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| PartNumber | ATMEGA164P-20MQ | ATMEGA164P-20MCU | ATMEGA164P-20MCUR |
| Description | 8-bit Microcontrollers - MCU AVR 16KB, 512B EE 20MHz 1KB SRAM, 5V | IC MCU 8BIT 16KB FLASH 44VQFN | IC MCU 8BIT 16KB FLASH 44VQFN |
| Manufacturer | Microchip | - | - |
| Product Category | 8-bit Microcontrollers - MCU | - | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | VQFN-44 | - | - |
| Series | ATmega164P | - | - |
| Core | AVR | - | - |
| Data Bus Width | 8 bit | - | - |
| Maximum Clock Frequency | 20 MHz | - | - |
| Program Memory Size | 16 kB | - | - |
| Data RAM Size | 1 kB | - | - |
| Number of I/Os | 32 I/O | - | - |
| Operating Supply Voltage | 2.7 V to 5.5 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Tray | - | - |
| Height | 0.88 mm | - | - |
| Length | 7 mm | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | - |
| Width | 7 mm | - | - |
| Brand | Microchip Technology / Atmel | - | - |
| Data RAM Type | SRAM | - | - |
| Data ROM Size | 512 B | - | - |
| Data ROM Type | EEPROM | - | - |
| Interface Type | 2-Wire, JTAG, SPI, USART | - | - |
| Moisture Sensitive | Yes | - | - |
| Number of Timers/Counters | 3 Timer | - | - |
| Processor Series | megaAVR | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 360 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 2.7 V, 4.5 V | - | - |
| Tradename | AVR | - | - |