M5Stack Extend Serial I/O Unit (PCA9554PW)

M5StackSKU: RB-Mst-240
Manufacturer #: U011

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Sale price $3.25

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Only 2 units left

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  • 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.

  • 1x EXT.IO Unit
  • 1x Grove Cable


  • 32 x 24 x 11 mm (L x W x H)
  • I/O Number of expansions: 8
  • I2C address: 0x27
  • Lego-compatible holes: 2
  • Interface: GROVE
  • Support: UIFlow and Arduino
  • Weight: 5 g

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