參數(shù)資料
型號(hào): UPD161401W
廠商: NEC Corp.
英文描述: 256-COLOR, 1/80-DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM
中文描述: 256色,1/80-DUTY LCD控制器/驅(qū)動(dòng)器,片內(nèi)RAM
文件頁數(shù): 110/124頁
文件大?。?/td> 647K
代理商: UPD161401W
Data Sheet S15726EJ2V0DS
110
μ
PD161401
9. USING RAM TEST MODE
The
μ
PD161401 has a test mode in which seven types of screen data are written to the display RAM. When using this
test mode, be sure to execute the following sequence. If the RAM test mode is executed in any other sequence,
erroneous data may be displayed.
Operating status
Control register 1
DISP = 0, STBY = 1
RAM test mode setting
Control register 1
DISP = 0, STBY =
0
R0
Display OFF.
Standby setting
R61
Select data to be written to RAM.
R0
Display OFF.
Standby cleared
Wait time
Wait for 200 ms or more from when the internal operation
starts until the LCD turns OFF
Note
.
Control register 1
DISP =
1
Setting complete
R0
Display ON.
Note
The time of 200 ms varies depending on the characteristics of the LCD panel and the capacitance of the
boosting or smoothing capacitor. It is recommended to determine this value after thorough evaluation with
the actual system.
Remark
The set display data is always written to the display RAM in the RAM test mode.
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