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Nexperia NCA9555 GPIO Expander Evaluation Board

Nexperia NCA9555 GPIO Expander Evaluation Board is an Arduino™ compatible shield-form-factor PCB designed for the Nexperia I2C-controlled GPIO expander family. The Nexperia NCA9555 board provides convenient test points for GND, I2C-Bus signals SCL and SDA, and an interrupt open drain output. The board can be used for the GPIO expander derivatives NCA9555, NCA9535, NCA9539, and NCA9595.

Features

  • 1.6V to 5.5V input voltage
  • I2C to parallel port expansion
  • Number of GPIOs = two ports with 8-bits
  • ±25mA current drive capability
  • I2C interface, 400kHz fast-mode
  • Open-drain active-low interrupt output
  • Configurable slave address via three selection pins (2x pins for NCA9539)
  • Low-active reset input (NCA9539)
  • Polarity inversion register (for read operation)

Overview

Nexperia NCA9555 GPIO Expander Evaluation Board

Videos

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Published: 2024-06-27 | Updated: 2025-08-20