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參數(shù)資料
| 型號(hào)： | HCD66712UA03BP |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Dot-Matrix Liquid Crystal Display Controller/Driver |
| 中文描述： | 點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 82/88頁(yè) |
| 文件大?。?/td> | 662K |
| 代理商： | HCD66712UA03BP |
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HD66712U
445
13.R
COM
is the resistance between the power supply pins (V
CC
, V1, V4, V5) and each common signal pin
(COM0 to COM33).
R
SEG
is the resistance between the power supply pins (V
CC
, V2, V3, V5) and each segment signal pin
(SEG1 to SEG60).
14.The following graphs show the relationship between operation frequency and current consumption.
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
100
200
300
400
500
f
OSC
or f
cp
(kHz)
I
C
V
CC
= 5V
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
100
200
300
400
500
f
OSC
or f
cp
(kHz)
I
C
V
CC
= 3V
max.
typ.
max.
(normal mode)
typ.
(normal mode)
typ.
(low power mode)
15.Applies to the OSC1 pin.
16.Each COM and SEG output voltage is within ±0.15V of the LCD voltage (V
CC
, V1, V2, V3, V4, V5)
when there is no load.
17.The TEST pin must be fixed to ground, and the IM or EXT pin must also be connected to V
CC
or
ground.
18.Booster characteristics test circuits are shown below.
GND
V
CC
1
μ
F
1
μ
F
Vci
C1
C2
V5OUT2
V5OUT3
+
(Boosting three times)
+
1
μ
F
+
GND
V
CC
1
μ
F
Vci
C1
C2
V5OUT2
V5OUT3
(Boosting twice)
+
1
μ
F
+
Rload
Rload
I
O
I
O
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