Abov MC97F60128, User Manual, Page: 305 / 382

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MC97F60128 ABOV Semiconductor Co., Ltd.
11.16.2 LCD Display RAM Organization
Display data are stored to the display data area in the external data memory.
The display data which stored to the display external data area (address 0000H-003FH) are read automatically and
sent to the LCD driver by the hardware. The LCD driver generates the segment signals and common signals in
accordance with the display data and drive method. Therefore, display patterns can be changed by only overwriting
the contents of the display external data area with a program.
Figure 11-89 shows the correspondence between the display external data area and the COM/SEG pins. The LCD is
turned on lights when the display data is
“1” and turned off when “0”.
SEG63 003FH
SEG62 003EH
SEG61 003DH
SEG60 003CH
SEG59 003BH
SEG58
SEG57
SEG56 0038H
SEG7 0007H
SEG6 0006H
SEG5 0005H
SEG4 0004H
SEG3 0003H
SEG2 0002H
SEG1 0001H
SEG0 0000H
bit0 bit1 bit2 bit3
C
O
M
0
bit4 bit5 bit6 bit7
0039H
003AH
C
O
M
1
C
O
M
2
C
O
M
3
C
O
M
4
C
O
M
5
C
O
M
6
C
O
M
7
Figure 11.89 LCD RAM Organization