EMC EM78808 8-bitmicro-controller Datasheet

EM78808
8-BIT MICRO-CONTROLLER
Version 3.1
ELAN MICROELECTRONICS CORP.
No. 12, Innovation 1st RD., Science-Based Industrial Park
Hsin Chu City, Taiwan, R.O.C.
TEL: (03) 5639977
FAX: (03) 5630118
EM78808
8-bit Micro-controller
Version History
Specification Revision History
Version
Content
EM78808 ICE
1.0
Initial version
1.1
Add LCD 24x72 option
2.Change STACK layers from 16 to 32
1.3
Add Schmitt trigger transition curve for DTMF receiver
Remove SPI 32.768kHz spec.
3.Update application circuit
EM78808
1.0
Initial version
1.1
Add LCD 24x72 option
Change STACK layers from 16 to 32
1.2
Update description
1.3
Add Schmitt trigger transition curve
Remove SPI 32.768kHz spec.
Update application circuit
1.4
Update LCD driver ability spec.
1.5
Update feature description
Add test pin and separate analog/digital power
Update Fig.4, Fig.1
Update R9 page1 data ROM address
Update RE page1 data RAM address from 4k to 8k
Update application circuit
2.0
Add SPI 32.768k clock spec.
Add Energy Detector (DED)
Add 2.0V ref. circuit to Comparator
2.1
Add Stack Pointer (ROM less)
Update CODE Option Register
2.2
Add Short Message receiver
Update IOCE PAGE2
Update CODE Option Register
2.5
Update Application Note
Update package type
3.0
Add DED Function
Add BAQ and BBQ package
3.1
Remove Idle mode
Add application note item 8
Release Date
2001/02/09
2001/06/12
2001/08/08
2001/02/09
2001/06/12
2001/07/20
2001/08/08
2001/08/10
2001/08/29
2001/09/06
2001/11/19
2001/11/21
2002/4/25
2004/8/1
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
2
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
User Application Note
1. ROM, OTP, ICE
ROM
EM78808
OTP
EM78P808
ICE
EM78808 ICE
2. The difference between EM78R808A , EM78P808 and EM78808 are listed in the table
Comparator reference voltage
Stack pointer
Data ROM max access frequency
EM78R808A
VDD
X
10.74 MHz
EM78P808
VDD or 2V
O
10.74MHz
EM78808
VDD or 2V
X
3.58 MHz
3.For accessing data ROM,EM78P808 (OTP) can work at 10.74MHz, but please note that
ROM type EM78808 only can work at 3.58MHz
4. While switching main clock (regardless of high freq to low freq or on the other hand),
adding 6 instructions delay (NOP) is required.
6. For DATA ROM or DATA RAM least address(A0~A7), when using “INC”
instruction and overflow occur, the middle address will auto_increase. If using “DEC”
instruction and least address from 0x00 0xFF, the middle address can’t
auto_decrease.
7. Please do not switch MCU operation mode from normal mode to idle or sleep mode
directly. Before into idle or sleep mode, please switch MCU to green mode.
8. Please always keep RA page0 bit7 = 0 or un-expect error will happen!!
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
3
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
I.General Description
The EM78808 is an 8-bit CID (Call Identification) RISC type microprocessor with low power, high speed
CMOS technology. Integrated onto a single chip are on chip watchdog (WDT), RAM, program ROM, data
ROM, programmable real time clock/counter, external/internal interrupt, power down mode, LCD driver, FSK
decoder, Call waiting decoder, Energy Detector (DED) , DTMF receiver, Programming Tone generator,
build-in KEY TONE clock generation, Comparator and tri-state I/O. The EM78808 provides a single chip
solution to design a CID of calling message display.
II.Feature
CPU
•Operating voltage range : 2.2V~5.5V(Normal mode), 2.0V~5.5V(Green mode)
•32K×13 on chip Program ROM
•256K×8 on chip data ROM (2.5V ~ 5.5V for main clock 3.5826MHz)
•8K×8 on chip data RAM
•144 byte working register
•Up to 51 bi-directional tri-state I/O ports (32 shared with LCD Segment pins)
•IO with internal Pull high, wake-up and interrupt functions
•STACK: 32 level stack for subroutine nesting
•TCC: 8-bit real time clock/counter (TCC) with 8-bit prescaler
•COUNTER1: 8-bit counter with 8-bit prescaler can be an interrupt source
•COUNTER2: 8-bit counter with 8-bit prescaler can be an interrupt source
•Watch Dog : Programmable free running on chip watchdog timer
•CPU modes:
Mode
CPU status
Main clock
32.768kHz clock status
Sleep mode
Turn off
Turn off
Turn off
Green mode
Turn on
Turn off
Turn on
Normal mode Turn on
Turn on
Turn on
•13 interrupt source , 8 external , 5 internal
•Key Scan : Port key scan function up to 16x4 keys
•Sub-Clock: 32.768KHz crystal
•Main-clock: 3.5862MHz multiplied by 0.25, 0.5, 1 or 3 generated by internal PLL
•Key tone output :4KHz, 2KHz ,1KHz (shared with IO)
•Comparator: 3-channel comparators: internal (16 level) or external reference voltage. (shared with IO)
•Serial Peripheral Interface (SPI): Interrupt flag available for the read buffer full, Programmable baud rates of
communication, Three-wire synchronous communication. (shared with IO)
•An OP inside (shared with IO)
Current D/A
•Operation Voltage : 2.5V∼5.5V
•7-bit resolution and 3-bit output level control
•Current DA output can drive speaker through a transistor for sound playing. (shared with IO)
Programmable Tone Generators
•Operation Voltage 2.2V∼5.5V
•Programmable Tone1 and Tone2 generators
•Independent single tone generation for Tone1 and Tone2
•Mixed dual tone generation by Tone1 and Tone2 with 2dB difference
•Can be programmed for DTMF tone generation
•Can be programmed for FSK signal (Bell202 or V.23) generation
CID
•Operation Voltage 2.7V∼5.5V for FSK
•Operation Voltage 2.7V∼5.5V for DTMF receiver
•Compatible with Bellcore GR-30-CORE (formerly as TR-NWT-000030)
•Compatible with British Telecom (BT) SIN227 & SIN242
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
4
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
•FSK demodulator for Bell 202 and ITU-T V.23 (formerly as CCITT V.23)
•Differential Energy Detector (DED) for line energy detection
CALL WAITING
•Operation Voltage 2.6V∼5.5V
•Compatible with Bellcore special report SR-TSV-002476
•Call-Waiting (2130Hz plus 2750Hz) Alert Signal Detector
•Good talkdown and talkoff performance
•Sensitivity compensated by adjusting input OP gain
LCD (8x80, 9x80, 16x80, 24x72)
•Maximum common driver pins : 16/24
•Maximum segment driver pins : 80(SEG0..SEG79)/72(SEG8..SEG79)
•Shared COM16 ~ COM23 pins with SEG0 ~ SEG7 pins
•1/4 bias for 8, 9 and 16 common mode and 1/5 bias for 24 common mode
•1/8, 1/9, 1/16, 1/24 duty
•16 Level LCD contrast control (software)
•Internal resistor circuit for LCD bias
•Internal voltage follower for better display
Package type
•136 pin Chip : EM78808BH
•128 pin QFP : (EM78808AAQ , POVD disable) (EM78808ABQ , POVD enable)
•128 pin QFP : (EM78808BAQ , POVD disable) (EM78808BBQ , POVD enable)
III.Application
1. adjunct units
2. answering machines
3. feature phones
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
5
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
SEG41
106
SEG35
SEG36
SEG39
SEG40
SEG34
112
111
108
107
SEG33
113
SEG37
SEG32
114
SEG38
SEG31
115
109
SEG30
117
116
110
SEG28
SEG29
118
120
121
119
SEG25
SEG26
SEG27
122
SEG21
SEG22
SEG23
SEG24
126
125
124
123
SEG18
129
SEG19
SEG16
SEG17
131
130
SEG20
SEG14
SEG15
127
SEG13
133
128
SEG12
134
132
SEG11
135
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
60
61
62
63
64
65
66
67
68
P71/INT0
P70/INT0
VC1
VC2
VC3
VC4
VC5
SEG79/P97
56
P76/INT1
P75/INT1
59
55
P73/INT0
P72/INT0
54
P77/INT2
57
58
53
TEST
/RESET
P74/INT1
52
P67/KTONE
P66/DAOUT
49
50
51
P64/CMP2
P65/CMP3
46
47
48
45
P60/SCK
P61/SDO
P62/SDI
P63/CMP1
43
44
P56/OP+/EST
P55/OP-/STGT
P57/OPO
AVSS
GND
41
42
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
40
SEG10
SEG9
SEG8
COM23/SEG7
COM22/SEG6
COM21/SEG5
COM20/SEG4
COM19/SEG3
COM18/SEG2
COM17/SEG1
COM16/SEG0
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM0
XIN
XOUT
VDD
AVDD
PLLC
TONE
EGIN1
EGIN2
TIP
RING
CWGS
CWIN
136
IV.Pin Configuration
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48/PB0
SEG49/PB1
SEG50/PB2
SEG51/PB3
SEG52/PB4
SEG53/PB5
SEG54/PB6
SEG55/PB7
SEG56/PC0
SEG57/PC1
SEG58/PC2
SEG59/PC3
SEG60/PC4
SEG61/PC5
SEG62/PC6
SEG63/PC7
SEG64/P80
SEG65/P81
SEG66/P82
SEG67/P83
SEG68/P84
SEG69/P85
SEG70/P86
SEG71/P87
SEG72/P90
SEG73/P91
SEG74/P92
SEG75/P93
SEG76/P94
SEG77/P95
SEG78/P96
EM78
808BH
Fig.1.1
Pin assignment (136-Pin die)
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
6
8/1/2004 (V3.1)
SEG37
SEG38
105
104
103
SEG34
SEG35
SEG36
62
63
64
VC2
VC3
VC4
106
61
SEG33
60
P70/INT0
VC1
SEG32
59
P71/INT0
108
107
57
58
P73/INT0
P72/INT0
SEG31
56
109
55
SEG30
54
P76/INT1
P75/INT1
P74/INT1
110
53
SEG29
SEG26
SEG27
SEG28
115
114
52
/RESET
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
P77/INT2
113
SEG24
SEG25
112
111
SEG23
118
117
116
49
50
51
120
119
P66/DAOUT
P67/KTONE
TEST
SEG21
SEG22
121
47
48
SEG19
SEG20
122
46
45
43
44
42
P55/OP-/STGT
P60/SCK
P61/SDO
P62/SDI
P63/CMP1
P64/CMP2
P65/CMP3
SEG16
SEG17
SEG18
124
123
SEG14
SEG15
41
P56/OP+/EST
126
125
SEG13
128
39
40
P57/OPO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
GND,AVSS
SEG12
SEG11
SEG10
SEG9
SEG8
COM23/SEG7
COM22/SEG6
COM21/SEG5
COM20/SEG4
COM19/SEG3
COM18/SEG2
COM17/SEG1
COM16/SEG0
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM0
XIN
XOUT
VDD,AVDD
PLLC
TONE
TIP
RING
CWGS
CWIN
127
EM78808
8-bit Micro-controller
SEG39
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48/PB0
SEG49/PB1
SEG50/PB2
SEG51/PB3
SEG52/PB4
SEG53/PB5
SEG54/PB6
SEG55/PB7
SEG60/PC4
SEG61/PC5
SEG62/PC6
SEG63/PC7
SEG64/P80
SEG65/P81
SEG66/P82
SEG67/P83
SEG68/P84
SEG69/P85
SEG70/P86
SEG71/P87
SEG72/P90
SEG73/P91
SEG74/P92
SEG75/P93
SEG76/P94
SEG77/P95
SEG78/P96
SEG79/P97
VC5
EM78808AAQ , EM78808ABQ
Fig.1.2
Pin assignment (128-Pin QFPA)
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
7
8/1/2004 (V3.1)
103
SEG33
SEG34
SEG35
SEG36
55
56
57
58
59
60
61
62
63
64
P75/INT1
P74/INT1
P73/INT0
P72/INT0
P71/INT0
P70/INT0
VC1
VC2
VC3
VC4
105
104
SEG31
108
107
54
P76/INT1
SEG32
SEG30
109
53
P77/INT2
106
SEG28
SEG29
110
52
/RESET
SEG27
SEG25
SEG26
112
111
SEG24
114
49
50
51
P66/DAOUT
P67/KTONE
TEST
113
SEG23
115
SEG20
SEG21
SEG22
119
117
116
SEG18
SEG19
121
46
47
48
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
P63/CMP1
P64/CMP2
P65/CMP3
118
SEG15
SEG16
SEG17
124
123
122
43
44
45
120
SEG13
SEG14
42
P55/OP-/STGT
P60/SCK
P61/SDO
P62/SDI
SEG12
126
125
41
P56/OP+/EST
SEG11
128
39
40
P57/OPO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
GND,AVSS
SEG10
SEG9
SEG8
COM23/SEG7
COM22/SEG6
COM21/SEG5
COM20/SEG4
COM19/SEG3
COM18/SEG2
COM17/SEG1
COM16/SEG0
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM0
XIN
XOUT
VDD,AVDD
PLLC
TONE
EGIN1
EGIN2
TIP
RING
CWGS
CWIN
127
EM78808
8-bit Micro-controller
SEG37
SEG38
SEG39
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48/PB0
SEG49/PB1
SEG50/PB2
SEG51/PB3
SEG52/PB4
SEG53/PB5
SEG54/PB6
SEG55/PB7
SEG62/PC6
SEG63/PC7
SEG64/P80
SEG65/P81
SEG66/P82
SEG67/P83
SEG68/P84
SEG69/P85
SEG70/P86
SEG71/P87
SEG72/P90
SEG73/P91
SEG74/P92
SEG75/P93
SEG76/P94
SEG77/P95
SEG78/P96
SEG79/P97
VC5
EM78808BAQ , EM78808BBQ
Fig.1.3
Pin assignment (128-Pin QFPB)
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
8
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
V.Functional Block Diagram
DATA RAM
DATA RAM
CONTROL
CONTROL
REGISTER
REGISTER
CP
CPU
U
LCD
LCD DRIVER
LCD DRIVER
TIMING
TIMING
CONTROL
CONTROL
IO
IO
PORT
PORT
TIM ER
TCC
COUNTER 1
COUNTER 2
WDT
I/O
FSK DECODER
CURRENT DA
Call waiting decoder
DTMF receiver
DUAL TONE GENERATOR
Energy Detector
KEY TONE
COMPARATOR
SERIAL I/O
OP
DATAROM
ROM
DATA
PROGRAM
PROGRAM
ROM
ROM
Fig.2 Block diagram1
Xin Xout PLLC
ROM
WDT timer
Oscillator
timing control
prescalar
R1(TCC)
Control sleep
and wake-up
on I/O port
STACK
R2
GENERAL
RAM
Instruction
register
Interruption
control
ALU
R3
R5
Instruction
ACC
decoder
R4
DATA & CONTROL BUS
DATA RAM
DATA ROM
FSK DECODER
FSK DECODER
Call waiting decoder
DTMF receiver
DTM F TONE
receiverGENERATOR
DUAL
DUAL TONE GENERATOR
KEY TONE
KEY TONE
SERIAL I/O
SERIAL I/O
COM PARATOR
COM PARATOR
CURRENT DA
CURRENT DA
Energy
Detector
OP
OP
PORT5
PORT6
IOC5
R5
IOC6
R6
P55~P57
P60~P67
PORT7
IOC7
R7
P70~P77
PORT8
IOC8
R8
P80~P87
PORT9
PORTB
PORTC
IOC9
R9
IOCB
RB
IOCC
RC
P90~P97
PB0~PB7
PC0~PC7
Fig.3 Block diagram2
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
9
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
VI.Pin Descriptions
PIN
POWER
VDD
AVDD
I/O
DESCRIPTION
POWER
GND
AVSS
POWER
Digital power
Analog power
They connect together when package as 128 pin QFP.
Digital ground
Analog ground
They connect together when package as 128 pin QFP.
CLOCK
XIN
XOUT
PLLC
I
O
I
Input pin for 32.768 kHz oscillator
Output pin for 32.768 kHz oscillator
Phase loop lock capacitor, connect a capacitor 0.01u to 0.047u
with GND
LCD
COM0..COM15
SEG0..SEG7
SEG8...SEG47
SEG48..SEG55
SEG56..SEG63
SEG64..SEG71
SEG72..SEG79
VC1..VC5
O
O(COM16..COM23)
O
O (I/O : PORTB)
O (I/O : PORTC)
O (I/O : PORT8)
O (I/O : PORT9)
I
Common driver pins of LCD drivers
Segment driver pins of LCD drivers
SEG0 to SEG7 are shared with COM16 to COM23
SEG48 to SEG79 are shared with IO PORT.
FSK , TONE ,
KTONE
TIP
I
RING
I
Reference voltage input. Each one connect a capacitor (0.1u) with
GND.
TONE
KTONE
CW
CWGS
CWIN
DTMF
receiver
EST
O
O (PORT67)
Should be connected with TIP side of twisted pair lines for FSK.
Should be connected with RING side of twisted pair lines for
FSK.
Dual tone output pin
Key tone output. Shared with PORT67.
O
I
Gain adjustment of single-ended input OP Amp
Single-ended input OP Amp for call waiting decoder
O
STGT
I/O
Early steering output. Presents a logic high immediately when the
digital algorithm detects a recognizable tone-pair (signal
condition). Any momentary loss of signal condition will cause
EST to return to a logic low. This pin shared with PORT56.
Steering input/guard time output (bi-directional). A voltage
greater than Vtst detected at ST causes the device to register the
detected tone-pair and update the output latch.
A voltage less than Vtst frees the device to accept a new tone-pair.
The GT output acts to reset the external steering time-constant; its
state is a function of EST and the voltage on ST . This pin shared
with PORT55.
OP
OP-
I (PORT55)
OP+
I (PORT56)
OPO
O (PORT57)
The negative Vin input pin of the OP. This pin shared with
PORT55.
The positive Vin input pin of the OP. This pin shared with
PORT56.
The output of OP. This pin shared with PORT57.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
10
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
SERIAL IO
SCK
IO (PORT60)
SDO
O (PORT61)
SDI
Comparator
CMP1
CMP2
CMP3
CURRENT DA
DAOUT
I
(PORT62)
I
I
I
(PORT63)
(PORT64)
(PORT65)
O (PORT66)
Current DA output pin. It can be a control signal for sound
generating.
Shared with PORT66.
IO
P55 ~P57
P60 ~P67
I/O
I/O
P70 ~ P77
I/O
P80 ~ P87
I/O
P90 ~ P97
I/O
PB0 ~ PB7
I/O
PC0 ~ PC7
I/O
INT0
PORT70..73
INT1
PORT74..76
INT2
PORT77
TEST
I
/RESET
I
PORT 5 can be INPUT or OUTPUT port each bit.
PORT 6 can be INPUT or OUTPUT port each bit.
Internal pull high.
PORT 7 can be INPUT or OUTPUT port each bit.
Internal Pull high function.
Auto key scan function.
Interrupt function.
PORT 8 can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT 9 can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT B can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT C can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
Interrupt sources which has the same interrupt flag. Any pin from
PORT70 to PORT73 has a falling edge signal, it will generate a
interruption.
Interrupt sources which has the same interrupt flag. Any pin from
PORT74 to PORT76 has a falling edge signal, it will generate a
interruption.
Interrupt source. Once PORT77 has a falling edge or rising edge
signal (controlled by CONT register), it will generate a
interruption.
Test pin into test mode for factory test only. Connect it ground in
application.
Low reset
EDIN1
EGIN2
I
Master: output pin, Slave: input pin. This pin shared with
PORT60.
Output pin for serial data transferring. This pin shared with
PORT61.
Input pin for receiving data. This pin shared with PORT62.
Comparator input pins. Shared with PORT63, PORT64 and
PORT65.
Differential Energy Detector input pin
It can detect external analog signal
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8-bit Micro-controller
VII.Functional Descriptions
VII.1 Operational Registers
ADDRESS
REGISTER
(PAGE0)
00
R0
01
R1(TCC buffer)
02
R2(PC)
REGISTER
(PAGE1)
CONTROL REGISTER
(PAGE0)
R3(5,6)
R3(7)
03
R3(STATUS)
04
R4(RSR, BANK SELECT
R4(SPI status and control
05
R5(PORT57..PORT55
Program ROM PAGE)
R5(SPI data buffer)
06
R6(PORT6)
R6 (DATA ROM data buffer)
07
R7(PORT7)
08
R8(PORT8)
09
R9(PORT9)
R7(DATA ROM address
address7 .. address 0)
R8(DATA ROM address
address 15 .. address 8)
R9(EDD,LCDA8,DATA ROM
address 17 .. address 16
RA(LCD RAM address)
0A
RA(CPU MODE,CLOCK,
FSK,WDT control)
0B
RB(PORTB)
RB (LCD RAM data buffer)
0C
RC(PORTC)
0D
RD(Comparator control)
0E
RE(Key scan , LCD control)
RC(DATA RAM data buffer)
RD(DATA RAM address
address 7 .. address 0)
RE( Energy Detector control
,DATA RAM address
address 12 .. address 8)
0F
RF(Interrupt flag)
IOC5(IOC55,56,57,P8S,
P9S,PBS,PCS)
IOC6(PORT6 IO control)
IOC5(Key tone, LCD bias control)
IOC7 (PORT7 IO control)
IOC7(key strobe , seg7 .. seg0)
IOC8 (PORT8 IO control)
IOC8(key strobe, seg15.. seg8)
IOC9 (PORT9 IO control
IOC9(DTMF receiver control)
IOCA(PORT7 pull high)
IOCB(PORTB IO control)
IOCB(PORT6 pull high)
IOCC(PORTC IO control)
IOCC(Tone1)
IOCD(COUNTER1 PRESET)
IOCD(Tone2)
IOCE(COUNTER2 PRESET)
IOCE(OP control)
IOCF(Interrupt control)
16 byte COMMON
REGISTER
R4(7,6)
CONTROL REGISTER
(PAGE2)
R3(5,6)
DATA RAM
LCD RAM
20
:
3F
IOC6 (current DA)
IOCA(COUNTER1,2,
prescaler and source)
10
:
1F
CONTROL REGISTER
(PAGE1)
BANK0 , BANK1, BANK2 ,BANK3
32X8
32X8
32X8
32X8
RD PAGE1 => address7..0
RA PAGE1 => address
RB PAGE1 =>data
COMMOM REGISTER
RE PAGE1 => address12..8
RC PAGE1 =>data
IOC5 ( Stack Pointer )
IOC6 (Port s/w, LCDDV, CDAL)
IOCE (Energy Detector)
Fig.4 control register configuration
VII.2 Operational Register Detail Description
R0 (Indirect Addressing Register)
R0 is not a physically implemented register. It is useful as indirect addressing pointer. Any instruction using R0
as register actually accesses data pointed by the RAM Select Register (R4).
Example:
Mov
a,@0x20 ;store a address at R4 for indirect addressing
Mov
0x04,A
Mov
a,@0xAA ;write data 0xAA to R20 at bank0 through R0
Mov
0x00,A
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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EM78808
8-bit Micro-controller
R1 (TCC)
TCC data buffer. Increased by 16.38KHz or by the instruction cycle clock (controlled by CONT register).
Written and read by the program as any other register.
R2 (Program Counter)
The structure is depicted in Fig. 5.
Generates 32K × 13 on-chip PROGRAM ROM addresses to the relative programming instruction codes.
"JMP" instruction allows the direct loading of the low 10 program counter bits.
"CALL" instruction loads the low 10 bits of the PC, PC+1, and then push into the stack.
"RET'' ("RETL k", "RETI") instruction loads the program counter with the contents at the top of stack.
"MOV R2,A" allows the loading of an address from the A register to the PC, and the ninth and tenth bits are
cleared to "0''.
"ADD R2,A" allows a relative address be added to the current PC, and contents of the ninth and tenth bits are
cleared to "0''.
"TBL" allows a relative address be added to the current PC, and contents of the ninth and tenth bits don't change.
The most significant bit (A10~A14) will be loaded with the content of bit PS0~PS3 in the status register (R5)
upon the execution of a "JMP'', "CALL'', "ADD R2,A'', or "MOV R2,A'' instruction.
If a interrupt trigger, PROGRAM ROM will jump to address8 at page0. The CPU will store ACC,R3 status and
R5 PAGE automatically, it will restore after instruction RETI.
R5(PAGE)
PC
CALL and
INTERRUPT
A14 A13 A12 A11 A10
A9 A8
A7~A0
00000 PAGE0 0000~03FF
00001 PAGE1 0400~07FF
RET
RETL
RETI
00010 PAGE2 0800~0BFF
11110
PAGE30 7800~7BFF
11111
PAGE31 7C00~7FFF
STACK1
STACK2
STACK3
STACK4
STACK5
STACK6
STACK7
STACK8
STACK9
:
:
STACK30
STACK31
STACK32
store
ACC,R3,R5(PAGE)
restore
Fig.5 Program counter organization
R3 (Status Register)
7
6
5
4
3
2
1
0
PAGE
IOCP1S IOCPAGE
T
P
Z
DC
C
Bit 0 (C) : Carry flag
Bit 1 (DC) : Auxiliary carry flag
Bit 2 (Z) : Zero flag
Bit 3 (P) : Power down bit.
Set to 1 during power on or by a "WDTC" command and reset to 0 by a "SLEP" command.
Bit 4 (T) : Time-out bit.
Set to 1 by the "SLEP" and "WDTC" command, or during power up and reset to 0 by WDT timeout.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
EVENT
T
WDT wake up from sleep mode
0
P
0
WDT time out (not sleep mode)
0
1
/RESET wake up from sleep
1
0
Power up
1
1
Low pulse on /RESET
x
X
REMARK
x : don't care
Bit 5(IOCPAGE) : change IOC5 ~ IOCE to another page
Please refer to Fig.4 control register configuration for details.
0/1
page0 / page1
Bit 6(IOCP1S) : change IOC PAGE1 and PAGE2 to another option register
Please refer to Fig.4 control register configuration for details.
0/1
page1 /page2
Bit 6(IOCP1S)
Bit 5 (IOCPAGE)
X
0
0
1
1
1
Bit 7(PAGE) : change R4 ~ RE to another page
Please refer to Fig.4 control register configuration for details.
0/1
page0 / page1
PAGE SELECT
PAGE 0
PAGE 1
PAGE 2
R4 (RAM selection for common registers R20 ~ R3F, SPI)
PAGE0 (RAM selection register)
7
6
5
4
3
2
1
0
RB1
RB0
RSR5
RSR4
RSR3
RSR2
RSR1
RSR0
Bit 0 ~ Bit 5 (RSR0 ~ RSR5) : Indirect addressing for common registers R20 ~ R3F
RSR bits are used to select up to 32 registers (R20 to R3F) in the indirect addressing mode.
Bit 6 ~ Bit 7 (RB0 ~ RB1) : Bank selection bits for common registers R20 ~ R3F
These selection bits are used to determine which bank is activated among the 4 banks for 32 register (R20 to
R3F)..
Please refer to Fig.4 control register configuration for details.
PAGE1 (SPI control register)
7
RBF
6
SPIE
5
SRO
4
SE
3
SCES
2
SBR2
1
SBR1
0
SBR0
Fig. 6 shows how SPI to communicate with other device by SPI module. If SPI is a master controller, it
sends clock through the SCK pin. An 8-bit data is transmitted and received at the same time. If SPI, however, is
defined as a slave, its SCK pin could be programmed as an input pin. Data will continue to be shifted on a basis
of both the clock rate and the selected edge.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
SDI
SDO
Master Device
Salve Device
R5 page1
SPIR register
SPIW register
SPIS Reg
SDI
SDO
SCK
SCK
SPI module
Bit 0
Bit7
Fig.6 Single SPI Master / Salve Communication
Bit 0 ~ Bit 2 (SBR0 ~ SBR2) : SPI baud rate selection bits
SBR2
0
0
0
0
1
1
1
1
SBR1
0
0
1
1
0
0
1
1
SBR0
0
1
0
1
0
1
0
1
Mode
Master
Master
Master
Master
Master
Master
Slave
Baud rate
Fsco
Fsco/2
Fsco/4
Fsco/8
Fsco/16
Fsco/32
X
<Note> Fsco = CPU instruction clock
For example :
If PLL enable and RA PAGE0 (Bit5,Bit4)=(1,1), instruction clock is 3.58MHz/2
Fsco=3.5862MHz/2
If PLL enable and RA PAGE0 (Bit5,Bit4)=(0,0), instruction clock is 0.895MHz/2
Fsco=0.895MHz/2
If PLL disable, instruction clock is 32.768kHz/2
Fsco=32.768kHz/2.
Bit 3 (SCES) : SPI clock edge selection bit
1 Data shifts out on falling edge, and shifts in on rising edge. Data is hold during the high level.
0 Data shifts out on rising edge, and shifts in on falling edge. Data is hold during the low level.
Bit 4 (SE) : SPI shift enable bit
1
Start to shift, and keep on 1 while the current byte is still being transmitted.
0
Reset as soon as the shifting is complete, and the next byte is ready to shift.
<Note> This bit has to be reset in software.
Bit 5 (SRO) : SPI read overflow bit
1
A new data is received while the previous data is still being hold in the SPIB register. In this situation, the
data in SPIS register will be destroyed. To avoid setting this bit, users had better to read SPIB register even if the
transmission is implemented only.
0
No overflow
<Note> This can only occur in slave mode.
Bit 6 (SPIE) : SPI enable bit
1
Enable SPI mode
0
Disable SPI mode
Bit 7 (RBF) : SPI read buffer full flag
1
Receive is finished, SPIB is full.
0
Receive is not finish yet, SPIB is empty.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
15
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
Write
R5
Read
R5
RBF
RBFI
SPIWC
SPIR reg.
SPIW reg.
set to 1
SPIE
Buffer Full Detector
SDI
SDI/P62
MUX
SPIS reg.
shift right
PORT62
bit 7
bit 0
SDO
SDO/P61
MUX
SPIC reg. (R4 page1)
PORT61
Edge
Select
SPIE
0
3
SBR0 ~SBR2
Noise
Filter
SBR2~SBR0
3
2
Clock Select
T sco
Prescaler
4, 8, 16, 32, 64, 128
Edge
Select
SCK
PORT60
16.38kHz
M UX
SCK/P60
SCK
SPIE
Fig.7 SPI structure
SPIC reg. : SPI control register
SDO/P61 : Serial data out
SDI/P62 : Serial data in
SCK/P60 : Serial clock
RBF : Set by buffer full detector, and reset in software.
RBFI : Interrupt flag. Set by buffer full detector, and reset in software.
Buffer Full Detector : Sets to 1, while an 8-bit shifting is complete.
SE : Loads the data in SPIW register, and begin to shift
SPIE : SPI control register
SPIS reg. : Shifting byte out and in. The MSB will be shifted first. Both the SPIS register and the SPIW register
are loaded at the same time. Once data being written to, SPIS starts transmission / reception. The
received data will be moved to the SPIR register, as the shifting of the 8-bit data is complete. The
RBF (Read Buffer Full ) flag and the RBFI(Read Buffer Full Interrupt) flag are set.
SPIR reg. : Read buffer. The buffer will be updated as the 8-bit shifting is complete. The data must be read
before the next reception is finished. The RBF flag is cleared as the SPIR register read.
SPIW reg. : Write buffer. The buffer will deny any write until the 8-bit shifting is complete. The SE bit will be
kept in 1 if the communication is still under going. This flag must be cleared as the shifting is
finished. Users can determine if the next write attempt is available.
SBR2 ~ SBR0: Programming the clock frequency/rates and sources.
Clock select : Selecting either the internal instruction clock or the external 16.338KHz clock as the shifting
clock.
Edge Select : Selecting the appropriate clock edges by programming the SCES bit
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
16
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
SCK
(SCES=0)
SCK
(SCES=1)
Bit7
Bit6
Bit5
Bit4
Bit2
Bit3
Bit1
Bit0
SDO
SDI
RBF
Shift data in
Shift data out
Clear by software
Fig.8 SPI timing
R5 (PORT5 I/O data, Program page selection, SPI data)
PAGE0 (PORT5 I/O data register, Program page register)
7
6
5
4
3
R57
R56
R55
PS4
PS3
Bit 0 ~ Bit 4 (PS0 ~ PS4) : Program page selection bits
2
PS2
1
PS1
0
PS0
PS4 PS3 PS2 PS1 PS0 Program memory page (Address)
0
0
0
0
0 Page 0
0
0
0
0
1 Page 1
0
0
0
1
0 Page 2
0
0
0
1
1 Page 3
:
:
:
:
: :
:
:
:
:
: :
1
1
1
1
0 Page 30
1
1
1
1
1 Page 31
User can use PAGE instruction to change page to maintain program page by user. Otherwise, user can use
far jump (FJMP) or far call (FCALL) instructions to program user's code. And the program page is
maintained by EMC's complier. It will change user's program by inserting instructions within program.
Bit 5 ~ Bit 7 (P55 ~ P57) : 3-bit PORT5(5~7) I/O data register
User can use IOC register to define input or output each bit.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
PAGE1 (SPI data buffer)
7
6
5
4
3
2
1
0
SPIB7
SPIB6
SPIB5
SPIB4
SPIB3
SPIB2
SPIB1
SPIB0
Bit 0 ~ Bit 7 (SPIB0 ~ SPIB7) : SPI data buffer
If you write data to this register, the data will write to SPIW register. If you read this data, it will read the
data from SPIR register. Please refer to figure7
R6 (PORT6 I/O data, Data ROM data)
PAGE0 (PORT6 I/O data register)
7
6
5
4
3
P67
P66
P65
P64
P63
Bit 0 ~ Bit 7 (P60 ~ P67) : 8-bit PORT6(0~7) I/O data register
User can use IOC register to define input or output each bit..
2
P62
1
P61
0
P60
PAGE1 (Data ROM data buffer)
7
6
5
4
3
2
1
0
DROM_D7 DROM_D6 DROM_D5 DROM_D4 DROM_D3 DROM_D2 DROM_D1 DROM_D0
Bit 0 ~ Bit 7 (DRD0 ~ DRD7) : Data ROM data buffer for ROM reading.
Example.
MOV
A,@1
MOV
R7_PAGE1,A
MOV
A,@0
MOV
R8_PAGE1,A
MOV
A,@0
MOV
R9_PAGE1,A
MOV
A,R6_PAGE1
;read the data at Data ROM which address is "00001".
R7 (PORT7 I/O data, Data ROM address(0~7))
PAGE0 (PORT7 I/O data register)
7
6
5
4
3
P77
P76
P75
P74
P73
Bit 0 ~ Bit 7 (P70 ~ P77) : 8-bit PORT7(0~7) I/O data register
User can use IOC register to define input or output each bit.
2
P72
1
P71
0
P70
PAGE1 (Data ROM address register)
7
6
5
4
3
2
1
0
DROM_A7 DROM_A6 DROM_A5 DROM_A4 DROM_A3 DROM_A2 DROM_A1 DROM_A0
Bit 0 ~ Bit 7 (DRA0 ~ DRA7) : Data ROM address ( 0~7 ) for ROM reading
R8 (PORT8 I/O data, Data ROM address(8~15))
PAGE0 (PORT8 I/O data register)
7
6
5
4
3
P87
P86
P85
P84
P83
Bit 0 ~ Bit 7 (P80 ~ P87) : 8-bit PORT8 ( 0~7 ) I/O data register
User can use IOC register to define input or output each bit.
2
P82
1
P81
0
P80
PAGE1 (Data ROM address register)
7
6
5
4
3
2
1
0
DROM_A15 DROM_A14 DROM_A13 DROM_A12 DROM_A11 DROM_A10 DROM_A9 DROM_A8
Bit 0 ~ Bit 7 (DRA8 ~ DRA15) : Data ROM address ( 8~15 ) for ROM reading
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
R9 (PORT9 I/O data, extra LCD address bit, Data ROM address(16~17) )
PAGE0 (PORT9 I/O data register)
7
6
5
4
3
P97
P96
P95
P94
P93
Bit 0 ~ Bit 7 (P90 ~ P97) : 8-bit PORT9 ( 0~7 ) I/O data register
User can use IOC register to define input or output each bit.
2
P92
1
P91
0
P90
PAGE1 (LCD address MSB bit, Data ROM address bits)
7
6
5
4
3
2
1
0
LCDA8
DROM_A17 DROM_A16
Bit 0 ~ Bit 1 (DROM_A16 ~ DROM_A17) : Data ROM address(16~17) for ROM reading.
Bit 2 ~ Bit 6 : unused
Bit 7 (LCDA8) : MSB of LCD address for LCD RAM reading or writing
Other LCD address bits LCDA7 ~ LCDA0 are set from RA PAGE1 Bit 7 ~ Bit 0.
For LCD address access over 0xFFH, set this bit to “1”; otherwise set this bit to “0”.
RA (CPU power saving, PLL, Main clock selection, FSK, Watchdog timer, LCD
address)
PAGE0 (CPU power saving bit, PLL, Main clock selection bits, FSK , Watchdog timer
enable bit)
7
6
5
4
3
2
1
0
0
PLLEN
CLK1
CLK0
FSKPWR FSKDATA
/CD
WDTEN
Bit 0 (WDTEN) : Watch dog control register
User can use WDTC instruction to clear watch dog counter. The counter 's clock source is 32768/2 Hz. If
the prescaler assigns to TCC. Watch dog will time out by (1/32768 )*2 * 256 = 15.616ms. If the prescaler
assigns to WDT, the time of time out will be more times depending on the ratio of prescaler.
0/1
disable/enable
Bit 1 (/CD) : FSK carrier detect indication
0/1
Carrier Valid/Carrier Invalid
It's a read only signal. If FSK decoder detect the energy of mark or space signal. The Carrier signal will go
to low level. Otherwise it will go to high.. Note!! Should be at normal mode.
Bit 2 (FSKDATA) : FSK decoding data output
It's a read only signal. If FSK decode the mark or space signal , it will output high level signal or low level
signal at this register. It's a raw data type. That means the decoder just decode the signal and has no process
on FSK signal. Note!! Should be at normal mode.
User can use FSK data falling edge interrupt function to help data decoding.
Ex:
MOV
A,@01000000
IOW
IOCF
;enable FSK interrupt function
CLR
RF
ENI
;wait for FSK data's falling edge
:
0 = Space data ( 2200Hz )
1 = Mark data (1200Hz)
Bit 3 (FSKPWR) : FSK power control
0/1
FSK decoder powered down / FSK decoder powered up
It's the control register of FSK block power.
The relation between bit 1 to bit 3 is shown in Fig.9. You have to power FSK decoder up first, then wait a
setup time (Tsup) and check carrier signal (/CD). If the carrier is low, program can process the FSK data.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
FIRST RING
2 SECONDS
0.5 SEC
0.5 SEC
SECOND RING
2 SECONDS
FSK signal
TIP/RING
Tcdh
Tcdl
/CD
Tdoc
FSKDATA
DATA
Tsup
/FSKPWR
Fig.9 The relation between bit 1 ~ bit 3
The controller is a CMOS device designed to support the Caller Number Deliver feature which is offered
by the Regional Bell Operating Companies. The FSK block comprises one path: the signal path. The signal path
consist of an input differential buffer, a band pass filter, an FSK demodulator and a data valid with carrier detect
circuit.
In a typical application, user can use his own external ring detect output as a triggering input to IO port. User
can use this signal to wake up whole chip by external ring detect signal.
By setting “1” to bit 3 (FSKPWR) of register RA to activate the block of FSK decoder. If bit 3 (FSKPWR) of
register RA is set to “0”, the block of FSK decoder will be powered down.
The input buffer accepts a differential AC coupled input signal through the TIP and RING input and feeds this
signal to a band pass filter. Once the signal is filtered, the FSK demodulator decodes the information and sends
it to a post filter. The output data is then made available at bit 2 (FSKDATA) of register RA. This data, as sent
by the central office, includes the header information (alternate "1" and "0") and 150 ms of marking which
precedes the date, time and calling number. If no data is present, the bit 2 (DATA) of register RA is held on “1”
state. This is accomplished by an carrier detect circuit which determines if the in-band energy is high enough. If
the incoming signal is valid, bit 1 (/CD) of register RA will be “0” otherwise it will be held on “1”. And thus the
demodulated data is transferred to bit 2 (DATA) of register RA. If it is not, then the FSK demodulator is
blocked.
Bit 4 ~ Bit 5 (CLK0 ~ CLK1) : Main clock selection bits
User can choose different frequency of main clock by CLK1 and CLK2. All the clock selection is list
below.
PLLEN
CLK1
CLK0
Sub clock
MAIN clock
CPU clock
1
0
0
32.768kHz
895.658kHz
895.658kHz (Normal mode)
1
0
1
32.768kHz
1.7913MHz
1.7913MHz (Normal mode)
1
1
0
32.768kHz
10.7479MHz 10.7479MHz (Normal mode)
1
1
1
32.768kHz
3.5826MHz
3.5826MHz (Normal mode)
0
Don’t care
don’t care
32.768kHz
Don’t care
32.768kHz (Green mode)
0
Don’t care
don’t care
32.768kHz
Don’t care
32.768kHz (Green mode)
0
Don’t care
don’t care
32.768kHz
Don’t care
32.768kHz (Green mode)
0
Don’t care
don’t care
32.768kHz
Don’t care
32.768kHz (Green mode)
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
Bit 6 (PLLEN) : PLL enable control bit
It is CPU mode control register. If PLL is enabled, CPU will operate at normal mode (high frequency,
main clock); otherwise, it will run at green mode (low frequency, 32768 Hz).
0/1
disable/enable
3.5826M Hz to analog circuit
PLL
÷
÷
×
×
4 =>895.658kHz
2 =>1.7913M Hz
1 =>3.5826M Hz
3 =>10.7479M Hz
1
switch
Sub-clock
32.768kHz
ENPLL
System clock
0
CLK1 ~ CLK0
Fig.10 The relation between 32.768kHz and PLL
Bit 7: Unused register. Always keep this bit to 0 or some un-expect error will happen!
The status after wake-up and the wake-up sources list as the table below.
Wakeup signal
SLEEP mode
GREEN mode
NORMAL mode
RA(7,6)=(0,0) RA(7,6)=(x,0)
RA(7,6)=(x,1)
+ SLEP
no SLEP
no SLEP
TCC time out
No function
Interrupt
Interrupt
IOCF bit 0=1
(jump to address 8 (jump to address
And "ENI"
at page0)
8 at page0)
COUNTER1 time out
IOCF bit 1=1
And "ENI"
COUNTER2 time out
IOCF bit 2=1
And "ENI"
WDT time out
No function
Interrupt
(jump to address 8
at page0)
No function
Interrupt
(jump to address 8
at page0)
RESET and
RESET and Jump
Jump to address to address 0
0
RESET and
Interrupt
Jump to address (jump to address 8
0
at page0)
Interrupt
(jump to address
8 at page0)
Interrupt
(jump to address
8 at page0)
RESET and
Jump to address
0
Interrupt
(jump to address
8 at page0)
PORT7
IOCF bit3 or bit4 or
bit5 = 1
And "ENI"
DED interrupt
No function
Interrupt
Interrupt
(jump to address 8 (jump to address
IOCE page2 bit 6 = 1
And RE page1 bit6
at page0)
8 at page0)
logic level variation
(switch by EDGE bit)
And “ENI”
Stack overflow
No function
Interrupt
Interrupt
IOC5 page2 bit7=1
(jump to address 8 (jump to address
&bit 6: 0 1
at page0)
8 at page0)
And “ENI”
<Note> Stack overflow interrupt function is exist in ROM less and OTP chip only.
<Note> PORT70 ~ PORT73 's wakeup function is controlled by IOCF bit3 and ENI instruction. They are
falling edge trigger.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
21
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
PORT74 ~ PORT76 's wakeup function is controlled by IOCF bit4 and ENI instruction. They are falling edge
trigger.
PORT77 's wakeup function is controlled by IOCF bit5 and ENI instruction. It's falling edge or rising edge
trigger (controlled by CONT register).
PAGE1 (LCD address)
7
6
5
4
3
2
1
0
LCDA7
LCDA6
LCDA5
LCDA 4
LCDA 3
LCDA 2
LCDA 1
LCDA 0
Bit 0 ~ Bit 7 (LCDA0 ~ LCDA7) : LCD address for LCD RAM reading or writing
The data in the LCD RAM correspond to the COMMON and SEGMENT signals as the table .
COM23 ~ COM16
(set R9 PAGE1 bit7=1)
Address 100H
Address 101H
Address 102H
:
:
:
Address 14EH
Address 14FH
Address 150H
:
Address 17FH
COM15 ~COM8
(set R9 PAGE1 bit7=0)
Address 80H
Address 81H
Address 82H
:
:
:
Address CEH
Address CFH
Address D0H
:
Address FFH
COM7 ~ COM0
(set R9 PAGE1 bit7=0)
Address 00H
Address 01H
Address 02H
:
:
:
Address 4EH
Address 4FH
Address 50H
:
Address 7FH
SEG0
SEG1
SEG1
:
:
:
SEG78
SEG79
Empty
:
Empty
RB (PORTB I/O data, LCD data)
PAGE0 (PORTB I/O data register)
7
6
5
4
3
PB7
PB6
PB5
PB4
PB3
Bit 0 ~ Bit 7 (PB0 ~ PB7) : 8-bit PORTB(0~7) I/O data register
User can use IOC register to define input or output each bit.
2
PB2
1
PB1
0
PB0
PAGE1 (LCD data buffer)
7
6
5
4
3
2
1
LCDD7
LCDD6
LCDD5
LCDD4
LCDD3
LCDD2
LCDD1
Bit 0 ~ Bit 7 (LCDD0 ~ LCDD7) : LCD data buffer for LCD RAM reading or writing
Example.
MOV
MOV
MOV
MOV
MOV
MOV
:
A,@0
R9_PAGE1,A
RA_PAGE1,A
A,@0XAA
RB_PAGE1,A
A,RB_PAGE1
0
LCDD0
;ADDRESS
;WRITE DATA 0XAA TO LCD RAM
;READ DATA FROM LCD RAM
RC (PORTC I/O data, Data RAM data)
PAGE0 (PORTC I/O data register)
7
6
5
4
3
PC7
PC6
PC5
PC4
PC3
Bit 0 ~ Bit 7 (PC0 ~ PC7) : 8-bit PORTC(0~7) I/O data register
User can use IOC register to define input or output each bit.
2
PC2
1
PC1
0
PC0
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
22
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
PAGE1 (Data RAM data buffer)
7
6
5
4
3
2
1
0
RAMD7
RAMD6
RAMD5
RAMD4
RAMD3
RAMD2
RAMD1
RAMD0
Bit 0 ~ Bit 7 (RAMD0 ~ RAMD7) : Data RAM data buffer for RAM reading or writing.
Ex.
MOV
A , @1
MOV
RD_PAGE1 , A
MOV
A , @0
MOV
RE_PAGE1 , A
MOV
A , @0x55
MOV
RC_PAGE1 , A
;write data 0x55 to DATA RAM which address is "0001".
MOV
A , RC_PAGE1
;read data
:
RD (Comparator control, Data RAM address(0 ~ 7))
PAGE0 (Comparator control bits)
7
6
5
4
3
2
1
0
CMPEN CMPFLAG CMPS1
CMPS0
CMP_B3
CMP_B2
CMP_B1
CMP_B0
If user define PORT63 , PORT64 or PORT65 (by CMPIN1, CMPIN2, CMPIN3 at IOCE page1) as a
comparator input or PORT6. User can use this register to control comparator's function.
Bit 0~Bit 3(CMP_B0~CMP_B3) : Reference voltage selection of internal bias circuit for comparator.
Reference voltage for comparator = VDD x ( n + 0.5 )/ 16 , n = 0 to 15
Bit 4~Bit 5(CMPS0~CMPS1) : Channel selection from CMP1 to CMP3 for comparator
CMPS1
CMPS0
Input
0
0
CMP1
0
1
CMP2
1
0
CMP3
1
1
Reserved
Bit 6(CMPFALG) : Comparator output flag
0
Input voltage < reference voltage
1
Input voltage > reference voltage
Bit 7(CMPEN) : Enable control bit of comparator.
0/1
disable/enable, When this bit is set to “0”, 2.0V ref circuit is also powered off.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
23
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
CMP1
P63/CM P1
MUX
PORT63
CM PIN1
CMP2
P64/CM P2
MUX
+
MUX
CMPFLAG
PORT64
2
CM PIN2
CMPS1
CMPS0
CMP3
P65/CM P3
MUX
PORT65
1
0
CM PIN3
M UX
VDD
V2_0
ref.
2.0V
MUX
VR
CMPREF
CM PEN
CMPEN
VRSEL
1/2R
1111
R
1110
R
M UX
0000
1/2R
4
CMP_B3 to CMP_B0
Fig.11 Comparator circuit
CMPEN
CMP1 to CMP3
reference
voltage
Setup time 10us
CPU clock
CMPFLAG
Compare start
Compare end
Fig.12 Comparator timing
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
24
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
PAGE1 (Data RAM address0 ~ address7)
7
6
5
4
3
2
1
0
RAMA7
RAMA6
RAMA5
RAMA4
RAMA3
RAMA2
RAMA1
RAMA0
Bit 0~Bit 7(RAMA0~RAMA7) : Data RAM address (address0 to address7) for RAM reading or writing
RE (CAS, Key scan, LCD control, Data RAM address(8 ~ 10))
PAGE0 (Key scan control, LCD control)
7
6
5
4
3
2
1
0
CAS
KEYCHK KEYSTRB KEYSCAN
LCD1
LCD0
LCDM1
LCDM0
Bit 0~Bit 1(LCDM0~LCDM1) : LCD common mode, bias select and COM/SEG switch control bits
LCDM1, LCDM0
COM output mode LCD bias
COM/SEG switch
0,0
16 common
1/4 bias
SEG0 ~ SEG7 select
0,1
9 common
1/4 bias
SEG0 ~ SEG7 select
1,0
8 common
1/4 bias
SEG0 ~ SEG7 select
1,1
24 common
1/5 bias
COM16 ~ COM23 select
<Note> When 8, 9 and 16 LCD common mode is set, COM16/SEG0 pin ~ COM23/SEG7 pin are also set to
SEG0 ~ SEG7 and LCD bias is 1/4 bias. When 24 LCD common mode is set, COM16/SEG0 pin ~
COM23/SEG7 pin are also set to COM16 ~ COM23 and LCD bias is 1/5 bias.
Bit 2~Bit 3 (LCD0~LCD1) : LCD operation function definition.
LCD1, LCD0
LCD operation
0,0
Disable
0,1
Blanking
1,0
Reserved
1,1
LCD enable
<Note> Key strobe and Key check functions should be normal operating whenever LCD is enabled or disabled.
The controller can drive LCD directly. LCD block is made up of LCD driver, display RAM, segment
output pins, common output pins and LCD operating bias pins.
Duty, the number of segment , the number of common and frame frequency are determined by LCD mode
register RE PAGE0 Bit 0~ Bit 1.
When 8, 9 or 16 LCD commons are used, LCD operating bias pins VC1, VC2, VC4 and VC5 need to be
connected 0.1uF capacitors to the ground (VC3 is not necessary). When 24 LCD common is used, all LCD
operating bias pins VC1 ~ VC5 need to be connected 0.1uF capacitors to the ground.
LCD driver can be controlled as different driving ability (refer to IOC6 PAGE1 Option-B register).
The basic structure contains a timing control which uses the basic frequency 32.768kHz to generate the proper
timing for different duty and display access. RE PAGE1 register is a command register for LCD driver and
display. The LCD display (disable, enable, blanking) is controlled by RE PAGE0 Bit 2 ~ Bit 3 and the driving
duty is decided by RE PAGE Bit 0 ~ Bit 2. LCD display data is stored in data RAM which address and data
access controlled by registers R9, RA PAGE1 and RB PAGE1.
User can regulate the contrast of LCD display by IOC5 PAGE1 (BIAS3..BIAS0). Up to 16 levels contrast is
convenient for better display. And the internal voltage follower can afford large driving source.
COM signal : The number of COM pins varies according to the duty cycle used, as following:
In 1/8 duty mode COM8 ~ COM15 must be open.
In 1/9 duty mode COM9~ COM15 must be open
In 1/16 duty mode COM0 ~ COM15 pins must be used.
In 1/24 duty mode COM0 ~ COM23 pins must be used.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
25
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
duty
COM0 ~ COM7
1/8
o
1/9
o
1/16
o
1/24
o
x : open, o : select
COM8 COM9
X
x
O
x
O
o
O
o
..
..
..
..
..
COM15 COM15 ~ COM23
x
x
x
x
o
x
o
o
SEG signal : The segment signal pins are connected to the corresponding display RAM. The high byte to the
low byte Bit 0 ~ Bit 7 are correlated to COM0 ~ COM23 respectively . When a bit of display RAM
is 1, a select signal is sent to the corresponding segment pin, and when the bit is 0 , a non-select
signal is sent to the corresponding segment pin.
Bit 4(KEYSCAN) : Key scan function enable control bit
0/1
disable/enable
If you enable key scan function LCD waveform will has a small pulse within a period like Fig.13.
V1
V2
V4
V5
GND
COM2
V1
V2
V4
V5
GND
SEG
V1
V2
V4
V5
30us
GND
Fig.13. key scan waveform for 1/8, 1/9, 1/16 duty
Bit 5(KEYSTRB) : Key strobe enable control bit
0/1
disable/enable
key strobe signal , if you set this bit , segment will switch to strobe signal temporally and output zero
signal ( one instruction long ) one by one from segment 8 to segment 23. During one segment strobe time,
CPU will check port7(0:3) equal to "1111" or not. If not, CPU will latch a zero at IOC7 PAGE1 and IOC8
PAGE1 one by one depends on which segment strobe.
After strobe, this bit will be cleared . Fig.14 is key strobe signal.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
26
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
One instruction
REGISTER
IOC7(0) IOC7(1) IOC7(2) IOC7(3)
STROBE
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
IOC7(4) IOC7(5) IOC7(6)
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
IOC7(7) IOC8(0) IOC8(1) IOC8(2) IOC8(3) IOC8(4) IOC8(5) IOC8(6) IOC8(7)
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
Fig.14 key strobe signal
Bit 6(KEYCHK) : Key check enable control bit
0
disable key check function.
1
enable key check function. SEG8 to SEG23 will keep low level.
Figure 15 is relationship between KEYSCAN, KEYSTROBE , KETCHECK and segments.
And figure 16 is key scan flow by interrupt trigger.
RELATION BETWEEN S(8:23) , KEYSCAN, KEY STROBE, KEY CHECK
KEY SCAN PULSE
KEY SCAN
CONTROL
SEGMENT(8:23)
0
0
MUX
KEY STROBE SIGNAL
GND
1
MUX
1
KEYSTROBE
KEYCHECK
Fig.15 KEYSCAN, KEYSTROBE , KEYCHECK and segments.
Bit 7(CAS) : CALL WAITING decoding output
0/1
CW data valid / No data
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
27
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
Set port7(3:0) input
(IOC7 (7:0) =
“ 0x0f ” )
set IOC page1
(BS R3,IOC_PAGE)
port7 pull high
(IOCA=0x0f)
set IOC page0
(BC R3,IOC_PAGE)
enable key scan signal (RE bit4=1)
set INT0 interrupt
ENI
N
Interrupt occur?
Y
Enable main clock (Normal mode)
program delay
enable RE(6) key check
Read port7 ( column key )
disable RE(6) key check
set strobe function
enable RE (5) keystrobe
program delay
read IOC7,IOC8 (row key)
Execution
key function
Get the key location
Fig.16 key scan flow by interrupt trigger
PAGE1 (Data RAM address8 ~ address12)
7
6
5
4
3
2
1
0
DEDD
DED
RAMA12 RAMA11 RAMA10
RAMA9
RAMA8
Bit 0~Bit 4(RAMA8~RAMA12) : Data RAM address (address8 to address12) for RAM reading.
Bit 5 : unused
Bit 6 (DED) : Interrupt flag of Differential Energy Detector (DED) output data
Bit 7 (DEDD) : Output data of Differential Energy Detector (DED) If input signal from EGIN1 and EGIN2 pin
to Differential Energy Detector is over the threshold level setting at IOCE PAGE 2 bit 0 (DEDTHD), the
DED will extract the zero-crossing pulse waveform corresponding to input signal.
RF (Interrupt flags)
7
6
5
4
RBF/SDT FSK/CW
INT2
INT1
"1" means interrupt request, "0" means non-interrupt
Bit 0(TCIF) : TCC timer overflow interrupt flag
Set when TCC timer overflows .
Bit 1(CNT1) : Counter1 timer overflow interrupt flag
Set when counter1 timer overflows.
Bit 2(CNT2) : Counter2 timer overflow interrupt flag
Set when counter2 timer overflows .
3
INT0
2
CNT2
1
CNT1
0
TCIF
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
28
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
Bit 3(INT0) : External INT0 pin interrupt flag
If PORT70 ,PORT71,PORT72 or PORT73 has a falling edge trigger signal. CPU will set this bit.
Bit 4(INT1) : External INT1 pin interrupt flag
If PORT74 ,PORT75 or PORT76 has a falling edge trigger signal. CPU will set this bit.
Bit 5(INT2) : External INT2 pin interrupt flag
If PORT77 has a falling edge or rising edge (controlled by CONT register) trigger signal. CPU will set this
bit.
Bit 6(FSK/CW) : FSK data or Call waiting data interrupt flag.
If FSKDATA or CAS has a falling edge trigger signal, CPU will set this bit.
Bit 7( RBF/STD) : SPI data transfer complete or DTMF receiver signal valid interrupt
If serial IO 's RBF signal has a rising edge signal (RBF set to "1" when transfer data completely), CPU will
set this bit. Or DTMF receiver's STD signal has a rising edge signal (DTMF decode a DTMF signal).
IOCF is the interrupt mask register. User can read and clear.
Trigger edge as the table
Signal
Trigger
<Note>
TCC
Time out
COUNTER1
Time out
COUNTER2
Time out
INT0
Falling edge
INT1
Falling edge
INT2
Falling/Falling & rising edge Controlled by CONT register
FSK
Falling edge
RBF/STD
Rising edge
R10~R3F (General Purpose Register)
R10~R3F (Banks 0 ~ 3) : All of them are general purpose registers.
VII.2 Special Purpose Registers
A (Accumulator)
Internal data transfer, or instruction operand holding
It's not an addressable register.
CONT (Control Register)
7
6
5
4
INT_EDGE
INT
TS
Bit 0~Bit 2(PSR0~PSR2) : TCC/WDT prescaler bits
PSR2
PSR1
PSR0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Bit 3(PAB) : Prescaler assignment bit
0/1
TCC/WDT
Bit 4 : undefined
3
PAB
TCC rate
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
2
PSR2
1
PSR1
0
PSR0
WDT rate
1:1
1:2
1:4
1:8
1:16
1:32
1:64
1:128
Bit 5(TS) : TCC signal source
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
29
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
0
Instruction clock
1
16.384kHz
Instruction clock = MCU clock/2, Refer to RA Bit 4 ~ Bit 6 for PLL and Main clock selection. See fg.17.
Bit 6(INT) : INT enable flag
0
interrupt masked by DISI or hardware interrupt
1
interrupt enabled by ENI/RETI instructions
Bit 7(INT_EDGE) : interrupt edge type of P77
0 77 's interruption source is a rising edge signal and falling edge signal.
1
P77 's interruption source is a falling edge signal.
CONT register is readable (CONTR) and writable (CONTW).
TCC and WDT :
There is an 8-bit counter available as prescaler for the TCC or WDT. The prescaler is available for the TCC
only or WDT only at the same time.
An 8 bit counter is available for TCC or WDT determined by the status of the bit 3 (PAB) of the CONT
register.
See the prescaler ratio in CONT register.
Fig.16 depicts the circuit diagram of TCC/WDT.
Both TCC and prescaler will be cleared by instructions which write to TCC each time.
The prescaler will be cleared by the WDTC and SLEP instructions, when assigned to WDT mode.
The prescaler will not be cleared by SLEP instructions, when assigned to TCC mode.
Data
Bus
Instruction clock
16.384kHz
M
U
X
M
U
X
TS
WDTE
TCC(R1)
TCC overflow interrupt
PAB
M
U
X
W DT
SYNC
2 cycles
8-bit Counter
PSR0 ~
PSR2
8-to-1 MUX
PAB
MUX
PAB
WDT timeout
Fig.17 Block diagram of TCC WDT
IOC5 (PORT5 I/O control, PORT switch, Key tone, CDAS, LCD bias)
PAGE0 (PORT5 I/O control register, PORT switch)
7
6
5
IOC57
IOC56
IOC55
4
CASPWR
3
P9SH
2
P9SL
1
P8SH
0
P8SL
Bit 0 (P8SL) : Switch low nibble I/O PORT8 or LCD segment output for share pins SEGxx/P8x pins
0
select normal P80 ~ P83 for low nibble PORT8
1
select SEG64 ~ SEG67 output for LCD SEGMENT output.
Bit 1 (P8SH) : Switch high nibble I/O PORT8 or LCD segment output for share pins SEGxx/P8x pins
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
30
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
0
select normal P84 ~ P87 for high nibble PORT8
1
select SEG68 ~ SEG71 output for LCD SEGMENT output.
Bit 2 (P9SL) : Switch low nibble I/O PORT9 or LCD segment output for share pins SEGxx/P9x pins
0
select normal P90 ~ P93 for low nibble PORT9
1
select SEG72 ~ SEG75 output for LCD SEGMENT output.
Bit 3 (P9SH) : Switch high nibble I/O PORT9 or LCD segment output for share pins SEGxx/P9x pins
0
select normal P94 ~ P97 for high nibble PORT9
1
select SEG76 ~ SEG79 output for LCD SEGMENT output.*Bit 4:general register
Bit 4 (CWPWR) : Power control of Call Waiting circuit
1/0
enable circuit /disable circuit
Bit 5~Bit 7(IOC55~IOC57) : PORT5 I/O direction control registers.
0
put the relative I/O pin as output
1
put the relative I/O pin into high impedance
PAGE1 (Key tone control, CDAS, LCD bias control)
7
6
5
4
3
KT1
KT0
KTS
CDAS
BIAS3
Bit 0~Bit 3(BIAS0~BIAS3) : LCD operation voltage selection
V1 = VDD * (5 - n/15)/5
(BIAS3 to BIAS0)
0000
0001
0010
0011
0100
:
1101
1110
1111
V1 voltage
VDD * (5-0/15)/5
VDD * (5-1/15)/5
VDD * (5-2/15)/5
VDD * (5-3/15)/5
VDD * (5-4/15)/5
:
VDD * (5-13/15)/5
VDD * (5-14/15)/5
VDD * (5-15/15)/5
2
BIAS2
1
BIAS1
0
BIAS0
Example (VDD=5V)
5V
4.93V
4.86V
4.80V
4.73V
:
4.13V
4.07V
4.0V
COMs
BIAS
MUX
LCD driver
for
COM and SEG
VC1 ~ VC5
generator
SEGs
4
BIAS3 to BIAS0
VC1 ~ VC5
Fig.18 The relation between bias and V1 to V5
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
31
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
FRAME
V1
V2
V4
V5
GND
COM0
V1
V2
V4
V5
GND
COM1
V1
V2
V4
V5
GND
COM2
V1
V2
V4
V5
GND
SEG
dark
V1
V2
V4
V5
GND
SEG
light
Fig.19a LCD waveform (1/4 bias) for 1/8 duty, 1/9 duty, 1/16 duty
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
32
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
frame
V1
v2
v3
v4
v5
Gnd
com0
V1
v2
v3
v4
v5
Gnd
com1
com2
V1
v2
v3
v4
v5
Gnd
seg
V1
v2
v3
v4
v5
Gnd
dark
V1
v2
v3
v4
v5
Gnd
seg
light
Fig.19b LCD waveform (1/5 bias) for 1/24 duty
Bit 4(CDAS) : Current DA switch
0
normal PORT66
1
Current DA output
Bit 5(KTS) : Key tone output switch
0
normal PORT67
1
key tone output .
Bit 6~Bit 7(KT0~KT1) : Key tone output frequency and its power control
KT1
0
0
1
1
KT0
0
1
0
1
Key tone frequency and power
32.768KHz/32 = 1.024kHz clock and enable
32.768KHz/16 = 2.048kHz clock and enable
32.768KHz/8 = 4.096kHz clock and enable
Power off key tone
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
IOC6 (PORT6 I/O control, CDA, PORT switch, LCD driving control)
PAGE0 (PORT6 I/O control register)
7
6
5
4
3
2
IOC67
IOC66
IOC65
IOC64
IOC63
IOC62
Bit 0~Bit 7(IOC60~IOC67) : PORT6(0~7) I/O direction control register
0
put the relative I/O pin as output
1
put the relative I/O pin into high impedance
1
IOC61
0
IOC60
PAGE1 (Current DA control,)
7
6
5
4
3
2
1
0
DAEN
DA6
DA5
DA4
DA3
DA2
DA1
DA0
Bit 0~Bit 6(DA0~DA6) : Current DA output buffer
User can use this buffer to control the output current of current DA for the driving transistor of speaker.
Bit 7 (DAEN) : Current DA enable control
0/1
disable/enable
VDD
DA6..DA0
current DA
circuit
DAOUT
PORT66
PORT66
MUX
DAEN
DAS
Fig.20 Current DA structure
PAGE 2 (PORT switch, LCD driving ability control)
7
6
5
4
3
PCSH
PCSL
PBS
LCDDV1 LCDDV0
Bit 0~Bit 2(DAL0~DAL1) : change output level of current DA
CDAL2
0
0
0
0
1
1
1
1
CDAL1
0
0
1
1
0
0
1
1
CDAL0
0
1
0
1
0
1
0
1
2
CDAL2
1
CDAL1
0
CDAL0
Output level
L0 (ratio = 1/8)
L1 (ratio = 2/8)
L2 (ratio = 3/8)
L3 (ratio = 4/8)
L4 (ratio = 5/8)
L5 (ratio = 6/8)
L6 (ratio = 7/8)
L7 (ratio =1)
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
Bit 3~Bit 4(LCDDV0~LCDDV1) : LCD driver’s driving ability control
LCDDV1
0
0
1
1
LCDDV0
0
1
0
1
Driving mode
Normal mode (ratio = 1)
Weak mode (ratio = 1/2)
Strong mode (ratio = 2)
Maximum mode (ratio = 4)
LCDDV0 ~ LCDDV1 are used to select the driving ability of LCD driver. The driving ability is Maximum
mode > Strong mode > Normal mode > Weak mode by 1/2 ratio individually. The larger driving ability it is
selected, the larger output loading of LCD driver output can be afforded and the more current consumption is
occurred. It depends on user’s application.
Bit 5(PBS) : Switch I/O PORTB or LCD segment output for share pins SEGxx/PBx
0
select normal PB0 ~ PB7 for PORTB
1
select SEG48 ~ SEG55 output for LCD SEGMENT output.
Bit 6(PCSL) : Switch low nibble I/O PORTC or LCD segment output for share pins SEGxx/PCx
0
select normal PC0 ~ PC3 for low nibble PORTC
1
select SEG56 ~ SEG59 output for LCD SEGMENT output.
Bit 7(PCSH) : Switch high nibble I/O PORTC or LCD segment output for share pins SEGxx/PCx
0
select normal PC4 ~ PC7 for high nibble PORTC
1
select SEG60 ~ SEG63 output for LCD SEGMENT output.
IOC7 (PORT7 I/O control, Key strobe(8~15))
PAGE0 (PORT7 I/O control register)
7
6
5
4
3
2
IOC77
IOC76
IOC75
IOC74
IOC73
IOC72
Bit 0~Bit 7(IOC70~IOC77) : PORT7(0~7) I/O direction control register
0
put the relative I/O pin as output
1
put the relative I/O pin into high impedance
1
IOC71
0
IOC70
PAGE1 (Key strobe control register)
7
6
5
4
3
2
1
0
STRB15
STRB14
STRB13
STRB12
STRB11
STRB10
STRB9
STRB8
Bit 0~Bit 7(STRB8~STRB15) : Key strobe control bits
These key strobe control registers correspond to SEGMENT8 to SEGMENT15. Please refer KEYSTOBE
explanation (RE page0).
IOC8 (PORT8 I/O control, , Key strobe(16~23))
PAGE0 (PORT8 I/O control register)
7
6
5
4
3
2
IOC87
IOC86
IOC85
IOC84
IOC83
IOC82
Bit 0~Bit 7(IOC80~IOC87) : PORT8(0~7) I/O direction control register
0
put the relative I/O pin as output
1
put the relative I/O pin into high impedance
1
IOC81
0
IOC80
PAGE1 (Key strobe control register)
7
6
5
4
3
2
1
0
STRB23
STRB22
STRB21
STRB20
STRB19
STRB18
STRB17
STRB16
Bit 0~Bit 7(STRB16~STRB23) : Key strobe control bits
These key strobe control registers correspond to SEGMENT16 to SEGMENT23. Please refer KEYSTOBE
explanation (RE page0).
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
IOC9 (PORT9 I/O control, DTMF receiver)
PAGE0 (PORT9 I/O control register)
7
6
5
4
3
2
IOC97
IOC96
IOC95
IOC94
IOC93
IOC92
Bit 0~Bit 7(IOC90~IOC97) : PORT9(0~7) I/O direction control register
0
put the relative I/O pin as output
1
put the relative I/O pin into high impedance
1
IOC91
0
IOC90
PAGE1 (DTMF receiver)
7
6
5
4
3
2
1
0
DREN
STD
TDP2
TDP1
Q4
Q3
Q2
Q1
Bit 0~Bit 3(Q1~Q4) : DTMF receiver decoding data
To provide the code corresponding to the last valid tone-pair received (see code table). STD signal which
steering output presents a logic high when a received tone-pair has been registered and the Q4 ~ Q1 output
latch updated and generate a interruption (IOCF has enabled); returns to logic low when the voltage on
ST/GT falls below Vtst.
F low
697
697
697
770
770
770
852
852
852
941
941
941
697
770
852
941
Any
F high
1209
1336
1477
1209
1336
1477
1209
1336
1477
1209
1336
1477
1633
1633
1633
1633
Any
Key
1
2
3
4
5
6
7
8
9
0
*
#
A
B
C
D
Any
DREN
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
Q4~Q1
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0000
xxxx
(x:unknown)
Bit 4~Bit 5(TDP1~TDP2) : Tone detection present time setup.
TDP2
0
0
1
1
TDP1
0
1
0
1
Tdp
20 ms
15 ms
10 ms
5 ms
Bit 6(STD) : Delayed steering output.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
36
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
Presents a logic high when a received tone-pair has been registered and the output latch updated; returns to
logic low when the voltage on St/GT falls below V tst.
0/1
Data invalid/data valid
Bit 7(DREN) : DTMF receiver power control
0/1
power down/ power up
Be sure open main clock before using DTMF receiver circuit . A logic low applied to DREN will shut
down power of the device to minimize the power consumption in a standby mode. It stops functions of the
filters.
In many situations not requiring independent selection of receive and pause, the simple steering circuit of
is applicable. Component values are chosen according to the following formulae:
t REC = t DP + t GTP t ID = t DA + t GTA
The value of t DP is a parameter of the device and t REC is the minimum signal duration to be recognized by the
receiver. A value for C of 0.1 uF is recommended for most applications, leaving R to be selected by the designer.
For example, a suitable value of R for a t REC of 30mS would be 300k.
Different steering arrangements may be used to select independently the guard-times for tone-present (t GTP )
and tone-absent (t GTA ). This may be necessary to meet system specifications which place both accept and
reject limits on both tone duration and inter digital pause.
Guard-time adjustment also allows the designer to tailor system parameters such as talk off and noise
immunity. Increasing t REC improves talk-off performance, since it reduces the probability that tones simulated
by speech will maintain signal condition for long enough to be registered. On the other hand, a relatively short t
REC with a long t DO would be appropriate for extremely noisy environments where fast acquisition time and
immunity to drop-outs would be required.
VDD
VDD
C
ST/GT
EST
R
Fig.21. DTMF receiver delay time control
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
37
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
TONE
EST
TONE
Tdp
5~20mS
by S/W
Tgta
30mS Typ.
Tgtp
30mS Typ.
Vtst
1/2 VDD
ST/GT
Tpq
8 uS Typ.
Q4..Q1
STD
LINE_ENG
Fig.22. DTMF receiver timing.
IOCA (CN1’s and CN2’s clock and scaling, PORT7 pull high control)
PAGE0 (Counter1’s and Counter2's clock and scale setting)
7
6
5
4
CNT2S
C2P2
C2P1
C2P0
Bit 0~Bit 2(C1P0~C1P2) : Counter1 scaling
3
CNT1S
2
C1P2
C1P2
C1P1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
Bit 3(CNT1S) : Counter1 clock source
0/1
16.384kHz/instruction clock
Bit 4~Bit 6(C2P0~C2P2) : Counter2 scaling
C1P0
0
1
0
1
0
1
0
1
COUNTER1
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
C2P2
C2P1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
Bit 7(CNT2S) : Counter2 clock source
0/1
16.384kHz/instruction clock
C2P0
0
1
0
1
0
1
0
1
COUNTER2
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
1
C1P1
0
C1P0
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
38
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
PAGE1 (PORT7 pull high control register)
7
6
5
4
3
PH77
PH76
PH75
PH74
PH73
Bit 0~Bit 7(PH70~PH77) : PORT7(0~7) pull high control register
0
disable pull high function.
1
enable pull high function
2
PH72
1
PH71
0
PH70
1
IOCB1
0
IOCB0
1
PH61
0
PH60
1
IOCC1
0
IOCC0
IOCB (PORTB I/O control, PORT6 pull high control)
PAGE0 (PORTB I/O control register)
7
6
5
4
3
2
IOCB7
IOCB6
IOCB5
IOCB4
IOCB3
IOCB2
Bit 0~Bit 7(IOCB0~IOCB7) : PORTB(0~7) I/O direction control register
0
put the relative I/O pin as output
1
put the relative I/O pin into high impedance
PAGE1 (PORT6 pull high control register)
7
6
5
4
3
PH67
PH66
PH65
PH64
PH63
Bit 0~Bit 7(PH60~PH67) : PORT6(0~7) pull high control register
0
disable pull high function.
1
enable pull high function
2
PH62
IOCC (PORTC I/O control, TONE1 control)
PAGE0 (PORT9 I/O control register)
7
6
5
4
3
2
IOCC7
IOCC6
IOCC5
IOCC4
IOCC3
IOCC2
Bit 0~Bit 7(IOCC0~IOCC7) : PORTC(0~7) I/O direction control register
0
put the relative I/O pin as output
1
put the relative I/O pin into high impedance
PAGE1 (TONE1 control register)
7
6
5
4
3
2
1
0
T17
T16
T15
T14
T13
T12
T11
T10
Bit 0~Bit 7(T10~T17) : Tone generator1‘s frequency divider and power control
Please Run in Normal mode .
Clock source = 111957Hz
T17~T10 = ‘11111111’
Tone generator1 will has 439(111957/N , N=255) Hz SIN wave output.
:
:
T17~T10 = ‘00000010’
Tone generator1 will has 55978(111957/N , N=2) Hz SIN wave output.
T17~T10 = ‘00000001’
DC bias voltage output
T17~T10 = ‘00000000’
Power off
Built-in tone generator can generate dialing tone signals for telephone of dialing tone type or just a single
tone. In DTMF application, there are two kinds of tone. One is the group of row frequency (TONE1), the other
is the group of column frequency (TONE2), each group has 4 kinds of frequency, user can get 16 kinds of
DTMF frequency totally. Tone generator contains a row frequency sine wave generator for generating the
DTMF signal which selected by IOCC page1 and a column frequency sine wave generator for generating the
DTMF signal which selected by IOCD page1. This block can generate single tone by filling one of these two
register.
If all the values are low, the power of tone generators will turn off .
TONE2 (IOCD PAGE1) High group freq.
1203.8Hz 1332.8Hz 1473.1Hz 1646.4Hz
(0X5D) (0X54)
(0X4C)
(0X44)
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
TONE1(IOCC page1)
699.7Hz(0x0A0)
772.1Hz(0x091)
854.6Hz(0x083)
940.8Hz(0x077)
Low group freq.
1
4
7
*
2
5
8
0
3
6
9
#
A
B
C
D
Also TONE1 and TONE2 are an asynchronous tone generator so the both can be used to generate Caller
ID FSK signal. In FSK generator application, TONE1 or TONE2 can generate 1200Hz Mark bit and 2200Hz
Space bit for Bell202 or 1300Hz Mark bit and 2100Hz Space bit for V.23. See the following table.
TONE1(IOCC PAGE1) or
TONE2(IOCD PAGE1)
0x5D
0x33
0x56
0x35
Freq. (Hz)
meaning
1203.8
2195.2
1301.8
2112.4
Bell202 FSK Mark bit
Bell202 FSK Space bit
V.23 FSK Mark bit
V.23 FSK Space bit
IOCD (Counter1 data, TONE2 control)
PAGE0 (Counter1 data buffer)
7
6
5
4
3
2
1
0
CN17
CN16
CN15
CN14
CN13
CN12
CN11
CN10
Bit 0~Bit 7(CN10~CN17) : Counter1's data buffer
User can read and write this buffer. Counter1 is a eight bit up-counter with 8-bit prescaler that user can use
IOCD to preset and read the counter. ( write = preset) After a interruption, it will reload the preset value.
Example: write: IOW 0x0D ; write the data at accumulator to counter1 (preset)
Example: read: IOR 0x0D ;read IOCD data and write to accumulator
PAGE1 (TONE2 control register)
7
6
5
4
3
2
1
0
T27
T26
T25
T24
T23
T22
T21
T20
Bit 0~Bit 7(T20~T27) : Tone generator1‘s frequency divider and power control. Please refer to IOCC
page1 Tone1 control register for detail.
IOCE (Counter2 data, Comparator and OP control , Energy Detector )
PAGE0 (Counter2 data buffer)
7
6
5
4
3
2
1
0
CN27
CN26
CN25
CN24
CN23
CN22
CN21
CN20
Bit 0~Bit 7(CN20~CN27) : Counter2's data buffer
User can read and write this buffer. Counter2 is a eight bit up-counter with 8-bit prescaler that user can use
IOCD to preset and read the counter. ( write = preset) After a interruption, it will reload the preset value.
Example: write: IOW 0x0E ; write the data at accumulator to counter2 (preset)
Example: read: IOR 0x0E ;read IOCE data and write to accumulator
PAGE1 (Comparator reference voltage type, PORT switch, OP)
7
6
5
4
3
2
1
0
CMPREF
CMPIN3
CMPIN2
CMPIN1
P5S2
P5S1
OPEN
OPOUT
Bit 0 (OPOUT) : Schmitt trigger output for OP block
It 's read only register which from the output of operation amplifier through a Schmitt trigger.
The Schmitt trigger has hysteresis characteristic. The input voltage is come from OP- to OPO(Schmitt
trigger input). The input voltage is from 0V to 5V and from 5V to 0V have different transition curve shown in
the following.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
40
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
OPOUT bit
1
Schmitt trigger input
0
1.2V
2.5V
5V
Fig.23 Transition curve of Schmitt trigger
Bit 1 (OPEN) : Power control for OP block
0/1
disable OP/enable OP
Bit 2~Bit 3 (P5S1~P5S2) : PORT5 switch
P5S2
P5S1
OPEN PORT55
PORT56
PORT57
Status
0 or 1
0
0
PORT55
PORT56
PORT57 Normal PORT5 IO
0
0
1
OPOP+
OPO
Power off OP block
1
0
1
OPOP+
OPO
Amp
0
1
1
OPOP+
OPO
(unused)
1
1
1
OPOP+
OPO
Amp and Schmitt
0 or 1
1
0
STGT
EST
PORT57 DTMF receiver IO
<Note> In the status items, “Amp” means OP block works as amplifier only. Schmitt trigger is output disable. It
can be a general OP amplifier.
In the status items, “Amp and Schmitt” means OP block works as amplifier and Schmitt trigger is output enable.
The output of amplifier will be fed to the input of Schmitt trigger. It can be an energy detector.
PORT57
MUX
2
EST
PORT56
MUX
OP+
2
+
-
OPOUT
P5S2,P5S1
STGT
MUX
PORT55
OP-
OPEN
2
P5S2,P5S1
Fig.24 OP structure
External reference signal
The analog signal that is presented at Cin- compares to the signal at Cin+, and the digital output of the
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
comparator is adjusted accordingly.
*The reference signal must be between Vss and Vdd.
*Threshold detector applications may be the same reference.
*The comparator can operate from the same or different reference source.
OP outputs
*The compared result is stored in the OPOUT through a Schmitt trigger.
Using as an operation amplifier
The comparator can be used as an operation amplifier, if a feedback resister is connected from the input to the
output externally.
Bit 4 (CMPIN1) : Switch for controlling PORT63 as IO PORT or a comparator input.
0
IO PORT63
1
comparator input
Bit5 (CMPIN2) : Switch for controlling PORT64 as IO PORT or a comparator input.
0
IO PORT64
1
comparator input
Bit 6 (CMPIN3) : Switch for controlling PORT65 as IO PORT or a comparator input.
0
IO PORT65
1
comparator input
Bit 7 (CMPREF) : Switch for comparator reference voltage type
0
internal reference voltage
1
external reference voltage
PAGE2 (Energy Detector)
7
6
5
4
3
2
1
0
VRSEL
DED
EDGE
WUEDD CW_SMB DEDCLK DEDPWR
DEDTHD
Bit 0 (DEDTHD) : The minimum detection threshold of Differential Energy Detector (DED)
0/1
-45dBm/-35dBm
Bit 1 (DEDPWR) : Power control of Differential Energy Detector (DED)
0/1
Power off / Power on
Bit 2 (DEDCLK) : Operating clock for Differential Energy Detector (DED)
0/1
32.768kHz/3.5826MHz
This bit is used to select operating clock for Differential Energy Detector (DED). When this bit is set to “1”,
the PLL is also enabled regardless of RA bit 6 (ENPLL) value. At this time, the Energy detector works at high
frequency mode. When this bit is set to “0”, the Energy Detector works at low frequency mode. The difference
between high frequency mode and low frequency is as follows.
DEDPWR
0
DEDCLK
X
1
0
1
0
1
1
1
1
PS. “X” means don’t care
ENPLL
X
0
1
0
1
Energy detector CLK
X
32.768 KHZ
32.768 KHZ
3.5826 MHZ
3.5826 MHZ
main CLK
Decision by
ENPLL
Disable
Enable
Disable
Enable
Bit 3(CW_SMB) : Call Waiting / short message receiver switch
0
Short message mode select. ± 5.5% CAS tone accepted frequency range deviation.(Protocol : ± 5%)
1
Call Waiting mode select. CAS tone accepted frequency range deviation is decided on CODE Option
Register bit 5 ( 1:for Europe and USA / 0:for China )
Bit 4 (WUEDD) : Wake-up control of Energy Detector (DED) output data
1/0
enable/disable
Bit 5 (EDGE) : Wake-up and interrupt trigging edge control of Energy Detector (DED) output
1/0
Falling edge trig. / Rising edge and Falling edge trig.
Bit 6 (DED) : Interrupt mask of DED output data
0
disable interrupt of DED output data
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
1
enable interrupt of DED output data
Bit 7 (VRSEL) : Reference voltage VR selection bit for Comparator
0/1 VR = VDD/VR = 2.0V, When this bit is set to “0”, V2_0 ref. circuit will be powered off.
2.0V ref. circuit is only powered on when this bit and RD page0 bit 7(CMPEN) are all set to “1”.
IOCF (Interrupt Mask Register)
7
6
5
4
RBF/STD FSK/CW
INT2
INT1
Bit 0 ~ Bit 7 : Interrupt enable bits.
0/1
disable interrupt/enable interrupt
3
INT0
2
CNT2
1
CNT1
0
TCIF
VII.3 I/O Port
PCRD
PORT
Q
P
R
Q
C
L
Q
P
R
Q
C
L
D
CLK
PCWR
IOD
D
CLK
PDWR
PDRD
0
1
M
U
X
Fig.25 The circuit of I/O port and I/O control register
The I/O registers are bi-directional tri-state I/O ports. The I/O ports can be defined as "input" or "output"
pins by the I/O control registers under program control. The I/O registers and I/O control registers are both
readable and writable. The I/O interface circuit is shown in Fig.25
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
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8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
VII.4 RESET
The RESET can be caused by
(1) Power on voltage detector reset (POVD) and power on reset
(2) WDT timeout. (if enabled and in GREEN or NORMAL mode)
(3) /RESET pin pull low
<Note> At case (1), POVD is controlled by CODE OPTION. If you enable POVD, CPU will reset at 2V under.
And CPU will consume more current about 3uA . And the power on reset is a circuit always enable. It will reset
CPU at about 1.4V and consume about 0.5uA.
Once the RESET occurs, the following functions are performed.
• The oscillator is running, or will be started.
• The Program Counter (R2) is set to all "0".
• When power on, the upper 3 bits of R3 and the upper 2 bits of R4 are cleared.
• The Watchdog timer and prescaler counter are cleared.
• The Watchdog timer is disabled.
• The CONT register is set to all "1"
• The other register (bit7..bit0)
address
R register
page0
R register
page1
IOC register
page0
IOC register
page1
4
5
6
7
8
9
A
B
C
D
E
F
00xxxxxx
xxx00000
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
00000xx0
xxxxxxxx
xxxxxxxx
00000000
00000000
00000000
00000000
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
00xxxxxx
-
11100000
11111111
11111111
11111111
11111111
00000000
11111111
11111111
00000000
00000000
00000000
00000000
00000000
11111111
11111111
00000000
00000000
00000000
00000000
00000000
00000000
-
IOC register
page2
xxxxxxxx
00000000
00000000
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
00000000
VII.5 wake-up
The controller provided sleep mode for power saving.
(1) SLEEP mode , RA(7)=0 + "SLEP" instruction .
The controller will turn off all the CPU and crystal. Other circuit with power control like key tone control
or PLL control (which has enable register), user has to turn it off by software.
Wake-up from SLEEP mode
(1) WDT time out
(2) External interrupt
(3) /RESET pull low
All these cases will reset controller , and run the program at address zero. The status just like the power on
reset.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
44
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
VII.6 Interrupt
RF is the interrupt status register which records the interrupt request in flag bits. IOCF is the interrupt
mask register. TCC timer, Counter1 and Counter2 are internal interrupt source. P70 ~ P77(INT0 ~ INT1) are
external interrupt input which interrupt sources are come from the external. If the interrupts are happened by
these interrupt sources, then RF register will generate '1' flag to corresponding register if you enable IOCF
register. Global interrupt is enabled by ENI instruction and is disabled by DISI instruction. When one of the
interrupts (when enabled) generated, will cause the next instruction to be fetched from address 008H. Once in
the interrupt service routine the source of the interrupt can be determined by polling the flag bits in the RF
register. The interrupt flag bit must be cleared in software before leaving the interrupt service routine and
enabling interrupts to avoid recursive interrupts.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
45
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
VII.7 Instruction Set
Instruction set has the following features:
(1) Every bit of any register can be set, cleared, or tested directly.
(2) The I/O register can be regarded as general register. That is, the same instruction can operates on I/O
register.
The symbol "R" represents a register designator which specifies which one of the 64 registers (including
operational registers and general purpose registers) is to be utilized by the instruction. Bits 6 and 7 in R4
determine the selected register bank. "b'' represents a bit field designator which selects the number of the bit,
located in the register "R'', affected by the operation. "k'' represents an 8 or 10-bit constant or literal value.
INSTRUCTION BINARY
HEX
MNEMONIC
OPERATION
STATUS
Instruction
AFFECTED
cycle
0 0000 0000 0000
0000 NOP
No Operation
None
1
0 0000 0000 0001
0001 DAA
Decimal Adjust A
C
1
0 0000 0000 0010
0002 CONTW
None
1
A → CONT
0 0000 0000 0011
0003 SLEP
1
0 → WDT, Stop oscillator T,P
0 0000 0000 0100
0004 WDTC
T,P
1
0 → WDT
0 0000 0000
rrrr
000r IOW R
None
1
A → IOCR
0 0000 0001 0000
0010 ENI
Enable Interrupt
None
1
0 0000 0001 0001
0011 DISI
Disable Interrupt
None
1
0 0000 0001 0010
0012 RET
None
2
[Top of Stack] → PC
0 0000 0001 0011
0013 RETI
None
2
[Top of Stack] → PC
Enable Interrupt
0 0000 0001 0100
0014 CONTR
None
1
CONT → A
0 0000 0001
rrrr
001r IOR R
None
1
IOCR → A
0 0000 0010 0000
0020 TBL
2
R2+A → R2 bits 9,10 do Z,C,DC
not clear
0 0000 01rr
rrrr
00rr
MOV R,A
None
1
A→ R
0 0000 1000 0000
0080 CLRA
Z
1
0→A
0 0000 11rr
rrrr
00rr
CLR R
Z
1
0→R
0 0001 00rr
rrrr
01rr
SUB A,R
Z,C,DC
1
R-A → A
0 0001 01rr
rrrr
01rr
SUB R,A
Z,C,DC
1
R-A → R
0 0001 10rr
rrrr
01rr
DECA R
Z
1
R-1 → A
0 0001 11rr
rrrr
01rr
DEC R
Z
1
R-1 → R
0 0010 00rr
rrrr
02rr
OR A,R
Z
1
A∨ R→A
0 0010 01rr
rrrr
02rr
OR R,A
Z
1
A∨ R→ R
0 0010 10rr
rrrr
02rr
AND A,R
Z
1
A& R→A
0 0010 11rr
rrrr
02rr
AND R,A
Z
1
A&R→ R
0 0011 00rr
rrrr
03rr
XOR A,R
Z
1
A⊕R→A
0 0011 01rr
rrrr
03rr
XOR R,A
Z
1
A⊕R→R
0 0011 10rr
rrrr
03rr
ADD A,R
Z,C,DC
1
A+R→A
0 0011 11rr
rrrr
03rr
ADD R,A
Z,C,DC
1
A+R→R
0 0100 00rr
rrrr
04rr
MOV A,R
Z
1
R→A
0 0100 01rr
rrrr
04rr
MOV R,R
Z
1
R→R
0 0100 10rr
rrrr
04rr
COMA R
Z
1
/R → A
0 0100 11rr
rrrr
04rr
COM R
Z
1
/R → R
0 0101 00rr
rrrr
05rr
INCA R
Z
1
R+1 → A
0 0101 01rr
rrrr
05rr
INC R
Z
1
R+1 → R
0 0101 10rr
rrrr
05rr
DJZA R
None
2 if skip
R-1 → A, skip if zero
0 0101 11rr
rrrr
05rr
DJZ R
None
2 if skip
R-1 → R, skip if zero
0 0110 00rr
rrrr
06rr
RRCA R
C
1
R(n) → A(n-1)
R(0) → C, C → A(7)
0 0110 01rr
rrrr
06rr
RRC R
C
1
R(n) → R(n-1)
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
46
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
0 0110 10rr
rrrr
06rr
RLCA R
0 0110 11rr
rrrr
06rr
RLC R
0 0111 00rr
rrrr
07rr
SWAPA R
0
0
0
0
0
0
0
1
0111
0111
0111
100b
101b
110b
111b
00kk
01rr
10rr
11rr
bbrr
bbrr
bbrr
bbrr
kkkk
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
kkkk
07rr
07rr
07rr
0xxx
0xxx
0xxx
0xxx
1kkk
SWAP R
JZA R
JZ R
BC R,b
BS R,b
JBC R,b
JBS R,b
CALL k
1
1
1
1
1
1
01kk
1000
1001
1010
1011
1100
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
1kkk
18kk
19kk
1Akk
1Bkk
1Ckk
JMP k
MOV A,k
OR A,k
AND A,k
XOR A,k
RETL k
1 1101 kkkk
1 1110 0000
kkkk
0001
1Dkk
1E01
SUB A,k
INT
1 1110 100k kkkk
1 1111 kkkk
kkkk
1E8k
1Fkk
PAGE k
ADD A,k
R(0) → C, C → R(7)
R(n) → A(n+1)
R(7) → C, C → A(0)
R(n) → R(n+1)
R(7) → C, C → R(0)
R(0-3) → A(4-7)
R(4-7) → A(0-3)
R(0-3) ↔ R(4-7)
R+1 → A, skip if zero
R+1 → R, skip if zero
0 → R(b)
1 → R(b)
if R(b)=0, skip
if R(b)=1, skip
PC+1 → [SP]
(Page, k) → PC
(Page, k) → PC
k→A
A∨k→A
A& k →A
A⊕k→A
k → A, [Top of Stack] →
PC
k-A → A
PC+1 → [SP]
001H → PC
K->R5(4:0)
k+A → A
C
1
C
1
None
1
None
None
None
None
None
None
None
None
1
2 if skip
2 if skip
1
1
2 if skip
2 if skip
2
None
None
Z
Z
Z
None
2
1
1
1
1
2
Z,C,DC
None
1
1
None
Z,C,DC
1
1
VII.8 CODE Option Register
The controller has one CODE option register which is not part of the normal program memory. The option bits
cannot be accessed during normal program execution.
CODE Option Register1 ( Program ROM)
7
6
5
4
3
2
1
/POVD
CWMODE PACKSEL1 PACKSEL0
Bit 0(/DED) : Differential Energy Detect function enable bit
0/1
enable / disable DED function
Bit 1~2(PACKSEL0~PACKSEL1) : package select.
PACKSEL1
X
1
0
PACKSEL0
1
0
0
PACKAGE
134 pin die
128 pin QFPA
128 pin QFPB
0
/DED
PS
PC0~PC3 floating
PC0~PC5 floating; add EGIN pin
Bit 3(CWMODE) : CAS tone (2130 Hz plus 2750 Hz ) accepted frequency range select.
± 2% Call waiting accepted frequency range deviation.(Application for China protocol :
0
± 1.5% )
± 1.2% Call waiting accepted frequency range deviation.(Application for Europe and USA protocol :
1
± 0.5% )
Bit 4 (/POVD) : Power on voltage detector, 0/1
enable/disable
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
47
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
/POVD
1
0
2.2V /POVD reset voltage
No
Yes (2.2V)
2.2V Power on reset voltage
Yes (2.2V)
No
Sleep mode current (VDD=5V)
1uA
15uA
VII.9 CALL WAITING Function Description
DATA
TIP
FSK
demodulator
RING
/CD
GAIN
CWTIP
+
Vdd/2
Filter
Detection
block
CAS
Voltage
reference
Fig.26 Call Waiting Block Diagram
Call Waiting service works by alerting a customer engaged in a telephone call to a new incoming call. This
way the customer can still receive important calls while engaged in a current call. The CALL WAITING
DECODER can detect CAS(Call-Waiting Alerting Signal 2130Hz plus 2750Hz) and generate a valid signal on
the data pins.
The call waiting decoder is designed to support the Caller Number Deliver feature, which is offered by
regional Bell Operating Companies.
In a typical application, after enabling CW circuit (by IOC5 page0 bit4 CWPWR) this IC receives Tip and
Ring signals from twisted pairs. The signals as inputs of pre-amplifier, and the amplifier sends input signal to a
band pass filter. Once the signal is filtered, the Detection block decodes the information and sends it to R3
register bit7 . The output data made available at R3 CAS bit.
The data is CAS signals. The CAS is normal high. When this IC detects 2130Hz and 2750Hz frequency,
then CAS pin goes to low.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
48
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
VII.10 Differential Energy Detector (DED)
EGIN1
EGIN2
DEDD
DED
DEDPWR DEDTHD
EGCLK
Fig.27 DED
The Differential Energy Detector is differential input level and zero crossing detector named as DED. It
can detect any incoming AC signal above its threshold level and output corresponding zero-crossing frequency
pulse. For this energy detector, the user can set it’s minimum detection threshold level at –35dBm or –45dBm
by DEDTHD bit. All the minimum detection value can be achieved under input capacitor more than 4700pF and
input resistor around 100k ohms. The energy detector has power control by IOCE PAGE2 bit 1 (DEDPWR).
Register bits of Energy Detector :
Register bits
RE bit 7 (DEDD)
IOCE PAGE2
bit 5 (EDGE)
IOCE PAGE2
bit 4 (WUEDD)
RE PAGE1 bit 6 (DED)
IOCE PAGE2 bit6
(DED)
IOCE PAGE2 bit 0
(DEDTHD)
IOCE PAGE2 bit 1
(DEDPWR)
IOCE PAGE2 bit 2
(DEDCLK)
Descriptions
DEDD : Output data of DED
EDGE : edge control of DED output data
1/0 => Falling edge trig. / Rising edge and Falling edge trig.
WUEDD : Wake-up control of DED output data
1/0 => enable/disable
DED : Interrupt flag of DED output data
DED : Interrupt mask of DED output data
1/0
enable/disable interrupt of DED output data
DEDTHD : Minimum detection threshold of DED
0/1
-45dBm/-35dBm
DEDPWR : Power control of DED
0/1
power off/power on
DEDCLK : operating clock of DED
0 : low frequency clock
1 : high frequency clock
VIII. Absolute Operation Maximum Ratings
RATING
DC SUPPLY VOLTAGE
INPUT VOLTAGE
OPERATING TEMPERATURE RANGE
SYMBOL
VDD
Vin
Ta
VALUE
-0.3 To 6
-0.5 to VDD +0.5
0 to 70
UNIT
V
V
℃
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
49
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
IX. DC Electrical Characteristic
(Operation current consumption for Analog circuit)
Parameter
Symbol Condition
Min
Operation current for FSK
I_FSK
VDD=5V, CID power on
VDD=3V, CID power on
Operation current for CW
I_CW
VDD=5V, CID power on
VDD=5V, CID power on
Operation current for DTMF I_DR
VDD=3V, DTMFr power on
receiver
VDD=3V, DTMFr power on
Operation current for TONE I_DTMF VDD=5V, DTMF power on
generator
VDD=3V, DTMF power on
Current DA output current
I_DA
VDD=5V, CDA power on
VDD=3V, CDA power on
Operation current for OP
I_OP
VDD=5V, PT power on
VDD=3V, PT power on
Operation current for
I_CMP
VDD=5V, PT power on
Comparator
VDD=3V, PT power on
(Ta=25°C, VDD=5V±5%, VSS=0V)
Parameter
Symbol
Input Leakage Current for IIL1
input pins
Input Leakage Current for IIL2
bi-directional pins
Input High Voltage
VIH
Input Low Voltage
VIL
Input
High
Threshold VIHT
Voltage
Input Low Threshold Voltage VILT
Clock Input High Voltage
VIHX
Clock Input Low Voltage
VILX
Output High Voltage
VOH1
(port5,8,9,B,C)
(port6,7)
Output Low Voltage
VOL1
(port5,8,9,B,C)
(port6,7)
Pull-high current
IPH
Power down current
(SLEEP mode)
ISB1
Low clock current
(GREEN mode)
ISB2
Operating supply current
(NORMAL mode)
ICC
Tone generator
voltage
Condition
VIN = VDD, VSS
Min
Typ
2.5
2.0
2.5
2.0
2.5
2.0
0.9
0.5
2.5
2.0
0.17
0.1
0.15
0.13
Max
4.0
3.5
4.0
3.5
4.0
3.5
1.2
0.8
4
3.5
Typ
Max Unit
±1
µA
VIN = VDD, VSS
/RESET, TCC,RDET1
OSCI
OSCI
IOH = -5mA
IOH = -8mA
IOL = 5mA
0.3
0.2
reference Vref2
mA
mA
mA
µA
0.8
V
V
V
0.8
1.8
1.2
2.0
2.0
0.5
mA
±1
2.0
IOL = 8mA
Pull-high active input pin at
VSS
All input and I/O pin at
VDD, output pin floating,
WDT disabled
CLK=32.768KHz, All analog
circuit disable , All input and
I/O pin at VDD, output pin
floating, WDT disabled, LCD
disable
/RESET=High, PLL enable
CLK=3.579MHz, output pin
floating and LCD enable, all
analog circuit disable
mA
mA
2.0
/RESET, TCC, RDET1
Unit
mA
V
V
V
V
0.4
V
V
-10
0.4
-15
V
µA
1
4
µA
35
50
µA
2.8
3.5
mA
0.7
VDD
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
50
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
Differential Energy Detector (DED) (Ta=25°C, VDD=5.0V±5%, VSS=0V)
Symbol
Parameter
Condition
Min
EGIN1
Operating current for SED SEDCLK bit = 0
EGIN2
Operating current for SED SEDCLK bit = 0
Typ
20
20
Max
25
25
Unit
UA
UA
X. AC Electrical Characteristic
CPU instruction timing (Ta=25°C, VDD=5V, VSS=0V)
Parameter
Symbol Condition
Min
Input CLK duty cycle
Dclk
45
Instruction cycle time
Tins
32.768kHz
3.579MHz
Device delay hold time
Tdrh
TCC input period
Ttcc
Note 1
(Tins+20)/N
Watchdog timer period
Twdt
Ta = 25°C
Note 1: N= selected prescaler ratio.
FSK AC Characteristic (Vdd=5V,Ta=+25°C)
CHARACTERISTIC
FSK sensitivity
Low Level Sensitivity Tip & Ring @SNR 20dB
High Level Sensitivity Tip & Ring @SNR 20dB
Signal Reject
FSK twist
Positive Twist (High Level)
Positive Twist (Low Level)
Negative Twist (High Level)
Negative Twist (Low Level)
Typ
50
60
550
16
16
Min
Typ
Max Unit
-40
-48
0
-51
dBm
dBm
dBm
+10
+10
-6
-6
CW AC Characteristic (Vdd=5V,Ta=+25°C)
CHARACTERISTIC
CW sensitivity
Sensitivity @SNR 20dB
Low Tone Frequency 2130Hz
High Tone Frequency 2750Hz
CW twist
Twist
Min
Max
55
Unit
%
us
ns
ms
ns
ms
dB
dB
dB
dB
Typ
Max Unit
-38
±1.2
±1.2
dBm
%
%
±7
dB
DTMFr (DTMF receiver) AC Characteristic (Vdd=5V,Ta=+25°C)
CHARACTERISTIC
Min Typ Max
DTMFr
Low Level Signal Sensitivity
-36
High Level Signal Sensitivity
0
Low Tone Frequency
±2
High Tone Frequency
±2
DTMFr noise endurance
Signal to noise ratio
15
TONE generators for AC Characteristic (Vdd=5V,Ta=+25°C)
CHARACTERISTIC
Min Typ
Unit
dBm
dBm
%
%
dB
Max Unit
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
51
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
Tone1/Tone2 signal strength (root mean square voltage)
Tone1 signal strength V1rms (ps1)
130 155 180
Tone2 signal strength V2rms (ps1)
1.259V1rms
ｍV
ｍV
Tone twist
(Tone1 – Tone2) twist
-2
dB
Tone frequency deviation
Frequency deviation
±1
%
(ps1) : V1rms and V2rms has 2 dB difference. It means 20log(V2rms/V1rms) = 20log1.259 = 2 (dB)
(DED AC Characteristic)(Vdd=+5.0V,Ta=+25℃)
CHARACTERISTIC
Input sensitivity TIP and RING for DED, DEDTHD bit=0
Input sensitivity TIP and RING for DED, DEDTHD bit=1
MIN
Timing characteristic (Vdd=5V,Ta=+25°C)
Description
Symbol Min Typ
Oscillator timing characteristic
OSC start up
32.768kHz
Tosc
3.579MHz PLL
FSK timing characteristic
Carrier detect low
Tcdl
-10
Data out to Carrier det low
Tdoc
-10
Power up to FSK(setup time)
Tsup
-15
End of FSK to Carrier Detect high
Tcdh
-CW timing characteristic
CAS input signal length
Tcasi
80
(2130 ,2750 Hz @ -20dBm )
Call waiting data detect delay time
Tcwd
42
Call waiting data release time
Tcwr
26
DTMF receiver timing characteristic
Tone Present Detection Time
Tdp
(ps1)
the guard-times for tone-present
Tgtp
30
(C=0.1uF, R=300K)
the guard-times for tone-absent
Tgta
30
(C=0.1uF, R=300K)
Propagation Delay (St to Q)
Tpq
8
Tone Absent Detection Time
Tda
(ps2)
SPI timing characteristic (CPU clock 3.58MHz and Fsco = 3.58Mhz /2)
/SS set-up time
Tcss
560
/SS hold time
Tcsh
250
SCLK high time
Thi
250
SCLK low time
Tlo
250
SCLK rising time
Tr
15
SCLK falling time
Tf
15
SDI set-up time to the reading edge of SCLK
Tisu
25
SDI hold time to the reading edge of SCLK
Tihd
25
SDO disable time
Tdis
(ps1) : Controlled by software
(ps2) : Controlled by RC circuit.
TYP
-45
-35
MAX
---
Max
Unit
400
10
ms
14
20
20
4
ms
ns
ms
ms
UNIT
dBm
dBm
ms
ms
ms
ms
mS
us
ms
ns
30
30
560
ns
ns
ns
ns
ns
ns
ns
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
52
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
XI. Timing Diagrams
ins
Fig.28 AC timing
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
53
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
FIRST RING
2 SECONDS
0.5 SEC
0.5 SEC
SECOND RING
2SECONDS
TIP/RING
/ TRIG
Tcdh
Tcdl
/CD
Tdoc
DATA
DATA
(internal
clock)
3.579 M Hz
Tsup
/358E
Fig.29 FSK timing diagram
p lu g
on
events
normal
C AS
Tc a s i
in
hook
in use
Tc w d
Tc w r
CAS
CW PW R
power off
power on
Fig.30 Call waiting timing diagram
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
54
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
TONE
EST
TONE
Tdp
5~20mS
by S/W
Tgta
30mS Typ.
Tgtp
30mS Typ.
Vtst
1/2 VDD
ST/GT
Tpq
8 uS Typ.
Q4..Q1
STD
LINE_ENG
Fig.31 DTMF receiver timing diagram
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
55
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
XII. Application Circuit
(Using 808 built-in LCD driver)
LCD pannel
SEGMENT
COMMON
VC1
0.1u
VC2
0.1u
VC3
Key matrix
0.1u
VC4
SEG23
0.1u
VC5
0.1u
VDD,AVDD
SEG10
VDD
XIN
27p
32.768k
SEG9
XO UT
27p
PLLC
EM 78808
SEG8
0.1u
AVSS,GND
P70
P71
P72 P73
EGIN2
4700p
47K
4700p
47K
4700p
47K
4700p
47K
TIP
TIP
LINE
TEST
RING
VDD
EGIN1
STGT
RING
CWGS
EST
CWIN
47p
150K
39K
Line
Interface
4700p
Speech
Network
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
56
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
(Using external EMC LCD driver)
LCD pannel
SEGMENT
COMMON
LCD driver
EM 9L8580
( support max 65x132 pixels)
D0..D7
CLK
p65
8
A0
/RD
/WR
p60
p61 p63
(SCK) (SD0)
/CS1
p64
Key matrix
P87~P80
SEG23
VDD,AVDD
VDD
XIN
27p
SEG10
32.768k
XO UT
27p
0.1u
PLLC
AVSS,GND
EGIN2
4700p
47K
4700p
47K
EM 78808
SEG8
P70 P71
EGIN1
TEST
P72 P73
VDD
TIP
TIP
LINE
SEG9
4700p
47K
RING
4700p
47K
RING
CWGS
STGT
CWGS
EST
CWIN
47p
150K
39K
Line
Interface
4700p
Speech
Network
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
57
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
附 錄 : EM78R808 SPEC. (SPEC. is only shown the differences with
EM78808)
II.Feature
CPU
•Operating voltage range : 2.2V∼5.5V
•32K×13 addressing Program ROM
•4M×8 addressing data ROM.
•8K×8 on-chip data RAM
IV.Pin Configuration
SEG45
SEG44
SEG43
SEG42
SEG41
SEG40
SEG39
SEG38
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
COM23/SEG7
COM22/SEG6
COM21/SEG5
COM20/SEG4
COM19/SEG3
COM18/SEG2
COM17/SEG1
COM16/SEG0
COM 15
COM 14
COM 13
COM 12
COM 11
COM 10
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
156
155
154
153
152
151
150
149
148
147
146
145
144
143
142
141
140
139
138
137
136
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
SEG46
SEG47
SEG48
SEG49
SEG50
SEG51
SEG52
SEG53
SEG54
SEG55
SEG56
SEG57
SEG58
SEG59
SEG60
SEG61
SEG62
SEG63
SEG64
SEG65
SEG66
SEG67
SEG68
SEG69
SEG70
SEG71
SEG72
SEG73
SEG74
SEG75
SEG76
SEG77
SEG78
SEG79
ROMA19
ROMA18
ROMA17
ROMA16
ROMA15
ROMA14
ROMA13
ROMA12
ROMA11
ROMA10
ROMA9
ROMA8
ROMA7
ROMA6
ROMA5
ROMA4
ROMA3
ROMA2
CA5
CA6
CA7
CA8
CA9
CA10
CA11
CA12
CA13
CA14
CD0
CD1
CD2
CD3
CD4
CD5
CD6
CD7
CD8
CD9
CD10
CD11
CD12
IOD0
IOD1
IOD2
IOD3
IOD4
IOD5
IOD6
IOD7
INSEND
IRSEL
PH1OUT
X2OUT
/HOLD
ROM EN1
ROM EN2
ROM EN3
ROM EN4
ROM WRITE
ROMREAD
ROMD0
ROMD1
ROMD2
ROMD3
ROMD4
ROMD5
ROMD6
ROMD7
ROMA0
ROMA1
VC5
VC4
VC3
VC2
VC1
XIN
XOUT
VDD,AVDD
PLLC
TONE
TIP/EGIN1
RING/EGIN2
CWGS
CWIN
GND,AVSS
/RESET
P70/INT0
P71/INT0
P72/INT0
P73 /INT0
P74 /INT1
P75 /INT1
P76 /INT1
P77 /INT2
P60/SCK
P61/SDO
P62/SDI
P63/CMP1
P64/CMP2
P65/CMP3
P66/DAOUT
P67/KTONE
P55/OP-/STGT
P56/OP+/EST
P57/OPO
ERS
CA-1
CA0
CA1
CA2
CA3
CA4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM0
Fig .32
EM78R808 pin configuration
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
58
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
VI. Pin Descriptions
PIN
POWER
VDD
AVDD
I/O
DESCRIPTION
POWER
GND
AVSS
POWER
Digital power
Analog power
They connect together when package as 128 pin QFP.
Digital ground
Analog ground
They connect together when package as 128 pin QFP.
CLOCK
XIN
XOUT
PLLC
I
O
I
Input pin for 32.768 kHz oscillator
Output pin for 32.768 kHz oscillator
Phase loop lock capacitor, connect a capacitor 0.01u to 0.047u with
GND
LCD
COM0..COM15
SEG0...SEG7
SEG8..SEG47
SEG48..SEG55
SEG56..SEG63
SEG64..SEG71
SEG72..SEG79
VC1..VC5
O
O
(COM16..COM23)
O (I/O : PORTB)
O (I/O : PORTC)
O (I/O : PORT8)
O (I/O : PORT9)
I
Common driver pins of LCD drivers
Segment driver pins of LCD drivers
SEG0 to SEG7 are share with COM16 to COM23
SEG8 to SEG79 are shared with IO PORT.
FSK , TONE ,
KTONE
TIP
I
RING
I
TONE
O
KTONE
O (PORT67)
CW
O
CWGS
I
CWIN
DTMF
receiver
EST
O
STGT
I/O
OP
OPOP+
OPO
SERIAL IO
I (PORT55)
I (PORT56)
O (PORT57)
Reference voltage input. Each one connect a capacitor (0.1u) with
GND.
Should be connected with TIP side of twisted pair lines for FSK.
Should be connected with RING side of twisted pair lines for FSK.
Dual tone output pin
Key tone output. Shared with PORT67.
Gain adjustment of single-ended input OP Amp
Single-ended input OP Amp for call waiting decoder
Early steering output. Presents a logic high immediately when the
digital algorithm detects a recognizable tone-pair (signal condition).
Any momentary loss of signal condition will cause EST to return to a
logic low. This pin shared with PORT56.
Steering input/guard time output (bi-directional). A voltage greater
than Vtst detected at ST causes the device to register the detected
tone-pair and update the output latch.
A voltage less than Vtst frees the device to accept a new tone-pair. The
GT output acts to reset the external steering time-constant; its state is
a function of EST and the voltage on ST . This pin shared with
PORT55.
The negative Vin input pin of the OP. This pin shared with PORT55.
The positive Vin input pin of the OP. This pin shared with PORT56.
The output of OP. This pin shared with PORT57.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
59
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
SCK
SDO
SDI
Comparator
CMP1
CMP2
CMP3
CURRENT
DA
DAOUT
IO (PORT60)
O (PORT61)
I (PORT62)
I
I
I
(PORT63)
(PORT64)
(PORT65)
Master: output pin, Slave: input pin. This pin shared with PORT60.
Output pin for serial data transferring. This pin shared with PORT61.
Input pin for receiving data. This pin shared with PORT62.
Comparator input pins. Shared with PORT63, PORT64 and
PORT65.
O (PORT66)
Current DA output pin. It can be a control signal for sound
generating.
Shared with PORT66.
IO
P55 ~P57
P60 ~P67
I/O
I/O
P70 ~ P77
I/O
P80 ~ P87
I/O
P90 ~ P97
I/O
PB0 ~ PB7
I/O
PC0 ~ PC7
I/O
INT0
PORT70..73
INT1
PORT74..76
INT2
PORT77
/RESET
X2OUT
CA-1
I
O
O
ERS
I
CA0~CA14
O
CD0~CD12
IRSEL
I
O
INSEND
O
/HOLD
I
PORT 5 can be INPUT or OUTPUT port each bit.
PORT 6 can be INPUT or OUTPUT port each bit.
Internal pull high.
PORT 7 can be INPUT or OUTPUT port each bit.
Internal Pull high function.
Auto key scan function.
Interrupt function.
PORT 8 can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT 9 can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT B can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT C can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
Interrupt sources which has the same interrupt flag. Any pin from
PORT70 to PORT73 has a falling edge signal, it will generate a
interruption.
Interrupt sources which has the same interrupt flag. Any pin from
PORT74 to PORT76 has a falling edge signal, it will generate a
interruption.
Interrupt source. Once PORT77 has a falling edge or rising edge
signal (controlled by CONT register), it will generate a interruption.
Low reset
System clock output.
CA-1 is used as address line to select low-order data (8 bits, through
CD0~CD7) or high-order data (5 bits, through CD0~CD4)
ERS=1 => CA-1 NO USE
ERS=0 => CA-1=0 HIGH ORDER DATA
CA-1=1 LOW ORDER DATA
Input pin used to select the external ROM data bus through bus
CD0~D12 or CD0~CD7 only.
HIGH/LOW = CD0~CD12 /
CD0~CD7.
Program code address bus. CA0~CA14 are address output pins for
external programming ROM access.
Data access in terms of CA0 ~ CA12 addressing.
IRSEL is an output pin used to select an external EVEN/ODD
ROM.
Used to indicate the instruction completion and ready for next
instruction.
Microcontroller hold request.
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
60
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
IOD0~IOD7
PH1OUT
O
O
I/O data bus.
Phase 1 output
ROMA0..RO
MA19
ROMD0..RO
MD7
ROMEN1..R
OMEN4
O
External data ROM address
IO
External data ROM data bus
O
Data ROM enable pin. User can select one of four external DATA
ROM by these enable signal. Please refer to RB address of data
ROM.
ROMA21,ROMA20
00
ROMEN4, ROMEN3, ROMEN2,
ROMEN1
1,1,1,0
01
1,1,0,1
10
1,0,1,1
11
ROMREAD
O
ROMWRITE
O
0,1,1,1
External data ROM reading signal. Normal high . When you read
data ROM, it will generate a low pulse a instruction long.
External data ROM writing signal. Normal high . When you write
data ROM, it will generate a low pulse a instruction long.
VII Operational Registers
R9
PAGE1 (LCD address MSB bit, Data ROM address bits)
7
6
5
4
3
2
1
0
LCDA8
DROM_A21 DROM_A20 DROM_A19 DROM_A18 DROM_A17 DROM_A16
Bit 0~Bit 5(DROM_A16~DROM_A21) : Data ROM address(16~21) for ROM reading.
Bit 6 : unused
Bit 7(LCDA8) : MSB of LCD address for LCD RAM reading or writing
Other LCD address bits LCDA7 ~ LCDA0 are set from RA PAGE1 Bit 7 ~ Bit 0.
For LCD address access over 0xFFH, set this bit to “1”; otherwise set this bit to “0”.
IOC5
PAGE2 ( Stack Pointer )
7
6
5
4
3
2
1
0
STKF
STKM
STKP5
STKP4
STKP3
STKP2
STKP1
STKP0
Bit 0~Bt 5(STKP0~STKP5) : Stack Point selection bits( User must enable CODE Option Register bit 2 before
using Stack pointer function )
Stack5
0
0
0
0
0
0
0
0
Stack4
0
0
0
0
:
:
1
1
STKP3
0
0
0
0
:
:
1
1
STKP2
0
0
0
0
:
:
1
1
STKP1
0
0
1
1
:
:
1
1
STKP0
0
1
0
1
:
:
0
1
Stack Point
Stack 0
Stack 1
Stack 2
Stack 3
:
:
Stack 30
Stack 31
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
61
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
1
:
0
:
0
:
0
:
0
:
0
:
Stack 32
:
User can read bit 5 .. bit 0 to understand how many stack layer that program used . Bit 5 .. bit 0 is a six bit
counter. The counter will incrementally after user use internal , external interrupt or “CALL” instruction and it
will decrement when user use “RET” or “RETI” instruction. When Bit6(STKM) is set to 1 and bit 5 .. bit 0 are
0b011110
0b011111 , interrupt will occur.
Bit 6(STKM) : Stack overflow mask bit.
0
STK interrupt disable.
1
STK interrupt enable.
Bit 7(STKF) : Stack Point overflow interrupt flag bit.
STKF will set to 1 when bit 5 .. bit 0 are 0b011110
IX
0b011111
AC Electrical Characteristic
Tdiea
Delay from Phase 3 end to Cl=100pF
INSEND active
Tdiei
Delay from Phase 4 end to Cl=100pF
INSEND inactive
Tiew
INSEND pulse width
Tdca
Delay from Phase 4 end to CA C1=100pF
Bus valid
Tacc
ROM data access time
Tcds
ROM data setup time
Tcdh
ROM data hold time
Tdca-1
Delay time of CA-1
C1=10
0pF
Note 1: N= selected prescaler ratio.
30
ns
30
ns
30
ns
ns
30
ns
ns
ns
ns
30
100
20
20
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
62
8/1/2004 (V3.1)
EM78808
8-bit Micro-controller
E R S =1 , CA-1 =D IS AB LE
3
4
1
2
3
4
1
2
3
2
3
CLK
Td ie i
Td ie a
/INSEND
Tie w
Td c a
CA 14 : 0
Ta c c
Tc d s
Tc d h
CD 12 : 0
E R S =0 , CA-1 =0 H IGH OR D E R D AT A
CA-1 =1 LO W OR D E R D AT A
3
4
1
2
3
4
1
CLK
Td ie a
Td ie i
/INSEND
Td c a 1
Tie w
CA-1
Td c a
CA 14 : 0
High order
DATA
CD 7 : 0
Ta c c
Tc d s
Low order
DATA
Tc d h
Fig.33 Program ROM access timing
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
63
8/1/2004 (V3.1)