| PartNumber | AT90PWM2-16SQ | AT90PWM216-16SU | AT90PWM2-16SQR |
| Description | 8-bit Microcontrollers - MCU AVR 8K Flash 3PSC, 16MHz | 8-bit Microcontrollers - MCU AVR 16KFLASH 2PSC BALLAST 16MHz | 8-bit Microcontrollers - MCU AVR 8K FLASH 3PSC, 16MHz |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | SOIC-24 | SOIC-24 | SOIC-24 |
| Series | AT90PWM2 | AT90PWM261 | AT90PWM2 |
| Core | AVR | AVR | AVR |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 16 MHz | 16 MHz | - |
| Program Memory Size | 8 kB | 16 kB | - |
| Data RAM Size | 512 B | 1 kB | - |
| ADC Resolution | 10 bit | - | - |
| Number of I/Os | 19 I/O | 53 I/O | - |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 105 C | + 105 C | - |
| Packaging | Tube | Tube | Reel |
| Height | 2.35 mm | 2.35 mm | - |
| Length | 15.6 mm | 15.6 mm | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | Flash | - |
| Width | 7.6 mm | 7.6 mm | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Data RAM Type | SRAM | - | - |
| Data ROM Size | 512 B | - | - |
| Data ROM Type | EEPROM | - | - |
| Interface Type | SPI, USART | SPI, USART | - |
| Analog Supply Voltage | - | - | - |
| DAC Resolution | 10 bit | - | - |
| I/O Voltage | - | - | - |
| Moisture Sensitive | Yes | Yes | Yes |
| Number of ADC Channels | 11 Channel | - | - |
| Number of Timers/Counters | 2 Timer | 2 Timer | - |
| Processor Series | AT90PWM2 | AT90PWMx | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 31 | 31 | 1000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 2.7 V | 2.7 V | - |
| Watchdog Timers | Watchdog Timer | - | - |
| Unit Weight | 0.038731 oz | 0.038731 oz | 0.038731 oz |