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參數資料
| 型號： | LC75893M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 1/3 Duty LCD Display Driver with Key Input Function |
| 中文描述： | 1 / 3職務液晶顯示驅動器與關鍵輸入功能 |
| 文件頁數： | 22/23頁 |
| 文件大?。?/td> | 389K |
| 代理商： | LC75893M |
2. Interrupt based key data acquisition
Flowchart
No. 5971-22/23
LC75893M
Timing chart
Explanation
In this technique, the controller uses interrupts to determine key on/off states and read the key data. The controller
must check the DO state when CE is low. If DO is low, the controller recognizes that a key has been pressed and
executes the key data read operation. After that the next key on/off determination is performed after the time t8 has
elapsed by checking the DO state when CE is low and reading the key data. The period t8 in this technique must
t8 > t4
If a key data read operation is executed when DO is high, the read key data (KD1 to KD20) and sleep acknowledge
data (SA) will be invalid.
t3·······Key scan execution time when the key data agreed for two key scans (420T[s]).
t4·······Key scan execution time when the key data did not agree for two key scans and the key scan was executed again (840T[s]).
t5·······Key address (43H) transfer time
t6·······Key data read time
T = f1
CE = [L]
DO = [L]
CE = [L]
DO = [H]
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LC75893M-TLM-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LC75897PW | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/3, 1/4-Duty General-Purpose LCD Display Driver |
| LC75897PW-E | 功能描述:LCD 驅動器 LCD DISPLAY DRIVER RoHS:否 制造商:Maxim Integrated 數位數量:4.5 片段數量:30 最大時鐘頻率: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 |
| LC75897PWS-T-E | 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER - Trays 制造商:ON Semiconductor 功能描述:ON Semiconductor LC75897PWS-T-E Interface Misc 制造商:ON Semiconductor 功能描述:FTRAY / LCD DISPLAY DRIVER |
| LC75A | 制造商:Microsemi Corporation 功能描述:TVS SGL UNI-DIR 75V 1.5KW 2PIN DO-13 - Bulk 制造商:Microsemi Corporation 功能描述:TVS DIODE 75VWM 121VC DO202AA |
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