EM78869 데이터 시트보기 (PDF) - ELAN Microelectronics
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EM78869 Datasheet PDF : 38 Pages
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EM78869
8-Bit RISC Type Microprocessor
Bit 7:
(P8SH) Port 8 high nibble switch
0: Normal I/O port
1: Segment output
6.2.9 IOCB (LCD Address, Counter 1 Preset Register)
Page 0 (LCD Address)
Bit 7
0
Bit 6
Bit 5
LCDA6 LCDA5
Bit 4
LCDA4
Bit 3
LCDA3
Bit 2
LCDA2
Bit 1
LCDA1
Bit 0
LCDA0
Bit 0 ~ 6: (LCDA0~LCDA6) LCD address
The LCD display data is stored in the data RAM. The relation between data area
and COM/SEG pin is as follows:
SEGMENT
Unused
Unused
:
:
SEG 20
SEG 21
:
:
SEG 58
SEG 59
Unused
Unused
Unused
SEGMENT
Unused
Unused
:
SEG 20
SEG 21
:
:
SEG 58
SEG 59
Unused
:
Unused
IOCC (COM7 ~ COM0)
XXXXXXXX
XXXXXXXX
:
:
IOCC(COM 8)
X
X
:
X
:
X
IOCB (Address)
00 H
01 H
:
:
14H
15H
3AH
3BH
3CH
:
3FH
IOCB(Address)
40H
41H
54H
55H
7AH
7BH
7CH
:
7FH
Remarks
1/8 DUTY
Remarks
1/9 DUTY
Bit 7: Unused. Fixed at ‘0’.
NOTE
Write only when LCD is enabled. Read/Write when disabled.
14 of 34 07.12.2004 (V1.0)
This specification is subject to change without further notice.
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