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ATSAMD51N20A-AF

MCHPATSAMD51N20A-AF

Microchip Technology
ARM® Cortex®-M4F SAM D51 Microcontroller IC 32-Bit 120MHz 1MB (1M x 8) FLASH 100-TQFP (14x14)
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Overview

The ATSAMD51N20A-AF is a high-performance 32-bit microcontroller featuring an ARM Cortex-M4F processor with a floating-point unit (FPU) running at speeds up to 120MHz. It is equipped with 1MB of Flash memory and 256KB of RAM, providing ample resources for complex embedded applications. This variant is housed in a 100-pin TQFP package and includes a rich set of peripherals such as dual 12-bit DACs and 28-channel 12-bit ADCs.

Why Choose This Part

The SAM D51 series offers a significant performance boost over the SAM D21, providing four times the clock speed and integrated hardware floating-point support. It excels in power efficiency while maintaining a high I/O count of 81 pins and offering versatile connectivity options like high-speed USB and QSPI.

Applications

Advanced HMI
Driving small to medium graphical displays and touch interfaces using the high-speed QSPI and internal RAM.
Digital Signal Processing
Leveraging the 120MHz clock speed and FPU for real-time audio filtering and sensor data analysis.
Industrial Automation
Utilizing the wide array of serial interfaces including LIN, UART, and SPI for robust communication with sensors and actuators.
Secure IoT Gateways
Implementing secure communication protocols and data logging with help from the MMC/SD interface and hardware peripherals.

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 ~ 125degC (TA)
Supplier Device Package 100-TQFP (14x14)
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.63V

Getting Started

Engineers can begin development using the SAM D51 Curiosity Nano or the SAM E54 Explained Pro evaluation kits. The part is fully supported by the Microchip Harmony v3 framework within MPLAB X IDE, as well as Atmel Studio 7 and the Arduino IDE through third-party board support packages.

Dev Boards

Development boards and breakout modules featuring the ATSAMD51N20A-AF 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-AF (this part) 256K 1MB -40degC ~ 125degC .. —
ATSAMD51N20A-AU 256K 1MB -40degC ~ 85degC (.. 413
ATSAMD51N19A-AU 192K 512KB -40degC ~ 85degC (.. —