UPD16431A Overview
These pins serve as LCD segment output pins and key source output pins for key scanning. LCD segment output pins These pins can be used as LCD segment output or LED output pins depending on the setting of the LCD/LED pin.
UPD16431A Key Features
- Key scan circuit (key source outputs are shared with LCD driver outputs)
- Independent LCD driver power supply VLCD (can be set to VDD to 6.5 V)
- Serial data input/output (SCK, STB, DATA)
- On-chip oscillator incorporated
- Power-ON reset circuit