參數(shù)資料
型號: UPD16675AN-051
廠商: NEC Corp.
英文描述: 1/34, 1/36 DUTY LCD CONTROLLER/DRIVER
中文描述: 1 / 34,1 / 36稅LCD控制器/驅(qū)動
文件頁數(shù): 8/36頁
文件大?。?/td> 252K
代理商: UPD16675AN-051
8
μ
PD16675A
1.3
Driver System
Pin Symbol
Pin Name
Pin No.
I/O
Description
SEG
1
to
SEG
128
Segment
143 to 16
O
Segment output pins
COM
1
to
COM
32
Commons
3
152 to 156,
163 to 173,
232 to 241
to
8,
O
Common output pins
PCOM
1
,
PCOM
2
Pictographic
commons
151, 231
O
Common output pins for pictograph
Amp
IN
(
+
),
Amp
IN
(
)
Operational amplifier
input
183, 182
I
These are the input pins of the operational amplifier
for LCD drive voltage adjustment. Leave Amp
IN
(+)
open when using the internal D/A converter. When
not using the D/A converter, it is necessary to input
the reference voltage.
Connect Amp
IN
(–) to the LCD voltage adjustment
resistor (see the diagram below).
Amp
OUT
Operational amplifier
output
184
O
This is the input pin of the operational amplifier for
LCD drive voltage adjustment. It is normal to
connect this pin to the LCD voltage adjustment
resistor (see the diagram below).
It is recommended to connect approx. 0.1 to 1
μ
F
capacitor to this pin to stabilize the internal
amplifier’s output.
2.
VOLTAGE CONTROL CIRCUIT EXAMPLE
D/A
Converter
DA
CHA
Amp
IN
( )
Amp
IN
( )
Amp
OUT
V
LC1
V
LC2
V
LC3
V
LC4
V
LC5
V
EE
VEXT
R
2
R
1
C
1
Reference Power Circuit
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