EM73PA88A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
The display data from the display data area are automatically read out and send to the LCD driver directly by
the hardware. Therefore, the display patterns can be changed only by overwritting the contents of the display
data area through software.
The dispaly memory area that is not used to store the LCD display data could be used as the ordinary data
memory.
LCD display data area :
Bank1
P9.3=1
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
100-10Fh
110-11Fh
120-12Fh
130-13Fh
140-14Fh
150-15Fh
160-16Fh
170-17Fh
180-18Fh
190-19Fh
1A0-1AFh
1B0-1BFh
1C0-1CFh
1D0-1DFh
1E0-1EFh
1F0-1FFh
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
COM10
COM11
COM12
COM13
COM14
COM15
P26 is the start address register of LCD common pin.
Port26 Initial value: 0000
3
2
1
0
CSA
Common start address register
RAM
CSA
100-
110-
119h
120-
129h
130- 140-
139h 149h
150-
159h
160-
169h
170-
179h
180-
189h
190-
199h
1A0- 1B0-
1C0-
1D0- 1E0-
1F0-
109h
1A9h 1B9h 1C9h 1D9h 1EF9h 1F9h
COM10 COM11 COM12 COM13 COM14 COM15
COM0
COM1
COM2
COM3
COM2
COM1
COM4
COM3
COM2
COM1
COM5
COM4
COM3
COM2
COM1
COM6
COM5
COM4
COM3
COM2
COM1
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
COM15 COM0
COM1
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM10 COM11 COM12 COM13 COM14
COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM10 COM11 COM12 COM13
COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM10 COM11 COM12
COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM10 COM11
COM9 COM10
COM8 COM9
COM7 COM8
COM6 COM7
COM5 COM6
COM4 COM5
COM3 COM4
COM2 COM3
COM1 COM2
COM11 COM12 COM13 COM14 COM15 COM0
COM10 COM11 COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM10 COM11 COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM10 COM11 COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM10 COM11 COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM5
COM4
COM10 COM11 COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM5
COM10 COM11 COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM6
COM10 COM11 COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM7
COM10 COM11 COM12 COM13 COM14 COM15 COM0
COM9
COM8
COM10 COM11 COM12 COM13 COM14 COM15 COM0 COM1
COM9 COM10 COM11 COM12 COM13 COM14 COM15 COM0
PROGRAM EXAMPLE:
LDIA
OUTA P26
LDIA #1100B ; LCD display enable
OUTA P27
#0000B
LDIA
SEP
STA
#1010B ; store 1010B to RAM[101h]
P9,3
01H
* This specification are subject to be changed without notice.
10.8.2001
24
ELAN [ ELAN MICROELECTRONICS CORP ]
