LCD display driver chip CH462


Overview

CH462 is an LCD display driver chip. The CH462 has a built-in clock oscillation circuit that supports a 128-point (32 x 4) LCD panel.

Features

  • Supports up to 32×4 LCD panels, 32 SEG, 4 COM
  • Can choose 1/2 or 1/3bias, 1/2 or 1/3 or 1/4 duty LCD display application
  • Provide VLCD pin for adjusting LCD operating voltage
  • Built-in bias circuit
  • Built-in clock oscillation circuit
  • 2 optional buzzer frequencies (2KHz or 4KHz)

relation files

file name file content
CH423DS1.PDF CH423 datasheet. A remote I/O expander with 2-wire serial interface, used for 16 digital tube display or I/O expansion applications through two wires. The input terminal is a two-wire interface compatible with I2C, and the output terminal is an 8-bit bidirectional input/output port and a 16-bit high-current output port.
CH453DS1.PDF CH453 datasheet. CH453 can be used for 128 LEDs or 16×8 segment digital tube drive and 64-key keyboard scanning control.
CH452DS1.PDF CH452 datasheet. CH452 can be used for 64 LEDs or 8×8 segment digital tube drive and 64-key keyboard scanning control, simplifying the workload of MCU.