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參數(shù)資料
| 型號(hào)： | LC75884E |
| 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 |
| 文件頁數(shù)： | 14/27頁 |
| 文件大?。?/td> | 611K |
| 代理商： | LC75884E |
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2. In normal mode
The pins KS1 to KS6 are set high.
When a key is pressed a key scan is started and the keys are scanned until all keys are released. Multiple key
presses are recognized by determining whether multiple key data bits are set.
If a key is pressed for longer than 800T(s) (Where T= fosc
low level on DO) to the controller. The controller acknowledges this request and reads the key data. However, if
CE is high during a serial data transfer, DO will be set high.
After the controller reads the key data, the key data read request is cleared (DO is set high) and the LC75884E/W
performs another key scan. Also note that DO, being an open-drain output, requires a pull-up resistor (between 1
and 10 k
).
No. 6086-14/27
LC75884E, LC75884W
Note:
*
3.In sleep mode the high/low state of these pins is determined by the S0 and S1 bits in the control data. Key scan output signals are not output from
pins that are set low.
Key Scan Operation Functions
1. Key scan timing
The key scan period is 384T(s). To reliably determine the on/off state of the keys, the LC75884E/W scans the keys
twice and determines that a key has been pressed when the key data agrees. It outputs a key data read request (a low
level on DO) 800T(s) after starting a key scan. If the key data dose not agree and a key was pressed at that point, it
scans the keys again. Thus the LC75884E/W cannot detect a key press shorter than 800T(s).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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: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 |
| LC75884WHS-TLM-E | 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER - Tape and Reel 制造商:ON Semiconductor 功能描述:REEL / LCD DISPLAY DRIVER |
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