Silicon Laboratories C8051F121-GQR 3rd Party Development Tools: PK51, CA51, A51, ULINK2 Connectivity: EBI/EMI, SMBus (2-Wire/I??C), SPI, UART/USART Core: 8051 Core Processor: 8051 Core Size: 8-Bit Data Bus Width: 8 bit Data Converters: A/D 8x8b, 8x12b; D/A 2x12b Data Ram Size: 8.25 KB Development Tools By Supplier: C8051F120DK Eeprom Size: - Interface Type: I2C, SMBus, SPI, UART Maximum Clock Frequency: 100 MHz Maximum Operating Temperature: + 85 C Minimum Operating Temperature: - 40 C Mounting Style: SMD/SMT Number Of I /o: 32 Number Of Programmable I/os: 32 Number Of Timers: 5 On-chip Adc: 12 bit, 8 Channel On-chip Dac: 12 bit, 2 Channel Operating Supply Voltage: 2.7 V to 3.6 V Operating Temperature: -40?°C ~ 85?°C Oscillator Type: Internal Package / Case: 64-TQFP, 64-VQFP Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT Processor Series: C8051F1x Program Memory Size: 128KB (128K x 8) Program Memory Type: FLASH Ram Size: 8.25K x 8 Series: C8051F12x Speed: 100MHz Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V