ATSAME51J20A-MU - 120MHz Cortex-M4F MCU, 1MB Flash, 64-VQFN | Microchip
MPN: ATSAME51J20A-MU ✓ Hoạt độngATSAME51J20A-MU Tóm tắt
What is a Cortex-M4F microcontroller? A Cortex-M4F MCU is a 32-bit processor core based on the ARMv7-M architecture with a hardware single-precision Floating Point Unit and a DSP instruction set extension. Within the embedded hierarchy it sits between Cortex-M3 (no FPU) and Cortex-M7 (higher performance, double-precision FPU), and it serves as the workhorse core for industrial control, motor drives, audio processing, and connected IoT endpoints where deterministic interrupt response and floating-point math are both required.
Key features of the ATSAME51J20A-MU include a 120 MHz core with 2.14 CoreMark/MHz efficiency, 1 MB dual-panel Flash supporting live in-field updates, 256 KB SRAM, a high-speed 16-channel 1 Msps 12-bit ADC, two 12-bit DACs, USB 2.0 Full-Speed with embedded Host, a CAN-FD controller, SERCOM (configurable serial) interfaces, and an on-board crypto accelerator supporting AES, SHA and TRNG. The integrated 32-channel EVENT system and SmartEEPROM emulation reduce software overhead.
Architecturally the device is built around a multi-bus AHB matrix with dedicated SRAM and Flash ports, enabling zero-wait-state execution from Flash at full clock speed. The peripheral DMA controller (DMAC) and dedicated crypto DMA relieve the core from data-movement tasks, and the dual-panel Flash allows read-while-write firmware upgrades without external memory. The 9x9 mm 64-VQFN with exposed thermal pad supports industrial ambient operation from -40 °C to +85 °C.
Typical applications include industrial control and Human-Machine Interface (HMI) panels, USB-to-CAN bridges, sensor aggregation nodes, motor control low-end FOC loops, audio front-ends, and connected IoT edge nodes using the integrated crypto block. With USB, CAN-FD, and SERCOM, the same silicon serves as a protocol-conversion gateway between legacy RS-485 and modern fieldbus networks.
Designers should pay attention to decoupling: place one 100 nF X7R plus one 10 µF bulk capacitor on each VDD/VDDIO pin pair within 3 mm of the pad, and stitch the exposed pad with at least nine thermal vias to a continuous inner-plane ground for optimal 120 MHz operation. Because the SAM E51 family is footprint-compatible with the SAM D51 family, you can scale memory between 256 KB and 1 MB without PCB rework.
This page synthesizes distributor pricing, drop-in alternatives from the same SAM E5x family, and practical PCB layout notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ATSAME51J20A-MU — 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 (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, DAC, SRAM.
ATSAME51J20A-MU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J19A-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J18A-MU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD51J20A-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME53J20A-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51N20A-AU-EFP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAME51J20A-MU Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M4F with single-precision FPU |
| Tần số xung maksimum | 120 MHz |
| CoreMark Efficiency | 2.14 CoreMark/MHz |
| Flash Memory | 1 MB (1M x 8) dual-panel with ECC |
| SRAM | 256 KB |
| ADC | 16-channel, 12-bit, 1 Msps |
| DAC | 2 x 12-bit |
| USB | USB 2.0 Full-Speed with embedded Host |
| CAN | CAN-FD controller |
| Crypto Accelerator | AES, SHA, TRNG |
| SERCOM | Configurable serial interfaces |
| EVENT System | 32 channels |
| Operating Voltage | 3.3 V |
| Hộp | 64-VQFN (9x9 mm) with exposed pad |
| Nhiệt độ hoạt động | -40 °C to +85 °C |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân ATSAME51J20A-MU
| Chân 1 | VDDIO — Digital I/O supply |
| Chân 2 | PA00 — GPIO / SERCOM1[0] |
| Chân 3 | PA01 — GPIO / SERCOM1[1] |
| Chân 4 | PA02 — GPIO / ADC[0] |
| Chân 5 | PA03 — GPIO / ADC[1] |
| Chân 6 | PA04 — GPIO / VREFA |
| Chân 7 | PA05 — GPIO |
| Chân 8 | PA06 — GPIO |
| Chân 9 | PA07 — GPIO |
| Chân 10 | VDDIO — Digital I/O supply |
| Chân 11 | VSS — Ground |
| Chân 12 | PA08 — GPIO / SERCOM0[0] |
| Chân 13 | PA09 — GPIO / SERCOM0[1] |
| Chân 14 | PA10 — GPIO / SERCOM2[2] |
| Chân 15 | PA11 — GPIO / SERCOM2[3] |
| Chân 16 | PA12 — GPIO / SERCOM4[0] |
| Chân 17 | PA13 — GPIO / SERCOM4[1] |
| Chân 18 | PA14 — GPIO |
| Chân 19 | PA15 — GPIO |
| Chân 20 | PA16 — GPIO / SERCOM1[0] |
| Chân 21 | PA17 — GPIO / SERCOM1[1] |
| Chân 22 | PA18 — GPIO |
| Chân 23 | PA19 — GPIO |
| Chân 24 | VDDIO — Digital I/O supply |
| Chân 25 | PA20 — GPIO |
| Chân 26 | PA21 — GPIO |
| Chân 27 | PA22 — GPIO |
| Chân 28 | PA23 — GPIO |
| Chân 29 | PA24 — GPIO / USB_DM |
| Chân 30 | PA25 — GPIO / USB_DP |
| Chân 31 | PA26 — GPIO |
| Chân 32 | PA27 — GPIO |
| Chân 33 | PA28 — GPIO |
| Chân 34 | PA29 — GPIO |
| Chân 35 | PA30 — GPIO |
| Chân 36 | PA31 — GPIO |
| Chân 37 | PB00 — GPIO |
| Chân 38 | PB01 — GPIO |
| Chân 39 | PB02 — GPIO / SERCOM5[0] |
| Chân 40 | PB03 — GPIO / SERCOM5[1] |
| Chân 41 | PB04 — GPIO / SERCOM3[0] |
| Chân 42 | PB05 — GPIO / SERCOM3[1] |
| Chân 43 | PB06 — GPIO |
| Chân 44 | PB07 — GPIO |
| Chân 45 | PB08 — GPIO |
| Chân 46 | PB09 — GPIO |
| Chân 47 | PB10 — GPIO |
| Chân 48 | PB11 — GPIO |
| Chân 49 | PB12 — GPIO |
| Chân 50 | PB13 — GPIO |
| Chân 51 | PB14 — GPIO |
| Chân 52 | PB15 — GPIO |
| Chân 53 | PC00 — GPIO |
| Chân 54 | PC01 — GPIO |
| Chân 55 | PC02 — GPIO |
| Chân 56 | PC03 — GPIO |
| Chân 57 | PC04 — GPIO |
| Chân 58 | PC05 — GPIO |
| Chân 59 | PC06 — GPIO |
| Chân 60 | PC07 — GPIO |
| Chân 61 | VDDIO — Digital I/O supply |
| Chân 62 | VSS — Ground |
| Chân 63 | VDD — Core supply |
| Chân 64 | RESETN — Reset (active low) |
Ứng dụng tiêu biểu
ATSAME51J20A-MU phù hợp cho 6 Áp dụngs: Industrial HMI Control Panels, USB-to-CAN Bridge Dongles, Sensor Aggregation Edge Nodes, Low-End FOC Motor Control, Audio Front-End Processing, Connected IoT Edge Nodes with Hardware Crypto.
Industrial HMI Control Panels
The ATSAME51J20A-MU's 120 MHz Cortex-M4F core, 1 MB dual-panel Flash, and 16-channel 12-bit ADC make it well matched to industrial Human-Machine Interface (HMI) panels that combine a touchscreen controller, multi-channel sensor readout, and CAN-FD fieldbus. The hardware FPU accelerates GUI rendering math and FFT-based signal conditioning on the same MCU. With USB, CAN-FD, and SERCOM, the panel can act as a protocol-conversion gateway between legacy RS-485 and modern fieldbus networks without an external bridge IC.
Được đề xuất
USB-to-CAN Bridge Dongles
The ATSAME51J20A-MU integrates both USB 2.0 Full-Speed with embedded Host and a CAN-FD controller, which lets one IC implement a complete USB-to-CAN bridge dongle for automotive diagnostics and industrial fieldbus tools. The 256 KB SRAM buffers high-throughput CAN-FD frames while USB traffic is serviced, and the hardware crypto block can authenticate diagnostic sessions. Compared to a two-chip USB-plus-CAN design, the SAM E51 reduces PCB area and BOM by at least one MCU plus a transceiver.
Được đề xuất
Sensor Aggregation Edge Nodes
For industrial IoT edge nodes aggregating multiple analog and digital sensors, the ATSAME51J20A-MU provides 16 channels of 12-bit ADC sampling at 1 Msps, plus SERCOM channels for I2C/SPI sensor expansion. The 32-channel EVENT system and DMAC offload routine data-movement tasks, freeing the Cortex-M4F for higher-level aggregation and edge analytics. With 1 MB Flash, the node can host a full TLS stack plus device-management firmware without external memory.
Được đề xuất
Low-End FOC Motor Control
Low-end Field-Oriented Control (FOC) loops for fans, pumps, and small BLDC drives fit comfortably in the ATSAME51J20A-MU thanks to its 120 MHz Cortex-M4F with hardware FPU and DSP extensions. The 16-channel 12-bit ADC samples three-phase currents simultaneously with hardware oversampling, and the EVENT system synchronizes ADC triggers to PWM edges with deterministic latency. Designers can run 8 kHz FOC loops while leaving CPU headroom for CAN-FD telemetry and USB commissioning on the same die.
Được đề xuất
Audio Front-End Processing
The ATSAME51J20A-MU's two 12-bit DACs, 120 MHz Cortex-M4F DSP extensions, and 256 KB SRAM are sufficient for audio front-end processing such as beamforming pre-processing, sample-rate conversion, and basic DSP filtering. The hardware FPU accelerates biquad and FFT routines while the 16-channel ADC handles multi-mic capture. Combined with the 1 MB Flash budget, designers can host full audio-pipeline firmware with comfortable headroom for future feature expansion.
Được đề xuất
Connected IoT Edge Nodes with Hardware Crypto
Connected IoT edge nodes benefit from the ATSAME51J20A-MU's hardware crypto accelerator (AES, SHA, TRNG), which offloads TLS handshake and authentication without burdening the Cortex-M4F core. The dual-panel Flash supports secure OTA firmware updates with rollback to the previous image if a new image fails to boot. USB, CAN-FD, and SERCOM give designers a single-chip secure gateway for industrial or building-automation deployments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME51J20A-MU — 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 | ATSAME51J20A-MU-EFP | ATSAME51J19A-MU | ATSAMD51J20A-MU | ATSAME53J20A-MU |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9 mm) | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same |
| 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 | 1 MB | 512 KB | 1 MB | 1 MB |
| SRAM | 256 KB | 256 KB | 192 KB | 256 KB | 256 KB |
| Hardware Crypto | AES/SHA/TRNG | AES/SHA/TRNG | AES/SHA/TRNG | No | AES/SHA/TRNG |
| USB | FS with embedded Host | FS with embedded Host | FS with embedded Host | FS with embedded Host | HS PHY + FS with embedded Host |
| CAN | CAN-FD | CAN-FD | CAN-FD | CAN-FD | CAN-FD |
| Extended Flash Performance | No | Yes | No | No | No |
Bảo phân biệt quan trọng
- Same-family drop-in scalability between 256 KB and 1 MB Flash (vsATSAME51J19A-MU)
- Adds hardware crypto accelerator absent on SAM D51 (vsATSAMD51J20A-MU)
- Cost-down versus SAM E53 when High-Speed USB PHY is not required (vsATSAME53J20A-MU)
Ghi chú thiết kế
Decoupling: place one 100 nF X7R plus one 10 µF bulk capacitor on each VDD/VDDIO pin pair within 3 mm of the pad. The exposed thermal pad must be stitched with at least nine thermal vias to a continuous inner-plane ground for reliable 120 MHz operation across -40 °C to +85 °C.
Crystal layout: route the 12 MHz external crystal traces symmetrically and keep them short; the SAM E51's PLL multiplies this clock to 120 MHz and noisy layouts will cause jitter or PLL unlock. Keep crystal traces away from switching DC-DC nodes and digital I/O edges.
Power sequencing: VDDIO must rise no later than VDD, and the RESETN pin must be held low until both rails are stable. Failing to observe sequencing can cause latch-up on the I/O cells during cold-start; refer to the SAM E51 datasheet power-up section for the timing diagram.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product page. Industrial-grade -40 °C to +85 °C operating range; AEC-Q100 is not applicable for non-automotive SKUs.
