HD66130T 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics

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HD66130T

320-channel Low-voltage Segment Driver for Dot-Matrix STN Liquid Crystal Display

Hitachi -> Renesas Electronics 

HD66130T

4.1 Turning on the power

1) Turn on the power in the order of GND- VCC, GND-V0, and VM/V1. Then, ground the DISP pin.

2) The LCD forcibly outputs the VM level by the DISPOFF function.

3) Even if an input signal is disturbed immediately after VCC is applied, the DISPOFF function has priority.

4) Input the specific signal to initialize registers in the driver. The initialization period must be at least one

frame.

5) The preparation of normal display is completed. Input the VCC level to the DISP pin to cancel the

DISPOFF function. At this time, the level of pins V0, VM, and V1 must rise to the specific potential.

4.2 Turning off the power

The procedure is basically the reverse for turning on the power.

1) Ground the DISP pin.

2) Turn off the liquid crystal power in the order of VM/V1 and GND-V0.

3) Ground VCC and an input signal.

At this time, the level of pins V0, VM, and V1 must fall to 0 V. Since the DISPOFF function stops when

VCC falls to 0 V, the LCD may output a level other than VM. Therefore, a display failure may occur when

the power is turned off or on.

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