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ATMEGA2561V-8AU
ATMEGA2561V-8AU
| Part Number | ATMEGA2561V-8AU |
|---|---|
| Manufacturer | Microchip Technology (Atmel) |
| Category | Integrated Circuits (ICs) > Embedded – Microcontrollers (MCU) |
| Description | 8-Bit AVR RISC Microcontroller, 8MHz Clock, 256KB Flash, 8KB SRAM, 4KB EEPROM, Low-Voltage 1.8V-5.5V, 64-TQFP Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The ATMEGA2561V-8AU is a low-power 8-bit AVR RISC microcontroller from Microchip (Atmel). Based on single-cycle RISC architecture, it runs up to 8MHz with 1MIPS per MHz efficiency. Supporting 1.8V~5.5V low-voltage operation, it integrates 256KB self-programmable Flash, 8KB SRAM and 4KB EEPROM. Equipped with 16-channel 10-bit ADC, timers, USART, SPI and I2C interfaces. Packaged in 64-TQFP, industrial temperature range -40°C ~ +85°C, ideal for battery devices, industrial control and portable instruments.
Core Advantages
Ultra-Low Power & Low-Voltage Operation
The V-series supports 1.8V~5.5V wide voltage input and multiple configurable sleep modes for battery-powered equipment.
High Memory Density
256KB Flash, 8KB SRAM and 4KB EEPROM support complex algorithms and local data storage without external memory.
Rich Integrated Peripherals
Built-in 16-channel 10-bit ADC, 2×8-bit & 3×16-bit PWM timers, dual USART, SPI and I2C communication interfaces.
High Reliable Hardware Design
Onboard JTAG debug interface, independent watchdog timer and power-on reset circuit to guarantee stable real-time operation.
Key Specifications
| Brand | Microchip Technology / Atmel |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free / Green |
| EDA/CAD Model | Schematic symbol models, 3D CAD step profiles, and 64-TQFP PCB footprint land patterns are available on request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | 64-TQFP (14.0 mm × 14.0 mm) |
| Mounting Type | Surface Mount (SMT / SMD) |
| Surface Marking / Silkscreen | ATMEGA2561V-8AU / Atmel logo, Marking |
| Processor Core | 8-Bit AVR RISC |
| Maximum Clock Frequency | 8 MHz |
| Program Memory (Flash) | 256 Kilobytes (256 KB) |
| RAM Size (SRAM) | 8 KB |
| Data EEPROM | 4 KB |
| Supply Voltage (VCC) | 1.8V to 5.5V |
| I/O Pin Count | 54 Programmable I/O Lines |
| Connectivity | 2x USART, SPI, I2C / TWI, JTAG Interface |
| Analog Peripherals | 16-Channel 10-Bit ADC |
| Timer / PWM | 2 × 8-bit Timer, 3 × 16-bit Timer with PWM capability |
| Watchdog Timer | Built-in Independent Oscillator Watchdog Timer |
| Program Memory Type | In-System Self-Programmable Flash |
| Operating Temperature Range | -40°C to +85°C (Industrial Grade) |
| Packaging Format | Tray / Tape & Reel |
Typical Applications
- Industrial automation modules, programmable logic controllers (PLCs), and sensor nodes
- Battery-powered wireless monitoring devices and IoT smart edge devices
- Smart energy utility meters, environmental data loggers, and telemetry terminals
- Commercial security control panels, access control systems, and HVAC controllers
- Medical diagnostics instruments, portable testing tools, and robotics controllers
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What is the difference between ATMEGA2561V-8AU and ATMEGA2561-16AU?
A: ATMEGA2561V-8AU supports 1.8V~5.5V low voltage operation, maximum clock speed 8MHz. Standard ATMEGA2561-16AU works at 2.7V~5.5V and supports up to 16MHz clock frequency.
Q2: What does the “AU” suffix stand for in ATMEGA2561V-8AU?
A: “A” means 64-TQFP package; “U” indicates lead-free RoHS version with industrial temperature range -40°C ~ +85°C.
Q3: Can ATMEGA2561 replace ATMEGA2561V-8AU directly?
A: Not fully compatible. Standard ATMEGA2561 lacks 1.8V low-voltage capability. It can be a substitute only if your system supply voltage is above 2.7V.
Q4: What is the difference between ATMEGA2560 and ATMEGA2561V-8AU?
A: Both have identical memory size. ATMEGA2561V-8AU uses 64-TQFP (54 I/O, 16 ADC channels). ATMEGA2560 adopts 100-pin package with more I/O ports.
Q5: Which programmers can be used to program ATMEGA2561V-8AU?
A: Supported tools: Atmel-ICE, Microchip ICE, AVRISP mkII. Programming via ISP or JTAG interface in Microchip Studio.
Q6: Are there alternative AVR MCUs with similar specifications?
A: ATMEGA1281V can be an alternative if smaller Flash (128KB) meets demands. If more memory is needed, you can consider ATMEGA2560 for hardware redesign.
Q7: Does ATMEGA2561V-8AU support in-system programming (ISP)?
A: Yes. It supports self-programmable Flash, allowing firmware upgrade without removing the chip from PCB.
Q8: Can I run ATMEGA2561V-8AU at 8MHz under 1.8V power supply?
A: Yes. The V series is specially designed to stably run full 8MHz frequency at the minimum 1.8V supply voltage.
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