1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
S48
S47
S46
S45
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
LCDCE
LCDCLK
LCDCE
OSC
Vss
VDD2
VDD1
INH
VDD
COM3
COM2
COM1
S52
S51
S50
S49
LC75823E (IC691) : LCD Driver
1. Pin Layout & Symbol
2. Pin Function
Pin No.
1 to 52
53 to 55
56
57
58
59
60
61
62
63
64
I/O
O
O
--
I
I
I
--
I/O
I
Segment output pins used to display data transferred
by serial data input.
Common driver output pins. The frame frequency is given
by : t0=(fosc/384)Hz.
Power supply connection. Provide a voltage of between
4.5 and 6.0V.
Display turning off input pin.
INT="L" (Vss) ----- off (S1 to S52, COM1 to COM3="L"
INT="H" (VDD)----- on
Serial data can be transferred in display off mode.
Used for applying the LCD drive 2/3 bias voltage
externally.
Must be connected to VDD2 when a 1/2 bias drive scheme
is used.
Used for applying the LCD drive 1/3 bias voltage
externally.
Must be connected to VDD1 when a 1/2 bias drive scheme
is used.
Power supply connection. Connect to GND.
Oscillator connection.
An oscillator circuit is formed by connecting an external
resistor and capacitor at this pin.
Serial data CE : Chip enable
interface connection
to the controller. CLK : Sync clock
DI : Transfer data
Symbol
S1 to S52
COM1 to COM3
VDD
INH
VDD1
VDD2
Vss
OSC
LCDCE
LCDCLK
LCDDI
Function
Description of major ICs
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
“无奇不有”电路图网 http://www.xiaoyu163.com
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