ATSAME53J20A-AU-EFP - 120MHz Cortex-M4F 1MB Flash MCU | Microchip
MPN: ATSAME53J20A-AU-EFP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $9.1 | $91.00 |
| 100 | $8.2 | $820.00 |
| 500 | $7.45 | $3,725.00 |
| 1,000 | $6.8 | $6,800.00 |
ATSAME53J20A-AU-EFP Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. Within the broader hierarchy, the ATSAME53J20A belongs to the Cortex-M4F class of microcontrollers -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The Cortex-M4F adds a single-precision floating-point unit (FPU) and DSP extensions over the base Cortex-M4, enabling efficient signal-processing workloads.
Key features include 120 MHz core speed with FPU, 1 MB dual-panel Flash with ECC, 256 KB SRAM with ECC, 51 programmable I/O pins, a 10/100 Ethernet MAC, USB 2.0 Full-Speed Host/Device, two CAN-FD controllers, two I2C, four SERCOM-configurable UART/SPI/I2C, a 12-bit 1 Msps ADC, and multiple 16-bit timers. The device supports 1.62V to 3.6V core supply, industrial -40C to +85C operation, and offers cryptographic accelerators (AES, TRNG).
Architecturally, the SAM E53 combines an advanced Flash controller with prefetch/cache for deterministic execution, an integrated high-speed bus matrix for low-latency peripheral access, and a low-power architecture with multiple sleep modes. The Ethernet MAC includes IEEE 1588 timestamping, making it suitable for industrial Ethernet protocols. Hardware cryptographic accelerators offload AES and TRNG operations, reducing CPU load.
Typical applications include industrial Ethernet gateways, Building Automation BACnet/Modbus nodes, smart energy metering, USB-CAN bridges, IoT edge devices with Ethernet connectivity, factory automation PLCs, motor control, and human-machine interface (HMI) panels. The combination of Ethernet + USB + CAN-FD makes it ideal for protocol-conversion bridges in industrial 4.0 deployments.
When designing with this device, plan for a stable 3.3V supply rail with adequate decoupling (100 nF + 4.7 uF near each VDD pin). The Ethernet MAC requires an external PHY and 49.9 ohm 1% termination resistors on the differential pairs routed as 100-ohm differential impedance. Configure unused I/O as analog inputs with pulled-up enables to minimize leakage and EMI.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including same-family variants with different package/flash sizes and verified parametric compatibility for direct second-source qualification.
Drop-in alternatives for ATSAME53J20A-AU-EFP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAME53J20A-AU-EFP (same form factor and footprint) — differing in DAC, Ethernet, ADC, Package, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAME53J20A-AUT-EFP
✅ Drop-In✓ In Stock
$6.45 / Unit
View Datasheet →ATSAME54P20A-AU-EFP
✅ Drop-In✓ In Stock
$9.46 / Unit
View Datasheet →ATSAME51J20A-AU-EFP
✅ Drop-In✓ In Stock
$4.35 / Unit
View Datasheet →ATSAMD51J20A-AUT-EFP
✅ Drop-In✓ In Stock
$7.8 / Unit
View Datasheet →ATSAME53J19A-MU-EFP
✅ Drop-In✓ In Stock
$8.05 / Unit
View Datasheet →ATSAME51N20A-AU-EFP
✅ Drop-In✓ In Stock
$8.1 / Unit
View Datasheet →ATSAME53J20A-AU-EFP Maximum Ratings & Electrical Characteristics
| Core Processor | ARM Cortex-M4F |
| Core Size | 32-Bit Single-Core |
| Maximum CPU Speed | 120 MHz |
| Program Memory Size (Flash) | 1 MB (1M x 8) with ECC, dual-panel |
| RAM Size | 256 KB SRAM with ECC |
| Package | 64-TQFP (10x10 mm) |
| Number of I/O | 51 |
| Supply Voltage (VDD) | 1.62 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (industrial grade AU suffix) |
| Mounting Type | Surface Mount |
| Ethernet | 10/100 MAC with IEEE 1588 |
| USB | USB 2.0 Full-Speed Host/Device |
| CAN | 2x CAN-FD controllers |
| ADC | 12-bit, up to 1 Msps |
| Cryptography | AES, True Random Number Generator (TRNG) |
| RoHS Status | Compliant |
ATSAME53J20A-AU-EFP 64-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for ATSAME53J20A-AU-EFP (64-tqfp (10x10 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATSAME53J20A-AU-EFP.
Refer to the datasheet for full pin configuration.
Typical Applications
ATSAME53J20A-AU-EFP is suitable for 6 applications: Industrial Ethernet Gateway, Building Automation Controller, USB-CAN Bridge Module, Smart Energy Meter, IoT Edge Device with Ethernet, Human-Machine Interface (HMI) Panel.
Industrial Ethernet Gateway
The ATSAME53J20A-AU-EFP is engineered for industrial Ethernet gateways by combining its 120 MHz Cortex-M4F, integrated 10/100 Ethernet MAC with IEEE 1588 hardware timestamping, and CAN-FD controllers. The FPU accelerates TCP/IP and Modbus TCP stack processing while the AES accelerator handles secure boot and TLS handshakes. Placing the MCU between an external PHY and the field-bus network reduces BOM cost vs MCU + Ethernet controller + crypto chip solutions. At 3.3 V supply and 120 MHz operation, expect active current near 30 mA/MHz, manageable with a 1 oz copper pour. Compared to ATSAME51J20A-AU, the E53 variant adds the Ethernet MAC which is critical for protocol-conversion nodes.
Recommended
Building Automation Controller
Building automation BACnet/IP and Modbus TCP nodes benefit from the ATSAME53J20A-AU-EFP's Ethernet MAC, dual CAN-FD for elevator/HVAC buses, and 256 KB SRAM for protocol-stack buffers. The industrial -40 to +85 C temperature grade ensures reliable operation in basement mechanical rooms and rooftop equipment closets. The Cortex-M4F DSP extensions handle PID loops for damper and valve actuators with sub-millisecond response. The 1 MB Flash supports BACnet/Modbus stack plus application logic without external memory. Compared to ATSAMD51J20A-AUT-EFP, the E53 retains Ethernet and CAN-FD, making it a stronger fit for building-automation protocol bridges.
Recommended
USB-CAN Bridge Module
USB-CAN bridge designs leverage the ATSAME53J20A-AU-EFP's USB 2.0 Full-Speed host/device controller plus dual CAN-FD ports. The device streams CAN frames over USB CDC class at up to 1 Mbps with hardware timestamping from CAN-FD peripherals. Its 256 KB SRAM buffers 100+ CAN frames before USB transfer, while 1 MB Flash holds USB and CAN protocol stacks. The 64-TQFP (10x10) package is small enough for inline cable-end modules. Compared to ATSAME51J20A-AU, the E53 adds Ethernet MAC for tri-mode bridges (USB <-> CAN <-> Ethernet). Engineers should add common-mode chokes on USB DP/DN lines for automotive EMI compliance.
Recommended
Smart Energy Meter
Smart electricity meters use the ATSAME53J20A-AU-EFP's 12-bit 1 Msps ADC to sample current shunts or CT outputs while Ethernet connects to AMI head-ends. The Cortex-M4F performs FFT-based harmonic analysis on the ADC stream, and the AES engine encrypts metering records for secure transmission. Industrial temperature range ensures operation in outdoor meter enclosures from -40 to +85 C. The 256 KB SRAM buffers time-stamped energy readings between AMI communications. Compared to ATSAME51N20A-AU-EFP, the E53's Ethernet MAC eliminates the need for a separate connectivity MCU. Add a tamper-detection pin via GPIO with internal pull-up for metrology integrity.
Recommended
IoT Edge Device with Ethernet
IoT edge gateways benefit from the ATSAME53J20A-AU-EFP's Ethernet, USB, and CAN-FD combination for connecting downstream sensors and upstream cloud services. The Cortex-M4F handles local analytics (anomaly detection, thresholding) while Ethernet publishes results via MQTT or HTTP. Hardware crypto accelerators (AES, TRNG) secure TLS handshakes to cloud brokers. The 1 MB Flash accommodates AWS/Azure IoT SDKs plus application logic. Compared to ATSAMD51J20A-AUT-EFP, the E53 retains Ethernet, making it better for fixed-location edge nodes that don't need Wi-Fi. Add a watchdog timer and brown-out detector external to the MCU for fail-safe recovery.
Recommended
Human-Machine Interface (HMI) Panel
HMI panels in factory automation use the ATSAME53J20A-AU-EFP to drive TFT LCDs via its 51 GPIO and SERCOM-configurable SPI/parallel interfaces. The 120 MHz Cortex-M4F renders graphics and handles touch input via I2C, while Ethernet connects to PLCs via PROFINET/EtherCAT. The 256 KB SRAM supports frame buffers for small QVGA/WVGA displays. Industrial temperature rating ensures panel operation in factory-floor environments with vibration and temperature swings. Compared to ATSAMD51J20A-AUT-EFP, the E53 retains Ethernet for PROFINET integration. External SDRAM may be needed for >QVGA displays; the E53's EBI interface supports parallel memory expansion.
Recommended
Recommended Products Summary
Engineering reference data for ATSAME53J20A-AU-EFP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME53J20A-AUT-EFP | ATSAME54P20A-AU-EFP | ATSAME51J20A-AU-EFP | ATSAMD51J20A-AUT-EFP | ATSAME53J19A-MU-EFP | ATSAME51N20A-AU-EFP |
|---|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10) - same | 100-TQFP - different | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-VQFN (9x9) - different | 64-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F |
| Maximum Clock Speed | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Size | 1 MB | 1 MB | 1 MB | 512 KB | 1 MB | 512 KB | 1 MB |
| SRAM Size | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| Ethernet MAC | Yes (10/100 + IEEE 1588) | Yes | Yes (dual) | No | No | Yes | No |
| USB | USB 2.0 Full-Speed Host/Device | Yes | Yes | Yes | Yes | Yes | Yes |
| CAN-FD | 2x CAN-FD | 2x | 2x | 2x | No (CAN 2.0B only) | 2x | 2x |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Integrated 10/100 Ethernet MAC with IEEE 1588 timestamping in 64-TQFP (vs ATSAME51J20A-AU-EFP)
- Dual-panel Flash with ECC for live firmware updates (vs ATSAMD51J20A-AUT-EFP)
- Hardware AES + TRNG cryptographic accelerators (vs ATSAME53J19A-MU-EFP)
Design Notes
ATSAME53J20A-AU-EFP requires a clean 3.3 V supply on VDDIN with separate analog supply AVDD and I/O supply VDDIO. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a bulk 4.7 uF ceramic near the MCU. According to Microchip's hardware design guidelines, the integrated DC-DC converter (selected by VDDOUTSEL pin) generates the 1.2 V core voltage; route the inductor traces as a tight 4-layer loop to minimize radiated EMI. Avoid routing high-speed traces beneath the DC-DC inductor footprint.
For the 64-TQFP (10x10 mm) Ethernet-capable variant, route the Ethernet RMII signals (REFCLK, ETH_TX_EN, ETH_TX/ETH_RX data, ETH_MDC/MDIO) as 50 ohm controlled-impedance traces with continuous ground reference. Place the external PHY within 50 mm of the MCU to keep timing margins under RMII specification. The differential pair to the magnetics requires 100 ohm differential impedance. Maintain a 4-layer PCB with dedicated ground plane to suppress common-mode noise.
Keep the 12-bit ADC inputs away from switching nodes such as the DC-DC converter and digital I/O. According to the SAM E53 datasheet, AFEC inputs should reference AVDD with separate analog ground (AGND) tied to digital ground at a single point near the MCU. Place 100 nF + 1 nF decoupling on AVDD. For USB DP/DN traces, route as 90 ohm differential impedance with common-mode choke and ESD protection diode within 5 mm of the connector.
Common pitfalls when designing with ATSAME53J20A-AU-EFP include: (1) forgetting to configure VDDOUTSEL to select the internal DC-DC vs external LDO; (2) using a low-ESR ceramic capacitor directly on VDDOUT without considering the DC-DC stability requirements; (3) routing the 32.768 kHz crystal traces asymmetrically causing RTC drift; (4) not enabling the NVMCTRL dual-panel Flash mode before attempting live firmware updates. Review the SAM E53 errata document before production firmware release.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified; automotive variants would require different part number. Halogen-free status not explicitly stated in verified data.
