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Product Parameter

Working voltage: 3.3V-5V

Communication interface: I2C interface

Interface type: Pin set

Interrupt output: connected to MCU interrupt pin, low level is valid

Product Descriptions

This module is an I/O expansion module based on the I2C interface, which supports cascading and can expand up to 8 I/Os and use 8 modules simultaneously. The module address can be set through a dip switch, and all 3 dip switches can be turned to "ON". The default module address is 0x27, and most MCUs can achieve remote I/O expansion using the I2C interface.

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Standard packaging

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