Cyclone® 10 LP FPGA – AN 265: Microcontroller I/O Expander Design Example - Many microcontrollers and microprocessors limit I/O ports and pins to conserve pin counts and reduce package sizes. For many microcontrollers, such as PIC, 8051, and SX, or microprocessor-based systems, the system design requires more I/O pins without changing the microcontroller. To increase the number of I/O pins without changing the microcontroller, I/O expansion is a solution. - 2016-05-24

Version

16.0.0