8-bit AVR microcontroller featuring 64KB FLASH memory and 4KB RAM. Operates at up to 20MHz with an internal oscillator. Offers I2C, SPI, and UART/USART interfaces, with 32 programmable I/Os. Includes Brown-out Detect/Reset, POR, PWM, and WDT peripherals. Operates across a wide temperature range of -40°C to 85°C, with a supply voltage from 1.8V to 5.5V. RoHS compliant.
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Microchip ATMEGA644PA-AUR technical specifications.
| Package/Case | A |
| Core Architecture | AVR |
| Frequency | 20MHz |
| Interface | I2C, SPI, UART, USART |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Supply Voltage | 5.5V |
| Memory Size | 64KB |
| Memory Type | FLASH, |
| Min Supply Voltage | 1.8V |
| Number of I/Os | 32 |
| Oscillator Type | Internal |
| Packaging | Cut Tape |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| RAM Size | 4KB |
| Reach SVHC Compliant | No |
| RoHS Compliant | Yes |
| Series | AVR® ATmega |
| RoHS | Compliant |
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