G121S1-L02 Datasheet, PDF (16/29 Pages) AZ Displays – 12.1” TFT-LCD module

Issued Date: Jan. 11, 2010
Model No.: G121S1-L02
Approval
6.2 POWER ON/OFF SEQUENCE
To prevent a latch-up or DC operation of LCD module, the power on/off sequence should follow the
conditions shown in the following diagram.
0.9VCC
0.1VCC
VCC
T1
T2
LVDS
VALID
90%
10%
T7
T3
0.9VCC
0.1VCC
T4
0.9Vi
0.1Vi
Vi
BL ON/OFF
PWM DIMMING
T5
T6
90%
10%
T8
T9
90%
10%
Power ON/OFF sequence
0.9Vi
0.1Vi
Note (1) Please avoid floating state of interface signal at invalid period.
Note (2) When the interface signal is invalid, be sure to pull down the power supply of LCD VCC to 0 V.
Note (3) The Backlight converter power must be turned on after the power supply for the logic and the
interface signal is valid. The Backlight converter power must be turned off before the power
supply for the logic and the interface signal is invalid.
Parameter
Value
Units
Min
Typ
Max
T1
0.5
---
10
ms
T2
0
---
50
ms
T3
0
---
50
ms
T4
500
---
---
ms
T5
200
---
---
ms
T6
200
---
---
ms
T7
5
---
300
ms
T8
10
---
---
ms
T9
10
---
---
ms
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