Manufacturer: Silicon Laboratories Inc  •  RoHS/pb-free: RoHS   Pb-free  •  Series: C8051F30x  •  Core Processor: 8051  •  Core Size: 8-Bit  •  Speed: 25MHz  •  Connectivity: SMBus (2-Wire/I²C), UART/USART  •  Peripherals: POR, PWM, Temp Sensor, WDT  •  Number of I /O: 8  •  Program Memory Size: 8KB (8K x 8)  •  Program Memory Type: FLASH  •  RAM Size: 256 x 8  •  Voltage - Supply (Vcc/Vdd): 2.7 V ~ 3.6 V  •  Data Converters: A/D 8x8b  •  Oscillator Type: Internal  •  Operating Temperature: -40°C ~ 85°C  •  Package / Case: 14-SOIC (3.9mm Width), 14-SOL  •  Other PartNo: 336-1535-5