AVR32136: 32-bit AVR UC3 NAND flash GPIO driver
This application note describes how to connect a NAND flash device to an 32-bit AVR UC3 family device and communicate using only GPIO lines. How to configure the driver to match the target hardware is also covered by this application note. AVR-UC3-Software Framework-1.7 source code can be found at https://www.microchip.com/mplab/avr-support/avr-and-sam-downloads-archive. The name of the source code in this link is asf-standalone-archive-1.7.0 which is same as AVR-UC3-SoftwareFramework-1.7.