ATMEGA2560-16AU (8-Bit AVR Microcontroller - 100-TQFP SMD Package)

When your project completely outgrows the capabilities of standard microcontrollers—when you run out of memory, exhaust all your hardware serial ports, and simply need more pins—the ATMEGA2560-16AU is the ultimate solution. Famous worldwide as the silicon heart of the Arduino Mega 2560, this chip is an absolute powerhouse. It delivers a staggering 256KB of Flash memory and 8KB of SRAM, providing the massive headroom necessary to run complex real-time operating systems (RTOS), buffer high-resolution TFT displays, and parse massive strings of JSON data from Wi-Fi modules without crashing.

The "-16AU" designation indicates this chip is rated for 16MHz operation and is housed in a dense, 100-pin Thin Quad Flat Package (TQFP). While the 0.5mm pin pitch requires a steady hand or a hot-air rework station to solder, it rewards you with an incredible 86 programmable I/O pins. Equipped with four independent hardware UARTs, a 16-channel ADC, and extensive PWM capabilities, this surface-mount IC is the premier choice for designing custom, professional-grade motherboards for heavy machinery and complex robotics.

Key Features & Functional Advantages:

• Colossal Memory Footprint: With 256KB of Flash memory and 8KB of SRAM, it easily accommodates massive, bloated libraries and complex C/C++ firmware that would instantly crash an ATmega328P.

• Quadruple Hardware UARTs: Features four completely independent hardware serial ports. You can simultaneously talk to a PC, a GPS module, a Bluetooth transceiver, and a touchscreen display without ever relying on CPU-hogging software serial.

• Extreme I/O Capacity: Offers 86 general-purpose I/O pins, allowing you to connect dozens of sensors, relays, buttons, and shift registers directly to the processor.

• Advanced PWM & Timers: Boasts 15 dedicated PWM channels and six independent hardware timers, making it ideal for multi-axis motor control and complex LED matrix dimming.

• Arduino Mega Native: 100% compatible with the Arduino Mega core. If you prototype on a standard Mega 2560, your code will port flawlessly to this bare IC on your custom PCB.

Perfect For:

• 3D Printer Motherboards: The historic, legendary processor behind the RAMPS 1.4 shield and the Marlin firmware, perfectly suited for managing multi-axis stepper drivers and heated bed thermistors.

• Custom CNC Controllers: Delivers the precise timing, massive I/O, and hardware interrupts required to manage limit switches, spindle speeds, and multiple NEMA stepper motors.

• Complex Smart Home Hubs: The ideal central brain for a custom IoT gateway, using its massive pin count and four serial ports to aggregate data from multiple sub-networks.

• Scaling Arduino Mega Prototypes: The definitive chip for migrating a messy, wire-tangled Arduino Mega breadboard project into a sleek, professional, single-board commercial product.

Technical Specifications:

• Core Processor: 8-Bit AVR RISC

• Maximum Clock Speed: 16 MHz

• Program Memory (Flash): 256 KB (Note: 8KB is typically reserved if using the Arduino Mega bootloader)

• SRAM: 8 KB

• EEPROM: 4 KB

• Operating Voltage Range: 4.5V – 5.5V (Required for reliable 16MHz operation)

• Total I/O Pins: 86

• Analog-to-Digital Converter (ADC): 16 Channels, 10-bit resolution

• Communication Interfaces: 4 x UART/USART, 1 x SPI, 1 x I2C (Two-Wire Interface)

• Hardware Timers: Six total (Two 8-bit, Four 16-bit)

• Package / Case: 100-TQFP (Thin Quad Flat Package, 0.5mm pitch)

• Mounting Type: Surface Mount (SMD/SMT)

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Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.