參數(shù)資料
型號： LC75804W
廠商： Sanyo Electric Co.,Ltd.
英文描述： 1/3, 1/4 Duty LCD Display Drivers with Key Input Function
中文描述： 1 / 3，1 / 4占空比LCD顯示驅(qū)動器，主要輸入功能
文件頁數(shù)： 18/37頁
文件大?。?/td> 297K
代理商： LC75804W
No. 6266-18/37
LC75804E, LC75804W
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 615T(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 LC75804E/W
performs another key scan. However, this dose 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)
Multiple Key Presses
Although the LC75804E/W is capable of key scanning without inserting diodes for dual key presses, triple key presses on
the KI1 to KI5 input pin lines, or multiple key presses on the KS1 to KS6 output pin lines, multiple presses other than
these cases may result in keys that were not pressed recognized as having been pressed. Therefore, a diode must be
inserted in series with each key. Applications that do not recognize multiple key presses of three or more keys should
check the key data for three or more 1 bits and ignore such data.
KI1
KI2
KI3
KI4
KI5
*
4
[L] KS1
[L] KS2
[L] KS3
[L] KS4
[L] KS5
[H] KS6
DO
DI
CE
615T[s]
615T[s]
T=
1
fosc
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.
When any one of these keys is pressed,
the oscillator on the OSC pin is started
and the keys are scanned.
Key input
(KS6 line)
Key scan
Key data read request
Key data read
Serial data transfer
Key address (43H)
Key address
Key data read request
Key data read
Serial data transfer
Serial data transfer
相關(guān)PDF資料
PDF描述
LC75808 1/8 to 1/10 Duty LCD Display Drivers with Key Input Function
LC75808W 1/8 to 1/10 Duty LCD Display Drivers with Key Input Function
LC75808E 1/8 to 1/10 Duty LCD Display Drivers with Key Input Function
LC75811E 1/8 to 1/10 Duty Dot Matrix LCD Display Controller/Driver
LC75814V 1/4 Duty General-Purpose LCD Driver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LC75804W-E 功能描述:LCD 驅(qū)動器 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
LC75804WS-E 功能描述:LCD 驅(qū)動器 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
LC75805PEH-3H 制造商:ON Semiconductor 功能描述:LED AND LCD DISPLAY DRIVE - Trays 制造商:ON Semiconductor 功能描述:FTRAY / LED AND LCD DISPLAY DRIVE
LC75805PES-3H 制造商:ON Semiconductor 功能描述:LED AND LCD DISPLAY DRIVE - Trays
LC75806PT-H 功能描述:LCD 驅(qū)動器 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*