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參數(shù)資料
| 型號(hào)： | LC75808E |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 1/8 to 1/10 Duty LCD Display Drivers with Key Input Function |
| 中文描述： | 1月8日至1月10日當(dāng)值液晶顯示驅(qū)動(dòng)器與關(guān)鍵輸入功能 |
| 文件頁(yè)數(shù)： | 37/39頁(yè) |
| 文件大?。?/td> | 981K |
| 代理商： | LC75808E |
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No. 6370 -37/39
LC75808E, 75808W
Notes on the Controller Key Data Read Techniques
1. Timer based key data acquisition
Flowchart
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
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
CE = [ L ]
DO = [ L ]
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC75811E | 1/8 to 1/10 Duty Dot Matrix LCD Display Controller/Driver |
| LC75814V | 1/4 Duty General-Purpose LCD Driver |
| LC75816E | 1/8 to 1/10 Duty Dot Matrix LCD Display Controllers/Drivers with Key Input Function |
| LC75817 | 1/8 to 1/10 Duty Dot Matrix LCD Display Controller/Driver with Key Input Function |
| LC75817NE | 1/8 to 1/10 Duty Dot Matrix LCD Display Controllers/Drivers with Key Input Function |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC75808W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/8 to 1/10 Duty LCD Display Drivers with Key Input Function |
| LC75808W-E | 功能描述:LCD 驅(qū)動(dòng)器 LCD DISPLAY DRIVER 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 |
| LC75808WS-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 |
| LC75808W-SH-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 |
| LC75809PT-H | 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER - Trays |
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