¡ Semiconductor
MSM5238
NOTES ON USE
Note the following when turning power on and off:
The LCD drivers of this IC require a high voltage. For this reason, if a high voltage is applied to
the LCD drivers with the logic power supply floating, excess current flows. This may damage
the IC. Be sure to carry out the following power-on and power-off sequences:
When turning power on:
First V ON, next V (V ), V , V , V ON. Or both ON at the same time.
DD
EE
4
3
2
1
When turning power off:
First V (V ), V , V , V OFF, next V OFF. Or both OFF at the same time.
EE
4
3
2
1
DD
9/12
OKI [ OKI ELECTRONIC COMPONETS ]
