參數(shù)資料
型號(hào)： LC75838E
廠(chǎng)商： Sanyo Electric Co.,Ltd.
英文描述： 1/3 Duty LCD Display Drivers with Key Input Function
中文描述： 1 / 3職務(wù)液晶顯示驅(qū)動(dòng)器與關(guān)鍵輸入功能
文件頁(yè)數(shù)： 22/24頁(yè)
文件大?。?/td> 230K
代理商： LC75838E
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. (615T(s))
t6: Key scan execution time when the key data did not agree for two key scans and the key scan was executed again.
(1230T(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. 7135-22/24
LC75863E, 75863W
Key data read
processing
YES
NO
Controller
determination
(Key on)
Controller
determination
(Key on)
Controller
determination
(Key off)
Controller
determination
(Key on)
Controller
determination
(Key off)
Key data read request
Key data read
DO
DI
CE
Key on
Key on
Key
address
Key scan
Key input
t6
t9
t9
t9
t9
t5
t8
t8
t7
t7
t5
t7
t8
t5
相關(guān)PDF資料
PDF描述
LC7583N LCD Driver with Level Meter
LC75842 General-Purpose 1/2 Duty LCD Display Driver
LC75844 1/4 Duty General-Purpose LCD Driver
LC7584 1/4 Duty General-Purpose LCD Driver
LC75842E General-Purpose 1/2 Duty LCD Display Driver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LC75838W 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:1/8 to 1/10 Duty General-Purpose LCD Display Drivers
LC75838W-E 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER - Trays
LC75838WS-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
LC75839PW 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:1/4 and 1/3-Duty General-Purpose LCD Display Driver
LC75839PW-H 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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