Supplier: Microchip Technology Part No: ATMEGA48PA-AU RoHS: Unknown HTS: 8542310001 ECCN: EAR99 :  250 ADC Resolution: 10 bit CAN: 0 DAC Resolution: N/A Data Bus Width: 8 bit Device Core: AVR Dimension: 7 x 7 x 1.05(Max) mm Ethernet: 0 Family: ATMEGA48PA Family Name: ATmega I2C: 1 I2S: 0 Instruction Set Architecture: RISC Interface Type: SPI/USART Maximum Clock Rate: 20 MHz Maximum CPU Frequency: 20 MHz Maximum Expanded Memory Size: N/A Maximum Operating Supply Voltage: 5.5 V Maximum Power Dissipation: N/A Minimum Operating Supply Voltage: 1.8 V Mounting: Surface Mount Number of ADCs: Single Number of DACs: N/A Number of Programmable I/Os: 23 Number of Timers: 3 On-Chip ADC: 8 On-Chip DAC: N/A Operating Temperature: -40 to 85 ?C Packaging: Tray Pin Count: 32 Program Memory Size: 4 KB Program Memory Type: Flash RAM Size: 512 B SPI: 1 Supplier Package: TQFP Supplier Temperature Grade: Industrial Typical Operating Supply Voltage: 2.5,3.3,5 V UART: 0 USART: 1 USB: 0 Unit of Measure: Per Each