MAKERFACTORY MAKERFACTORYM5 Stack I/O expansion

This M5 Stack I/O expansion is a classic GPIO expander. With simple I2C commands, you can use up to 8 GPIOs. Integrated PCA9554 PW. This 8-bit I/O Expander for the bidirectional I2C-Bus is designed for the operation of 2.3 V to 5.5 V and is equipped with an open drain output with active low-level level. Via the I2C interface it offers most of the microcontroller families a universal remote I/O expansion. The IIC address: 0 x 27. It is difficult to anticipate the needs of your project right from the start. This I/O expansion, therefore, is the perfect solution to the number of I/O interfaces to increase and thus to add new functions, logic, timing and sensors. This text is machine translated.