Brads Electronic Projects Forum

I2C EEPROM Shield and Platforms Roundup

The shield is composed of a Microchip 24FC1025 which is a 1024 megabit (128 kilobyte) EEPROM, and supporting circuitry of jumpers, sockets, and resistors. The jumpers provide options for the implementation to support a variety of platforms.

http://techwithdave.blogspot.com/2012/1 ... undup.html

The shield is for Arduino using a Microchip 24FC1025 EPROM.

He recommends the I²C EEPROM, saying it is much easier to use than SPI. Although I do like I²C and have used the 24-family I²C EEPROMs, I have also just completed a project with the 25VF032 4-megabyte (32 megabit) SPI flash in a tiny SO-8, and it was not difficult. You can write bytes and byte pairs instead of having to do a whole page at a time like many other SPI flash memories, and it only takes 10µs for that write. Erasing does need to be done in blocks though.

Garth - what did you interface the 25VF032 with?