ATMEGA2561-16AU
IC MCU 8BIT 256KB FLASH 64TQFP
Quick Answer: The ATMEGA2561-16AU from Microchip Technology is an 8-bit AVR ATmega microcontroller in a 64-TQFP surface-mount package.
- Manufacturer
- Microchip Technology
- Product Category
- Microcontrollers - MCU
- Package
- 64-TQFP
- Stock
- 3,030 pcs
- Availability
- Current quantity subject to confirmation.
Product Attributes
| Manufacturer | Microchip Technology |
|---|---|
| Product Category | Microcontrollers - MCU |
| Connectivity | EBI/EMI, I2C, SPI, UART/USART |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Data Converters | A/D 8x10b |
| EEPROM Size | 4K x 8 |
| Mounting Type | Surface Mount |
| Number of I/O | 54 |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Oscillator Type | Internal |
| Package | Tray |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Product status | Active |
| Program Memory Size | 256KB (128K x 16) |
| Program Memory Type | Flash |
| RAM Size | 8K x 8 |
| Series | AVR® ATmega |
| Speed | 16MHz |
| Supplier Device Package | 64-TQFP (14x14) |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 5.5V |
| Datasheet | View Datasheet PDF |
Procurement Snapshot
Key supply and purchasing information for ATMEGA2561-16AU.
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Detailed Description for ATMEGA2561-16AU
Product Overview
The ATMEGA2561-16AU from Microchip Technology is an 8-bit AVR ATmega microcontroller in a 64-TQFP surface-mount package. It operates at 16MHz, provides 256KB of flash program memory, 8K x 8 RAM, and 4K x 8 EEPROM, with 54 I/O pins. The device includes an internal oscillator and supports EBI/EMI, I2C, SPI, and UART/USART connectivity. It operates from 4.5V to 5.5V and is rated from -40°C to 85°C ambient temperature.
Key Features
- 8-bit AVR core operating at 16MHz
- 256KB flash program memory with 8K x 8 RAM and 4K x 8 EEPROM
- 54 I/O pins
- EBI/EMI, I2C, SPI, and UART/USART interfaces
- Eight 10-bit analog-to-digital converter channels
- PWM, watchdog timer, power-on reset, and brown-out detect/reset peripherals
- Internal oscillator
- 4.5V to 5.5V supply range
- -40°C to 85°C ambient operating range
- 64-TQFP surface-mount package
Applications
- Embedded control systems requiring multiple digital I/O and serial communication
- Sensor data acquisition using 10-bit analog-to-digital conversion
- Timing and control output generation with PWM
- Communication gateways using I2C, SPI, or UART/USART
Design & Procurement Notes
Design teams should verify that the system supply is within 4.5V to 5.5V and that the ambient environment remains within -40°C to 85°C. The 64-TQFP surface-mount package and 54 I/O pins affect board layout, connector planning, and peripheral routing. The internal oscillator and 16MHz speed are relevant to clocking requirements, while the EBI/EMI, I2C, SPI, and UART/USART interfaces provide options for bus or serial devices. The 256KB flash, 8K x 8 RAM, and 4K x 8 EEPROM should be evaluated against firmware, runtime data, and storage needs. The brown-out detect/reset, power-on reset, watchdog timer, PWM, and analog-to-digital conversion functions should be considered in system supervision and control design.
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