Silicon Laboratories C8051F700-GQR Data Bus Width: 8 Bit Device Core: 8051 Family Name: C8051F70x Interface Type: I2C/SMBus/SPI/UART Maximum Speed: 25 MHz Number Of Programmable I/os: 54 Number Of Timers: 4 On-chip Adc: 16-chx10-bit Operating Supply Voltage: 1.8|3 V Operating Temperature: -40 to 85 ?‚?°C Package: 64TQFP Program Memory Size: 15 KB Program Memory Type: Flash Ram Size: 512 Byte