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參數(shù)資料
| 型號(hào)： | LC75852E |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Asynchronous Silicon Gate 1/2 Duty LCD Driver with On-Chip Key Input Function(異步硅門帶集成鍵輸入功能的1/2占空LCD驅(qū)動(dòng)器) |
| 中文描述： | 異步硅柵二分之一職務(wù)上液晶驅(qū)動(dòng)器芯片的重要輸入功能（異步硅門帶集成鍵輸入功能的1 / 2占空液晶驅(qū)動(dòng)器） |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 340K |
| 代理商： | LC75852E |
Key Scan Operation
1. Key Scan Timing
The key scan period is 375T [s]. The key scan is performed twice to reliably determine the key on/off states, and the
LSI detects key data agreement. When the key data agrees, the LSI determines that a key has been pressed, and outputs
a key read request (by setting DO low) 800T [s] after the key scan started. If a key is pressed again without the key data
agreeing, a key scan is performed once more. Thus key on/off operations shorter than 800T [s] cannot be detected.
*
1 The high or low states of these signals in sleep mode are determined by the S0 and S1 control data bits.
2. Key Scan during Normal Mode
The pins KS1 to KS6 are set high.
A key scan starts if any key is pressed, and the scan continues until all keys have been released. Multiple key
presses can be recognized by determining if multiple key data bits have been set.
When a key has been pressed for 800T [s] (where T = 1/f
OSC
) or longer, a key data read request (DO is set to low)
is output to the controller. The controller acknowledges this request and reads the key data. However, DO will go
high when CE is high during a serial data transfer.
After the controller has finished reading the key data, the LSI clears the key data read request (by setting DO high)
and performs another key scan. Note that since DO is an open drain output, a pull-up resistor of between 1 and 10 k
is required.
No. 4828-9/16
LC75852E, 75852W
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PDF描述 |
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| LC75853NE | 1/3 Duty General-Purpose LCD Display Driver(1/3占空通用LCD顯示驅(qū)動(dòng)器) |
| LC75854E | 1/4 Duty LCD Display Driver with Key Input Function(1/4占空具有鍵輸入功能LCD顯示驅(qū)動(dòng)器) |
| LC75864E | 1/4 Duty LCD Display Drivers with Key Input Function |
| LC75873NE | 1/3 Duty General Purpose LCD Display Driver(1/3占空普通用途LCD顯示驅(qū)動(dòng)器) |
| LC75874E | 1/4-Duty General-Purpose LCD Display Driver(1/4占空通用LCD顯示驅(qū)動(dòng)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC75852E-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 |
| LC75852EHS-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 |
| LC75852W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Asynchronous Silicon Gate 1/2 Duty LCD Driver with On-Chip Key Input Function |
| LC75852W-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 |
| LC75852W-TLM-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 |
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