P00IEN =
1 and the trigger event P00IRQ is also set to be “1”. As the result, the system will execute the interrupt vector (ORG
8). If the P00IEN = 0 and the trigger event P00IRQ is still set to be “1”. Moreover, the system won’t execute interrupt
vector even when the P00IRQ is set to be “1”. Users need to be cautious with the operation under multi-interrupt
situation.
’
Note: The interrupt trigger direction of P0.0 is control by PEDGE register.
0BFH
PEDGE
Read/Write
After reset
Bit[4:3]
¾
¾
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
P00G1
R/W
1
Bit 3
P00G0
R/W
0
Bit 2
-
Bit 1
-
Bit 0
-
P00G[1:0]: P0.0 interrupt trigger edge control bits.
00 = reserved.
01 = rising edge.
10 = falling edge.
11 = rising/falling bi-direction (Level change trigger).
Example: Setup INT0 interrupt request and bi-direction edge trigger.
MOV
B0MOV
A, #18H
PEDGE, A
; Set INT0 interrupt trigger as bi-direction edge.
B0BSET
B0BCLR
B0BSET
FP00IEN
FP00IRQ
FGIE
; Enable INT0 interrupt service
; Clear INT0 interrupt request flag
; Enable GIE
Example: INT0 interrupt service routine.
ORG
JMP
8
INT_SERVICE
; Interrupt vector
INT_SERVICE:
…
; Push routine to save ACC and PFLAG to buffers.
B0BTS1
JMP
FP00IRQ
EXIT_INT
; Check P00IRQ
; P00IRQ = 0, exit interrupt vector
B0BCLR
…
…
FP00IRQ
; Reset P00IRQ
; INT0 interrupt service routine
EXIT_INT:
…
; Pop routine to load ACC and PFLAG from buffers.
RETI
; Exit interrupt vector
SONiX TECHNOLOGY CO., LTD
Page 63
Version 1.4
SN8P2608
8-Bit Micro-Controller
6.7 INT1 (P0.1) INTERRUPT OPERATION
When the INT1 trigger occurs, the P01IRQ will be set to “1” no matter the P01IEN is enable or disable. If the P01IEN =
1 and the trigger event P01IRQ is also set to be “1”. As the result, the system will execute the interrupt vector (ORG
8). If the P01IEN = 0 and the trigger event P01IRQ is still set to be “1”. Moreover, the system won’t execute interrupt
vector even when the P01IRQ is set to be “1”. Users need to be cautious with the operation under multi-interrupt
situation.
’
Note: The interrupt trigger direction of P0.1 is falling edge.
Example: INT1 interrupt request setup.
B0BSET
B0BCLR
B0BSET
FP01IEN
FP01IRQ
FGIE
; Enable INT1 interrupt service
; Clear INT1 interrupt request flag
; Enable GIE
Example: INT1 interrupt service routine.
ORG
JMP
8
INT_SERVICE
; Interrupt vector
INT_SERVICE:
…
; Push routine to save ACC and PFLAG to buffers.
B0BTS1
JMP
FP01IRQ
EXIT_INT
; Check P01IRQ
; P01IRQ = 0, exit interrupt vector
B0BCLR
…
…
FP01IRQ
; Reset P01IRQ
; INT1 interrupt service routine
EXIT_INT:
…
; Pop routine to load ACC and PFLAG from buffers.
RETI
; Exit interrupt vector
SONiX TECHNOLOGY CO., LTD
Page 64
Version 1.4
SN8P2608
8-Bit Micro-Controller
6.8 T0 INTERRUPT OPERATION
When the T0C counter occurs overflow, the T0IRQ will be set to “1” however the T0IEN is enable or disable. If the
T0IEN = 1, the trigger event will make the T0IRQ to be “1” and the system enter interrupt vector. If the T0IEN = 0, the
trigger event will make the T0IRQ to be “1” but the system will not enter interrupt vector. Users need to care for the
operation under multi-interrupt situation.
¾
¾
Example: T0 interrupt request setup.
B0BCLR
B0BCLR
MOV
B0MOV
MOV
B0MOV
FT0IEN
FT0ENB
A, #20H
T0M, A
A, #74H
T0C, A
; Disable T0 interrupt service
; Disable T0 timer
;
; Set T0 clock = Fcpu / 64
; Set T0C initial value = 74H
; Set T0 interval = 10 ms
B0BSET
B0BCLR
B0BSET
FT0IEN
FT0IRQ
FT0ENB
; Enable T0 interrupt service
; Clear T0 interrupt request flag
; Enable T0 timer
B0BSET
FGIE
; Enable GIE
Example: T0 interrupt service routine.
ORG
JMP
8
INT_SERVICE
; Interrupt vector
INT_SERVICE:
…
; Push routine to save ACC and PFLAG to buffers.
B0BTS1
JMP
FT0IRQ
EXIT_INT
; Check T0IRQ
; T0IRQ = 0, exit interrupt vector
B0BCLR
MOV
B0MOV
…
…
FT0IRQ
A, #74H
T0C, A
; Reset T0IRQ
; Reset T0C.
; T0 interrupt service routine
EXIT_INT:
…
; Pop routine to load ACC and PFLAG from buffers.
RETI
; Exit interrupt vector
SONiX TECHNOLOGY CO., LTD
Page 65
Version 1.4
SN8P2608
8-Bit Micro-Controller
6.9 TC1 INTERRUPT OPERATION
When the TC1C counter overflows, the TC1IRQ will be set to “1” no matter the TC1IEN is enable or disable. If the
TC1IEN and the trigger event TC1IRQ is set to be “1”. As the result, the system will execute the interrupt vector. If the
TC1IEN = 0, the trigger event TC1IRQ is still set to be “1”. Moreover, the system won’t execute interrupt vector even
when the TC1IEN is set to be “1”. Users need to be cautious with the operation under multi-interrupt situation.
Example: TC1 interrupt request setup.
B0BCLR
B0BCLR
MOV
B0MOV
MOV
B0MOV
FTC1IEN
FTC1ENB
A, #20H
TC1M, A
A, #74H
TC1C, A
; Disable TC1 interrupt service
; Disable TC1 timer
;
; Set TC1 clock = Fcpu / 64
; Set TC1C initial value = 74H
; Set TC1 interval = 10 ms
B0BSET
B0BCLR
B0BSET
FTC1IEN
FTC1IRQ
FTC1ENB
; Enable TC1 interrupt service
; Clear TC1 interrupt request flag
; Enable TC1 timer
B0BSET
FGIE
; Enable GIE
Example: TC1 interrupt service routine.
ORG
JMP
8
INT_SERVICE
; Interrupt vector
INT_SERVICE:
…
; Push routine to save ACC and PFLAG to buffers.
B0BTS1
JMP
FTC1IRQ
EXIT_INT
; Check TC1IRQ
; TC1IRQ = 0, exit interrupt vector
B0BCLR
MOV
B0MOV
…
…
FTC1IRQ
A, #74H
TC1C, A
; Reset TC1IRQ
; Reset TC1C.
; TC1 interrupt service routine
EXIT_INT:
…
; Pop routine to load ACC and PFLAG from buffers.
RETI
; Exit interrupt vector
SONiX TECHNOLOGY CO., LTD
Page 66
Version 1.4
SN8P2608
8-Bit Micro-Controller
6.10
MULTI-INTERRUPT OPERATION
Under certain condition, the software designer uses more than one interrupt requests. Processing multi-interrupt
request requires setting the priority of the interrupt requests. The IRQ flags of interrupts are controlled by the interrupt
event. Nevertheless, the IRQ flag “1” doesn’t mean the system will execute the interrupt vector. In addition, which
means the IRQ flags can be set “1” by the events without enable the interrupt. Once the event occurs, the IRQ will be
logic “1”. The IRQ and its trigger event relationship is as the below table.
Interrupt Name
P00IRQ
P01IRQ
T0IRQ
TC1IRQ
Trigger Event Description
P0.0 trigger controlled by PEDGE.
P0.1 falling edge trigger.
T0C overflow.
TC1C overflow.
For multi-interrupt conditions, two things need to be taking care of. One is to set the priority for these interrupt requests.
Two is using IEN and IRQ flags to decide which interrupt to be executed. Users have to check interrupt control bit and
interrupt request flag in interrupt routine.
¾
Example: Check the interrupt request under multi-interrupt operation
ORG
JMP
8
INT_SERVICE
; Interrupt vector
INT_SERVICE:
…
; Push routine to save ACC and PFLAG to buffers.
INTP00CHK:
B0BTS1
JMP
B0BTS0
JMP
FP00IEN
INTP01CHK
FP00IRQ
INTP00
B0BTS1
JMP
B0BTS0
JMP
FP01IEN
INTT0CHK
FP01IRQ
INTP01
B0BTS1
JMP
B0BTS0
JMP
FT0IEN
INTTC1CHK
FT0IRQ
INTT0
B0BTS1
JMP
B0BTS0
JMP
FTC1IEN
INT_EXIT
FTC1IRQ
INTTC1
INTP01CHK:
INTT0CHK:
INTTC1CHK:
; Check INT0 interrupt request
; Check P00IEN
; Jump check to next interrupt
; Check P00IRQ
; Jump to INT0 interrupt service routine
; Check INT0 interrupt request
; Check P01IEN
; Jump check to next interrupt
; Check P01IRQ
; Jump to INT1 interrupt service routine
; Check T0 interrupt request
; Check T0IEN
; Jump check to next interrupt
; Check T0IRQ
; Jump to T0 interrupt service routine
; Check TC1 interrupt request
; Check TC1IEN
; Jump to exit of IRQ
; Check TC1IRQ
; Jump to TC1 interrupt service routine
INT_EXIT:
…
; Pop routine to load ACC and PFLAG from buffers.
RETI
; Exit interrupt vector
SONiX TECHNOLOGY CO., LTD
Page 67
Version 1.4
SN8P2608
8-Bit Micro-Controller
7
I/O PORT
7.1 I/O PORT MODE
The port direction is programmed by PnM register. All I/O ports can select input or output direction.
0B8H
P0M
Read/Write
After reset
Bit 7
P07M
R/W
0
Bit 6
P06M
R/W
0
Bit 5
P05M
R/W
0
Bit 4
P04M
R/W
0
Bit 3
P03M
R/W
0
Bit 2
P02M
R/W
0
Bit 1
P01M
R/W
0
Bit 0
P00M
R/W
0
0C1H
P1M
Read/Write
After reset
Bit 7
P17M
R/W
0
Bit 6
P16M
R/W
0
Bit 5
P15M
R/W
0
Bit 4
P14M
R/W
0
Bit 3
P13M
R/W
0
Bit 2
P12M
R/W
0
Bit 1
P12M
R/W
0
Bit 0
P10M
R/W
0
0C2H
P2M
Read/Write
After reset
Bit 7
P27M
R/W
0
Bit 6
P26M
R/W
0
Bit 5
P25M
R/W
0
Bit 4
P24M
R/W
0
Bit 3
P23M
R/W
0
Bit 2
P22M
R/W
0
Bit 1
P22M
R/W
0
Bit 0
P20M
R/W
0
0C4H
P4M
Read/Write
After reset
Bit 7
-
Bit 6
P46M
R/W
0
Bit 5
P45M
R/W
0
Bit 4
P44M
R/W
0
Bit 3
P43M
R/W
0
Bit 2
P42M
R/W
0
Bit 1
P42M
R/W
0
Bit 0
P40M
R/W
0
0C5H
P5M
Read/Write
After reset
Bit 7
P57M
R/W
0
Bit 6
P56M
R/W
0
Bit 5
P55M
R/W
0
Bit 4
P54M
R/W
0
Bit 3
P53M
R/W
0
Bit 2
P52M
R/W
0
Bit 1
P51M
R/W
0
Bit 0
P50M
R/W
0
Bit[7:0]
’
PnM[7:0]: Pn mode control bits. (n = 0~5).
0 = Pn is input mode.
1 = Pn is output mode.
Note:
1. Users can program them by bit control instructions (B0BSET, B0BCLR).
2. P4.7 is input only pin, and the P4M.7 keeps “1”.
SONiX TECHNOLOGY CO., LTD
Page 68
Version 1.4
SN8P2608
8-Bit Micro-Controller
¾
Example: I/O mode selecting
CLR
CLR
CLR
CLR
CLR
P0M
P2M
P4M
P1M
P5M
; Set all ports to be input mode.
MOV
B0MOV
B0MOV
B0MOV
B0MOV
B0MOV
A, #0FFH
P0M, A
P1M, A
P2M,A
P4M,A
P5M, A
; Set all ports to be output mode.
B0BCLR
P1M.2
; Set P1.2 to be input mode.
B0BSET
P1M.2
; Set P1.2 to be output mode.
SONiX TECHNOLOGY CO., LTD
Page 69
Version 1.4
SN8P2608
8-Bit Micro-Controller
7.2 I/O PULL UP REGISTER
0E0H
P0UR
Read/Write
After reset
Bit 7
P07R
W
0
Bit 6
P06R
W
0
Bit 5
P05R
W
0
Bit 4
P04R
W
0
Bit 3
P03R
W
0
Bit 2
P02R
W
0
Bit 1
P01R
W
0
Bit 0
P00R
W
0
0E1H
P1UR
Read/Write
After reset
Bit 7
P17R
W
0
Bit 6
P16R
W
0
Bit 5
P15R
W
0
Bit 4
P14R
W
0
Bit 3
P13R
W
0
Bit 2
P12R
W
0
Bit 1
P11R
W
0
Bit 0
P10R
W
0
0E2H
P2UR
Read/Write
After reset
Bit 7
P27R
W
0
Bit 6
P26R
W
0
Bit 5
P25R
W
0
Bit 4
P24R
W
0
Bit 3
P23R
W
0
Bit 2
P22R
W
0
Bit 1
P21R
W
0
Bit 0
P20R
W
0
0E4H
P4UR
Read/Write
After reset
Bit 7
-
Bit 6
P46R
W
0
Bit 5
P45R
W
0
Bit 4
P44R
W
0
Bit 3
P43R
W
0
Bit 2
P42R
W
0
Bit 1
P41R
W
0
Bit 0
P40R
W
0
0E5H
P5UR
Read/Write
After reset
Bit 7
P57R
W
0
Bit 6
P56R
W
0
Bit 5
P55R
W
0
Bit 4
P54R
W
0
Bit 3
P53R
W
0
Bit 2
P52R
W
0
Bit 1
P51R
W
0
Bit 0
P50R
W
0
’
Note: P4.7 is input only pin and without pull-up resister. The P4UR.7 keeps “1”.
¾
Example: I/O Pull up Register
MOV
B0MOV
B0MOV
B0MOV
B0MOV
B0MOV
A, #0FFH
P0UR, A
P1UR, A
P2UR,A
P4UR,A
P5UR, A
SONiX TECHNOLOGY CO., LTD
; Enable Port0, 1, 2, 5 Pull-up register,
;
Page 70
Version 1.4
SN8P2608
8-Bit Micro-Controller
7.3 I/O OPEN-DRAIN REGISTER
P1.0, P1.1 are built-in open-drain function. P1.0, P1.1 must be set as output mode when enable open-drain function.
Open-drain external circuit is as following.
MCU2
MCU1
U
U
VCC
Pull-up Resistor
Open-drain pin
Open-drain pin
The pull-up resistor is necessary. Open-drain output high is driven by pull-up resistor. Output low is sunken by MCU’s
pin.
0E9H
P1OC
Read/Write
After reset
Bit 7
-
Bit 6
-
Bit 5
-
Bit 0
P10OC: P10 open-drain control bit
0 = Disable open-drain mode
1 = Enable open-drain mode
Bit 1
P11OC: P11 open-drain control bit
0 = Disable open-drain mode
1 = Enable open-drain mode
¾
Bit 4
-
Bit 3
-
Bit 2
-
Bit 0
P10OC
W
0
Example: Enable P1.0 to open-drain mode and output high.
B0BSET
P1.0
; Set P1.0 buffer high.
B0BSET
MOV
B0MOV
P10M
A, #01H
P1OC, A
; Enable P1.0 output mode.
; Enable P1.0 open-drain function.
’
Note: P1OC is write only register. Setting P10OC must be used “MOV” instructions.
¾
Example: Disable P1.0 to open-drain mode and output low.
MOV
B0MOV
’
Bit 1
P11OC
W
0
A, #0
P1OC, A
; Disable P1.0 open-drain function.
Note: After disable P1.0 open-drain function, P1.0 mode returns to last I/O mode.
SONiX TECHNOLOGY CO., LTD
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Version 1.4
SN8P2608
8-Bit Micro-Controller
7.4 I/O PORT DATA REGISTER
0D0H
P0
Read/Write
After reset
Bit 7
P07
R/W
0
Bit 6
P06
R/W
0
Bit 5
P05
R/W
0
Bit 4
P04
R/W
0
Bit 3
P03
R/W
0
Bit 2
P02
R/W
0
Bit 1
P01
R/W
0
Bit 0
P00
R/W
0
0D1H
P1
Read/Write
After reset
Bit 7
P17
R/W
0
Bit 6
P16
R/W
0
Bit 5
P15
R/W
0
Bit 4
P14
R/W
0
Bit 3
P13
R/W
0
Bit 2
P12
R/W
0
Bit 1
P11
R/W
0
Bit 0
P10
R/W
0
0D2H
P2
Read/Write
After reset
Bit 7
P27
R/W
0
Bit 6
P26
R/W
0
Bit 5
P25
R/W
0
Bit 4
P24
R/W
0
Bit 3
P23
R/W
0
Bit 2
P22
R/W
0
Bit 1
P21
R/W
0
Bit 0
P20
R/W
0
0D4H
P4
Read/Write
After reset
Bit 7
P47
R
0
Bit 6
P46
R/W
0
Bit 5
P45
R/W
0
Bit 4
P44
R/W
0
Bit 3
P43
R/W
0
Bit 2
P42
R/W
0
Bit 1
P41
R/W
0
Bit 0
P40
R/W
0
0D5H
P5
Read/Write
After reset
Bit 7
P57
R/W
0
Bit 6
P56
R/W
0
Bit 5
P55
R/W
0
Bit 4
P54
R/W
0
Bit 3
P53
R/W
0
Bit 2
P52
R/W
0
Bit 1
P51
R/W
0
Bit 0
P50
R/W
0
’
Note: The P47 keeps “1” when external reset enable by code option.
¾
Example: Read data from input port.
B0MOV
A, P0
B0MOV
A, P1
B0MOV
A, P2
B0MOV
A, P4
B0MOV
A, P5
¾
¾
Example: Write data to output port.
MOV
A, #0FFH
B0MOV
P0, A
B0MOV
P1, A
B0MOV
P2, A
B0MOV
P4, A
B0MOV
P5, A
Example: Write one bit data to output port.
B0BSET
P1.3
B0BSET
P5.5
B0BCLR
B0BCLR
P1.3
P5.5
SONiX TECHNOLOGY CO., LTD
; Read data from Port 0
; Read data from Port 1
; Read data from Port 2
; Read data from Port 4
; Read data from Port 5
; Write data FFH to all Port.
; Set P1.3 and P5.5 to be “1”.
; Set P1.3 and P5.5 to be “0”.
Page 72
Version 1.4
SN8P2608
8-Bit Micro-Controller
8
TIMERS
8.1 WATCHDOG TIMER
The watchdog timer (WDT) is a binary up counter designed for monitoring program execution. If the program goes into
the unknown status by noise interference, WDT overflow signal raises and resets MCU. Watchdog clock controlled by
code option and the clock source is internal low-speed oscillator (16KHz @3V, 32KHz @5V).
Watchdog overflow time = 8192 / Internal Low-Speed oscillator (sec).
VDD
3V
5V
’
Internal Low RC Freq.
16KHz
32KHz
Watchdog Overflow Time
512ms
256ms
Note:
1. If watchdog is “Always_On” mode, it keeps running event under power down mode or green
mode.
2. For S8KD ICE simulation, clear watchdog timer using “@RST_WDT” macro is necessary. Or
the S8KD watchdog would be error.
Watchdog clear is controlled by WDTR register. Moving 0x5A data into WDTR is to reset watchdog timer.
0CCH
WDTR
Read/Write
After reset
¾
Bit 7
WDTR7
W
0
Bit 6
WDTR6
W
0
Bit 5
WDTR5
W
0
Bit 4
WDTR4
W
0
Bit 3
WDTR3
W
0
Bit 2
WDTR2
W
0
Bit 1
WDTR1
W
0
Bit 0
WDTR0
W
0
Example: An operation of watchdog timer is as following. To clear the watchdog timer counter in the top
of the main routine of the program.
Main:
MOV
B0MOV
…
…
CALL
CALL
…
…
JMP
A, #5AH
WDTR, A
; Clear the watchdog timer.
SUB1
SUB2
MAIN
SONiX TECHNOLOGY CO., LTD
Page 73
Version 1.4
SN8P2608
8-Bit Micro-Controller
¾
Example: Clear watchdog timer by @RST_WDT macro.
Main:
@RST_WDT
…
…
CALL
CALL
…
…
JMP
; Clear the watchdog timer.
SUB1
SUB2
MAIN
Watchdog timer application note is as following.
z
Before clearing watchdog timer, check I/O status and check RAM contents can improve system error.
z
z
Don’t clear watchdog timer in interrupt vector and interrupt service routine. That can improve main routine fail.
Clearing watchdog timer program is only at one part of the program. This way is the best structure to enhance the
watchdog timer function.
¾
Example: An operation of watchdog timer is as following. To clear the watchdog timer counter in the top
of the main routine of the program.
Main:
Err:
…
…
JMP $
; Check I/O.
; Check RAM
; I/O or RAM error. Program jump here and don’t
; clear watchdog. Wait watchdog timer overflow to reset IC.
Correct:
B0BSET
…
CALL
CALL
…
…
…
JMP
FWDRST
; I/O and RAM are correct. Clear watchdog timer and
; execute program.
; Only one clearing watchdog timer of whole program.
SUB1
SUB2
MAIN
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8-Bit Micro-Controller
8.2 TIMER 0 (T0)
8.2.1 OVERVIEW
The T0 is an 8-bit binary up timer and event counter. If T0 timer occurs an overflow (from FFH to 00H), it will continue
counting and issue a time-out signal to trigger T0 interrupt to request interrupt service.
The main purposes of the T0 timer is as following.
)
)
8-bit programmable up counting timer: Generates interrupts at specific time intervals based on the selected
clock frequency.
Green mode wakeup function: T0 can be green mode wake-up time as T0ENB = 1. System will be wake-up by
T0 time out.
T0 Rate
(Fcpu/2~Fcpu/256)
T0ENB
Internal Data Bus
Load
Fcpu
T0C 8-Bit Binary Up Counting Counter
T0 Time Out
CPUM0,1
8.2.2 T0M MODE REGISTER
0D8H
T0M
Read/Write
After reset
Bit 7
T0ENB
R/W
0
Bit 6
T0rate2
R/W
0
Bit 5
T0rate1
R/W
0
Bit [6:4]
T0RATE[2:0]: T0 internal clock select bits.
000 = fcpu/256.
001 = fcpu/128.
…
110 = fcpu/4.
111 = fcpu/2.
Bit 7
T0ENB: T0 counter control bit.
0 = Disable T0 timer.
1 = Enable T0 timer.
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Bit 4
T0rate0
R/W
0
Page 75
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Version 1.4
SN8P2608
8-Bit Micro-Controller
8.2.3 T0C COUNTING REGISTER
T0C is an 8-bit counter register for T0 interval time control.
0D9H
T0C
Read/Write
After reset
Bit 7
T0C7
R/W
0
Bit 6
T0C6
R/W
0
Bit 5
T0C5
R/W
0
Bit 4
T0C4
R/W
0
Bit 3
T0C3
R/W
0
Bit 2
T0C2
R/W
0
Bit 1
T0C1
R/W
0
Bit 0
T0C0
R/W
0
The equation of T0C initial value is as following.
T0C initial value = 256 - (T0 interrupt interval time * input clock)
¾
Example: To set 10ms interval time for T0 interrupt. High clock is external 4MHz. Fcpu=Fosc/4. Select
T0RATE=010 (Fcpu/64).
T0C initial value = 256 - (T0 interrupt interval time * input clock)
= 256 - (10ms * 4MHz / 4 / 64)
= 256 - (10-2 * 4 * 106 / 4 / 64)
= 100
= 64H
The basic timer table interval time of T0.
High speed mode (Fcpu = 4MHz / 4)
T0RATE
T0CLOCK
Max overflow interval One step = max/256
000
Fcpu/256
65.536 ms
256 us
001
Fcpu/128
32.768 ms
128 us
010
Fcpu/64
16.384 ms
64 us
011
Fcpu/32
8.192 ms
32 us
100
Fcpu/16
4.096 ms
16 us
101
Fcpu/8
2.048 ms
8 us
110
Fcpu/4
1.024 ms
4 us
111
Fcpu/2
0.512 ms
2 us
’
Low speed mode (Fcpu = 32768Hz / 4)
Max overflow interval One step = max/256
8000 ms
31250 us
4000 ms
15625 us
2000 ms
7812.5 us
1000 ms
3906.25 us
500 ms
1953.125 us
250 ms
976.563 us
125 ms
488.281 us
62.5 ms
244.141 us
Note: T0C doesn’t support read and modify write instructions as “B0ADD M,A . INCMS…”.
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8.2.4 T0 TIMER OPERATION SEQUENCE
T0 timer operation sequence of setup T0 timer is as following.
)
Stop T0 timer counting, disable T0 interrupt function and clear T0 interrupt request flag.
B0BCLR
B0BCLR
B0BCLR
)
)
FT0ENB
FT0IEN
FT0IRQ
; T0 timer.
; T0 interrupt function is disabled.
; T0 interrupt request flag is cleared.
MOV
A, #0xxx0000b
B0MOV
T0M,A
;The T0 rate control bits exist in bit4~bit6 of T0M. The
; value is from x000xxxxb~x111xxxxb.
; T0 timer is disabled.
Set T0 timer rate.
Set T0 interrupt interval time.
MOV
B0MOV
)
; Set T0C value.
FT0IEN
; Enable T0 interrupt function.
FT0ENB
; Enable T0 timer.
Set T0 timer function mode.
B0BSET
)
A,#7FH
T0C,A
Enable T0 timer.
B0BSET
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8.2.5 T0 TIMER NOTICE
When T0C.7 is from “1” to “0”, T0IRQ is set “1” whether T0 is operating or not. If T0IRQ = 0 and T0C is changed by
program, T0IRQ might be set as T0C.7 is from “1” to “0”. The condition makes unexpected T0 interrupt occurring.
¾
Example: T0C = 0x80 (T0C.7 = 1) and T0IRQ = 0. T0IRQ will set as “1” when T0C is cleared by program
(T0C.7 = 0).
MOV
B0MOV
A, #0
T0C, A
; Clear T0C and T0C.7 is from “1” to “0”.
; T0IRQ changed from “0” to “1”.
B0BSET
FT0IEN
; Enable T0 interrupt function and system jumps to interrupt
; vector (ORG 8) at next cycle.
If T0C changing in system operating duration is necessary, to disable T0 interrupt function (T0IEN = 0) before changing
T0C value. The solution can avoid unexpected T0 interrupt occurring and example is as following.
¾
Example: T0C = 0x80 and T0IRQ = 0. T0IRQ will change to “1” when T0C is cleared by program.
B0BCLR
FT0IEN
; Disable T0 interrupt function.
MOV
B0MOV
A, #0
T0C, A
; Clear T0C and T0C.7 is from “1” to “0”.
; T0IRQ changed from “0” to “1”.
B0BCLR
FT0IRQ
; Clear T0IRQ flag.
B0BSET
…
…
FT0IEN
; Enable T0 interrupt function.
’
Note: Disable T0 interrupt function first, and load new T0C value into T0C buffer. This way can avoid
unexpected T0 interrupt occurring.
’
Note: T0C doesn’t support read and modify write instructions as “B0ADD M,A . INCMS…”.
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8.3 TIMER/COUNTER 1 (TC1)
8.3.1 OVERVIEW
The TC1 is an 8-bit binary up counting timer. TC1 has two clock sources including internal clock and external clock for
counting a precision time. The internal clock source is from Fcpu. The external clock is INT1 from P0.1 pin (Falling
edge trigger). Using TC1M register selects TC1C’s clock source from internal or external. If TC1 timer occurs an
overflow, it will continue counting and issue a time-out signal to trigger TC1 interrupt to request interrupt service. TC1
overflow time is 0xFF to 0X00 normally. Under PWM mode, TC1 overflow is still 256 counts.
The main purposes of the TC1 timer is as following.
)
)
)
)
8-bit programmable up counting timer: Generates interrupts at specific time intervals based on the selected
clock frequency.
External event counter: Counts system “events” based on falling edge detection of external clock signals at the
INT1 input pin.
Buzzer output
PWM output
TC1OUT
Internal P5.3 I/O Circuit
ALOAD1
Buzzer
Auto. Reload
TC1 / 2
P5.3
TC1R Reload
Data Buffer
R
TC1 Rate
(Fcpu/2~Fcpu/256)
TC1CKS
Compare
TC1ENB
PWM1OUT
PWM
S
Load
Fcpu
TC1C
8-Bit Binary Up
Counting Counter
TC1 Time Out
INT1
(Schmitter Trigger)
CPUM0,1
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8-Bit Micro-Controller
8.3.2 TC1M MODE REGISTER
0DCH
TC1M
Read/Write
After reset
Bit 7
TC1ENB
R/W
0
Bit 6
TC1rate2
R/W
0
Bit 5
TC1rate1
R/W
0
Bit 4
TC1rate0
R/W
0
Bit 3
TC1CKS
R/W
0
Bit 2
ALOAD1
R/W
0
Bit 1
TC1OUT
R/W
0
Bit 0
PWM1OUT: PWM output control bit.
0 = Disable PWM output.
1 = Enable PWM output. PWM duty controlled by TC1OUT, ALOAD1 bits.
Bit 1
TC1OUT: TC1 time out toggle signal output control bit. Only valid when PWM1OUT = 0.
0 = Disable, P5.3 is I/O function.
1 = Enable, P5.3 is output TC1OUT signal.
Bit 2
ALOAD1: Auto-reload control bit. Only valid when PWM1OUT = 0.
0 = Disable TC1 auto-reload function.
1 = Enable TC1 auto-reload function.
Bit 3
TC1CKS: TC1 clock source select bit.
0 = Internal clock (Fcpu).
1 = External clock from P0.1/INT1 pin.
Bit [6:4]
TC1RATE[2:0]: TC1 internal clock select bits.
000 = fcpu/256.
001 = fcpu/128.
…
110 = fcpu/4.
111 = fcpu/2.
Bit 7
TC1ENB: TC1 counter control bit.
0 = Disable TC1 timer.
1 = Enable TC1 timer.
’
Bit 0
PWM1OUT
R/W
0
Note: When TC1CKS=1, TC1 became an external event counter and TC1RATE is useless. No more P0.1
interrupt request will be raised. (P0.1IRQ will be always 0).
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8-Bit Micro-Controller
8.3.3 TC1C COUNTING REGISTER
TC1C is an 8-bit counter register for TC1 interval time control.
0DDH
TC1C
Read/Write
After reset
Bit 7
TC1C7
R/W
0
Bit 6
TC1C6
R/W
0
Bit 5
TC1C5
R/W
0
Bit 4
TC1C4
R/W
0
Bit 3
TC1C3
R/W
0
Bit 2
TC1C2
R/W
0
Bit 1
TC1C1
R/W
0
Bit 0
TC1C0
R/W
0
The equation of TC1C initial value is as following.
TC1C initial value = 256 - (TC1 interrupt interval time * input clock)
¾
Example: To set 10ms interval time for TC1 interrupt. TC1 clock source is Fcpu (TC1KS=0). High clock is
external 4MHz. Fcpu=Fosc/4. Select TC1RATE=010 (Fcpu/64).
TC1C initial value = 256 - (TC1 interrupt interval time * input clock)
= 256 - (10ms * 4MHz / 4 / 64)
= 256 - (10-2 * 4 * 106 / 4 / 64)
= 100
= 64H
The basic timer table interval time of TC1.
High speed mode (Fcpu = 4MHz / 4)
TC1RATE TC1CLOCK
Max overflow interval One step = max/256
000
Fcpu/256
65.536 ms
256 us
001
Fcpu/128
32.768 ms
128 us
010
Fcpu/64
16.384 ms
64 us
011
Fcpu/32
8.192 ms
32 us
100
Fcpu/16
4.096 ms
16 us
101
Fcpu/8
2.048 ms
8 us
110
Fcpu/4
1.024 ms
4 us
111
Fcpu/2
0.512 ms
2 us
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Page 81
Low speed mode (Fcpu = 32768Hz / 4)
Max overflow interval One step = max/256
8000 ms
31250 us
4000 ms
15625 us
2000 ms
7812.5 us
1000 ms
3906.25 us
500 ms
1953.125 us
250 ms
976.563 us
125 ms
488.281 us
62.5 ms
244.141 us
Version 1.4
SN8P2608
8-Bit Micro-Controller
8.3.4 TC1R AUTO-LOAD REGISTER
TC1 timer is with auto-load function controlled by ALOAD1 bit of TC1M. When TC1C overflow occurring, TC1R value
will load to TC1C by system. It is easy to generate an accurate time, and users don’t reset TC1C during interrupt
service routine.
0DEH
TC1R
Read/Write
After reset
Bit 7
TC1R7
W
0
Bit 6
TC1R6
W
0
Bit 5
TC1R5
W
0
Bit 4
TC1R4
W
0
Bit 3
TC1R3
W
0
Bit 2
TC1R2
W
0
Bit 1
TC1R1
W
0
Bit 0
TC1R0
W
0
The equation of TC1R initial value is as following.
TC1R initial value = N - (TC1 interrupt interval time * input clock)
N is TC1 overflow boundary number. TC1 timer overflow time has five types (TC1 timer, TC1 event counter, TC1 Fcpu
clock source, PWM mode and no PWM mode). These parameters decide TC1 overflow time and valid value as follow
table.
TC1CKS PWM1 ALOAD1 TC1OUT
0
1
¾
0
1
1
1
1
-
x
0
0
1
1
-
x
0
1
0
1
-
N
256
256
64
32
16
256
TC1R valid
value
0x00~0xFF
0x00~0xFF
0x00~0x3F
0x00~0x1F
0x00~0x0F
0x00~0xFF
TC1R value
binary type
00000000b~11111111b
00000000b~11111111b
xx000000b~xx111111b
xxx00000b~xxx11111b
xxxx0000b~xxxx1111b
00000000b~11111111b
Example: To set 10ms interval time for TC1 interrupt. TC1 clock source is Fcpu (TC1KS=0) and no PWM
output (PWM1=0). High clock is external 4MHz. Fcpu=Fosc/4. Select TC1RATE=010 (Fcpu/64).
TC1R initial value = N - (TC1 interrupt interval time * input clock)
= 256 - (10ms * 4MHz / 4 / 64)
= 256 - (10-2 * 4 * 106 / 4 / 64)
= 100
= 64H
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8-Bit Micro-Controller
8.3.5 TC1 CLOCK FREQUENCY OUTPUT (BUZZER)
Buzzer output (TC1OUT) is from TC1 timer/counter frequency output function. By setting the TC1 clock frequency, the
clock signal is output to P5.3 and the P5.3 general purpose I/O function is auto-disable. The TC1OUT frequency is
divided by 2 from TC1 interval time. TC1OUT frequency is 1/2 TC1 frequency. The TC1 clock has many combinations
and easily to make difference frequency. The TC1OUT frequency waveform is as following.
1
2
3
4
TC1 Overflow Clock
1
2
3
4
TC1OUT (Buzzer) Output Clock
¾
’
Example: Setup TC1OUT output from TC1 to TC1OUT (P5.3). The external high-speed clock is 4MHz. The
TC1OUT frequency is 0.5KHz. Because the TC1OUT signal is divided by 2, set the TC1 clock to 1KHz. The
TC1 clock source is from external oscillator clock. TC1 rate is Fcpu/4. The TC1RATE2~TC1RATE1 = 110.
TC1C = TC1R = 131.
MOV
B0MOV
A,#01100000B
TC1M,A
MOV
B0MOV
B0MOV
A,#131
TC1C,A
TC1R,A
; Set the auto-reload reference value
B0BSET
B0BSET
B0BSET
FTC1OUT
FALOAD1
FTC1ENB
; Enable TC1 output to P5.3 and disable P5.3 I/O function
; Enable TC1 auto-reload function
; Enable TC1 timer
; Set the TC1 rate to Fcpu/4
Note: Buzzer output is enable, and “PWM1OUT” must be “0”.
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8-Bit Micro-Controller
8.3.6 TC1 TIMER OPERATION SEQUENCE
TC1 timer operation includes timer interrupt, event counter, TC1OUT and PWM. The sequence of setup TC1 timer is
as following.
)
Stop TC1 timer counting, disable TC1 interrupt function and clear TC1 interrupt request flag.
B0BCLR
B0BCLR
B0BCLR
)
)
FTC1ENB
FTC1IEN
FTC1IRQ
Set TC1 timer rate. (Besides event counter mode.)
MOV
A, #0xxx0000b
B0MOV
TC1M,A
;The TC1 rate control bits exist in bit4~bit6 of TC1M. The
; value is from x000xxxxb~x111xxxxb.
; TC1 timer is disabled.
Set TC1 timer clock source.
; Select TC1 internal / external clock source.
B0BCLR
FTC1CKS
or
B0BSET
FTC1CKS
)
; TC1 timer, TC1OUT and PWM stop.
; TC1 interrupt function is disabled.
; TC1 interrupt request flag is cleared.
; Select TC1 internal clock source.
; Select TC1 external clock source.
Set TC1 timer auto-load mode.
B0BCLR
FALOAD1
; Enable TC1 auto reload function.
B0BSET
FALOAD1
; Disable TC1 auto reload function.
or
)
Set TC1 interrupt interval time, TC1OUT (Buzzer) frequency or PWM duty cycle.
; Set TC1 interrupt interval time, TC1OUT (Buzzer) frequency or PWM duty.
MOV
A,#7FH
; TC1C and TC1R value is decided by TC1 mode.
B0MOV
TC1C,A
; Set TC1C value.
B0MOV
TC1R,A
; Set TC1R value under auto reload mode or PWM mode.
; In PWM mode, set PWM cycle.
B0BCLR
B0BCLR
or
B0BCLR
B0BSET
or
B0BSET
B0BCLR
or
B0BSET
B0BSET
FALOAD1
FTC1OUT
; ALOAD1, TC1OUT = 00, PWM cycle boundary is 0~255.
FALOAD1
FTC1OUT
; ALOAD1, TC1OUT = 01, PWM cycle boundary is 0~63.
FALOAD1
FTC1OUT
; ALOAD1, TC1OUT = 10, PWM cycle boundary is 0~31.
FALOAD1
FTC1OUT
; ALOAD1, TC1OUT = 11, PWM cycle boundary is 0~15.
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8-Bit Micro-Controller
)
Set TC1 timer function mode.
B0BSET
FTC1IEN
; Enable TC1 interrupt function.
B0BSET
FTC1OUT
; Enable TC1OUT (Buzzer) function.
B0BSET
FPWM1OUT
; Enable PWM function.
FTC1ENB
; Enable TC1 timer.
or
or
)
Enable TC1 timer.
B0BSET
8.3.7 TC1 TIMER NOTICE
When TC1C value changes from “0xFF” to not “0xFF”, TC1IRQ is set “1” whether TC1 is operating or not. If TC1IRQ =
0 and TC1C is changed by program, TC1IRQ might be set as TC1C is from “0xFF” to not “0xFF”. The condition makes
unexpected TC1 interrupt occurring.
¾
Example: TC1C = 0xFF and TC1IRQ = 0. TC1IRQ will set as “1” when TC1C is cleared by program (TC1C =
0).
MOV
B0MOV
A, #0
TC1C, A
; Clear TC1C.
; TC1IRQ changed from “0” to “1”.
B0BSET
FTC1IEN
; Enable TC1 interrupt function and system jumps to interrupt
; vector (ORG 8) at next cycle.
If TC1C changing in system operating duration is necessary, to disable TC1 interrupt function (TC1IEN = 0) before
changing TC1C value. The solution can avoid unexpected TC1 interrupt occurring and example is as following.
¾
’
Example: TC1C = 0xFF and TC1IRQ = 0. Clearing TC1C must be after TC1 interrupt disable.
B0BCLR
FTC1IEN
; Disable TC1 interrupt function.
MOV
B0MOV
A, #0
TC1C, A
; Clear TC1C.
; TC1IRQ changed from “0” to “1”.
B0BCLR
FTC1IRQ
; Clear TC1IRQ flag.
B0BSET
…
…
FTC1IEN
; Enable TC1 interrupt function.
Note: Disable TC1 interrupt function first, and load new TC1C value into TC1C buffer. This way can avoid
unexpected TC1 interrupt occurring.
8.4 PWM1 MODE
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8-Bit Micro-Controller
8.4.1
OVERVIEW
PWM function is generated by TC1 timer counter and output the PWM signal to PWM1OUT pin (P5.3). The 8-bit
counter counts modulus 256, 64, 32, 16 controlled by ALOAD1, TC1OUT bits. The value of the 8-bit counter (TC1C) is
compared to the contents of the reference register (TC1R). When the reference register value (TC1R) is equal to the
counter value (TC1C), the PWM output goes low. When the counter reaches zero, the PWM output is forced high. The
low-to-high ratio (duty) of the PWM1 output is TC1R/256, 64, 32, 16.
ALOAD1 TC1OUT PWM duty range
0
0
1
1
0
1
0
1
MAX. PWM
Frequency
(Fcpu = 4MHz)
7.8125K
31.25K
62.5K
125K
TC1C valid value TC1R valid bits value
0/256~255/256
0/64~63/64
0/32~31/32
0/16~15/16
0x00~0xFF
0x00~0x3F
0x00~0x1F
0x00~0x0F
0x00~0xFF
0x00~0x3F
0x00~0x1F
0x00~0x0F
Remark
Overflow per 256 count
Overflow per 64 count
Overflow per 32 count
Overflow per 16 count
The Output duty of PWM is with different TC1R. Duty range is from 0/256~255/256.
0
1
128
……
……
254
255
0
1
……
128
……
254
255
TC1 Clock
TC1R=00H
TC1R=01H
Low
High
Low
High
TC1R=80H
TC1R=FFH
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Low
High
Low
Page 86
Version 1.4
SN8P2608
8-Bit Micro-Controller
8.4.2
TC1IRQ AND PWM DUTY
In PWM mode, the frequency of TC1IRQ is depended on PWM duty range. From following diagram, the TC1IRQ
frequency is related with PWM duty.
TC1 Overflow,
TC1IRQ = 1
0xFF
TC1C Value
0x00
PWM1 Output
(Duty Range 0~255)
PWM1 Output
(Duty Range 0~63)
PWM1 Output
(Duty Range 0~31)
PWM1 Output
(Duty Range 0~15)
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8-Bit Micro-Controller
8.4.3
PWM PROGRAM EXAMPLE
Example: Setup PWM1 output from TC1 to PWM1OUT (P5.3). The external high-speed oscillator clock is 4MHz.
Fcpu = Fosc/4. The duty of PWM is 30/256. The PWM frequency is about 1KHz. The PWM clock source is
from external oscillator clock. TC1 rate is Fcpu/4. The TC1RATE2~TC1RATE1 = 110. TC1C = TC1R = 30.
’
MOV
B0MOV
A,#01100000B
TC1M,A
MOV
B0MOV
B0MOV
A,#30
TC1C,A
TC1R,A
; Set the PWM duty to 30/256
B0BCLR
B0BCLR
B0BSET
B0BSET
FTC1OUT
FALOAD1
FPWM1OUT
FTC1ENB
; Set duty range as 0/256~255/256.
; Set the TC1 rate to Fcpu/4
; Enable PWM1 output to P5.3 and disable P5.3 I/O function
; Enable TC1 timer
Note: The TC1R is write-only register. Don’t process them using INCMS, DECMS instructions.
Example: Modify TC1R registers’ value.
’
MOV
B0MOV
A, #30H
TC1R, A
; Input a number using B0MOV instruction.
INCMS
NOP
B0MOV
B0MOV
BUF0
; Get the new TC1R value from the BUF0 buffer defined by
; programming.
A, BUF0
TC1R, A
Note: The PWM can work with interrupt request.
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8.4.4
PWM1 DUTY CHANGING NOTICE
In PWM mode, the system will compare TC1C and TC1R all the time. When TC1C<TC1R, the PWM will output logic
“High”, when TC1C≧TC1R, the PWM will output logic “Low”. If TC1C is changed in certain period, the PWM duty will
change immediately. If TC1R is fixed all the time, the PWM waveform is also the same.
TC1C = TC1R
TC1C overflow
and TC1IRQ set
0xFF
TC1C Value
0x00
PWM1 Output
Period
1
2
3
4
5
6
7
Above diagram is shown the waveform with fixed TC1R. In every TC1C overflow PWM output “High, when TC1C≧
TC1R PWM output ”Low”.
’
Note: Setting PWM duty in program processing must be at the new cycle start.
SONiX TECHNOLOGY CO., LTD
Page 89
Version 1.4
SN8P2608
8-Bit Micro-Controller
If TC1R is changing in the program processing, the PWM waveform will became as following diagram.
TC1C < TC1R
PWM Low > High
TC1C > = TC1R
PWM High > Low
TC1C overflow
and TC1IRQ set
Update New TC1R!
Old TC1R < TC1C < New TC1R
Old TC1R
0xFF
Update New TC1R!
New TC1R < TC1C < Old TC1R
New TC1R
New TC1R
Old TC1R
TC1C Value
0x00
PWM1 Output
Period
1
1st PWM
2
Update PWM Duty
3
2nd PWM
4
Update PWM Duty
5
3th PWM
In period 2 and period 4, new Duty (TC1R) is set, but the PWM output waveform of period 2 and period 4 are wrong. In
period 2, the new TC1R value is greater than old TC1R value. If setting new TC1R is after PWM output “low”, system is
getting TC1C < TC1R result and making PWM output “high”. There are two high level periods in the cycle, and the
waveform is unexpected. Until next cycle, PWM outputs correct duty. In period 4, the new TC1R value is smaller than
the old TC1R value. If setting new TC1R is before PWM output “low”, system is getting TC1C≧TC1R result and
making PWM output “low”. In the cycle, the high duty is shorter than last cycle and longer than correct cycle. It is an
unexpected PWM output.
Though the wrong waveforms only exist in one cycle, it is still a problem for precise PWM application and might make
outside loading operations error. The solution is to load new TC1R after TC1 timer overflow. Using TC1IRQ status to
determine TC1 timer is overflow or not. When TC1IRQ becomes “1”, to set the new TC1R value into TC1R buffer, and
the unexpected PWM output is resolved.
Example: Using TC1 interrupt function to set new TC1R value for changing PWM duty.
MAIN:
…
B0MOV
…
…
TC1RBUF, A
; Load new PWM duty setting value into TC1RBUF.
INT_SER:
…
…
B0BTS1
JMP
B0MOV
B0MOV
…
…
; Push routine to save ACC and PFLAG to buffers.
FTC1IRQ
INT_SER90
A, TC1RBUF
TC1R, A
; When TC1 Interrupt occurs, update TC1R.
INT_SER90:
…
RETI
SONiX TECHNOLOGY CO., LTD
; Pop routine to load ACC and PFLAG from buffers.
Page 90
Version 1.4
SN8P2608
8-Bit Micro-Controller
9
Field
M
O
V
E
A
R
I
T
H
M
E
T
I
C
L
O
G
I
C
P
R
O
C
E
S
S
B
R
A
N
C
H
INSTRUCTION TABLE
Mnemonic
MOV
A,M
MOV
M,A
B0MOV
A,M
B0MOV
M,A
MOV
A,I
B0MOV
M,I
XCH
A,M
B0XCH
A,M
MOVC
A←M
M←A
A ← M (bank 0)
M (bank 0) ← A
A←I
M ← I, “M” only supports 0x80~0x87 registers (e.g. PFLAG,R,Y,Z…)
A ←→M
A ←→M (bank 0)
R, A ← ROM [Y,Z]
Description
C
-
DC
-
Z
√
√
-
Cycle
1
1
1
1
1
1
1+N
1+N
2
ADC
ADC
ADD
ADD
B0ADD
ADD
SBC
SBC
SUB
SUB
SUB
A,M
M,A
A,M
M,A
M,A
A,I
A,M
M,A
A,M
M,A
A,I
A ← A + M + C, if occur carry, then C=1, else C=0
M ← A + M + C, if occur carry, then C=1, else C=0
A ← A + M, if occur carry, then C=1, else C=0
M ← A + M, if occur carry, then C=1, else C=0
M (bank 0) ← M (bank 0) + A, if occur carry, then C=1, else C=0
A ← A + I, if occur carry, then C=1, else C=0
A ← A - M - /C, if occur borrow, then C=0, else C=1
M ← A - M - /C, if occur borrow, then C=0, else C=1
A ← A - M, if occur borrow, then C=0, else C=1
M ← A - M, if occur borrow, then C=0, else C=1
A ← A - I, if occur borrow, then C=0, else C=1
√
√
√
√
√
√
√
√
√
√
√
-
√
√
√
√
√
√
√
√
√
√
√
1
1+N
1
1+N
1+N
1
1
1+N
1
1+N
1
A ← A and M
M ← A and M
A ← A and I
A ← A or M
M ← A or M
A ← A or I
A ← A xor M
M ← A xor M
A ← A xor I
√
√
√
√
√
√
√
√
√
√
√
-
AND
AND
AND
OR
OR
OR
XOR
XOR
XOR
A,M
M,A
A,I
A,M
M,A
A,I
A,M
M,A
A,I
1
1+N
1
1
1+N
1
1
1+N
1
M
M
M
M
M
M
M
M.b
M.b
M.b
M.b
A (b3~b0, b7~b4) ←M(b7~b4, b3~b0)
M(b3~b0, b7~b4) ← M(b7~b4, b3~b0)
A ← RRC M
M ← RRC M
A ← RLC M
M ← RLC M
M←0
M.b ← 0
M.b ← 1
M(bank 0).b ← 0
M(bank 0).b ← 1
√
√
√
√
-
-
√
√
√
√
√
√
√
√
√
-
SWAP
SWAPM
RRC
RRCM
RLC
RLCM
CLR
BCLR
BSET
B0BCLR
B0BSET
1
1+N
1
1+N
1
1+N
1
1+N
1+N
1+N
1+N
CMPRS
CMPRS
INCS
INCMS
DECS
DECMS
BTS0
BTS1
B0BTS0
B0BTS1
JMP
CALL
A,I
A,M
M
M
M
M
M.b
M.b
M.b
M.b
d
d
ZF,C ← A - I, If A = I, then skip next instruction
ZF,C ← A – M, If A = M, then skip next instruction
A ← M + 1, If A = 0, then skip next instruction
M ← M + 1, If M = 0, then skip next instruction
A ← M - 1, If A = 0, then skip next instruction
M ← M - 1, If M = 0, then skip next instruction
If M.b = 0, then skip next instruction
If M.b = 1, then skip next instruction
If M(bank 0).b = 0, then skip next instruction
If M(bank 0).b = 1, then skip next instruction
PC15/14 ← RomPages1/0, PC13~PC0 ← d
Stack ← PC15~PC0, PC15/14 ← RomPages1/0, PC13~PC0 ← d
√
√
-
-
√
√
-
1+S
1+S
1+ S
1+N+S
1+ S
1+N+S
1+S
1+S
1+S
1+S
2
2
√
-
√
-
√
-
2
2
1
1
1
RET
PC ← Stack
RETI
PC ← Stack, and to enable global interrupt
PUSH
To push ACC and PFLAG (except NT0, NPD bit) into buffers.
POP
To pop ACC and PFLAG (except NT0, NPD bit) from buffers.
NOP
No operation
Note: 1. “M” is system register or RAM. If “M” is system registers then “N” = 0, otherwise “N” = 1.
2. If branch condition is true then “S = 1”, otherwise “S = 0”.
M
I
S
C
SONiX TECHNOLOGY CO., LTD
Page 91
Version 1.4
SN8P2608
8-Bit Micro-Controller
10 ELECTRICAL CHARACTERISTIC
10.1 ABSOLUTE MAXIMUM RATING
Supply voltage (Vdd)………………………………………………………………………………….………………………………………………… - 0.3V ~ 6.0V
Input in voltage (Vin)…………………………………………………………………………………………………………………….… Vss – 0.2V ~ Vdd + 0.2V
Operating ambient temperature (Topr)
SN8P2608P, SN8P2608X, SN8P2606P ………………………………………………………………………………………………….. 0°C ~ + 70°C
SN8P2608PD, SN8P2608XD, SN8P2606PD ……………………………………………………………………………………………. –40°C ~ + 85°C
Storage ambient temperature (Tstor) ………………………………………………………………….………………………………………… –40°C ~ + 125°C
10.2 ELECTRICAL CHARACTERISTIC
(All of voltages refer to Vss, Vdd = 5.0V, fosc = 4MHz, ambient temperature is 25°C unless otherwise note.)
PARAMETER
SYM.
DESCRIPTION
MIN.
TYP.
Operating voltage
Vdd
RAM Data Retention voltage
Vdd rise rate
Vdr
Vpor
ViL1
ViL2
ViH1
Input Low Voltage
Normal mode, Vpp = Vdd, 25°C
MAX.
UNIT
2.4
5.0
5.5
V
Vdd rise rate to ensure internal power-on reset
All input ports
Reset pin
All input ports
2.5
1.5
0.05
Vss
Vss
0.7Vdd
5.0
-
5.5
0.3Vdd
0.2Vdd
Vdd
V
V
V/ms
V
V
V
Normal mode, Vpp = Vdd, -40°C~85°C
Input High Voltage
ViH2
Reset pin
0.9Vdd
-
Vdd
V
Reset pin leakage current
Ilekg
Rup
I/O port input leakage current
I/O output source current
sink current
INTn trigger pulse width
Ilekg
IoH
IoL
Tint0
100
50
8
8
2/fcpu
-
200
100
12
15
2.5
2
300
150
2
5
uA
I/O port pull-up resistor
Vin = Vdd
Vin = Vss , Vdd = 3V
Vin = Vss , Vdd = 5V
Pull-up resistor disable, Vin = Vdd
Vop = Vdd – 0.5V
Vop = Vss + 0.5V
INT0 interrupt request pulse width
Vdd= 5V, 4Mhz
normal Mode
(No loading,
Vdd= 3V, 4Mhz
Fcpu = Fosc/4)
Slow Mode
Vdd= 5V, 32Khz
(Internal low RC, Stop
Vdd= 3V, 16Khz
high clock)
Vdd= 5V, 25°C
Vdd= 3V , 25°C
Sleep Mode
Vdd= 5V, -40°C~85°C
Vdd= 3V , -40°C~85°C
Vdd= 5V, 4Mhz
Green Mode
cycle
mA
Idd1
Idd2
Supply Current
Idd3
Idd4
LVD detect level
VLVD
(No loading,
Fcpu = Fosc/4,
Watchdog Disable)
Vdd= 3V, 4Mhz
Vdd=5V, ILRC 32Khz
Vdd=3V, ILRC 16Khz
Low voltage detect level
KΩ
uA
mA
-
1
2
mA
-
25
50
uA
-
5
10
uA
-
1
0.7
10
10
0.50
2
1.5
21
21
1
uA
uA
uA
uA
mA
-
0.20
0.4
mA
1.4
15
3
1.8
30
6
2.3
uA
uA
V
*These parameters are for design reference, not tested.
SONiX TECHNOLOGY CO., LTD
Page 92
Version 1.4
SN8P2608
8-Bit Micro-Controller
10.3 CHARACTERISTIC GRAPHS
The Graphs in this section are for design guidance, not tested or guaranteed. In some graphs, the data presented are
outside specified operating range. This is for information only and devices are guaranteed to operate properly only
within the specified range.
SN8P2608
VDD
5 .5
5 .0
4 .5
Wo rk ing area
4 .0
3 .5
3 .0
2 .5
Fcp u
2 .0
1M
2M
4M
8M
1 2M
16 M
Working Voltage vs. Frequency
(Noise Filter Disable、25℃)
SONiX TECHNOLOGY CO., LTD
Page 93
Version 1.4
SN8P2608
8-Bit Micro-Controller
11 APPLICATION NOTICE
11.1 Development Tool Version
11.1.1 ICE (In circuit emulation)
z
S8KD-2 ICE: S8KD-2 ICE is designed for SN8P1XXX series emulation. There are some limitations if use S8KD-2
ICE emulates SN8P2608/SN8P2606 please refer following S8KD-2 ICE emulation notice section
z
SN8ICE 2K: Full function emulates SN8P2608/SN8P2606
11.1.2 OTP Writer
z
Writer 3.0: Support SN8P2608/SN8P2606 but no Stand-alone mode.
z
Easy Writer V1.0: OTP programming is controlled by ICE without firmware upgrade suffers. Please refer easy
writer user manual for detailed information.
z
MP-Easy Writer V1.0: Stand-alone operation to support SN8P2608/SN8P2606 mass production
11.1.3 SN8IDE
SONiX 8-bit MCU integrated development environment include Assembler, ICE debugger and OTP writer software.
z
For S8KD-2 ICE: SN8IDE_V1.99R. SN8IDE V1.99S or later No More support SN8P2000 series emulation.
z
For SN8ICE 2K: M2IDE_V107 or later
z
For Writer 3.0 and Easy Writer: M2IDE_V107 or later
SONiX TECHNOLOGY CO., LTD
Page 94
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.2 CODE OPTION
11.2.1 NOISE FILTER CODE OPTION
In high AC noisy environment should enable Noise_Filter code option. Enable Noise_Filter can reduce external noise
affecting system of operating. If Noise_Filter enable, the Fcpu is limited in “Fosc/4~Fosc/8”.
Noise_Filter
Fcpu
Enable
Disable
Fosc/4~Fosc/8
Fosc/1~Fosc/8
11.2.2 WATCHDOG
Watchdog of SN8P2608 includes three operations as Enable, Disable, Always On controlled by code option.
¾
Watchdog Enable: If watchdog timer overflow during program running, the system resets. Watchdog timer stops
in green mode and power down mode (sleep mode). After system wake-up, watchdog timer is running again.
¾
Watchdog Always On: Watchdog timer keeps running in green mode or power down mode (sleep mode). If
watchdog overflow occurs under the two modes, the system would be reset. It is not easy to make system to keep
green mode/ power down mode situations. The main purpose of the design is supporting high AC noisy
application. The watchdog timer guards system to work well and good reliability in high noisy situation.
SONiX TECHNOLOGY CO., LTD
Page 95
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.3 INTERRUPT VECTOR (ORG 8)
When one of interrupt requests occurs, system will jump to interrupt vector and execute interrupt service routine. The
first instruction of interrupt vector (ORG 8) must be “JMP” or “NOP”. The SN8ASM199N and later version compilers
alerts the message if the interrupt vector first instruction is not “JMP” or “NOP”.
¾
Example: The interrupt service routine is following ORG 8.
.CODE
ORG
JMP
…
0
START
; 0000H
; Jump to user program address.
ORG
NOP
8
; Interrupt service routine
; The first instruction at ORG 8.
…
; End of interrupt service routine
RETI
…
START:
…
…
JMP
…
; The head of user program.
; User program
START
; End of program
ENDP
¾
; End of user program
Example: The interrupt service routine is following user program.
.CODE
ORG
JMP
…
0
START
; 0000H
; Jump to user program address.
ORG
JMP
08
MY_IRQ
; 0008H, Jump to interrupt service routine address.
ORG
10H
START:
…
…
…
JMP
…
; 0010H, The head of user program.
; User program.
START
MY_IRQ:
; End of user program.
;The head of interrupt service routine.
…
RETI
…
; End of interrupt service routine.
ENDP
; End of program.
SONiX TECHNOLOGY CO., LTD
Page 96
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.4 S8KD-2 ICE ENULATION
SN8IDE is SONIX 8-bit development software including Assembler/ICE Debugger/OTP Writer. S8KD-2 is SONIX 8-bit
ICE EV chip. There are different specifications between SN8P2608 and EV Chip. SONIX provides macros to solve the
difference and make emulation correct. SN8IDE_V1.99R_S8KD2 and later version support these macros.
’
Note:
1. Please use SN8IDE V1.99R to develop projects!
2. SN8IDE V1.99S or later No More support SN8P2000 series emulation.
11.4.1 ICE_MODE
ICE_MODE setting is necessary. ICE_MODE = 1 supports S8KD-2 ICE emulation. ICE_MODE = 0 is real chip mode.
Syntax: ICE_MODE Val
Val: 0 = Real chip. 1 = S8KD-2 ICE emulation.
¾
Example: Setting ICE mode for ICE emulation. After compiling, the code only supports ICE emulation and
can’t work correct in real chip.
CHIP
.DATA
SN8P2608
ICE_MODE
EQU
1
INCLUDESTD
SN8P2X_ICE.H
; Set ICE_MODE for ICE emulation.
.CODE
User program
…
¾
Example: Setting ICE mode for real chip. After compiling, the code only supports SN8P2608 and can’t
work correct in ICE emulation.
CHIP
.DATA
SN8P2608
ICE_MODE
EQU
0
INCLUDESTD
SN8P2X_ICE.H
; Set ICE_MODE for real chip.
.CODE
User program
…
’
Note:1. After ICE emulation and verifying all functions, set ICE_MODE = 0 and compile firmware again
for real chip programming.
2. Please use the ICE_MODE = 0 checksum for real chip code. Don’t use ICE_MODE = 1 checksum
which only support ICE emulation, not real chip.
SONiX TECHNOLOGY CO., LTD
Page 97
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.4.2 INSTRUCTION CYCLE
Instruction cycles of some instructions are different between SN8P2608/2606 and EV chip. These differences makes
ICE instruction timing isn’t consistent with SN8P2608/2606. SN8IDE assembler provides some macros to solve
instruction cycle difference as following. Users just only use built-in instruction macro to replace corresponding
instruction. In “ICE_MODE EQU 1” ICE emulation mode, assembler maybe insert some extra code to synchronize
instruction timing between ICE and real chip. Therefore, the maximum available ROM size is larger than real chip. In
“ICE_MODE EQU 0” the ROM size is same as real chip.
Field
M
O
V
E
A
R
I
T
H
M
E
T
I
C
L
O
G
I
C
P
R
O
C
E
S
S
B
R
A
N
C
H
M
I
S
C
SN8P2608
Mnemonic
MOV
A,M
MOV
M,A
B0MOV
A,M
B0MOV
M,A
MOV
A,I
B0MOV
M,I
XCH
A,M
B0XCH
A,M
MOVC
ADC
A,M
ADC
M,A
ADD
A,M
ADD
M,A
B0ADD
M,A
ADD
A,I
SBC
A,M
SBC
M,A
SUB
A,M
SUB
M,A
SUB
A,I
AND
A,M
AND
M,A
AND
A,I
OR
A,M
OR
M,A
OR
A,I
XOR
A,M
XOR
M,A
XOR
A,I
SWAP
M
SWAPM
M
RRC
M
RRCM
M
RLC
M
RLCM
M
CLR
M
BCLR
M.b
BSET
M.b
B0BCLR
M.b
B0BSET
M.b
CMPRS
A,I
CMPRS
A,M
INCS
M
INCMS
M
DECS
M
DECMS
M
BTS0
M.b
BTS1
M.b
B0BTS0
M.b
B0BTS1
M.b
JMP
d
CALL
d
RET
RETI
NOP
PUSH
POP
Cycle
1
1
1
1
1
1
1+N
1+N
2
1
1+A
1
1+N
1+N
1
1
1+N
1
1+N
1
1
1+N
1
1
1+N
1
1
1+N
1
1
1+N
1
1+N
1
1+N
1
1+N
1+N
1+N
1+N
1+S
1+S
1+S
1+N+S
1+S
1+N+S
1+S
1+S
1+S
1+S
2
2
2
2
1
1
1
SONiX TECHNOLOGY CO., LTD
Field
M
O
V
E
A
R
I
T
H
M
E
T
I
C
L
O
G
I
C
P
R
O
C
E
S
S
B
R
A
N
C
H
M
I
S
C
S8KD-2 EV CHIP
Mnemonic
MOV
A,M
MOV
M,A
B0MOV
A,M
B0MOV
M,A
MOV
A,I
B0MOV
M,I
XCH
A,M
B0XCH
A,M
MOVC
ADC
A,M
ADC
M,A
ADD
A,M
ADD
M,A
B0ADD
M,A
ADD
A,I
SBC
A,M
SBC
M,A
SUB
A,M
SUB
M,A
SUB
A,I
AND
A,M
AND
M,A
AND
A,I
OR
A,M
OR
M,A
OR
A,I
XOR
A,M
XOR
M,A
XOR
A,I
SWAP
M
SWAPM
M
RRC
M
RRCM
M
RLC
M
RLCM
M
CLR
M
BCLR
M.b
BSET
M.b
B0BCLR
M.b
B0BSET
M.b
CMPRS
A,I
CMPRS
A,M
INCS
M
INCMS
M
DECS
M
DECMS
M
BTS0
M.b
BTS1
M.b
B0BTS0
M.b
B0BTS1
M.b
JMP
d
CALL
d
RET
RETI
NOP
PUSH
POP
Page 98
Cycle
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1+S
1+S
1+S
1+S
1+S
1+S
1+S
1+S
1+S
1+S
2
2
2
2
1
1
1
INSTRUCTION
MACRO
@XCH A,M
@B0XCH A,M
@ADC M,A
@ADD M,A
@B0ADD M,A
@SBC M,A
@SUB M,A
@AND M,A
@OR M,A
@XOR M,A
@SWAPM M
@RRCM M
@RLCM M
@BSET M.b
@BCLR M.b
@B0BSET M.b
@B0BCLR M.b
@INCMS M
@DECMS M
-
DESCRIPTION
1.
M = RAM, N = 0.
M = system
register, N = 1.
2.
S8KD-2 ICE:
Read OSCM = 1
cycle
Write OSCM = 2
cycle
SN8P2608:
Read OSCM = 1
cycle
Write OSCM = 1
cycle
3.
PUSH,POP
instructions
are
different between
SN8P2608
and
S8KD-2 ICE.
Version 1.4
SN8P2608
8-Bit Micro-Controller
’
Note: S8KD-2 ICE can’t emulate SN8P2608’s “PUSH, POP” instructions.
’
Note: The instruction macros of above table are built in “SN8P2X_ICE.H”. The file must be included in
user program.
¾
Example: Including SN8P2X_ICE.H in user program.
CHIP
.DATA
ICE_MODE
SN8P2608
EQU
0
INCLUDESTD
SN8P2X_ICE.H
; SN8P2X_ICE.H is a standard macro file and included by
“INCLUDESTD”.
.CODE
User program…
…
¾
Example: Instructions are replaced by instruction macro.
CHIP
.DATA
ICE_MODE
SN8P2608
EQU
0
INCLUDESTD
SN8P2X_ICE.H
.CODE
User program…
;
;
ADD
@ADD
…
AND
@AND
…
BUF1, A
BUF1, A
; “ADD M,A” is replaced by “@ADD M,A”.
BUF1, A
BUF1, A
; “AND M,A” is replaced by “@AND M,A”.
SONiX TECHNOLOGY CO., LTD
Page 99
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.4.3 SYSTEM CLOCK
SONIX 2 series 8-bit MCU has multi-system clock (Fosc/1~Fosc/8,Fosc/64,Fosc/8,), but ICE is fixed Fosc/4. In ICE
emulation, user must be sure the Fcpu speeds of SN8P2608 and ICE are identical. Before emulation, change ICE
crystal frequency to match with SN8P2608 system clock.
¾
Example: SN8P2608 system clock vs. ICE Table. The SN8P2608 clock source frequency is external 4MHz
crystal.
SN8P2604 Fcpu Option
Fosc/1
Fosc/2
Fosc/4
Fosc/8
Fcpu Frequency
4MHz
2MHz
1MHz
0.5MHz
ICE Fcpu
Fosc/4
Fosc/4
Fosc/4
Fosc/4
ICE Crystal Frequency
16MHz
8MHz
4MHz
2MHz
’
Note: For different speed crystals, modifying ICE “HIGH CLK” option is necessary. If ICE crystal is
16MHz, set “HIGH CLK” options to “X’TAL 12M”.
¾
Example: SN8P2608 system clock vs. ICE Table. The SN8P2608 clock source frequency is external 16MHz
crystal.
SN8P2604 Fcpu Option
Fosc/1
Fosc/2
Fosc/4
Fosc/8
’
Fcpu Frequency
16MHz
8MHz
4MHz
2MHz
ICE Fcpu
Fosc/4
Fosc/4
Fosc/4
Fosc/4
ICE Crystal Frequency
16MHz
8MHz
Note: ICE external high clock crystal is up to 16MHz. Fcpu = Fosc/1 and Fosc/2 can’t be emulated. For
the applications, users should use SN8P2608 to verify functions.
SONiX TECHNOLOGY CO., LTD
Page 100
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.4.4 WATCHDOG TIMER
Watchdog timer clear routine of SN8P2608 is setting WDTR register 0x5A. S8KD-2 ICE is not. SN8IDE provides
“@RST_WDT” macro to make watchdog timer function correctly.
¾
Example: Reset watchdog timer by setting WDTR as 0x5A.
CHIP
.DATA
ICE_MODE
SN8P2608
EQU
0
INCLUDESTD
SN8P2X_ICE.H
.CODE
User program…
MOV
B0MOV
A, #5Ah
WDTR, A
; Reset watchdog timer.
…
’
Note: This way can’t be emulated in S8KD-2 ICE. Using following routine to replace it.
¾
Example: Reset watchdog timer by “@RST_WDT”.
CHIP
.DATA
ICE_MODE
SN8P2608
EQU
0
INCLUDESTD
SN8P2X_ICE.H
.CODE
User program…
@RST_WDT
; Reset watchdog timer by macro.
…
SONiX TECHNOLOGY CO., LTD
Page 101
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.4.5 P0 EMULATION
SN8P2608’s P0 is bi-direction I/O, but ICE’s P0 is input only. PEDGE controls are different, too. SN8IDE provides
macros to control P0 emulation. These macros are built in assembler software.
11.4.5.1 @P0n_MODE
Syntax: @P0n_MODE
Val
(n = 0~7)
Val: 0 = Set P0.n input mode. 1 = Set P0.n output mode.
¾
Example: Set P0.0 as input mode.
@P00_MODE
0
’
Note: If P0 set as input mode, the input pins are P0.0~P0.7 of S8KD-2 ICE.
¾
Example: Set P0.0 as output mode.
@P00_MODE
’
1
Note: If P0 set as output mode, the output pins are P6.0~P6.7 of S8KD-2 ICE.
11.4.5.2 @P0n_OUT
Syntax: @P0n0_OUT
Val
(n = 0~7)
Val: 0 = Set P0.n0 output low. 1 = Set P0.n output high.
¾
Example: Set P0.0 as output high.
@P00_OUT
’
1
Note: Under P0 output mode, the signals are output from P6.0~P6.7 of S8KD-2 ICE.
SONiX TECHNOLOGY CO., LTD
Page 102
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.4.5.3 PEDGE
P00G[1:0] of PEDGE register definition is different from S8KD-2 ICE. ICE emulation and real chip PEDGE function are
different.
PEDGE
P00G1 P00G0
0
0
0
1
1
0
1
1
SN8P2608
S8KD-2 ICE
Reserved
Rising Edge
Falling Edge
Bi-Direction
Reserved
Falling Edge
Rising Edge
Bi-Direction
SONIX provides “@P00_EDGE” macro to emulate real chip PEDGE function in ICE. The ICE_MODE must be 1 for
ICE Emulation. After ICE emulation, set ICE_MODE as 0 and compile again to get SN8 file for real chip.
Syntax: @P00_EDGE
Val
Val: 1 = Rising edge. 2 = Falling edge. 3 = Level change (bi-direction).
¾
Example: Set P0.0 interrupt trigger as rising edge and ICE emulation.
CHIP
.DATA
ICE_MODE
SN8P2608
EQU
1
INCLUDESTD
SN8P2X_ICE.H
; Set ICE mode.
.CODE
User program…
@P00_EDGE
B0BSET
…
¾
1
FP00IEN
; Set P0.0 interrupt trigger as rising edge.
Example: Set P0.0 interrupt trigger as falling edge and for real chip “SN8”.
CHIP
.DATA
ICE_MODE
SN8P2608
EQU
0
INCLUDESTD
SN8P2X_ICE.H
; Set real chip mode.
.CODE
User program…
@P00_EDGE
B0BSET
…
2
FP00IEN
SONiX TECHNOLOGY CO., LTD
; Set P0.0 interrupt trigger as falling edge.
Page 103
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.4.6 PWM DUTY
PWM duty of SN8P2608 is controlled by ALOAD1, TC1OUT bits.
PWM1OUT = 1
ALOAD1 TC1OUT TC1R Boundary PWM duty range
0
0
1
1
0
1
0
1
00h to FFh
00h to 3Fh
00h to 1Fh
00h to 0Fh
0/256 ~ 255/256
0/64 ~ 63/64
0/32 ~ 31/32
0/16 ~ 15/16
Max PWM
Frequency
(Fcpu = 4M)
7.8125K
31.25K
62.5K
125K
Note
Overflow per 256 count
Overflow per 64 count
Overflow per 32 count
Overflow per 16 count
S8KD-2 ICE doesn’t support PWM duty setting function. SONIX provides PWM Duty setting macro. Users can use it to
emulate PWM function and don’t affect other functions. The macro is built in assembler software. Users have to set
ICE_MODE as ICE or real chip.
Syntax: @PWM1_MAX_DUTY
Max_Duty
256
64
32
16
¾
Max_Duty
TC1 Overflow
Boundary
FFh to 00h
3Fh to 40h
1Fh to 20h
0Fh to 10h
PWM Duty Range
PWM Resolution
0/256 ~ 255/256
0/64 ~ 63/64
0/32 ~ 31/32
0/16 ~ 15/16
8-bit
6-bit
5-bit
4-bit
Example: Set PWM Max. Duty = 64,Duty = 2:1.
CHIP
.DATA
ICE_MODE
SN8P2608
EQU
0
; Set real chip mode.
INCLUDESTD
SN8P2X_ICE.H
.CODE
User program…
@PWM1_MAX_DUTY
64
; Set PWM1 max. duty as 64.
MOV
B0MOV
B0BSET
B0BSET
…
A,#42
TC1R,A
FPWM1OUT
FTC1ENB
; 42 = 63 (Max. TC1R) / 3 X 2
SONiX TECHNOLOGY CO., LTD
Page 104
Version 1.4
SN8P2608
8-Bit Micro-Controller
11.4.7 OTHER MACRO
A macro routine includes many instructions. It will be error after test instruction with skipping function.
BTS0
@RST_WDT
JMP
…
BUF.0
TEST_CODE
TEST_CODE:
…
BTS0 instruction skipping function only skip one instruction. @RST_WDT is a macro and composed of several
instructions. The skipping function of above routine would be error. It can’t skip to “JMP TEST_CODE” successfully.
Using following routines can solve the problem.
BTS0
JMP
JMP
…
BUF.0
CLR_WDT
TEST_CODE
CLR_WDT:
@RST_WDT
…
TEST_CODE:
…
SN8IDE provides user defined forward/backward jump directive to processing skipping function easier. “Macro_Start”
and “Macro_End” is user define label name. Using @@.Macro_Start and @@.Macro_End to syntax. These lable
names can be repeated in main program.
BTS0
JMP
JMP
…
BUF.0
@F.Macro_Start
@F.Macro_End
; Jump to nearest user define @@.Macro_Start:
; Jump to nearest user define @@.Macro_End:
@@.Macro_Start:
@RST_WDT
@@.Macro_End:
TEST_CODE:
…
’
Note: Only S8ASM V1.99N or later version support user defined forward/backward jump directive!
’
Note: Macro possible affects Accumulator and PFLAG result. Users have to check it!
SONiX TECHNOLOGY CO., LTD
Page 105
Version 1.4
SN8P2608
8-Bit Micro-Controller
12 OTP PROGRAMMING PIN
12.1.1 The pin assignment of Easy Writer transition board socket:
Easy Writer JP1/JP2
VSS 2
CE 4
OE/ShiftDat 6
D0 8
D2 10
D4 12
D6 14
VPP 16
RST 18
ALSB/PDB 20
Easy Writer JP3 (Mapping to 48-pin text tool)
1 VDD
3 CLK/PGCLK
5 PGM/OTPCLK
7 D1
9 D3
11 D5
13 D7
15 VDD
17 HLS
19 -
JP1 for MP transition board
JP2 for Writer V3.0 transition board
DIP1
1
48
DIP48
DIP2
2
47
DIP47
DIP3
3
46
DIP46
DIP4
4
45
DIP45
DIP5
5
44
DIP44
DIP6
6
43
DIP43
DIP7
7
42
DIP42
DIP8
8
41
DIP41
DIP9
9
40
DIP40
DIP10
10 39
DIP39
DIP11
11 38
DIP38
DIP12
12 37
DIP38
DIP13
13 36
DIP36
DIP14
14 35
DIP35
DIP15
15 34
DIP34
DIP16
16 33
DIP33
DIP17
17 32
DIP32
DIP18
18 31
DIP31
DIP19
19 30
DIP30
DIP20
20 29
DIP29
DIP21
21 28
DIP28
DIP22
22 27
DIP27
DIP23
23 26
DIP26
DIP24
24 25
DIP25
JP3 for MP transition board
12.1.2 The pin assignment of Writer V3.0 and V2.5 transition board socket:
GND
CE
OE
D0
D2
D4
D6
VPP
RST
1
3
5
7
9
11
13
15
17
2
4
6
8
10
12
14
16
18
GND
CE
OE
D0
D2
D4
D6
VPP
RST
VDD
CLK
PGM
D1
D3
D5
D7
VDD
HLS
Writer V2.5 JP1 Pin Assignment
’
2
4
6
8
10
12
14
16
18
20
1
3
5
7
9
11
13
15
17
19
VDD
CLK
PGM
D1
D3
D5
D7
VDD
HLS
Writer V3.0 JP1 Pin Assignment
Note: For supporting the body programming, SONIX writer V2.5 must update V3.0 firmware and modify
circuit. Please contact SONIX agent about SONIX Writer V2.5 upgrade.
SONiX TECHNOLOGY CO., LTD
Page 106
Version 1.4
SN8P2608
8-Bit Micro-Controller
12.1.3 SN8P2608/SN8P2606 Programming Pin Mapping:
Programming Information of SN8P2600A Series
Chip Name
SN8P2606
SN8P2608
EZ Writer / Writer
Writer V2.5
OTP IC / JP3 Pin Assigment
V3.0
Connector
Connector
Number Name Number Name
Number Pin Number Pin
2
VDD
1
VDD
11,32
VDD 13,39 VDD
1
GND
2
GND
12,31
VSS
14,36
VSS
4
CLK
3
CLK
21
P5.0
25
P5.0
3
CE
4
CE
6
PGM
5
PGM
40
P1.0
1
P1.0
5
OE
6
OE
20
P5.1
24
P5.1
8
D1
7
D1
7
D0
8
D0
10
D3
9
D3
9
D2
10
D2
12
D5
11
D5
11
D4
12
D4
14
D7
13
D7
13
D6
14
D6
16
VDD
15
VDD
15
VPP
16
VPP
1
RST
2
RST
18
HLS
17
HLS
17
RST
18
RST
19
20 ALSB/PDB
2
P1.1
3
P1.1
SONiX TECHNOLOGY CO., LTD
Page 107
Version 1.4
SN8P2608
8-Bit Micro-Controller
13 PACKAGE INFORMATION
13.1 SSOP 48 PIN
SYMBOLS
A
A1
A2
b
C
D
E
[e]
He
L
L1
Y
θ°
MIN
NOR
MAX
MIN
(inch)
0.095
0.008
0.089
0.008
0.620
0.291
0.396
0.020
0°
SONiX TECHNOLOGY CO., LTD
0.102
0.012
0.094
0.010
0.008
0.625
0.295
0.025
0.406
0.030
0.056
-
NOR
MAX
(mm)
0.110
0.016
0.099
0.030
0.630
0.299
0.416
0.040
0.003
8°
Page 108
2.413
0.203
2.261
0.203
15.748
7.391
10.058
0.508
0°
2.591
0.305
2.388
0.254
0.203
15.875
7.493
0.635
10.312
0.762
1.422
-
2.794
0.406
2.515
0.762
16.002
7.595
10.566
1.016
0.076
8°
Version 1.4
SN8P2608
8-Bit Micro-Controller
13.2 P-DIP 40 PIN
SYMBOLS
MIN
NOR
MAX
MIN
(inch)
A
A1
A2
D
E
E1
L
0.015
0.150
2.055
MAX
(mm)
0.220
0.160
2.070
0.381
3.810
52.197
0.540
0.115
0.115
2.060
0.600
0.545
0.130
0.550
0.150
eB
0.630
0.650
θ°
0°
7°
SONiX TECHNOLOGY CO., LTD
NOR
5.588
4.064
52.578
13.716
2.921
2.921
52.324
15.240
13.843
3.302
0.067
16.002
16.510
1.702
15°
0°
7°
15°
Page 109
13.970
3.810
Version 1.4
SN8P2608
8-Bit Micro-Controller
14 Marking Definition
14.1
INTRODUCTION
There are many different types in Sonix 8-bit MCU production line. This note listed the production definition of all 8-bit
MCU for order or obtain information. This definition is only for Blank OTP MCU.
14.2
MARKING INDETIFICATION SYSTEM
SN8 X PART No. X X X
Material
B = PB-Free Package
G = Green Package
Temperature
Range
- = 0℃ ~ 70℃
Shipping
Package
Device
SONiX TECHNOLOGY CO., LTD
D = -40℃ ~ 85℃
W = Wafer
H = Dice
P = P-DIP
X = SSOP
2606
2608
ROM
Type
P=OTP
Title
SONiX 8-bit MCU Production
Page 110
Version 1.4
SN8P2608
8-Bit Micro-Controller
14.3
MARKING EXAMPLE
Name
SN8P2608PB
SN8P2608XDB
ROM Type
OTP
OTP
Device
2608
2608
Package
P-DIP
SSOP
Temperature
0℃~70℃
-40℃~85℃
Material
PB-Free Package
PB-Free Package
14.4 DATECODE SYSTEM
X X X X XXXXX
SONiX Internal Use
1=01
2=02
....
9=09
A=10
B=11
....
Day
Month
Year
SONiX TECHNOLOGY CO., LTD
1=January
2=February
....
9=September
A=October
B=November
C=December
03= 2003
04= 2004
05= 2005
06= 2006
....
Page 111
Version 1.4
SN8P2608
8-Bit Micro-Controller
SONIX reserves the right to make change without further notice to any products herein to improve reliability, function or
design. SONIX does not assume any liability arising out of the application or use of any product or circuit described herein;
neither does it convey any license under its patent rights nor the rights of others. SONIX products are not designed,
intended, or authorized for us as components in systems intended, for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SONIX product could create a
situation where personal injury or death may occur. Should Buyer purchase or use SONIX products for any such
unintended or unauthorized application. Buyer shall indemnify and hold SONIX and its officers , employees, subsidiaries,
affiliates and distributors harmless against all claims, cost, damages, and expenses, and reasonable attorney fees arising
out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use
even if such claim alleges that SONIX was negligent regarding the design or manufacture of the part.
Main Office:
Address: 9F, NO. 8, Hsien Cheng 5th St, Chupei City, Hsinchu, Taiwan R.O.C.
Tel: 886-3-551 0520
Fax: 886-3-551 0523
Taipei Office:
Address: 15F-2, NO. 171, Song Ted Road, Taipei, Taiwan R.O.C.
Tel: 886-2-2759 1980
Fax: 886-2-2759 8180
Hong Kong Office:
Address: Flat 3 9/F Energy Plaza 92 Granville Road, Tsimshatsui East Kowloon.
Tel: 852-2723 8086
Fax: 852-2723 9179
Technical Support by Email:
[email protected]
SONiX TECHNOLOGY CO., LTD
Page 112
Version 1.4