ATSAMD51N20A-AF - 120MHz Cortex-M4F 1MB MCU | Microchip
部品番号: ATSAMD51N20A-AF ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $10.4 | $10.40 |
| 10 | $9.31 | $93.10 |
| 100 | $8.21 | $821.00 |
| 500 | $7.51 | $3,755.00 |
| 1,000 | $6.84 | $6,840.00 |
ATSAMD51N20A-AF 概要
What is a Cortex-M4F microcontroller? A microcontroller unit (MCU) is a single-chip computer that integrates a CPU core, memory (Flash for code, SRAM for data), peripherals (timers, ADC, communication controllers), and I/O in one package. The Cortex-M4F is ARM's mainstream core with a single-precision Floating Point Unit, DSP extensions, and an MPU for memory protection. MCUs sit at the bottom of the compute hierarchy (transistor -> logic gate -> processor -> SoC -> computer) and are the backbone of every embedded system from wearables to industrial controllers.
Key features include 120 MHz core clock with FPU and DSP instructions, 1 MB dual-panel Flash supporting live in-field update with ECC, 256 KB SRAM with ECC, a full-speed USB 2.0 interface with integrated PHY, dual CAN-FD controllers, and a 12-bit 1 MSPS ADC with up to 16 channels. A high-speed 16-bit Analog Comparator, multiple SERCOM peripherals (configurable as UART/SPI/I2C), an Event System, and a TC capture/compare/PWM block round out the peripherals.
The SAM D51 architecture pairs the Cortex-M4F core with a multi-layer bus matrix and tightly-coupled SRAM to deliver deterministic interrupt response under heavy peripheral traffic. Dual-panel Flash with ECC enables live firmware swap without external memory, ideal for OTA-capable field devices requiring high reliability.
Typical applications include industrial motor control, USB-enabled human-machine interfaces, building automation gateways, and audio/signal-processing front-ends. The 100-pin TQFP footprint and extended temperature grade (suffix "F") suit through-hole-friendly prototypes and harsh-environment deployments.
When designing with this MCU, ensure the dual-panel Flash update sequence uses the proper BFB2 / BOOTPROT locking scheme, place the on-package decoupling network within 2 mm of each VDD pin pair, and route the USB DP/DM traces as a 90-ohm differential pair. The "AF" suffix denotes the 100-pin TQFP package and extended temperature grade (-40 C to +125 C).
This page synthesizes distributor pricing, drop-in alternatives within the SAM D51/E51 family, and practical design notes that go beyond the datasheet summary to support schematic and layout planning.
ドロップイン代替品: ATSAMD51N20A-AF — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATSAMD51N20A-AF （同一形状・フットプリント） — 相違点: USB, Operating Temperature, ADC, DAC, CAN.
クイック比較ツール — 並列比較する代替部品を選択:
ATSAMD51N20A-AFT
✅ ドロップイン✓ 在庫あり
$8.8 / 個
データシートを見る →ATSAMD51N20A-AU
✅ ドロップイン✓ 在庫あり
$8.49 / 個
データシートを見る →ATSAMD51N19A-AF
✅ ドロップイン✓ 在庫あり
$5.41 / 個
データシートを見る →ATSAMD51N19A-AUT-EFP
✅ ドロップイン✓ 在庫あり
$3.65 / 個
データシートを見る →ATSAME51N20A-AF
✅ ドロップイン✓ 在庫あり
$6.55 / 個
データシートを見る →ATSAMD51N20A-AF 最大定格＆電気的特性
| Core Architecture | ARM Cortex-M4F with FPU |
| Core Frequency | 120 MHz |
| Flash Memory | 1 MB (Dual-Panel, ECC) |
| SRAM | 256 KB (ECC) |
| パッケージ | 100-pin TQFP (14x14 mm) |
| 動作温度 | -40 C to +125 C (Extended) |
| 電源電圧 | 1.71 V to 3.63 V |
| ADC | 12-bit, up to 1 MSPS |
| ADC Channels | Up to 16 |
| USB | USB 2.0 Full-Speed with on-chip PHY |
| CAN | 2x CAN-FD |
| SERCOM | Configurable UART/SPI/I2C |
| Timers/TC | 16-bit, multiple channels |
| 実装タイプ | Surface Mount (TQFP) |
| RoHS ステータス | Compliant |
ATSAMD51N20A-AF 100-pin tqfp (14x14 mm) ピン配置ガイド
ATSAMD51N20A-AF (100-pin tqfp (14x14 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATSAMD51N20A-AF.
詳細は データシート をご参照ください。
主な用途
ATSAMD51N20A-AF の用途: 7 件s: Industrial Motor Control, USB Human-Machine Interface (HMI), Building Automation Gateway, Audio and Signal Processing, IoT Sensor Hub with USB-C Connectivity, Automotive CAN-FD Body Controller, Medical Patient Monitoring Sensor.
Industrial Motor Control
The ATSAMD51N20A-AF is well suited to industrial motor control drives including BLDC, PMSM, and stepper motors. Its Cortex-M4F core at 120 MHz with single-precision FPU executes field-oriented control (FOC) loops within microseconds, while the 16-bit TC capture/compare/PWM block generates center-aligned PWM up to several hundred kHz. The 1 MB dual-panel Flash supports full motor control firmware plus tuning tables, and 256 KB SRAM buffers sensor feedback. Two CAN-FD controllers integrate directly into industrial fieldbus networks. The 100-pin TQFP package and extended temperature grade (-40 C to +125 C) suit harsh factory-floor deployments. Recommended companion chips include gate drivers and current-sense amplifiers.
おすすめ
USB Human-Machine Interface (HMI)
The ATSAMD51N20A-AF's integrated USB 2.0 Full-Speed PHY with on-chip transceiver makes it ideal for USB HID devices, touch panels, and industrial HMIs. The on-chip PHY eliminates external USB components, reducing BOM cost and PCB footprint. The 120 MHz Cortex-M4F renders 800x480 TFT displays via the SERCOM-configurable SPI/QSPI interface, while the 1 MB Flash stores multiple language fonts and GUI assets. The extended temperature range supports outdoor kiosks and industrial control panels. Twin CAN-FD controllers allow the HMI to act as a bridge between USB hosts and industrial fieldbus networks. Recommended companions include TFT display drivers and USB ESD protection arrays.
おすすめ
Building Automation Gateway
The ATSAMD51N20A-AF serves as a multi-protocol gateway controller in building automation systems, bridging KNX, Modbus, BACnet, and proprietary fieldbus networks to cloud backends. Its dual CAN-FD controllers and multiple SERCOM peripherals (configurable as UART/SPI/I2C) handle concurrent fieldbus traffic. The 1 MB Flash stores protocol stacks and configuration, while 256 KB SRAM buffers message queues. The Cortex-M4F core processes encryption (TLS, AES) for secure cloud uplink at wire speed. The extended temperature grade (-40 C to +125 C) ensures reliability in unconditioned electrical rooms. Recommended companions include RS-485 transceivers and isolated power modules.
おすすめ
Audio and Signal Processing
The ATSAMD51N20A-AF excels at audio front-end and DSP tasks thanks to its Cortex-M4F with single-precision FPU and DSP extensions. At 120 MHz it processes 16-bit audio at 48 kHz with substantial headroom for FFT, filtering, and noise reduction. The 12-bit 1 MSPS ADC captures analog audio with low latency, while SERCOM peripherals drive I2S codecs. The 1 MB Flash stores DSP algorithm libraries and audio assets, while 256 KB SRAM buffers audio streams. The dual-panel Flash enables live firmware updates of audio processing pipelines without downtime. Recommended companions include low-noise audio codecs and Class-D amplifier controllers.
おすすめ
IoT Sensor Hub with USB-C Connectivity
The ATSAMD51N20A-AF is ideal for IoT sensor hubs that aggregate multiple sensor streams and present them via USB-C to a host computer. Its USB 2.0 Full-Speed interface with on-chip PHY connects directly to a USB-C port via CC logic, while multiple SERCOM peripherals run I2C/SPI sensor buses concurrently. The 12-bit ADC captures analog sensors, and the Event System enables low-power wake-up on sensor interrupts. The 1 MB Flash stores edge-processing algorithms and OTA update buffers. The 100-pin TQFP package provides ample GPIO for sensor multiplexing. Recommended companions include USB-C CC controllers and I2C sensors.
おすすめ
Automotive CAN-FD Body Controller
The ATSAMD51N20A-AF's two CAN-FD controllers and extended temperature grade (-40 C to +125 C) make it suitable for non-safety-critical automotive body controllers such as HVAC panels, seat controllers, and mirror modules. Its Cortex-M4F core runs AUTOSAR-classic application layers and CANopen stacks, while 1 MB Flash stores multiple ECU firmware images for dual-panel OTA updates. The 256 KB SRAM buffers CAN message queues under heavy network load. Note: this part is not AEC-Q100 qualified; for safety-critical ECUs, designers should select a different part or add a safety review. Recommended companions include CAN transceivers and automotive-grade voltage regulators.
おすすめ
Medical Patient Monitoring Sensor
The ATSAMD51N20A-AF powers bedside patient monitoring sensors including pulse oximetry front-ends, ECG lead-off detectors, and respiration monitors. Its 12-bit 1 MSPS ADC captures high-fidelity biosignals, while the Cortex-M4F core executes DSP filters for noise reduction and feature extraction. The 1 MB Flash stores firmware and calibration data, with dual-panel support enabling in-field firmware updates. The extended temperature range supports continuous operation in climate-controlled clinical environments. Designers should validate the design against IEC 60601-1 if targeting FDA-cleared medical devices. Recommended companions include low-noise analog front-ends and isolated power supplies.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATSAMD51N20A-AF — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ATSAMD51N20A-AFT | ATSAMD51N20A-AU | ATSAMD51N19A-AF | ATSAME51N20A-AF |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same |
| Core | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz (with crypto + Ethernet) |
| Flash | 1 MB (Dual-Panel ECC) | 1 MB | 1 MB | 512 KB (-50%) | 1 MB |
| SRAM | 256 KB (ECC) | 256 KB | 256 KB | 256 KB | 256 KB |
| Temperature Grade | Extended (-40C to +125C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Extended (-40C to +125C) |
| 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 + HS PHY |
| Packaging Media | Tray | Tape & Reel | Tray | Tray | Tray |
主な差別化要因
- Dual-panel Flash with ECC for OTA-safe firmware update （vs ATSAMD51N19A-AF)
- Extended temperature grade for harsh-environment deployments （vs ATSAMD51N20A-AU)
- Drop-in pin compatibility within SAM D51 family （vs ATSAME51N20A-AF)
設計ノート
Estimated: at 120 MHz active, VDD = 3.3 V, the ATSAMD51N20A-AF draws approximately 15-20 mA from VDDIN and an additional 5-10 mA from VDDIO depending on switching GPIO load. Place a 100 nF X7R decoupling capacitor within 2 mm of every VDD/VDDIO pin pair, plus a bulk 4.7 uF tantalum or ceramic capacitor on each supply rail. The 1.71 V to 3.63 V supply range allows direct Li-Ion battery operation but requires careful analog supply filtering for ADC accuracy.
Route the USB DP/DM traces as a 90-ohm differential pair with continuous ground reference on the layer immediately below. Keep total DP/DM length under 50 mm and avoid splits or vias in the reference plane. The 12-bit ADC inputs benefit from a dedicated ground pour isolated from digital return currents; route ADC traces perpendicular to high-frequency digital switching to minimize coupling. Place the 32.768 kHz crystal load capacitors within 1 mm of the XIN32/XOUT32 pins.
When using dual-panel Flash for OTA updates, configure the Boot Flash Row (BFB2) and NVMCTRL lockbits correctly before first firmware programming, otherwise the device will brick on first reboot if the second panel is empty. The 120 MHz operation requires the DFLL or PLL to be locked first; do not switch the system clock source until the corresponding status bit (DFLLMUL or PLLCTRL) is verified. The SERCOM peripheral pad mapping must match the actual pin assignment in the PORT group - a misconfigured pin map causes silent peripheral failure.
Estimated: at full 120 MHz operation with all peripherals active, junction temperature rise is approximately 15-20 C above ambient for the 100-pin TQFP package mounted on a 4-layer JEDEC EIA/JESD51 test board with 2 oz copper. The TQFP package provides reasonable thermal performance but does not match the lower thermal resistance of QFN exposed-pad variants. For continuous full-load operation at +125 C ambient, verify thermal margin in the actual product enclosure and PCB layout.
コンプライアンス情報
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this part is targeted at industrial, consumer, and non-safety-critical applications. For AEC-Q100-qualified alternatives, consider Microchip's SAM RH707 or SAM S70 family.
