參數(shù)資料
型號(hào)： LC75853NE
廠商： Sanyo Electric Co.,Ltd.
英文描述： 1/3 Duty General-Purpose LCD Display Driver(1/3占空通用LCD顯示驅(qū)動(dòng)器)
中文描述： 1 / 3職務(wù)通用液晶顯示驅(qū)動(dòng)程序（1 / 3占空通用液晶顯示驅(qū)動(dòng)器）
文件頁(yè)數(shù)： 12/24頁(yè)
文件大?。?/td> 418K
代理商： LC75853NE
3. In sleep mode
The pins KS1 to KS6 are set to high or low by the S0 and S1 bits in the control data. (See the control data
description for details.)
If a key on one of the lines corresponding to a KS1 to KS6 pin which is set high is pressed, the oscillator on the
OSC pin is started and a key scan is performed. 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 615 T (s) (where T =
) the LC75853NE/NW outputs a key data read
request (a 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
LC75853NE/NW performs another key scan. However, this does not clear sleep mode. Also note that DO, being
an open-drain output, requires a pull-up resistor (between 1 and 10 k
).
Sleep mode key scan example
Example: S0 = 0, S1 = 1 (sleep with only KS6 high)
Note:
*
4. These diodes are required to reliable recognize multiple key presses on the KS6 line when sleep mode state with only KS6 high, as in the
above example. That is, these diodes prevent incorrect operations due to sneak currents in the KS6 key scan output signal when keys on
the KS1 to KS5 lines are pressed at the same time.
1
f
OSC
No. 4967-12/24
LC75853NE, 75853NW
Key input 1
Key input 2
Key input 3
Key data read request
Key data read request
Key data read
Key data read
Key data read
Key data read request
When any one of these keys is pressed,
the oscillator on the OSC pin is started
and the keys are scanned.
Serial data transfer Serial data transfer
Serial data transfer
Key address (43H)
Key address
Key address
相關(guān)PDF資料
PDF描述
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)
LC75878W 1/8 to 1/10 Duty General-Purpose LCD Display Drivers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LC75853NE-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
LC75853NEHS-E 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER - Trays
LC75853NW 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:1/3 Duty LCD Display Drivers with Key Input Function
LC75853NW-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
LC75853NWHS-E 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER - Trays
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