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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersATSAME53J20A-MU
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ATSAME53J20A-MU - Microchip Technology

Manufacturer Part Number
ATSAME53J20A-MU
Manufacturer
Microchip Technology
Allelco Part Number
32D-ATSAME53J20A-MU
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
4,876 pcs available, New & Original
Parts Description
IC MCU 32BIT 1MB FLASH 64VQFN
Package
64-VQFN (9x9)
Data sheet
ATSAME53J20A-MU.pdf
RoHs Status
ROHS3 Compliant
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In stock: 4876

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Specifications

ATSAME53J20A-MU Tech Specifications
Microchip Technology - ATSAME53J20A-MU technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - ATSAME53J20A-MU

Product Attribute Attribute Value
Manufacturer Microchip Technology
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.63V
Supplier Device Package 64-VQFN (9x9)
Speed 120MHz
Series SAM E53
RAM Size 256K x 8
Program Memory Type FLASH
Program Memory Size 1MB (1M x 8)
Peripherals Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Package / Case 64-VFQFN Exposed Pad
Package Tray
Product Attribute Attribute Value
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Number of I/O 51
Mounting Type Surface Mount
EEPROM Size -
Data Converters A/D 24x12b; D/A 2x12b
Core Size 32-Bit Single-Core
Core Processor ARM® Cortex®-M4F
Connectivity EBI/EMI, Ethernet, I²C, IrDA, LINbus, MMC/SD, QSPI, SPI, UART/USART, USB
Base Product Number ATSAME53

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 5A992C
HTSUS 8542.31.0001

Parts Introduction

ATSAME53J20A-MU Image
ATSAME53J20A-MU (1)

Manufacturer Part Number

ATSAME53J20A-MU

Manufacturer

Microchip Technology

Introduction

The ATSAME53J20A-MU is a 32-bit single-core microcontroller that features an ARM® Cortex®-M4F core, making it suitable for advanced embedded applications.

Product Features and Performance

Core Processor: ARM® Cortex®-M4F

Core Size: 32-Bit Single-Core

Speed: 120MHz

Connectivity: EBI/EMI, Ethernet, I2C, IrDA, LINbus, MMC/SD, QSPI, SPI, UART/USART, USB

Peripherals: Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT

Program Memory Size: 1MB (1M x 8) FLASH

RAM Size: 256K x 8

Data Converters: A/D 24x12b, D/A 2x12b

Oscillator Type: Internal

Product Advantages

High-speed processing capability at 120MHz

Extensive connectivity options including Ethernet and USB

Robust set of peripherals enhancing device functionality

Large program memory and RAM for complex applications

Key Technical Parameters

Speed: 120MHz

Program Memory: 1MB FLASH

RAM: 256KB

Number of I/O: 51

Voltage - Supply (Vcc/Vdd): 1.71V ~ 3.63V

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Brown-out Detect/Reset

Watchdog Timer (WDT)

Power-on Reset (POR)

Compatibility

Compatible with Surface Mount Technology (SMT)

Supports Voltage Supply from 1.71V to 3.63V

Application Areas

Industrial automation

Consumer electronics

Communication systems

Product Lifecycle

Status: Active

Not nearing discontinuation and continues to be supported with replacements and upgrades

Several Key Reasons to Choose This Product

High processing speed at 120MHz capable of handling complex algorithms

Comprehensive connectivity options suitable for multiple application needs

Supports a wide range of industrial and consumer applications

Strong security and safety features (Brown-out Detect/Reset, WDT, POR)

Long-term availability and support from Microchip Technology

Frequently Asked Questions(FAQ)

How does the ATSAME53J20A-MU compare to other Microchip SAM E53 series MCUs in terms of memory capacity and peripheral integration for industrial automation applications?
The ATSAME53J20A-MU offers 1MB of embedded FLASH memory and 256KB of RAM, which provides a balanced trade-off between code density and runtime data handling compared to smaller variants like the ATSAME53N19A, which features 512KB FLASH. For industrial automation systems requiring moderate algorithm complexity or protocol stack storage, this configuration avoids external memory while supporting robust peripheral sets including Ethernet, USB, and QSPI—reducing board footprint and power consumption relative to higher-end models with larger flash but similar pin counts.
What are the key design considerations when implementing USB functionality on the ATSAME53J20A-MU in battery-powered edge devices operating below 2.5V?
The ATSAME53J20A-MU supports USB OTG up to 3.63V supply, but USB signaling requires 3.3V logic levels. In low-voltage battery applications (e.g., Li-ion down to 2.7V), careful attention must be paid to LDO selection and noise isolation due to analog front-end sensitivity near 1.71V minimum Vdd. Additionally, clock accuracy impacts USB enumeration—ensure the internal PLL is calibrated using an external crystal if timing stability under temperature drift is critical, as the internal RC oscillator alone may not meet USB spec jitter requirements.
Can the ATSAME53J20A-MU drive multiple high-current LED arrays directly without external drivers, and what limits its GPIO performance?
The ATSAME53J20A-MU’s 51 GPIOs can source/sink up to 20mA each (with total package current limited to ~200mA), allowing direct driving of standard LEDs but insufficient for high-brightness arrays or long strings. Driving more than four parallel high-side loads risks exceeding thermal limits or violating I/O bank constraints. External MOSFETs or dedicated LED driver ICs are recommended for such applications, especially when combined with PWM for dimming control via the integrated 12-bit timers.
How does the internal voltage regulator behavior affect startup sequencing in the ATSAME53J20A-MU when using split power domains?
The ATSAME53J20A-MU includes an internal LDO that powers core logic from VDDCORE derived from VDDIN. When designing with split rails (e.g., separate analog and digital supplies), ensure VDDCORE reaches above 1.71V before asserting reset or enabling peripherals to avoid brownout resets during boot. Failure to decouple power-up slopes or bypass capacitors inadequately may cause erratic operation—use at least one 10µF ceramic capacitor per VDDCORE pin close to the device.
What is the impact of operating temperature range (-40°C to +85°C) on clock stability and timing margins when using the internal oscillator of the ATSAME53J20A-MU?
The internal RC oscillator of the ATSAME53J20A-MU has typical ±2% accuracy across the full temperature range, which may introduce significant timing skew in synchronous serial communications like I²C or SPI at baud rates exceeding 1 Mbps. For reliable operation across -40°C to 85°C, an external 4–25 MHz crystal should be used with the built-in PLL to achieve <±50 ppm stability, reducing bit error risk in time-critical protocols such as CAN or Ethernet MAC interfaces.
Compared to ARM Cortex-M4F implementations from competitors, how does the ATSAME53J20A-MU optimize power efficiency in active versus sleep modes?
While all Cortex-M4F cores share similar base instruction throughput, the ATSAME53J20A-MU achieves lower active-power density through integrated analog subsystems and optimized clock gating. At 120MHz, it consumes approximately 35 mA/MHz in run mode with Flash wait states enabled—slightly better than generic M4 implementations lacking hardware acceleration blocks like the DSP engine and floating-point unit tightly coupled with memory bus architecture, yielding faster signal processing loops with reduced CPU cycles per iteration.
Is it possible to use the ATSAME53J20A-MU’s QSPI interface to connect to NOR Flash memory larger than 16 MB, and what configuration constraints apply?
Yes, the ATSAME53J20A-MU supports up to 32 MB addressable space via QSPI in dual- or quad-mode, enabling external NOR Flash beyond onboard 1MB FLASH for firmware updates or data logging. However, the maximum supported clock frequency is 66 MHz, limiting throughput to ~200 Mbps in quad-read mode. Careful PCB layout is required due to strict timing margins on data lines; trace length matching within ±50 ps is advisable to maintain setup/hold compliance during fast read operations.
What precautions should be taken when reflashing the ATSAME53J20A-MU over UART to ensure reliable programming without bricking the device?
Before initiating UART-based programming, verify that the BOOTCFG pins are correctly pulled to enable the ROM bootloader, and confirm that the target voltage (1.71–3.63V) meets the programmer’s supply requirements. Avoid interrupting the erase/program cycle—power loss during FLASH writes can corrupt sectors. Use a robust protocol like SAM-BA with checksum verification and retry logic. Additionally, disable interrupts and clock switching routines during flash operations to prevent unexpected resets.
How does the integrated ADC module in the ATSAME53J20A-MU perform in noisy environments typical of motor control applications, and what sampling strategies improve accuracy?
The ATSAME53J20A-MU’s 24-channel 12-bit SAR ADC achieves ±1 LSB DNL under ideal conditions but degrades significantly near switching regulators or PWM outputs due to ground bounce and crosstalk. To mitigate this, sample during dead times in motor drives, average multiple conversions, and use differential inputs where available. Enable internal PGA gain stages selectively for weak signals, and route analog traces away from digital nets—preferably with guard rings connected to analog ground to isolate noise paths.
What role does the Watchdog Timer (WDT) play in safety-critical deployments using the ATSAME53J20A-MU, and how should it be configured to avoid false triggers?
The independent WDT in the ATSAME53J20A-MU provides fail-safe recovery from software hangs by resetting the system if not periodically serviced within a defined window. In safety deployments, set the timeout based on worst-case task execution latency plus margin. Avoid servicing the WDT inside ISRs unless absolutely necessary, and consider using the Windowed WDT variant if available for stricter timing validation. Never disable the WDT permanently—it serves as a last line of defense against latent software faults.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology ATSAME53J20A-MU

Product Attribute ATSAME53J20A-MUT-EFP ATSAME53J20A-MU-EFP ATSAME53J20A-MUT ATSAME53J20A-AUT
Part Number ATSAME53J20A-MUT-EFP ATSAME53J20A-MU-EFP ATSAME53J20A-MUT ATSAME53J20A-AUT
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Series - - - -
Oscillator Type - - - -
Core Processor - - - -
Number of I/O - - - -
Voltage - Supply (Vcc/Vdd) - - - -
Program Memory Size - - - -
RAM Size - - - -
Core Size - - - -
Speed - - - -
Peripherals - - - -
EEPROM Size - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Data Converters - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Connectivity - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Program Memory Type - - - -
Mounting Type - Surface Mount Through Hole Surface Mount

ATSAME53J20A-MU Datasheet PDF

Download ATSAME53J20A-MU pdf datasheets and Microchip Technology documentation for ATSAME53J20A-MU - Microchip Technology.

PCN Assembly/Origin
Additional assembly site 07/Nov/2022.pdf
PCN Packaging
MBB/Label Chgs 16/Nov/2018.pdf
HTML Datasheet
SAM D5x,E5x Family Datasheet.pdf
PCN Design/Specification
SAM D5X/E5X 05/May/2020.pdf SAM D5X/E5X 08/Jan/2021.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

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ATSAME53J20A-MU Image

ATSAME53J20A-MU

Microchip Technology
32D-ATSAME53J20A-MU

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