參數(shù)資料
型號: 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)動器,片內(nèi)RAM
文件頁數(shù): 105/124頁
文件大小: 647K
代理商: UPD161401W
Data Sheet S15726EJ2V0DS
105
μ
PD161401
8.2
Power OFF Sequence (with Internal Power Supply)
Operation status
Control register 1
DISP = 0, HALT = 0
Power system control register 5
(HPM1, HPM0 = 1, 0)
R0
Display OFF
. Internal operation starts.
R56
Change the operation mode of the operational
amplifier to “power OFF mode”.
Main electronic volume register setting
R57
[MEV6, MEV5, MEV4, MEV3, MEV2, MEV1, MEV0]
= [0, 0, 0, 0, 0, 0, 0]
Sub-electronic volume register setting
R58
[SEV6, SEV5, SEV4, SEV3, SEV2, SEV1, SEV0]
= [0, 0, 0, 0, 0, 0, 0]
Wait time 1
Wait for at least 120 ms
Note
.
Control register 1
(DISP = 0, HALT = 1)
R0
Display OFF.
Internal operation stops.
Wait time 2
Wait for at least 380 ms before turning power OFF
Note
.
Power OFF
Note
The wait times 1, 2 vary 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 (refer to
8.5 Flow of V
OUT
and V
LCD
Voltages from Power ON to Power OFF
).
#
#
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