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參數(shù)資料
| 型號： | BU9718KV |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Picture cell driver for STN LCD driver for low voltage power supplies |
| 中文描述： | 圖片的STN液晶顯示器低壓電源驅(qū)動單元驅(qū)動程序 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 157K |
| 代理商： | BU9718KV |
3
Standard ICs
BU9718KV
Pin descriptions
Pin No.
1—11
13—23
26—35
Pin name
S
23
—S
32
S
12
—S
22
S
1
—S
11
Segment data output pin; outputs LCD drive voltage that
matches COM
1
- COM
3
compatible data
I / O
O
Function
Processing when not in use
44
OSC
—
Oscillation pin (for common, segment alternation waves)
V
SS
45
CS
I
Chip segment input; when CS = H, data can be transferred
V
SS
46
CK
I
Synchronous clock input for serial data transfer
V
SS
47
DI
I
Serial data input
V
SS
OPEN
36
37
38
COM
3
COM
2
COM
1
Common drive output; frame freq. f
C
= (f
OSC
/ 384) Hz
O
V
SS
39
I
V
DD
RES
Reset input; when RES = L, resets internal data
(include. control data)
41
—
OPEN
V
DD1
Internal standard voltage for liquid-crystal drive; when using
1 / 2 bias mode, connects to V
DD2
Internal standard voltage for liquid-crystal drive; when using
1 / 2 bias mode, connects to V
DD1
42
—
OPEN
V
DD2
Electrical characteristics (unless otherwise noted, Ta = 25°C, V
DD
= 2.7V to 3.5V, V
SS
= 0V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Pin
Input high level voltage
V
IH
0.8 V
DD
—
V
DD
V
—
CS, CK, DI, RES
CS, CK, DI, RES
CS, CK, DI, RES
CS, CK, DI, RES
Input low level voltage
V
IL
0
—
0.2 V
DD
V
—
Input high level current
I
IH
0
—
6.0
μ
A
V
I
= V
DD
Input low level current
I
IL
0
—
6.0
μ
A
V
I
= V
SS
Output high level voltage
V
SOH
—
V
DD
– 1.0
—
V
I
O
= – 20
μ
A
S
1
~ S
32
V
COH
—
V
DD
– 1.0
—
V
I
O
= – 100
μ
A
COM
1
~ COM
3
Output low level voltage
Output medium level voltage
V
SOL
—
1.0
—
V
I
O
= 20
μ
A
S
1
~ S
32
V
COL
—
1.0
—
V
I
O
= 100
μ
A
COM
1
~ COM
3
Power supply current
I
Q
—
0.1
30
μ
A
Low-power mode
—
I
DD
—
100
300
μ
A
f
OSC
= 38kHz
—
V
CM1
—
1 / 2 V
DD
±
1.0
2 / 3 V
DD
±
1.0
2 / 3 V
DD
±
1.0
1 / 3 V
DD
±
1.0
1 / 3 V
DD
±
1.0
—
V
1 / 2bias
COM
1
~ COM
3
V
SM1
—
—
V
1 / 3bias
S
1
~ S
32
V
CM2
—
—
V
1 / 3bias
COM
1
~ COM
3
V
SM2
—
—
V
1 / 3bias
S
1
~ S
32
V
CM3
—
—
V
1 / 3bias
COM
1
~ COM
3
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