24 채널 디지털 IO 확장 모듈 -CH423
(Gravity: CH423 I2C 24 Digital IO Expansion Module)
개요
- 본 제품은 24 채널 디지털 IO 확장 모듈 -CH423입니다.
- CH423칩을 기반으로 디자인된 제품으로 I2C 인터페이스를 통해 24개의 디지털 IO(8 GPIO with interrupt functions and 16 GPO)를 접근할 수 있게 하여 줍니다.
- 3.3V/5V 시스템과 사용이 가능합니다.
Connect Diagram
특징
- 8 general input/output pins
- 16 general output pins
- Built-in driving circuit, up to 15mA continuous driving current
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SPECIFICATION
- Power Supply: 3.3V~5V
- Static Current: 1mA
- IO Continuous Driving Current: 15mA
- Communication: I2C
- I2C Address: 0x20-0x3F(The module occupies I2C address of 0x20-0x3F and cannot work with I2C device in this address range.)
- Operating Temperature Range: -20℃~80℃
- Size: 45*37mm/1.78*1.46"
- CH423 has a built-in current drive circuit that offers a 15mA continuous drive current, which can statically drive 24 LED tubes or dynamically drive 128 LEDs. This CH423 I2C to GPIO IO expander is suitable for projects involving LED tubes, dot matrix screens, light cubes, etc.