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參數(shù)資料
| 型號(hào)： | BU9729K |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Segment-type LCD driver |
| 中文描述： | 段型LCD驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大?。?/td> | 146K |
| 代理商： | BU9729K |
3
Standard ICs
BU9729K
Pin descriptions
Pin name
I / O
Function
OSC1
OSC2
V
SS
V
C
V
LCD
V
DD
SCK
SD
CS
C / D
COM1
~
COM4
SEG1
~
SEG18
I
O
—
—
—
I
I
I
I
O
O
Pin No.
1
2
3
4
5
6
7
8
9
10
11 ~ 14
15 ~ 32
These are the I / O pins for the internal oscillator.
Resistance should be connected between the pins when the internal clock is operating.
When an external clock is operating, input should be done from OSC1, and OSC2 should be left open.
This is the V
SS
pin.
This is the power supply pin for LCD drive.
The condition V
LCD
^
V
C
^
V
SS
must be satisfied.
This is the V
DD
pin.
This is the shift lock input pin for serial data.
The contents of the SD pin are read one bit at a time at the rising edge of this pin.
This is the serial data input pin.
Display data and commands are input here.
When this is
“
0
”
, display data is not displayed, and when
“
1
”
, the data is displayed.
This is the chip select signal input pin.
When this is LOW, SD input can be received.
The SCK counter is incremented at the timing at which CS goes from HIGH to LOW.
This is the signal input which recognizes whether the SD input consists of commands or display data.
When the SCK of the eighth clock rises, this pin judges the input to be display data if the
le
vel is LOW, and a command if the level is HIGH.
These are the common output pins for LCD drive.
They are connected to the commons of the LCD panel.
These are the segment output pins for LCD drive.
They are connected to the segments of the LCD panel.
Absolute maximum ratings (Ta = 25°C, V
SS
= 0V)
Parameter
Symbol
Limits
Unit
Power supply voltage 1
Power supply voltage 2
Operating temperature
Storage temperature
Input voltage
Output voltage
1 The condition V
LCD
^
V
C
^
V
SS
must be satisfied.
2 Reduced by – 4.0mW for each increase in Ta of 1
°
C over 25
°
C.
V
DD
V
LCD
Pd
T
opr
Tstg
V
IN
V
OUT
– 0.3 ~ + 7.0
– 0.3 ~ + 7.0
1
400
2
– 20 ~ + 75
– 55 ~ + 125
– 0.3 ~ V
DD
+ 0.3
– 0.3 ~ V
DD
+ 0.3
V
V
mW
°
C
°
C
V
V
Power dissipation
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