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| 型號(hào)： | UPD161401 |
| 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(yè)數(shù)： | 103/124頁(yè) |
| 文件大小： | 647K |
| 代理商： | UPD161401 |
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Data Sheet S15726EJ2V0DS
103
μ
PD161401
8.1 Power ON Sequence (with Internal Power Supply, Power ON
→
Display ON)
Power ON when /DISP pin = L
↓
Power supply is stabilized.
↓
/DISP pin = H
↓
Reset command
Wait for 50
μ
s or more.
Initialization of registers
R3
↓
Control register 1
DISP = 0, HALT = 1
↓
IC function setting by command input 1
Control register 1
(DISP = 0, HALT = 1)
Control register 2
↓
IC function setting by command input 2
Power system control register 1
(OP3, OP2, OP1, OP0 = 1, 1, 1, 1)
Power system control registers 2, 3, and 4
Power system control register 5
(HPM1, HPM0 = 0, 1)
Main electronic volume register
Sub-electronic volume register
↓
User setting by command input
Setting of functions such as grayscale data
↓
Initialization complete
↓
Control register 1
(DIPS = 0, HALT =
0
)
↓
LCD display screen setting
Display start line set
Writing of screen data
+ Wait time
↓
Power system control register 5
(HPM1, HPM0 = 0, 0)
(LCS1, LCS0 = 1,1)
(LCC1, LCC0 = 1,1)
(PSM = 1)
↓
<A>
in the next page
R0
Display OFF. Internal operation stops.
Specify power ON mode 1 (master IC only).
R0
Display OFF.
Internal operation starts.
Wait time 1
Wait for 120 to 150 ms or more from when the internal
operation starts until the LCD turns ON
Note
.
Change the operation mode of the operation amplifier to
“normal mode” (master IC only).
Segment output driving capability setting: x8
Common output driving capability setting: x16
Voltage follower bias current: x2
Note
The wait times1, 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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