Supplier: Microchip Technology Part No: AT80C51RD2-3CSUM RoHS: Unknown HTS: 8542310001 ECCN: 3A991.a.2 :  10 ADC Resolution: N/A CAN: 0 DAC Resolution: N/A Data Bus Width: 8 bit Device Core: 80C51 Dimension: 53.21(Max) x 14.73(Max) x 4.95(Max) mm Ethernet: 0 Family: AT80C51RD2 Family Name: AT80 I2C: 0 I2S: 0 Instruction Set Architecture: CISC Interface Type: UART Maximum Clock Rate: 40 MHz Maximum CPU Frequency: 40 MHz Maximum Expanded Memory Size: 64 KB Maximum Operating Supply Voltage: 5.5 V Maximum Power Dissipation: 1000 mW Minimum Operating Supply Voltage: 2.7 V Mounting: Through Hole Number of ADCs: N/A Number of DACs: N/A Number of Programmable I/Os: 32 Number of Timers: 3 On-Chip ADC: N/A On-Chip DAC: N/A Operating Temperature: -40 to 85 ?C Packaging: Tube Pin Count: 40 Program Memory Size: N/R Program Memory Type: ROMLess RAM Size: 1.25 KB SPI: 0 Supplier Package: PDIP Supplier Temperature Grade: Industrial Typical Operating Supply Voltage: 3.3,5 V UART: 1 USART: 0 USB: 0 Unit of Measure: Per Each