The MCP23017, a 16-bit I2C GPIO expander, has always been a tasty chip. With 16 GPIOs addressable over I2C, proper push/pull outputs, software-enabled pull-ups, eight addresses, maskable ...
The PCF8574 is an I2C GPIO expander that does simple transfers ... aren’t inherently limited to a single byte! PCF8575, the 16-bit sister of the PCF8574, has 16 GPIOs, I’ve used simple ...
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