HT1608L 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT1608L

2×20 Channel LCD Driver

Holtek Semiconductor 

HT1608L

Channel 1 used as a segment driver and channel 2 as a common driver (MODE=H)

When channel 2 is used as a common driver, MODE is connected to VDD. Channel 2 will shift data

on the rising edge of CLK1 and shift latch data on the rising edge of CLK2.

Static driver

When the HT1608L is used as a static driver, data is transferred on the falling edge of CLK2 and

latched on the falling edge of CLK1. The frequency of CLK1 becomes the frame frequency of the LCD

driver. The frequency of ALT has to be twice the frequency of CLK1. ALT has to be synchronized on

the falling edge of CLK1.

The power supply for the LCD driver is used by shortening V1, V4 and V6 or V2, V3 and V5. One of

the LCD output terminals can be used as a common output. The application circuit connections are

shown below:

9

27th Aug ’98

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