2.4.Power Supply ON/OFF Sequence
2.4.1.ON Sequence
SIGNAL
LEVEL
VDD
VDD
GND
VDD
GND
VDD
GND
VEE
0≦t
SIGNAL
0≦t
(Without RESET Signal)
VEE
2.4.2.OFF Sequence
LEVEL
VDD
SIGNAL
GND
VDD
GND
VDD
GND
VEE
VDD
0≦t
SIGNAL
0≦t
(Without RESET Signal)
VEE
2.4.3.Reset Sequence
SIGNAL
LEVEL
H Level
RESET
L Level
T>250μs
T≧0
T≧10 ms
VDD
GND
VDD
VEE
VDD
VEE
T≧50ms
T≧0
T≧50ms
T≧0
Power On
Reset
Reset Cancellation
Power Off
Please maintain the above sequence when turning on and off the power supply of the module.
If VEE is supplied to the module while internal alternate signal for LCD driving (M) is unstable or
RESET is active, DC component will be supplied to the LCD panel. This may cause damage to
the LCD module.
DMF-50773NB-FW (AG) No.99-0083
OPTREX CORPORATION
Page 5/17
OPTREX
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