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HT12X21 Fiches technique(PDF) 15 Page - List of Unclassifed Manufacturers

No de pièce HT12X21
Description  TFT-LCD PRODUCT
PDF  22 Pages
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Fabricant  ETC [List of Unclassifed Manufacturers]
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HT12X21 Fiches technique(HTML) 15 Page - List of Unclassifed Manufacturers

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PRODUCT GROUP
REV.
ISSUE DATE
TFT-LCD PRODUCT
A
2003.07.22
PAGE
SPEC. NUMBER
S864-1148
SPEC. TITLE
HT12X21-100 Product Specification
15
OF
22
B3-002-O (3/3)
A4 (210 X 297)
9.0 POWER SEQUENCE
To prevent a latch-up or DC operation of the LCD module, the power on/off sequence should be
as shown in below
l 0 < T1
≤ 10 ms
l 0 < T2
≤ 50 ms
l 100 ms
≤ T3, T4
l 0 < T5
≤ 50 ms
l 1 sec < T6
Notes:
1. When the power supply VDD is 0V, Keep the level of input signals on the low or keep high
impedance.
2. Do not keep the interface signal high impedance when power is on.
3. Back Light must be turn on after power for logic and interface signal are valid.
T1
Power Supply
Interface Signal
Back- light
Valid
T2
T5
T3
T4
0.9VDD
0.1VDD
0.9VDD
0.1VDD
0V
0
0
T6



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