Manufacturer: Atmel  •  Series: 89C  •  Core Processor: 8051  •  Core Size: 8-Bit  •  Speed: 60MHz  •  Connectivity: I²C, SPI, UART/USART  •  Peripherals: POR, PWM, WDT  •  Number of I /O: 34  •  Program Memory Size: 64KB (64K x 8)  •  Program Memory Type: FLASH  •  EEPROM Size: 2K x 8  •  RAM Size: 2K x 8  •  Voltage - Supply (Vcc/Vdd): 2.7 V ~ 5.5 V  •  Oscillator Type: External  •  Operating Temperature: -40°C ~ 85°C  •  Package / Case: 44-VQFP  •  Other PartNo: AT89C51ID2RLRIMTR