產品說明0
DFR原廠 Gravity: CH423 I2C 24 Digital IO Expansion Module IO 擴展模塊（DFR979）
【SHIPPING LIST】
- Gravity: CH423 I2C 24 Digital IO Expansion Module x1
- Gravity-4P I2C/UART Wire x1
This IO expansion board based on the CH423 chip extends 24 digital ports via I2C, including 8 GPIOs with interrupt functions and 16 GPOs.
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.
CH423內置電流驅動電路，提供15mA連續驅動電流，可靜態驅動24個LED燈管，也可動態驅動128個LED。這款CH423 I2C轉GPIO IO擴展器適用於涉及LED燈管、點陣屏、光立方等項目。
【FEATURES／特徵】
- 8 general input/output pins
- 16 general output pins
- Built-in driving circuit, up to 15mA continuous driving current
【APPLICATIONS／應用】
- Driving LED lights
- Driving Dot matrix screen
- Driving Light Cubes
【SPECIFICATION／規格】
- 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”
