TI’s MSP430 chips are rather interesting – they’re low power, very capable, and available for under a dollar in most cases. Some of these chips, though, don’t have native SPI or I2C interfaces; ...
The 24XXX series serial EEPROMs from Microchip Technology are I2C™ compatible and have maximum clock frequencies ranging from 100 kHz to 1 MHz. The I2C module available on the dsPIC33F family ...