NXP Semiconductors P89V51RC2FN Controller Family/series: (8051) 8052 Core Size: 8bit Cpu Speed: 33MHz Data Bus Width: 8 Bit Device Core: 80C51 Family Name: 89V Interface Type: SPI/UART Maximum Speed: 40 MHz No. Of I/o's: 32 No. Of Pwm: RoHS Compliant No. Of Timers: 4 Number Of Programmable I/os: 32 Number Of Timers: 3 Operating Supply Voltage: 5 V Operating Temperature: -40 to 85 ?‚?°C Oscillator Type: External Only Package: 40PDIP Program Memory Size: 32KB Program Memory Type: Flash Ram Memory Size: 1KB Ram Size: 1 KB