NXP Semiconductors P89C664HBA/00,512 Connectivity: I??C, UART/USART Core Processor: 8051 Core Size: 8-Bit Data Converters: - Eeprom Size: - Number Of I /o: 32 Operating Temperature: 0?°C ~ 70?°C Oscillator Type: Internal Package / Case: 44-PLCC Peripherals: POR, PWM, WDT Program Memory Size: 64KB (64K x 8) Program Memory Type: FLASH Ram Size: 2K x 8 Series: 89C Speed: 33MHz Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V Other Names: 568-1271-5, 935267448512, P89C664HBA