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)： 11/24頁(yè)
文件大小： 418K
代理商： LC75853NE
Sleep Mode Functions
Sleep mode is set up by setting S0 or S1 in the control data to 1. The segment outputs will all go low and the common
outputs will also go low, and the oscillator on the OSC pin will stop (it will be started by a key press). This reduces
power dissipation. This mode is cleared by sending control data with both S0 and S1 set to 0. However, note that the
S1/P1 to S4/P4 outputs can be used as general-purpose output ports according to the state of the P0 and P1 control data
bits, even in sleep mode. (See the control data description for details.)
Key Scan Operation Functions
1. Key scan timing
The key scan period is 288 T (s). To reliably determine the on/off state of the keys, the LC75853NE/NW 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) 615 T (s) after starting a key scan. If the key data does not agree and a key was pressed at that
point, it scans the keys again. Thus the LC75853NE/NW cannot detect a key press shorter than 615 T (s).
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.
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 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. Also note that DO, being an open-drain output, requires a pull-up
resistor (between 1 and 10 k
).
1
f
OSC
No. 4967-11/24
LC75853NE, 75853NW
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: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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