8-bit AVR microcontroller featuring 256KB FLASH memory and 8KB RAM. Operates at a maximum frequency of 16MHz with an 8-bit data bus width. Offers 54 I/O pins, 6 PWM channels, and 6 timers/counters. Supports I2C, SPI, and UART interfaces. Packaged in a 64-pin QFN for surface mounting, with an operating temperature range of -40°C to 85°C.
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Microchip ATMEGA2561-16MU technical specifications.
| Access Time | 16us |
| Package/Case | QFN |
| Core Architecture | AVR |
| Data Bus Width | 8b |
| Frequency | 16MHz |
| Height | 0.95mm |
| Interface | I2C, SPI, UART, USART, EBI/EMI, 2-Wire |
| Lead Free | Lead Free |
| Length | 9.1mm |
| Max Frequency | 16MHz |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Supply Voltage | 5.5V |
| Memory Size | 256KB |
| Memory Type | FLASH, |
| Min Supply Voltage | 4.5V |
| Mount | Surface Mount |
| Number of ADC Channels | 8 |
| Number of Bits | 8 |
| Number of I/Os | 54 |
| Number of I2C Channels | 1 |
| Number of PWM Channels | 6 |
| Number of SPI Channels | 1 |
| Number of Timers/Counters | 6 |
| Oscillator Type | Internal |
| Packaging | Tray |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| RAM Size | 8KB |
| Reach SVHC Compliant | No |
| RoHS Compliant | Yes |
| Series | AVR® ATmega |
| Width | 9.1mm |
| RoHS | Compliant |
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