em78p811 ELAN Microelectronics Corp, em78p811 Datasheet - Page 17

• Manufacturer Part Number: em78p811
• Description: 8-bit Micro-controller
• Manufacturer: ELAN Microelectronics Corp

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* This specification is subject to be changed without notice.
4. IOCA (CALLER ID RAM,IO ,PAGE Control Register)(read/write,initial "00000000")
3. IOC6 ~ IOC9 (I/O Port Control Register)
5. IOCB (LCD ADDRESS)
will count from “00”.
6. IOCC (LCD DATA)
will count from “00”.
7. IOCD (Pull-high Control Register)
PAGE0 : Bit7 ~ Bit0 = LCD RAM data register
PAGE1 : 8 bit up-counter (COUNTER2) preset and read out register . ( write = preset) After a interruption , it
PAGE0:
PAGE0 : Bit6 ~ Bit0 = LCDA6 ~ LCDA0
PAGE1 : 8 bit up-counter (COUNTER1) preset and read out register . ( write = preset ) . After a interruption , it
* CONT register is readable and writable.
* Five I/O direction control registers.
* "1" put the relative I/O pin into high impedance, while "0" put the relative I/O pin as output.
* User can see IOCB register how to switch to normal I/O port.
* Bit0 unused
* Bit4~Bit1:"000" to "1001" are ten blocks of CALLER ID RAM area. User can use 2.5K RAM with RC ram
* Bit 5 unused
* Bit6: port8 low nibble switch, 0/1= normal I/O port/SEGMENT output .
* Bit7: port8 high nibble switch , 0/1= normal I/O port/SEGMENT output
P8SH
PH7
7
address.
7
The LCD display data is stored in the data RAM . The relation of data area and COM/SEG pin is as below:
COM15 ~ COM8
40H (Bit15 ~ Bit8)
41H
:
:
7BH
7CH
7DH
7EH
7FH
PH6
6
P8SL
6
PH5
5
5
-
PH4
4
COM7 ~ COM0
01H
:
:
3BH
3CH
3DH
3EH
3FH
00H (Bit7 ~ Bit0)
CALL_4 CALL_3 CALL_2 CALL_1
PH3
3
4
PH2
2
16
3
PH1
SEG0
SEG1
:
:
SEG59
Empty
Empty
Empty
Empty
1
2
PH0
0
1
8-bit OTP Micro-controller
0
0
EM78P811