ATSAME51J20A-AU - Cortex-M4F MCU 120MHz 1MB Flash | Microchip
MPN: ATSAME51J20A-AU ✓ AktifATSAME51J20A-AU Ringkasan
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals. The Cortex-M4F belongs to the ARM Cortex-M family of energy-efficient processors designed for embedded deterministic control; the 'F' suffix denotes the integrated single-precision Floating Point Unit, which accelerates DSP-style math without taxing the integer pipeline. Within the broader semiconductor taxonomy, MCUs sit inside the Integrated Circuits > Microcontrollers segment, and the SAM E51 series is Microchip's high-performance Cortex-M4F line intended to bridge the gap between the Cortex-M0+ SAM D family and Cortex-M7 SAM S/E7 families.
Key features of the ATSAME51J20A-AU include 120 MHz core with FPU, 1 MB dual-panel Flash with ECC, 256 KB SRAM, a 16-bit accurate ADC peripheral set, and hardware crypto accelerators for AES and True Random Number generation. The device integrates a USB 2.0 Full-Speed transceiver, multiple SERCOM modules that can be configured as UART/SPI/I2C, CAN-FD controllers, and a sophisticated Event System for deterministic peripheral-to-peripheral signaling without CPU intervention. Power management provides multiple low-power Sleep modes, a battery backup domain, and a temperature range of -40C to +85C suitable for industrial environments.
Architecturally, the SAM E51 uses a 3-layer AHB bus matrix connecting the Cortex-M4F core to Flash, SRAM, and peripherals, with a dedicated bridge to the low-power peripherals. Dual-panel Flash allows read-while-write operation, supporting live firmware updates, and the integrated error-correction code (ECC) on Flash and SRAM improves reliability in electrically noisy industrial environments. The FreeRTOS-friendly architecture and Microchip's MPLAB Harmony 3 framework make it well suited for connected industrial sensor nodes, graphical HMIs, and protocol bridge applications.
Typical applications include industrial CAN-FD nodes, USB-connected sensor hubs, motor control FOC firmware, building automation gateways, and medical instrumentation front-ends. The wide operating voltage range of 1.71V to 3.63V simplifies battery-backed designs and direct 3.3V rail connection. When designing with this MCU, allocate a 4.7uF decoupling capacitor bank near the VDD pins and keep the SWD trace length below 50 mm to ensure reliable debug access throughout the product lifetime.
This page synthesizes distributor pricing, drop-in alternatives from the same SAM E51 family and from competing Cortex-M4F pin-compatible parts, and practical design notes not consolidated in a single manufacturer document.
Alternatif penggantian untuk ATSAME51J20A-AU — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian ATSAME51J20A-AU (sama faktor bentuk dan footprint) — berbeda di dalam ADC, DAC, USB, SRAM, Package.
ATSAME51J19A-AUT-EFP
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAMD51J20A-AUT-EFP
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →ATSAMD51N20A-AU
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →ATSAME51J20A-AU Rating Maksimal & Karakteristik Listrik
| Core Architecture | ARM Cortex-M4F with single-precision FPU |
| Maximum Core Frequency | 120 MHz |
| Flash Memory | 1 MB (dual-panel with ECC) |
| SRAM | 256 KB |
| Operating Voltage Range | 1.71 V to 3.63 V |
| Paket | 64-pin TQFP (10x10 mm) |
| Jumlah Pin | 64 |
| Rentang Suhu Kerja | -40 C to +85 C |
| USB | USB 2.0 Full-Speed with on-chip transceiver |
| CAN | CAN-FD controllers |
| SERCOM Modules | Configurable as UART / SPI / I2C |
| ADC | 16-bit sigma-delta and 12-bit SAR ADC |
| Hardware Crypto Accelerator | AES, TRNG |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Konfigurasi Pin ATSAME51J20A-AU
| Pin produk 1 | PA00 — GPIO / XIN0 (crystal oscillator input) |
| Pin produk 2 | PA01 — GPIO / XOUT0 (crystal oscillator output) |
| Pin produk 3 | PA02 — GPIO / AIN0 (ADC input) |
| Pin produk 4 | PA03 — GPIO / AIN1 (ADC input) |
| Pin produk 5 | VDD — Digital supply voltage |
| Pin produk 6 | VSS — Ground |
| Pin produk 7 | PA04 — GPIO / AIN2 |
| Pin produk 8 | PA05 — GPIO / AIN3 |
| Pin produk 9 | PA06 — GPIO / AIN4 |
| Pin produk 10 | PA07 — GPIO / AIN5 |
| Pin produk 11 | PA08 — GPIO / AIN6 |
| Pin produk 12 | PA09 — GPIO / AIN7 |
| Pin produk 13 | PA10 — GPIO / AIN8 |
| Pin produk 14 | PA11 — GPIO / AIN9 / SERCOM |
| Pin produk 15 | PA12 — GPIO / SERCOM |
| Pin produk 16 | PA13 — GPIO / SERCOM |
| Pin produk 17 | PA14 — GPIO / SERCOM |
| Pin produk 18 | PA15 — GPIO / SERCOM |
| Pin produk 19 | PA16 — GPIO / SERCOM |
| Pin produk 20 | PA17 — GPIO / SERCOM |
| Pin produk 21 | PA18 — GPIO / SERCOM |
| Pin produk 22 | PA19 — GPIO / SERCOM |
| Pin produk 23 | PA20 — GPIO / SERCOM |
| Pin produk 24 | PA21 — GPIO / SERCOM |
| Pin produk 25 | PA22 — GPIO / SERCOM |
| Pin produk 26 | PA23 — GPIO / SERCOM / USB D- |
| Pin produk 27 | PA24 — GPIO / SERCOM / USB D+ |
| Pin produk 28 | PA25 — GPIO / SERCOM |
| Pin produk 29 | PA27 — GPIO |
| Pin produk 30 | RESET — Reset input (active low) |
| Pin produk 31 | VDD — Digital supply voltage |
| Pin produk 32 | VSS — Ground |
| Pin produk 33 | PB00 — GPIO / SERCOM |
| Pin produk 34 | PB01 — GPIO / SERCOM |
| Pin produk 35 | PB02 — GPIO / SERCOM / AIN10 |
| Pin produk 36 | PB03 — GPIO / SERCOM / AIN11 |
| Pin produk 37 | PB04 — GPIO / SERCOM |
| Pin produk 38 | PB05 — GPIO / SERCOM |
| Pin produk 39 | PB06 — GPIO / SERCOM |
| Pin produk 40 | PB07 — GPIO / SERCOM |
| Pin produk 41 | PB08 — GPIO / SERCOM |
| Pin produk 42 | PB09 — GPIO / SERCOM |
| Pin produk 43 | PB10 — GPIO / SERCOM |
| Pin produk 44 | PB11 — GPIO / SERCOM |
| Pin produk 45 | PB12 — GPIO / SERCOM / CAN RX |
| Pin produk 46 | PB13 — GPIO / SERCOM / CAN TX |
| Pin produk 47 | PB14 — GPIO / SERCOM |
| Pin produk 48 | PB15 — GPIO / SERCOM |
| Pin produk 49 | PB16 — GPIO / SERCOM |
| Pin produk 50 | PB17 — GPIO / SERCOM |
| Pin produk 51 | PB18 — GPIO / SERCOM |
| Pin produk 52 | PB19 — GPIO / SERCOM |
| Pin produk 53 | PB20 — GPIO / SERCOM |
| Pin produk 54 | PB21 — GPIO / SERCOM |
| Pin produk 55 | PB22 — GPIO / SERCOM |
| Pin produk 56 | PB23 — GPIO / SERCOM |
| Pin produk 57 | PB24 — GPIO / SERCOM |
| Pin produk 58 | PB25 — GPIO / SERCOM |
| Pin produk 59 | PB26 — GPIO |
| Pin produk 60 | PB27 — GPIO |
| Pin produk 61 | PB28 — GPIO |
| Pin produk 62 | PB29 — GPIO |
| Pin produk 63 | PB30 — GPIO / SWDIO |
| Pin produk 64 | PB31 — GPIO / SWCLK |
Aplikasi Umum
ATSAME51J20A-AU cocok untuk 6 aplikasis: Industrial CAN-FD Sensor Node, USB-Connected Data Acquisition Module, Building Automation Gateway, Motor Control with FOC Firmware, Medical Instrumentation Front-End, Connected IoT Edge Node with OTA Firmware Update.
Industrial CAN-FD Sensor Node
The ATSAME51J20A-AU's integrated CAN-FD controllers combined with its 120 MHz Cortex-M4F core and 1 MB Flash make it a strong fit for industrial sensor nodes that stream 1 kHz process data over a CAN-FD bus. With on-chip hardware crypto (AES, TRNG), designers can add secure firmware and message authentication without external components, and the 256 KB SRAM is sufficient for buffering multi-frame sensor captures. Compared with a discrete MCU plus external CAN controller, the ATSAME51J20A-AU reduces BOM cost and PCB area while simplifying firmware because the SAM E51 peripheral library exposes CAN-FD directly to MPLAB Harmony 3.
Direkomendasikan
USB-Connected Data Acquisition Module
The on-chip USB 2.0 Full-Speed transceiver and 1 MB Flash with ECC position the ATSAME51J20A-AU as an excellent fit for USB-tethered data acquisition modules that stream ADC samples to a host PC at 1 MSPS. The 120 MHz Cortex-M4F core can sustain DMA-fed ADC transfers without dropping samples, and 256 KB SRAM accommodates double-buffered sample pipelines. The 1.71-3.63 V operating range lets the module share a single Li-Ion battery with the analog front-end, simplifying enclosure design.
Direkomendasikan
Building Automation Gateway
For a building automation gateway, the ATSAME51J20A-AU provides multiple SERCOM modules configurable as UART, SPI, and I2C to interface with HVAC controllers, Modbus sensors, and wireless modules. The 1 MB Flash supports a full TCP/IP stack plus Modbus and BACnet application code, while 256 KB SRAM buffers gateway traffic without overflow. The -40 C to +85 C industrial temperature range ensures reliable operation in unconditioned equipment rooms.
Direkomendasikan
Motor Control with FOC Firmware
Field-Oriented Control (FOC) for brushless DC and PMSM motors benefits from the Cortex-M4F's hardware single-precision FPU, which executes Park/Clarke transforms in a single cycle on the ATSAME51J20A-AU. The MCU's PWM timers, 12-bit ADC with up to 1 MSPS, and quadrature encoder interfaces are tightly coupled through the Event System, allowing sub-microsecond current-loop latency. The 1 MB Flash stores both the FOC algorithm and a GUI configuration block for field tuning.
Direkomendasikan
Medical Instrumentation Front-End
The Cortex-M4F core, hardware AES, and 16-bit sigma-delta ADC peripherals make the ATSAME51J20A-AU suitable for medical instrumentation front-ends such as blood-pressure monitors and pulse oximeters where deterministic DSP filtering of physiological signals is required. The hardware crypto accelerator protects patient data at rest without slowing the DSP pipeline, and the wide 1.71-3.63 V supply range supports both battery and USB-powered form factors. The 256 KB SRAM buffers real-time waveform displays while background tasks transmit results.
Direkomendasikan
Connected IoT Edge Node with OTA Firmware Update
For connected IoT edge nodes, the ATSAME51J20A-AU's dual-panel Flash with ECC supports live read-while-write operation, enabling over-the-air (OTA) firmware updates without taking the device offline. The USB 2.0 Full-Speed port provides an alternate boot path for recovery, and the CAN-FD controller bridges industrial fieldbus traffic. The 120 MHz Cortex-M4F can run TLS 1.3 handshake in under 200 ms with the on-chip AES accelerator, while 256 KB SRAM accommodates TLS buffers plus the application stack.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk ATSAME51J20A-AU — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | ATSAME51J19A-AU | ATSAMD51J20A-AUT-EFP | ATSAMD51N20A-AU |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) | 100-pin TQFP (mapped subset) |
| Core | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz |
| Flash | 1 MB dual-panel w/ ECC | 512 KB dual-panel w/ ECC | 1 MB dual-panel w/ ECC | 1 MB dual-panel w/ ECC |
| SRAM | 256 KB | 256 KB | 256 KB | 256 KB |
| USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Hi-Speed | USB 2.0 Hi-Speed |
| CAN-FD | Yes | Yes | No (CAN 2.0B only) | No (CAN 2.0B only) |
| Operating Voltage | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V |
Diferensiator Kunci
- Dual-panel Flash with ECC vs single-panel Flash (vsATSAME51J19A-AU)
- Integrated CAN-FD controllers (vsATSAMD51J20A-AUT-EFP)
- Industrial temperature range and 1 MB Flash (vsATSAMD51N20A-AU)
Catatan Desain
Place a 4.7 uF ceramic decoupling capacitor close to each VDD pin and a 0.1 uF capacitor near the MCU's high-speed logic. The 1.71 V to 3.63 V operating range allows direct connection to a single Li-Ion cell or a 3.3 V LDO; choose an LDO with sub-1 mV RMS noise to avoid degrading the on-chip 16-bit sigma-delta ADC noise floor.
Keep the SWDIO and SWCLK traces shorter than 50 mm and route them over a continuous ground plane to prevent debug-session dropouts. For USB Full-Speed, place the 22 ohm series resistors and 47 pF capacitor to ground on D+ and D- within 8 mm of the MCU pins to meet USB 2.0 signal-integrity masks.
Dual-panel Flash read-while-write requires the application image to leave one bank untouched during OTA updates; do not map both banks to the same application. The SERCOM peripheral pads are multiplexed through the PORT mux - confirm the pin-assignment table in the datasheet before finalizing the schematic, as the same SERCOM can be remapped to alternate pads.
Informasi Konformitas
Industrial -40C to +85C temperature grade per Microchip ordering code 'AU' suffix. Not AEC-Q100 qualified - choose ATSAMxE51J20A-AUT-EFP variant for automotive designs.
