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November 23, 2020
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GPIO Expander Selection: MCP23017 vs TCA9555 vs PCA9685 for Different Use Cases
MCP23017 gives you 16 I/O lines over I2C. TCA9555 adds interrupt-on-change. PCA9685 is a PWM controller, not a GPIO expander — but it gets recommended as one. A clarification.
MCP23017 gives you 16 I/O lines over I2C. TCA9555 adds interrupt-on-change. PCA9685 is a PWM controller, not a GPIO expander — but it gets recommended as one. A clarification.
Overview
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Tags
- gpio
- i2c
- mcp23017
- embedded
- expander
M
Manish Bookreader
Electronics enthusiast, Embedded Systems Expert, Linux/Networking programmer, and Software Engineer passionate about AI, electronics, books, and cooking.
