ATSAME51J20A-MU-EFP - 120MHz Cortex-M4F MCU 1MB Flash | Microchip
MPN: ATSAME51J20A-MU-EFP ✓ Hoạt độngATSAME51J20A-MU-EFP Tóm tắt
A microcontroller (MCU) is a single-chip computer that combines a processor core, program and data memory, peripherals, and I/O on one die. The ARM Cortex-M4F core is a mainstream 32-bit processor family augmented by a single-precision FPU and DSP extensions, designed for deterministic real-time control. SAM E51 microcontrollers sit inside the broader hierarchy: ARM Cortex-M -> 32-bit MCU -> embedded microcontroller -> semiconductor. SAME51 also features FPU and DSP extensions that accelerate floating-point math in motor control and signal processing code.
Key specifications include 120 MHz core clock, 1 MB dual-panel Flash with ECC, 256 KB SRAM, and a 64-pin VQFN package with 9x9 mm body and an exposed thermal pad. The device integrates a 12-bit ADC, DAC, SERCOM peripherals, USB 2.0 Full-Speed with on-chip PHY, CAN-FD, and a 2-channel 16-bit timer/counter for PWM generation. Integrated SD/MMC host controller and I2S audio interfaces enable storage and digital audio applications.
Architecturally, the SAM E51 uses a multi-AHB bus matrix with separate code and system buses, allowing simultaneous Flash fetch and DMA transfers without contention. Error-Correction Code on Flash and SRAM improves reliability in industrial environments. The device operates from 1.71V to 3.6V and includes an on-chip voltage regulator, POR, and brown-out detector.
Typical applications include industrial control and Human-Machine Interface (HMI) panels, low-cost motor drives (BLDC, FOC, stepper), IoT edge nodes with USB and CAN connectivity, and consumer devices requiring graphical LCD or audio playback. Its wide peripheral set also suits home automation gateways and Building Automation controllers.
When designing with this MCU, place at least four 100 nF decoupling capacitors near the supply pins, plus a bulk 4.7 uF on VDDIN, and solder the exposed thermal pad with multiple thermal vias to the ground plane for thermal dissipation. Use the SAME51 header file and the MPLAB Harmony 3 framework to configure SERCOM, ADC, and timer peripherals, which avoids register-level bugs.
This page consolidates distributor pricing, verified drop-in alternatives, and design notes not typically found in the manufacturer datasheet, helping procurement and firmware teams make informed decisions for production.
Bộ thay thế dễ dàng lắp đặt cho ATSAME51J20A-MU-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 ATSAME51J20A-MU-EFP (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Voltage, CAN, USB.
ATSAME51J19A-MU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J20A-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J20A-AUT-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J19A-MUT-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J19A-AUT-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51G19A-MU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J20A-MU-EFP Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M4F with FPU and DSP extensions |
| Core Clock Speed | 120 MHz |
| Program Memory | 1 MB dual-panel Flash with ECC |
| SRAM | 256 KB |
| Operating Voltage | 1.71 V to 3.6 V |
| Hộp | 64-pin VQFN (9x9 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Supply Voltage (VDDIN) | 3.3 V typical |
| USB | USB 2.0 Full-Speed Device/Host with on-chip PHY |
| CAN | CAN-FD |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
Hướng dẫn cấu hình chân ATSAME51J20A-MU-EFP 64-pin vqfn (9x9 mm) with exposed pad
Cấu hình chân cho ATSAME51J20A-MU-EFP (64-pin vqfn (9x9 mm) with exposed pad gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho ATSAME51J20A-MU-EFP.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ATSAME51J20A-MU-EFP phù hợp cho 6 Áp dụngs: Industrial Human-Machine Interface (HMI) Panels, BLDC and FOC Motor Control, USB-Connected IoT Edge Devices, Building Automation and HVAC Controllers, Consumer Audio Products, CAN-FD Automotive ECUs.
Industrial Human-Machine Interface (HMI) Panels
The ATSAME51J20A-MU-EFP drives industrial HMI panels using its 120 MHz Cortex-M4F core and 1 MB Flash to render graphics, manage touch input, and run communication stacks. The integrated USB Full-Speed and CAN-FD peripherals connect directly to industrial controllers without external transceivers, while 256 KB SRAM holds framebuffers and protocol buffers. The 1.71-3.6V supply range tolerates 24V industrial rails stepped down with a switching regulator. Typical HMI tasks - parsing Modbus TCP, debouncing capacitive touch, and animating icons - consume less than 60% of CPU, leaving headroom for predictive-maintenance algorithms.
Được đề xuất
BLDC and FOC Motor Control
The ATSAME51J20A-MU-EFP is well-suited for sensorless BLDC and Field-Oriented Control (FOC) motor drives thanks to dedicated Timer/Counter for Control (TCC) modules with complementary PWM outputs and dead-time insertion. The Cortex-M4F core executes FOC math at 120 MHz with hardware floating point, closing current loops well under 10 microseconds. Its 12-bit ADC synchronizes with PWM for precise current sampling, and the integrated op-amps (where present on the family) reduce external analog components. Designers typically pair the MCU with a 3-phase gate driver like the MCP8024 to drive MOSFET bridges up to several hundred watts.
Được đề xuất
USB-Connected IoT Edge Devices
The ATSAME51J20A-MU-EFP serves USB-connected IoT edge nodes, leveraging its USB 2.0 Full-Speed port with on-chip PHY to communicate with a host without external transceivers. The 120 MHz Cortex-M4F processes sensor data and runs encryption (AES via crypto accelerator on the family) before forwarding to the host. The 1 MB Flash stores both application and bootloader, supporting dual-bank live firmware updates critical for deployed edge nodes. With industrial temperature range and ECC memory, the MCU is a dependable bridge between local sensors and USB-attached gateways.
Được đề xuất
Building Automation and HVAC Controllers
In building automation controllers, the ATSAME51J20A-MU-EFP handles HVAC sequences with multiple temperature sensors, manages Modbus or BACnet over RS-485, and drives relay outputs. The Cortex-M4F executes complex control algorithms while CAN-FD connects to other building subsystems like elevators or access control. With 256 KB SRAM, it can buffer multiple communication transactions in parallel. The wide 1.71-3.6V operating range handles power-supply fluctuations common in long cable runs of building networks, and the dual-bank Flash enables safe field firmware upgrades.
Được đề xuất
Consumer Audio Products
The ATSAME51J20A-MU-EFP powers consumer audio products, decoding audio from SD cards or USB and outputting via I2S to a DAC. The Cortex-M4F's DSP extensions accelerate MP3/AAC decoding and equalizer computations, while the 256 KB SRAM buffers audio frames without dropouts. The integrated USB device port allows easy firmware updates and HID control from a host PC. The wide operating voltage range supports both battery-powered and mains-powered designs, and the small 64-pin VQFN package fits into compact portable enclosures.
Được đề xuất
CAN-FD Automotive ECUs
The ATSAME51J20A-MU-EFP serves CAN-FD-enabled automotive Electronic Control Units, integrating the CAN-FD controller for high-bandwidth vehicle network communication. For AEC-Q100 qualified deployments, the ATSAME51J20A-AUT-EFP variant is the drop-in replacement with automotive qualification. The 1 MB dual-bank Flash supports ASIL-relevant firmware partitioning and live updates, while ECC memory detects bit flips from vehicle EMI. The 120 MHz core with FPU handles automotive sensor fusion and diagnostics in real time, making this MCU a reliable choice for body and chassis ECUs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME51J20A-MU-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 | ATSAME51J19A-MU-EFP | ATSAME51J20A-MU | ATSAME51J20A-AUT-EFP | ATSAME51G19A-MU-EFP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-64 (9x9 mm) | VQFN-64 (9x9 mm) | VQFN-64 (9x9 mm) | VQFN-64 (9x9 mm) | VQFN-64 (9x9 mm) |
| Core | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz |
| Flash Memory | 1 MB | 512 KB | 1 MB | 1 MB | 512 KB |
| SRAM | 256 KB | 192 KB | 256 KB | 256 KB | 192 KB |
| Operating Voltage | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V |
| AEC-Q100 Qualified | No | No | No | Yes | No |
| Packaging | Tray | Tray | Tray | Tape and Reel | Tray |
Bảo phân biệt quan trọng
- 1 MB dual-bank Flash with ECC (vsATSAME51J19A-MU-EFP)
- AEC-Q100 automotive qualification option (vsATSAME51J20A-MU)
- J-series peripheral set vs G-series (vsATSAME51G19A-MU-EFP)
Ghi chú thiết kế
Place at least four 100 nF decoupling capacitors close to the VDD pins, plus a single bulk 4.7 uF ceramic capacitor on VDDIN. The exposed thermal pad under the VQFN package must be soldered to the PCB ground plane with multiple thermal vias (typically 9 in a 3x3 array, 0.3 mm diameter) to dissipate power and provide a low-impedance ground return. Estimated: at 120 MHz full operation with USB active, total supply current can reach 80 mA - the bulk cap prevents voltage droop during USB suspend/resume transitions.
Do not enable dual-bank Flash until the bootloader is verified, because misconfigured bank switching can lock the device. Use the SAM-BA bootloader or Atmel-ICE for initial programming before locking the security bit. Ensure the NVMCTRL (Non-Volatile Memory Controller) configuration matches the chosen row size (typically 256 bytes for SAME51), otherwise Flash writes will silently fail. Estimated: programming failures due to incorrect row size cost hours of debug time.
Route the 32 kHz crystal traces symmetrically with short lengths and keep them away from switching signals to minimize stray capacitance, which detunes the low-frequency oscillator. The HS USB DP/DM traces must be 90 ohm differential with no stubs, and route them on the top layer directly above a continuous ground pour. Estimated: USB signal integrity issues commonly trace back to poor DP/DM impedance control rather than MCU silicon problems.
Thông tin tuân thủ
RoHS compliant per distributor listings. Standard variant is not AEC-Q100 qualified - select ATSAME51J20A-AUT-EFP for automotive. Halogen-free status not explicitly stated in web data.
