General-purpose input/output
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A general-purpose input/output is an uncommitted digital signal pin on an integrated circuit or electronic circuit board that can be used as an input or output, or both, and is controllable by softwar
A PIC microcontroller with 29 remappable GPIOs (Microchip Technology PIC24FJ256)
Network router with three GPIOs (Banana Pi R1)
GPIO interface for Hewlett-Packard Series 80 computers (HP 82940A)
Ethernet interface to 48 GPIOs (Sensoray 2410)
I2C
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I2C, alternatively known as I2C and IIC, is a synchronous, multi-master/multi-slave, single-ended, serial communication bus invented in 1980 by Philips Semiconductors. It is widely used for attaching
General-purpose input/output
…which interfaces 24 GPIOs to a parallel communication bus, and various GPIO expander ICs, which interface GPIOs to serial communication buses such as I²C and SMBus. An example of the latter is the Realtek ALC260 IC, which provides eight GPIOs along with its main function of audio codec. Microcontroller…
Microchip MCP23008 8-bit I2C I/O expander in DIP-18 package
STMicroelectronics M24C08-BN6: serial EEPROM with I2C bus
A 16-bit ADC board with I2C interface