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| PartNumber | ATMEGA16A-AUR | ATMEGA16A-AU | ATMEGA16A-AU-TR |
| Description | 8-bit Microcontrollers - MCU AVR LCD 16KB FLSH EE 512B 1KB SRAM-16MHZ | 8-bit Microcontrollers - MCU 16KB In-system Flash 2.7V - 5.5V | |
| Manufacturer | Microchip | Microchip | - |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TQFP-44 | TQFP-44 | - |
| Series | ATmega16A | ATmega16A | - |
| Core | AVR | AVR | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 16 MHz | 16 MHz | - |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | - |
| Packaging | Reel | Tray | - |
| Product | MCU | MCU | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Moisture Sensitive | Yes | - | - |
| Processor Series | megaAVR | megaAVR | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 2000 | 160 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Tradename | AVR | AVR | - |
| Unit Weight | 0.009640 oz | 0.077179 oz | - |
| Program Memory Size | - | 16 kB | - |
| Data RAM Size | - | 1 kB | - |
| Number of I/Os | - | 32 I/O | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Maximum Operating Temperature | - | + 85 C | - |
| Height | - | 1 mm | - |
| Length | - | 10 mm | - |
| Program Memory Type | - | Flash | - |
| Width | - | 10 mm | - |
| Data RAM Type | - | SRAM | - |
| Data ROM Size | - | 512 B | - |
| Data ROM Type | - | EEPROM | - |
| Interface Type | - | 2-Wire, SPI, USART | - |
| Number of Timers/Counters | - | 3 Timer | - |
| Supply Voltage Max | - | 5.5 V | - |
| Supply Voltage Min | - | 2.7 V | - |