The Pmod IOXP is an I/O expansion module based on the Analog Devices ADP5589 device. It provides up to 19 additional GPIO pins from a serial I²C bus connection, as well as a keypad matrix decoder.

• 19 x configurable GPIO pins
• Keypad decoder for up to 11 x 8 keypad with key press/release interrupt
• 16-element FIFO for event recording
• PWM generator
• Open-drain interrupt output
• 2 x Programmable logic blocks each with up to three inputs and one output
• Switch debounce filters on input pins
• Host communication: serial I²C bus up to 1MHz clock
• 16 x TVS-protected GPIO/Keypad signals on 2 x 12-pin connectors
• 3 x TVS-protected GPIO/Keypad signals on 6-pin header
• Dimensions: 33 x 58.4mm