67.Xpander Logic The simple solution to system expansion

This new family of devices allows the system processor to access a wide range of additional features through a serial interface (I2C/SPI).
Xpander Logic
The simple solution to system expansion
Enhanced I/O expander

STMicroelectronics’ Xpander Logic family of devices is
designed to increase the number of I/O ports and enhance
the control and mixed signal capability of existing
microcontrollers/microprocessors.

This new family of devices allows the system processor to
access a wide range of additional features