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參數(shù)資料
| 型號(hào)： | LC75884 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 1/4 Duty LCD Display Drivers with Key Input Function |
| 中文描述： | 1 / 4占空比LCD顯示驅(qū)動(dòng)器，主要輸入功能 |
| 文件頁(yè)數(shù)： | 25/27頁(yè) |
| 文件大?。?/td> | 611K |
| 代理商： | LC75884 |
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Notes on the controller key data read techniques
1. Timer based key data acquisition
(1) Flowchart
(2) Timing chart
t5: Key scan execution time when the key data agreed for two key scans. (800T(s))
t6: Key scan execution time when the key data did not agree for two key scans and the key scan was executed again.
(1600T(s))
t7: Key address (43H) transfer time
t8: Key data read time
fosc
(3) Explanation
In this technique, the controller uses a timer to determine key on/off states and read the key data. The controller must
check the DO state when CE is low every t9 period without fail. If DO is low, the controller recognizes that a key has
been pressed and executes the key data read operation.
The period t9 in this technique must satisfy the following condition.
t9>t6+t7+t8
If a key data read operation is executed when DO is high, the read key data (KD1 to KD30) and sleep acknowledge
data (SA) will be invalid.
T = —1
No. 6086-25/27
LC75884E, LC75884W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC75884E | 1/4 Duty LCD Display Drivers with Key Input Function |
| LC75884W | 1/4 Duty LCD Display Drivers with Key Input Function |
| LC75893M | 1/3 Duty LCD Display Driver with Key Input Function |
| LC7730M | Stable Long-running Timer(穩(wěn)定的運(yùn)行時(shí)間長(zhǎng)的定時(shí)器) |
| LC78010E | Video CD and CD-G Digital RGB Encoder LSI |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC75884E | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:1/4 Duty LCD Display Drivers with Key Input Function |
| LC75884E-E | 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER - Trays |
| LC75884W | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:1/4 Duty LCD Display Drivers with Key Input Function |
| LC75884W-E | 功能描述:LCD 驅(qū)動(dòng)器 RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| LC75884WHS-E | 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER - Trays 制造商:ON Semiconductor 功能描述:FTRAY / LCD DISPLAY DRIVER |
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