Strange display?

Hello I have an old inverter that failed. The display on it has some strange pinout I don’t understand. The pins on there

5v
GND
Data
WD
CS

Not sure what the WD pin is. Can someone please help me to figure out what the WD pin is?

Joseph

WatchDog timer?

Screen brightness?
No idea where the w comes from...

WD may be a clock signal if the protocol is SPI or similar.

1 Like

WD -> Write Data?

Could be a HT1621 LCD driver.

3 Likes

Hello all, thank you for the reply back. @Rintin i think is correct it might be a write data pin. After sending the commands it might need a pin command to write and display. I honestly don’t know. I never saw something like this on a display before. I’m still looking into it.

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