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ATSAMD51N20A-AU

MCHPATSAMD51N20A-AU

Microchip Technology
ARM® Cortex®-M4F SAM D51 Microcontroller IC 32-Bit 120MHz 1MB (1M x 8) FLASH 100-TQFP (14x14)
Active413 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ATSAMD51N20A-AU is a high-performance 32-bit microcontroller based on the ARM Cortex-M4F processor with a floating-point unit (FPU) and integrated DSP instructions. It operates at speeds up to 120MHz and features 1MB of Flash memory alongside 256KB of RAM, providing significant computational overhead for demanding embedded applications. The device includes a rich set of peripherals such as Dual 12-bit ADCs, a QSPI interface, and full-speed USB support.

Why Choose This Part

The SAM D51 offers a powerful combination of high-speed performance and versatile connectivity options like QSPI and EBI. Its dual 12-bit ADCs and integrated D/A converters enable precise analog signal processing without external components. The ARM Cortex-M4F core with FPU significantly simplifies complex mathematical computations compared to standard M0+ or M3 cores.

Applications

Industrial Control Systems
Leverages the 120MHz clock speed and FPU for real-time motor control and sensor fusion algorithms.
Human Machine Interface (HMI)
Utilizes the 1MB Flash and large RAM for driving displays via SPI or EBI interfaces while maintaining responsive touch feedback.
Digital Audio Processing
Uses the I2S interface and Cortex-M4F DSP capabilities for audio stream manipulation and playback.
Data Logging
Employs the MMC/SD interface and high-speed QSPI to manage large external storage buffers for sensor data.

Key Specifications

Speed 120MHz
RAM Size 256K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, I2S, POR, PWM
Connectivity EBI/EMI, I2C, IrDA, LINbus, MMC/SD, QSPI, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 81
Core Processor ARM Cortex-M4F
Package / Case 100-TQFP
Data Converters A/D 28x12b; D/A 2x12b
Oscillator Type Internal
Program Memory Size 1MB (1M x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 100-TQFP (14x14)
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.63V

Getting Started

Engineers can begin development using the Microchip SAM D51 Curiosity Nano or the SAM D51 Explained Pro evaluation kits. Software development is supported through the MPLAB X IDE or Microchip Studio, utilizing the Harmony v3 framework for driver configuration and middleware. A standard SWD debugger like the Atmel-ICE is recommended for programming and real-time debugging via the 100-TQFP package pins.

Dev Boards

Development boards and breakout modules featuring the ATSAMD51N20A-AU or compatible chips — ready to use for prototyping.

Adafruit Feather M4 Express Adafruit Industries LLC
ATSAMD51J19 Feather M4 Express SAM D ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Digi-Key 239 in stock
Wio Terminal Seeed Technology Co., Ltd
ATSAMD51 Wio ARM® Cortex®-M4F MCU 32-Bit Embedded Evaluation Board
Digi-Key 497 in stock
Adafruit HalloWing M4 Express Adafruit Industries LLC
ATSAMD51G18 HalloWing M4 Express SAM D ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Development Boards & Kits - ARM Metro M4 feat. Microchip ATSAMD51
Mouser 73 in stock
Development Boards & Kits - ARM Adafruit Grand Central M4 Express featuring the SAMD51
Mouser 116 in stock

ATSAMD51N Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number RAM Flash Temp Range Stock
ATSAMD51N20A-AU (this part) 256K 1MB -40degC ~ 85degC (.. 413
ATSAMD51N20A-AF 256K 1MB -40degC ~ 125degC .. —
ATSAMD51N19A-AU 192K 512KB -40degC ~ 85degC (.. —

Also Consider

MK64FX512VLL12 NXP - Provides 120MHz Cortex-M4F performance with integrated Ethernet MAC if networking is required.

Categories

Microcontrollers > ARM Cortex-M4 Microcontrollers > Microchip