— 4 —
LCD DRIVER (S6A0069)
The LCD driver can drive a dot matrix LCD having 40 segment and 16 common lines. The LSI contains 240
graphic symbols in the built-in character generator ROM, and stores 80 characters in the built-in display data
RAM. In accordance with command from the CPU, the LSI I capable of displaying up to 16 characters
simultaneously. The following table shows the pin function of the LSI.
Pin. No. Terminal In/Out Function
1 ~ 22,
63 ~ 80
23
24 ~ 25
26 ~ 30
31 ~ 32
33
34
35
36
37
38
39 ~ 42
43 ~ 46
47 ~ 62
SEG1 ~ SEG40
GND
OSC1, OSC2
V1 ~ V5
CLK1, CLK2
VDD
M
D
RS
R/W
E
DB0 ~ DB3
DB4 ~ DB7
COM1 ~ COM16
Segment signal output
GND (0V) source
Terminal for the built-in clock pluse generator.
The external resistor connected determines the oscillation
frequency.
Bias voltage level for LCD driving
Not used. Connected to extension driver clock
DVDD (+5V) source
Not used. Connected to extension driver.
Not used. Connected to extension driver.
Register selection Input. RS= "High". Data register is
selected. RS="Low", Instruction register is selected.
Read/Write selection Input. When R/W=High, read opera-
tion. When R/W=Low, write operation.
Read/Write enable signal.
Not used. Conencted to GND (0V)
Data Bus.
Common signal/output. Pin 54 (COM8) and Pin 62
(COM16) are not used.
Out
---
In/Out
In
---
---
---
---
In
In
In
---
In/Out
Out
To Next Page
Loading...
