Our versatile general purpose I/O (GPIO) expanders provide 4, 8, 16, 24
or 40 general-purpose I/O pins for the CPU via the I2C-bus to
help designers reduce board space and complexity while simplifying
software development and lowering overall system cost.
Our agile I2C GPIO includes features to eliminate external
components as pull-up resistors, open-drain outputs, output drive
control and input latches to permit faster software development and more
robust firmware performance. These GPIOs work with I2C and
SPI interfaces and with applications such as: keyboards, IO expansion,
driving LED and signal monitoring.