JVC KS-FX230 Service Manual page 13

LC75823E(IC651):LCD driver
1.Pin layout
48 to 33
49 32
to to
64
17
1 to 16
3.Pin function
PIN
Symbol
No.
1 to 9
S10 to S52
10 to 52
COM1 to COM3
53 to 55
VDD
56
/INH
57
58
59
VSS
60
OSC
61
CE
62
CL
63
DI
64
2.Block diagram
COM1 COM2 COM3
VDD1
COMMON
DRIVER
VDD2
INH
CLOCK
OSC
GENERATOR
I/O
-
NOT USED
O
Segment outputs that display data transferred from
serial data.
O
The frame frequency (fo) for the common driver output is
(fosc/384)Hz.
-
Power supply
I
Forcibly terns off the display. regardless of internal data.
Serial data can be input. whether this pin is high or low
-
NOT USED
-
-
To GND
I
Oscillator connection (for the common segment alternating
waveform)
I
Serial data transfer
I
pins.connected to a
I
microprocessor.
S52 S51
LATCH & DRIVER
SHIFT REGISTER
ADDRESS
DETECTOR
VDD VSS
DI CL CE
Functions
CE : Chip enable
CL : Sync.clock
DI : Transfer data
KS-FX230
S1
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