Description
- M5Stack Extend Serial I/O Unit (PCA9554PW)
- Offers a GPIO Expander
- Comes with two Lego-compatible holes
- Provides eight expanded I/O number
- Interface: GROVE
- Support UIFlow and Arduino
The M5Stack Extend Serial I/O Unit (PCA9554PW) is a GPIO Expander. With simple I2C commands, it's possible to extend the GPIO pins for up to 8 extra GPIOs.
The EXT.IO Integrates the PCA9554PW chipset. This 8-bit I/O expander for the two-line bi-directional-bus (I2C) is designed for 2.3-V to 5.5 V VCC with Open-Drain Active-Low Interrupt Output operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface.
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