| PartNumber | ATMEGA3250P-20AU | ATMEGA3250PA-AU | ATMEGA3250P-20AUR |
| Description | 8-bit Microcontrollers - MCU AVR 32K FLSH 2K SRAM 1KB EE - 20 MHZ 5V | 8-bit Microcontrollers - MCU AVR 32K FL 2K SRAM 1KB EE 20 MHZ GRN | 8-bit Microcontrollers - MCU AVR 32K FLSH 2K SRAM 1KB EE-20MHz IND,5V |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TQFP-100 | TQFP-100 | TQFP-100 |
| Series | ATmega3250P | ATmega3250PA | ATmega3250P |
| Core | AVR | AVR | AVR |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz |
| Program Memory Size | 32 kB | 32 kB | - |
| Data RAM Size | 2 kB | 2 kB | - |
| ADC Resolution | 10 bit | - | - |
| Number of I/Os | 69 I/O | - | - |
| Operating Supply Voltage | 2.7 V to 5.5 V | 1.8 V to 5.5 V | 2.7 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tray | Tray | Reel |
| Height | 1 mm | - | - |
| Length | 14 mm | - | - |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | - | - |
| Width | 14 mm | - | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data RAM Type | SRAM | - | - |
| Data ROM Size | 1 kB | - | - |
| Data ROM Type | EEPROM | - | - |
| Interface Type | JTAG, SPI, USART, USI | - | - |
| Analog Supply Voltage | - | - | - |
| DAC Resolution | - | - | - |
| I/O Voltage | 1.8 V to 5.5 V | - | - |
| Moisture Sensitive | Yes | - | - |
| Number of ADC Channels | 8 Channel | - | - |
| Number of Timers/Counters | 3 Timer | - | - |
| Processor Series | megaAVR | megaAVR | megaAVR |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 90 | 90 | 1500 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 2.7 V | - | - |
| Tradename | AVR | AVR | AVR |
| Watchdog Timers | Watchdog Timer | - | - |
| Unit Weight | 0.023175 oz | 0.023175 oz | - |