Silicon Laboratories C8051T605-GSR Data Bus Width: 8 Bit Device Core: 8051 Family Name: C8051T60x Interface Type: I2C/SMBus/UART Maximum Speed: 25 MHz Number Of Programmable I/os: 8 Number Of Timers: 3 Operating Supply Voltage: 1.8|3 V Operating Temperature: -40 to 85 ?‚?°C Package: 14SOIC Program Memory Size: 2 KB Program Memory Type: EPROM Ram Size: 256 Byte