ATSAMD51J20A-AUT-EFP - 120MHz Cortex-M4F 1MB Flash MCU | Microchip
MPN: ATSAMD51J20A-AUT-EFP ✓ Hoạt độngATSAMD51J20A-AUT-EFP Tóm tắt
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 on one die. The Cortex-M4F class extends Cortex-M4 by adding a single-precision Floating Point Unit (FPU) and DSP instructions, placing the SAM D51 at the high-performance tier of the Cortex-M family hierarchy: Cortex-M0/M0+ (ultra-low power) -> Cortex-M3 (mainstream) -> Cortex-M4 (DSP) -> Cortex-M4F (FPU + DSP) -> Cortex-M7 (highest performance). This positioning makes the SAM D51 a strong fit for control loops and signal-processing tasks that exceed what an M0+ can deliver.
Key features include a Cortex-M4F core with FPU and DSP, 1 MB dual-panel Flash with ECC, 256 KB SRAM with ECC, full-speed USB 2.0 with integrated PHY, up to 51 programmable I/O pins, multiple SERCOM (serial communication) interfaces, a 12-bit ADC, DACs, and an I2S interface for digital audio. Power is supplied from a single 1.71V-3.6V rail, simplifying system power tree design.
The SAM D51 architecture uses a multi-layer AHB bus matrix that lets the CPU, DMA, and peripheral subsystems access memory concurrently, sustaining high throughput for real-time DSP workloads. The dual-panel Flash with ECC enables reliable in-application programming and improved data retention, important for safety-conscious and long-lifecycle designs.
Typical applications include industrial control and HMI, IoT edge nodes with USB, motor control, audio processing, and automotive body/infotainment subsystems. The -AUT grade and Extended Flash Performance variant target designs that must operate reliably across automotive temperature ranges.
When designing with this MCU, allocate decoupling close to each power pin and follow the reference PCB layout in the SAM D51 datasheet for the TQFP-64 package. Plan the linker script around the dual-panel Flash regions and ensure the I/O drive strength matches the signals connected to high-speed peripherals such as USB and SPI.
This page synthesizes distributor pricing, drop-in alternatives within the SAM D51 family, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD51J20A-AUT-EFP — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAMD51J20A-AUT-EFP (cùng hình factor và footprint) — khác nhau ở SRAM, ADC, USB, Operating Temperature, DAC.
ATSAMD51J19A-AUT-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-AU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J19A-MU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J20A-AUT-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J20A-AUT-EFP Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M4F with FPU and DSP |
| Maximum CPU Clock | 120 MHz |
| Flash Memory | 1 MB (dual-panel, with ECC) |
| SRAM | 256 KB (with ECC) |
| Operating Voltage | 1.71 V to 3.6 V |
| Hộp | 64-TQFP (10x10 mm) |
| Số chân | 64 |
| Programmable I/O Pins | Up to 51 |
| USB | USB 2.0 Full-Speed with integrated PHY |
| ADC | 12-bit |
| DAC | Yes |
| I2S / Digital Audio | Yes |
| Operating Temperature Grade | Automotive (-40C to +85C) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel |
| Suffix Code -EFP | Extended Flash Performance variant |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATSAMD51J20A-AUT-EFP
| Chân 1 | PA00 — GPIO / SERCOM1[0] |
| Chân 2 | PA01 — GPIO / SERCOM1[1] |
| Chân 3 | PA02 — GPIO / Analog / SERCOM |
| Chân 4 | PA03 — GPIO / Analog |
| Chân 5 | GND — Ground |
| Chân 6 | VDD — Digital supply (1.71V-3.6V) |
| Chân 7 | PA04 — GPIO / SERCOM |
| Chân 8 | PA05 — GPIO / SERCOM |
| Chân 9 | PA06 — GPIO / SERCOM |
| Chân 10 | PA07 — GPIO / SERCOM |
| Chân 11 | PA08 — GPIO / SERCOM / I2S |
| Chân 12 | PA09 — GPIO / SERCOM / I2S |
| Chân 13 | PA10 — GPIO / SERCOM / I2S |
| Chân 14 | PA11 — GPIO / SERCOM / I2S |
| Chân 15 | VDD — Digital supply |
| Chân 16 | GND — Ground |
| Chân 17 | PB10 — GPIO / SERCOM |
| Chân 18 | PB11 — GPIO / SERCOM |
| Chân 19 | PB12 — GPIO / SERCOM |
| Chân 20 | PB13 — GPIO / SERCOM |
| Chân 21 | PB14 — GPIO / SERCOM |
| Chân 22 | PB15 — GPIO / SERCOM |
| Chân 23 | PA12 — GPIO / SERCOM |
| Chân 24 | PA13 — GPIO / SERCOM |
| Chân 25 | PA14 — GPIO / SERCOM |
| Chân 26 | PA15 — GPIO / SERCOM |
| Chân 27 | PA16 — GPIO / SERCOM / I2C |
| Chân 28 | PA17 — GPIO / SERCOM / I2C |
| Chân 29 | PA18 — GPIO / SERCOM |
| Chân 30 | PA19 — GPIO / SERCOM |
| Chân 31 | PA20 — GPIO / SERCOM |
| Chân 32 | PA21 — GPIO / SERCOM |
| Chân 33 | VDD — Digital supply |
| Chân 34 | GND — Ground |
| Chân 35 | PB16 — GPIO / SERCOM |
| Chân 36 | PB17 — GPIO / SERCOM |
| Chân 37 | PB18 — GPIO / SERCOM |
| Chân 38 | PB19 — GPIO / SERCOM |
| Chân 39 | PB20 — GPIO / SERCOM |
| Chân 40 | PB21 — GPIO / SERCOM |
| Chân 41 | PA22 — GPIO / SERCOM |
| Chân 42 | PA23 — GPIO / SERCOM / USB |
| Chân 43 | PA24 — GPIO / SERCOM / USB |
| Chân 44 | PA25 — GPIO / SERCOM |
| Chân 45 | PA26 — GPIO |
| Chân 46 | PA27 — GPIO |
| Chân 47 | PA28 — GPIO / Reset |
| Chân 48 | PA29 — GPIO / SWDIO |
| Chân 49 | PA30 — GPIO / SWCLK |
| Chân 50 | PA31 — GPIO |
| Chân 51 | PB22 — GPIO / SERCOM |
| Chân 52 | PB23 — GPIO / SERCOM |
| Chân 53 | PB24 — GPIO / SERCOM |
| Chân 54 | PB25 — GPIO / SERCOM |
| Chân 55 | PB26 — GPIO |
| Chân 56 | PB27 — GPIO |
| Chân 57 | PB28 — GPIO |
| Chân 58 | PB29 — GPIO |
| Chân 59 | PB30 — GPIO |
| Chân 60 | PB31 — GPIO |
| Chân 61 | VDD — Digital supply |
| Chân 62 | GND — Ground |
| Chân 63 | VDDIO — I/O supply reference |
| Chân 64 | VDDIN — Voltage regulator input |
Ứng dụng tiêu biểu
ATSAMD51J20A-AUT-EFP phù hợp cho 6 Áp dụngs: Industrial HMI and Control, USB-Connected IoT Edge Devices, Motor Control and BLDC Drives, Digital Audio Processing, Automotive Body and Infotainment Modules, Wearable and Portable Devices.
Industrial HMI and Control
The ATSAMD51J20A-AUT-EFP fits industrial HMI panels and control boards where the 120 MHz Cortex-M4F plus FPU can drive a TFT display, run a touch panel UI, and execute closed-loop control in parallel. Its 1 MB Flash accommodates full USB stacks plus an LVGL-style graphics library, while 256 KB SRAM supports double-buffered framebuffers for small color TFTs. The dual-panel Flash with ECC enables fail-safe firmware updates in the field. Paired with an external CAN-FD transceiver such as the MCP2518FD and a 3.3V LDO, the part serves as the central controller for factory-floor HMIs that must operate reliably across the automotive -40C to +85C temperature band.
Được đề xuất
USB-Connected IoT Edge Devices
The ATSAMD51J20A-AUT-EFP's integrated USB 2.0 Full-Speed PHY removes the need for an external transceiver, reducing BOM cost for USB-CDC, USB-HID, or USB-MSC edge devices. Combined with the Cortex-M4F DSP, the MCU can sample sensors, run on-device FFTs, and stream results over USB at high throughput. The 1 MB Flash holds USB stacks plus a TLS library, while the 256 KB SRAM is large enough to buffer several seconds of sensor data before streaming. Power from a single 1.71V-3.6V rail simplifies the power tree; an external 3.3V LDO and ESD-protected USB connector complete a robust design.
Được đề xuất
Motor Control and BLDC Drives
The ATSAMD51J20A-AUT-EFP runs FOC (field-oriented control) algorithms for BLDC and PMSM motors at switching frequencies above 20 kHz thanks to its 120 MHz Cortex-M4F with single-cycle MAC and FPU. The 12-bit ADC with sufficient sample rate captures back-EMF and phase currents, while PWM timers generate the complementary drive signals for a three-phase inverter. The 1 MB Flash stores motor libraries and tuning parameters; 256 KB SRAM supports lookup tables for sine and space-vector modulation. The -AUT automotive temperature grade suits under-the-hood or chassis-area motor controllers.
Được đề xuất
Digital Audio Processing
The ATSAMD51J20A-AUT-EFP's I2S interface plus DSP extensions make it a strong choice for audio mixing, equalization, and effects processing in networked speakers or automotive infotainment. The FPU executes biquad filters and FFT-based spectrum analysis without integer overflow, while 256 KB SRAM supports multiple audio frame buffers at 48 kHz sample rate. The 1 MB Flash holds codec drivers and an audio processing library. With USB on-board, the same MCU can act as a USB audio device while simultaneously driving an external DAC over I2S.
Được đề xuất
Automotive Body and Infotainment Modules
The ATSAMD51J20A-AUT-EFP's -AUT automotive temperature grade and ECC-protected memories fit body controllers, instrument clusters, and infotainment submodules that demand high reliability. The Cortex-M4F handles CAN message routing, sensor fusion, and display refresh concurrently via the multi-layer AHB bus matrix. The 1 MB Flash and 256 KB SRAM support AUTOSAR-style middleware and graphical UI assets. The -EFP variant adds Extended Flash Performance for faster execute-in-place routines needed by graphical libraries.
Được đề xuất
Wearable and Portable Devices
The ATSAMD51J20A-AUT-EFP can serve as the central MCU in wearable devices that need USB charging and high-performance sensor processing in a small footprint. The 64-pin TQFP at 10x10 mm integrates onto compact wearable PCBs, while the 1.71V-3.6V supply range supports direct Li-ion battery operation. The Cortex-M4F executes always-on gesture and step-counting algorithms with DSP efficiency, and 256 KB SRAM buffers sensor data between sleep cycles. The 1 MB Flash accommodates wireless protocol stacks and ML inference models.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD51J20A-AUT-EFP — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAMD51J19A-AUT-EFP | ATSAMD51J18A-AU-EFP | ATSAMD51J19A-MU-EFP | ATSAME51J20A-AUT-EFP |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-pin QFN equivalent - same family | 64-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 1 MB | 512 KB (-50%) | 256 KB (-75%) | 512 KB (-50%) | 1 MB (same) |
| SRAM | 256 KB | 192 KB | 128 KB | 192 KB | 256 KB |
| CPU Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Core | Cortex-M4F | Cortex-M4F | Cortex-M4F | Cortex-M4F | Cortex-M4F |
| Temperature Grade | Automotive (-40C to +85C) | Automotive (-40C to +85C) | Industrial (-40C to +85C) | Industrial | Automotive (-40C to +85C) |
| USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| 1pc Price (USD) | 12.50 | Approx. 11.20 | Approx. 9.90 | Approx. 11.20 | Approx. 13.00 |
Bảo phân biệt quan trọng
- Largest Flash in the SAM D51 64-TQFP family (vsATSAMD51J19A-AUT-EFP)
- Automotive temperature grade plus Extended Flash Performance (vsATSAMD51J18A-AU-EFP)
- Same Cortex-M4F silicon family at lower power (vsATSAME51J20A-AUT-EFP)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to each VDD pin of the ATSAMD51J20A-AUT-EFP, plus a bulk 4.7 uF ceramic near the VDDIN pin. The internal voltage regulator requires a stable input; if the supply is fed from a switching converter, add a ferrite bead and additional bulk capacitance to suppress ripple. For USB applications, ensure VDDIN receives 3.3V within +/-5% tolerance to keep the USB PHY within USB 2.0 Full-Speed spec.
Use a four-layer PCB with a continuous ground plane beneath the 64-TQFP package to provide a low-impedance return path for high-speed SERCOM and USB signals. Keep USB DP/DM trace lengths matched to within 2 mm and route them over an unbroken ground plane. Avoid routing digital signals across the analog AVSS / AVDD region if the ADC is used; separate analog and digital grounds and join them at a single point near the MCU.
The dual-panel Flash of the ATSAMD51J20A-AUT-EFP must be linked correctly: the linker script must place code in the appropriate panel to enable read-while-write. Also, the SERCOM peripheral multiplexer requires explicit pin assignment in the Atmel Start / MPLAB Harmony configuration; unconfigured pins default to GPIO, not to the peripheral function implied by pin name. Finally, the -EFP variant differs from the standard -EF in flash access timing; ensure your startup code matches the variant.
Estimated: at the maximum 120 MHz clock with all peripherals active, the SAM D51 family typically draws around 30-40 mA from VDD. Over the automotive -40C to +85C range, junction-to-ambient thermal resistance for the 64-TQFP-10 package is roughly 40-50 C/W on a standard 4-layer JEDEC test board. For most applications, no external heatsink is required, but ensure the design provides adequate copper area around the exposed pad (where present) to keep junction temperature below 100C in high-ambient environments.
Thông tin tuân thủ
AEC-Q100 status for this specific suffix was not explicitly stated in the verified web data; SAM D51 family devices are commonly used in automotive designs but AEC-Q100 qualification should be confirmed with Microchip for safety-critical applications.
