G121X1-L02 Datasheet, PDF (15/25 Pages) AZ Displays – TFT LCD Preliminary Specification

Issued Date: July. 2, 2008
Model No.: G121X1-L02
Preliminary
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.
Power Supply
VCC
0V
0.5ms≤T1≤10ms
0≤T2≤50ms
0≤T3≤50ms
500ms≤T4
Signals
0V
0.9 VCC
0.1VCC
T1
T2
Power On
VALID
0.9 VCC
0.1VDD
T3
T4
Power Off
Backlight (Recommended)
200ms≤T5
200ms≤T6
50% 50%
T5
T6
Power ON/OFF Sequence
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 inverter power must be turned on after the power supply for the logic and the
interface signal is valid. The Backlight inverter power must be turned off before the power supply
for the logic and the interface signal is invalid.
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