ATMEGA ATTiny85-20PUThe ATTiny85 is a great little microcontroller and Oddwires has it at agreat price! With 8K of program storage you can do more than you might imagine with it. It is a very low cost solution for space saving designs. At first glance you may think it has too few I/O pins (5 available). However it does support both I2C and SPI via its Universal Serial Interface (USI) - don't try to use both at the same time. Crosstalk on the bus could be nasty! SpecificationsCore Processor AVRCore Size 8-BitSpeed 20MHzConnectivity USIPeripherals Brown-out Detect/Reset, POR, PWM, WDTNumber of I /O 6Program Memory Size 8KB (4K x 16)Program Memory Type FLASHEEPROM Size 512 x 8RAM Size 512 x 8Voltage - Supply (Vcc/Vdd) 2.7 V ~ 5.5 VData Converters A/D 4x10bOscillator Type InternalOperating Temperature -40°C ~ 85°CPackage / Case 8-DIP (0.300", 7.62mm)Arduino Library and ExamplesThere is an I2C library and an example of using SPI here.
