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 ...

We’ve gotten used to the GPIO-available functions of Raspberry Pi ... the Raspberry Pi 4 has six SPI controllers, six I2C controllers, and six UARTs – all on its 40-pin header.

The GPIO cell set can be configured as input ... Digital cells for 25MHz, 75MHz, and 150MHz allow optimization across SSO currents & power. A 3.3V I2C open-drain (fail-safe) and a 3.3V analog cell ...

This flip-chip compatible library in Dongbu HiTek 130nm features a fail-safe GPIO, two standard GPIOs, a 5V GPI, and 5V I2C-compliant ODIO. The GFGPIO is a highly configurable 5V tolerant, ...