KS0070B 16COM / 80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
PAD DESCRIPTION
Pad No.
(Normal/Mirror)
Input/
Output
Name Description Interface
VDD (54/50)
-
Power supply
For logical circuit (+3 V, + 5 V)
Power
Supply
VSS(35, 69) 0 V (GND)
V1 ~ V5
(42~46/62~58)
Bias voltage level for LCD driving.
SEG1 ~ SEG80
(34~2, 128~82/
70~128, 2~22)
Output Segment output Segment signal output for LCD drive. LCD
COM1 ~ COM16
(66~81/38~23)
Output Common output Common signal output for LCD drive. LCD
OSC1,OSC2
(37,36/67,68)
Input
(OSC1)/
Output
(OSC2)
Oscillator
When using internal oscillator, connect
external Rf resistor.
If external clock is used, connect it to
OSC1.
External
resistor/
oscillator
(OSC1)
CLK1,CLK2
(47,48/57,56)
Output
Extension driver
Latch (CLK1)/Shift
(CLK2) clock
Each outputs extension driver latch clock
and extension driver shift clock.
Extension
driver
M (49/55) Output
Alternated signal
for LCD driver
output
Outputs the alternating signal to convert
LCD driver waveform to AC.
Extension
driver
D (50/54) Output
Display data
interface
Output extension driver data (the 41st
dot's data)
Extension
driver
RS (51/53) Input Register select
Used as register selection input.
When RS = "1", Data register is selected.
When RS = "0", Instruction register is
selected.
MPU
RW (52/52) Input Read/Write
Used as read/write selection input. When
RW = "1", read operation. When RW =
"0", write operation.
MPU
E (53/51) Input Read/Write enable Used as read. Write enable signal. MPU
DB0~DB3
(55~58/49~46)
Input
/
Output
Data bus 0~7
When 8-bit bus mode, used as low order
bidirectional data bus.
During 4-bit bus mode open these pins.
MPU
DB4~DB7
(59~62/45~42)
When 8-bit bus mode, used as high
order bidirectional data bus. In case of
4-bit bus mode, used as both high and
low order.
DB7 used for Busy Flag output.
MPU
TEST (63/41) Input Test Pin This pin must be fixed to VDD or open. –