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CH422 Datasheet Led Nixie Tube Display Driver And I/o Extension Chip

Manufacturer: Unknown Manufacturer

Overview: CH422 Datasheet 1 LED Nixie Tube Display Driver and I/O Extension Chip CH422 Datasheet Version: 2 1. Overview CH422 chip can be used for LED nixie tube display driver or I/O extension. CH422 has a built-in clock oscillation circuit, which can dynamically drive 4-bit LED nixie tubes or 32 LEDs. For I/O extension, CH422 can provide 8 bidirectional I/O pins and 4 general-purpose output pins. CH422 exchanges data with MCU through a two-wire serial interface. SCL MCU, etc. SDA CH422 LED nixie tube driver SEG7～SEG0 DIG3～DIG0 4-bit LED nixie tube or 32 LEDs SCL MCU, etc. SDA CH422 I/O expansion IO7～IO0 OC3～OC0 8-bit input or 8-bit output 4-bit output Optional open drain 2.

Datasheet Details

Part number CH422
Manufacturer Unknown Manufacturer
File Size 221.62 KB
Description LED Nixie Tube Display Driver and I/O Extension Chip
Datasheet CH422-ETC.pdf

General Description

Positive power, continuous current not less

Key Features

  • Dynamic display scanning control, direct drive of 4-bit LED nixie tubes or 32 LEDs.
  • Built-in current driving stage, segment current driving capacity not less than 15mA, output word current not less than 100mA.
  • Built-in clock oscillator circuit, no need to provide external clock or external oscillator components, more anti-interference.
  • 8 general-purpose I/O pins, GPIOs, and 4 general-purpose output pins, GPOs, are extended remotely through a two-wire serial interface.

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CH422 Distributor