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參數(shù)資料
| 型號(hào)： | HD66712 |
| 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)： | 53/88頁(yè) |
| 文件大?。?/td> | 662K |
| 代理商： | HD66712 |
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HD66712U
416
Oscillator Circuit
OSC1
OSC1
OSC2
Clock
Rf
The oscillator frequency can be
adjusted by oscillator resistance
(Rf). If Rf is increased or power
supply voltage is decreased, the
oscillator frequency decreases.
The recommended oscillator
resistor is as follows.
HD66712
Rf = 91 k
±
2% (V
CC
= 5V)
Rf = 75 k
±
2% (V
CC
= 3V)
ii) HD66712U
Rf = 130 k
±
2% (V
CC
= 5V)
Rf = 110 k
±
2% (V
CC
= 3V)
1) When an external clock is used
2) When an internal oscillator is used
HD66712
i) HD66712S
Figure 22 Oscillator Circuit
1
2
3
4
32
33
1
2
3
32
33
V
CC
V1
V4
V5
COM1
1-line selection period
(2) 1 /33 duty cycle
1 frame
1 frame
1
2
3
4
16
17
1
2
3
16
17
1-line selection period
V
CC
V1
V4
V5
COM1
1 frame
1 frame
(1) 1 /17 duty cycle
Item
Line selection period
Frame frequency
Normal Display Mode (LP = 0)
5-Dot Font Width
200 clocks
Low Power Mode (LP = 1)
5-Dot Font Width
60 clocks
79.4 Hz
240 clocks
66.2 Hz
66.2 Hz
72 clocks
55.1 Hz
Item
Line selection period
Frame frequency
Normal Display Mode (LP = 0)
5-Dot Font Width
Low Power Mode (LP = 1)
5-Dot Font Width
100 clocks
81.8 Hz
120 clocks
68.2 Hz
60 clocks
68.2 Hz
72 clocks
56.8 Hz
6-Dot Font Width
6-Dot Font Width
6-Dot Font Width
6-Dot Font Width
Note: At the calculation example above for displayed frame frequency, all oscillator frequencies are
270 kHz (1 clock = 3.7
μ
s).
Note: At the calculation example above for displayed frame frequency, all oscillator frequencies are
270 kHz (1 clock = 3.7
μ
s).
Figure 23 Frame Frequency
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66712UA02TA0 | Dot-Matrix Liquid Crystal Display Controller/Driver |
| HD66712SA00FS | Dot-Matrix Liquid Crystal Display Controller/Driver |
| HD66712SA01FS | Dot-Matrix Liquid Crystal Display Controller/Driver |
| HD66712SA02FS | Dot-Matrix Liquid Crystal Display Controller/Driver |
| HD66712UA03TA0 | Dot-Matrix Liquid Crystal Display Controller/Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66712A00TA0 | 制造商:Renesas Electronics Corporation 功能描述: |
| HD66712A00TB0 | 制造商:Renesas Electronics Corporation 功能描述: |
| HD66712FS | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LCD Display Driver |
| HD66712SA00FS | 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver |
| HD66712SA01FS | 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver |
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