ATSAME51N20A-AUT-EFP - 120MHz Cortex-M4F MCU, 1MB Flash | Microchip
N.º da peça: ATSAME51N20A-AUT-EFP ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.95 | $8,95 |
| 10 | $8.1 | $81,00 |
| 100 | $7.2 | $720,00 |
| 500 | $6.4 | $3.200,00 |
| 1.000 | $5.65 | $5.650,00 |
ATSAME51N20A-AUT-EFP Visão geral
What is an ARM Cortex-M4F microcontroller? An ARM Cortex-M4F MCU is a 32-bit RISC processor with a single-precision Floating Point Unit (FPU) and Digital Signal Processing (DSP) instructions, designed for deterministic real-time embedded control. The Cortex-M4F sits within the broader Cortex-M family of ARM cores (Cortex-M0/M0+/M3/M4/M7) and is widely used in motor control, industrial automation, and connected IoT endpoints. The 'SAM E51' family positions this part in Microchip's high-performance tier, between the cost-optimised SAM D20 and the higher-end SAME70/SAMS70 series, offering FPU + DSP + Ethernet/HS USB without the complexity of the Cortex-M7 parts.
Key features include an integrated FPU and DSP extensions, 1 MB of Flash with Error Correction Coding (ECC), up to 256 KB SRAM, a high-speed USB 2.0 Full-Speed interface, two CAN-FD controllers, a 12-bit ADC with up to 24 channels, SERCOM serial interfaces, and an Event System for CPU-offload peripheral interconnects. The device operates from 1.71V to 3.6V supply across an industrial temperature range of -40C to +85C.
Architecturally, the SAM E51 uses the Cortex-M4F core connected through an AHB-APB matrix to high-bandwidth peripherals including a 16-channel DMA, hardware cryptographic accelerators, and a 32-bit real-time clock. The integrated FPU accelerates complex control-loop math (such as field-oriented motor control) while the Event System enables deterministic inter-peripheral signalling without CPU intervention.
Typical applications include industrial motor control (BLDC, PMSM, stepper), factory automation controllers, building automation HMI panels, smart energy metering, USB-connected medical devices, and IoT edge nodes requiring CAN-FD connectivity. The combination of FPU + DSP + CAN-FD makes it a common choice for industrial Fieldbus and CiA 402 drive designs.
Designers should provide a low-impedance 3.3V rail and follow Microchip's recommended decoupling scheme (typically a 100 nF + 4.7 uF pair per VDD pin). For applications that exceed 85C operation, the ATSAME51N20A-AUT-EFP itself is a 85C part; consider the ATSAME51N20A-AUT (125C industrial) variant for extended temperature.
This page synthesises distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, enabling engineers to make a faster qualification decision.
Alternativas drop-in para ATSAME51N20A-AUT-EFP — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAME51N20A-AUT-EFP (mesmo formato e footprint) — diferindo em Operating Temperature, ADC, USB, Core, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAME51N20A-AUT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAME51N20A-AU-EFP
✅ Drop-In✓ Em estoque
$8.1 / unidade
Ver ficha técnica →ATSAME51N19A-AUT-EFP
✅ Drop-In✓ Em estoque
$4.61 / unidade
Ver ficha técnica →ATSAME51J20A-AUT-EFP
✅ Drop-In✓ Em estoque
$5.42 / unidade
Ver ficha técnica →ATSAMD51N20A-AU
✅ Drop-In✓ Em estoque
$8.49 / unidade
Ver ficha técnica →ATSAMD51P20A-AUT
✅ Drop-In✓ Em estoque
$8.25 / unidade
Ver ficha técnica →ATSAME51N20A-AUT-EFP Classificações máximas e características elétricas
| Core | ARM Cortex-M4F with FPU and DSP |
| Maximum CPU Clock | 120 MHz |
| Program Flash | 1 MB (Dual-Panel with ECC) |
| SRAM | 256 KB |
| Operating Voltage | 1.71 V to 3.6 V |
| Temperatura de operação | -40C to +85C (industrial) |
| Encapsulamento | 100-pin TQFP (14x14 mm) |
| USB | USB 2.0 Full-Speed, Host + Device |
| CAN | 2x CAN-FD controllers |
| ADC | 12-bit, up to 24 channels |
| SERCOM | Up to 8 configurable serial interfaces |
| DMA | 16-channel |
| Crypto Accelerator | AES, SHA, True Random Number Generator |
| Tipo de montagem | Surface Mount (Tape & Reel) |
| Nível MSL | 3 (168 hours) |
| Status RoHS | Compliant |
Configuração de pinos do ATSAME51N20A-AUT-EFP
| Pino 1 | PA00 — GPIO / XIN32 (external 32 kHz crystal input) |
| Pino 2 | PA01 — GPIO / XOUT32 (external 32 kHz crystal output) |
| Pino 3 | PA02 — GPIO / AIN0 (ADC analog input) |
| Pino 4 | PA03 — GPIO / AIN1 (ADC analog input) |
| Pino 5 | VDDIO — Digital I/O supply voltage |
| Pino 6 | GND — Ground |
| Pino 7 | PA04 — GPIO / AIN2 |
| Pino 8 | PA05 — GPIO / AIN3 |
| Pino 9 | PA06 — GPIO / AIN4 |
| Pino 10 | PA07 — GPIO / AIN5 |
| Pino 11 | VDDIO — Digital I/O supply voltage |
| Pino 12 | GND — Ground |
| Pino 13 | PA08 — GPIO / AIN6 |
| Pino 14 | PA09 — GPIO / AIN7 |
| Pino 15 | PA10 — GPIO / AIN8 |
| Pino 16 | PA11 — GPIO / AIN9 / I2S_FS |
| Pino 17 | VDDIO — Digital I/O supply voltage |
| Pino 18 | GND — Ground |
| Pino 19 | PA12 — GPIO / AIN10 |
| Pino 20 | PA13 — GPIO / AIN11 |
| Pino 21 | PA14 — GPIO / AIN12 |
| Pino 22 | PA15 — GPIO / AIN13 |
| Pino 23 | PA16 — GPIO / AIN14 / SERCOM1 PAD0 |
| Pino 24 | PA17 — GPIO / AIN15 / SERCOM1 PAD1 |
| Pino 25 | PA18 — GPIO / SERCOM1 PAD2 |
| Pino 26 | PA19 — GPIO / SERCOM1 PAD3 |
| Pino 27 | PA20 — GPIO / SERCOM3 PAD0 |
| Pino 28 | PA21 — GPIO / SERCOM3 PAD1 |
| Pino 29 | PA22 — GPIO / SERCOM3 PAD2 |
| Pino 30 | PA23 — GPIO / SERCOM3 PAD3 |
| Pino 31 | PA24 — GPIO / USB_DM |
| Pino 32 | PA25 — GPIO / USB_DP |
| Pino 33 | VBUS — USB VBUS sense input |
| Pino 34 | VDDIO — Digital I/O supply voltage |
| Pino 35 | GND — Ground |
| Pino 36 | PA27 — GPIO / CAN0 TX |
| Pino 37 | PA28 — GPIO / CAN0 RX |
| Pino 38 | RESET_N — Active-low reset input |
| Pino 39 | VDDIO — Digital I/O supply voltage |
| Pino 40 | GND — Ground |
| Pino 41 | PB00 — GPIO / CAN1 TX |
| Pino 42 | PB01 — GPIO / CAN1 RX |
| Pino 43 | PB02 — GPIO / SERCOM5 PAD0 |
| Pino 44 | PB03 — GPIO / SERCOM5 PAD1 |
| Pino 45 | PB04 — GPIO / SERCOM5 PAD2 |
| Pino 46 | PB05 — GPIO / SERCOM5 PAD3 |
| Pino 47 | PB06 — GPIO / SERCOM4 PAD0 |
| Pino 48 | PB07 — GPIO / SERCOM4 PAD1 |
| Pino 49 | PB08 — GPIO / SERCOM4 PAD2 |
| Pino 50 | PB09 — GPIO / SERCOM4 PAD3 |
| Pino 51 | PB10 — GPIO / SERCOM2 PAD0 |
| Pino 52 | PB11 — GPIO / SERCOM2 PAD1 |
| Pino 53 | PB12 — GPIO / SERCOM2 PAD2 |
| Pino 54 | PB13 — GPIO / SERCOM2 PAD3 |
| Pino 55 | PB14 — GPIO |
| Pino 56 | PB15 — GPIO |
| Pino 57 | PB16 — GPIO |
| Pino 58 | PB17 — GPIO |
| Pino 59 | PB18 — GPIO |
| Pino 60 | PB19 — GPIO |
| Pino 61 | PB20 — GPIO |
| Pino 62 | PB21 — GPIO |
| Pino 63 | PC00 — GPIO |
| Pino 64 | PC01 — GPIO |
| Pino 65 | PC02 — GPIO |
| Pino 66 | PC03 — GPIO |
| Pino 67 | PC04 — GPIO |
| Pino 68 | PC05 — GPIO |
| Pino 69 | PC06 — GPIO |
| Pino 70 | PC07 — GPIO |
| Pino 71 | VDDIO — Digital I/O supply voltage |
| Pino 72 | GND — Ground |
| Pino 73 | PC08 — GPIO |
| Pino 74 | PC09 — GPIO |
| Pino 75 | PC10 — GPIO |
| Pino 76 | PC11 — GPIO |
| Pino 77 | PC12 — GPIO |
| Pino 78 | PC13 — GPIO |
| Pino 79 | PC14 — GPIO |
| Pino 80 | PC15 — GPIO |
| Pino 81 | PC16 — GPIO |
| Pino 82 | PC17 — GPIO |
| Pino 83 | PC18 — GPIO |
| Pino 84 | PC19 — GPIO |
| Pino 85 | PC20 — GPIO |
| Pino 86 | PC21 — GPIO |
| Pino 87 | PC22 — GPIO |
| Pino 88 | PC23 — GPIO |
| Pino 89 | PD00 — GPIO |
| Pino 90 | PD01 — GPIO |
| Pino 91 | PD09 — GPIO |
| Pino 92 | PD10 — GPIO |
| Pino 93 | VDDIO — Digital I/O supply voltage |
| Pino 94 | GND — Ground |
| Pino 95 | VDDCORE — Internal core voltage (LDO output) |
| Pino 96 | GND — Ground |
| Pino 97 | VDDIO — Digital I/O supply voltage |
| Pino 98 | GND — Ground |
| Pino 99 | VSW — DC-DC switching regulator output |
| Pino 100 | GND — Ground |
Aplicações típicas
ATSAME51N20A-AUT-EFP é adequado para 6 aplicaçãos: Industrial Motor Control (BLDC / PMSM), Factory Automation and PLC Modules, Building Automation HMI Panels, Smart Energy Metering, Connected Medical Devices (USB Tethered), IoT Edge Nodes with CAN-FD.
Industrial Motor Control (BLDC / PMSM)
The ATSAME51N20A-AUT-EFP is well suited to BLDC and PMSM motor control because its 120 MHz Cortex-M4F core combined with the single-precision FPU and DSP extensions delivers deterministic execution of field-oriented control (FOC) loops within typical 20 kHz PWM cycles. The 16-channel Event System allows PWM, ADC, and comparator triggers to be wired without CPU intervention, freeing the M4F core for control-law math. Two CAN-FD controllers enable CiA 402 drive profiles for multi-axis industrial Fieldbus networks. The integrated 12-bit ADC with up to 24 channels supports simultaneous current/voltage sensing across three motor phases with hardware averaging. With 256 KB SRAM the device can host vector torque tables, sensorless observer state variables, and a TCP/IP or CANopen stack concurrently. Compared to discrete DSP + MCU two-chip designs, the single-chip approach reduces PCB area and BOM cost while keeping real-time guarantees.
Recomendado
Factory Automation and PLC Modules
For PLC digital and analogue I/O modules the ATSAME51N20A-AUT-EFP offers the SERCOM serial interfaces (up to 8) needed to bridge RS-485, RS-232, and isolated SPI links to backplane controllers. The 1 MB Flash allows complete IEC 61131-3 runtime plus application logic on a single MCU, while the 256 KB SRAM supports MODBUS or EtherNet/IP message buffers. Hardware AES-256 and SHA accelerators on-die secure field-device firmware and prevent unauthorised parameter tampering. The 100-TQFP package provides enough GPIO for typical 16-input / 16-output PLC slices with margin for status LEDs and serial debug. Operating from 1.71V to 3.6V lets the same design run on 3.3V or 5V-derived rails, simplifying inventory for IEC 61131-2 compliant industrial environments.
Recomendado
Building Automation HMI Panels
The ATSAME51N20A-AUT-EFP drives colour TFT HMI panels for HVAC and access-control systems via its high-speed SERCOM-based SPI/QSPI interface, while the 12-bit ADC digitises touch-screen coordinates and analogue sensor inputs. Full-Speed USB 2.0 enables on-device firmware update ports without external PHY chips. Hardware AES-256 protects wireless credential storage when paired with an external ATECC608B secure element. The Cortex-M4F's DSP extensions accelerate FFT-based audio processing for voice prompt or speech-recognition HMIs. Industrial -40C to +85C operation supports unheated equipment rooms and outdoor kiosks, and the 100-TQFP footprint fits standard 4-layer HMI panel PCBs with controlled impedance for the TFT data bus.
Recomendado
Smart Energy Metering
In single-phase and three-phase smart meters, the ATSAME51N20A-AUT-EFP provides the computational throughput for real-time power-quality analysis, including harmonic distortion calculations performed by the DSP-extended Cortex-M4F core. The two CAN-FD controllers allow DLMS/COSEM or IEC 61850 communication in parallel with control messaging on the same chip. The 1 MB Flash with ECC stores metering firmware, calibration tables, and encrypted OTA staging images; ECC prevents silent corruption in long-life deployments. The 12-bit ADC samples current transformers at high oversampling rates for class 0.5 metering accuracy, and the integrated True Random Number Generator seeds the cryptographic handshake with utility head-end systems. The 100-TQFP industrial-grade package is suited to meter enclosures with -40C cold-start requirements.
Recomendado
Connected Medical Devices (USB Tethered)
USB-tethered diagnostic and monitoring devices leverage the ATSAME51N20A-AUT-EFP's Full-Speed USB 2.0 interface for plug-and-play connectivity with host PCs without an external PHY. The Cortex-M4F with FPU performs sensor-fusion maths on patient signals (SpO2, ECG, temperature) while DSP extensions accelerate FFT-based heart-rate-variability calculations. Hardware AES-256/SHA accelerators satisfy HIPAA-aligned encryption-at-rest requirements for on-device patient log storage. The 256 KB SRAM buffers multi-channel waveform captures between USB transfers. The 1 MB Flash holds a USB CDC + vendor-class composite stack with field-updateable firmware. Industrial -40C to +85C temperature range and 100-TQFP package suit portable medical-cart designs that require long-term reliability.
Recomendado
IoT Edge Nodes with CAN-FD
For industrial IoT edge gateways, the ATSAME51N20A-AUT-EFP provides two CAN-FD controllers that aggregate sensor data from CAN-bus nodes, while its Full-Speed USB or external Ethernet MAC provides upstream connectivity. The 120 MHz Cortex-M4F runs lightweight MQTT-SN or CoAP stacks concurrently with CAN message routing using the integrated 16-channel DMA to offload frame transfers. Hardware AES-256 protects transport-layer security (TLS 1.2 record encryption) without measurable CPU overhead. The 1 MB Flash holds the secure bootloader, application image, and over-the-air staging image for FOTA updates. The 100-TQFP industrial-grade package suits DIN-rail-mounted edge nodes operating in factory-floor temperature extremes.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAME51N20A-AUT-EFP — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAME51N20A-AUT | ATSAME51N20A-AU-EFP | ATSAME51N19A-AUT-EFP | ATSAME51J20A-AUT-EFP | ATSAMD51N20A-AU | ATSAMD51P20A-AUT |
|---|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F |
| Maximum Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash | 1 MB | 1 MB | 1 MB | 512 KB (-50%) | 1 MB | 1 MB | 1 MB |
| SRAM | 256 KB | 256 KB | 256 KB | 192 KB (-25%) | 256 KB | 256 KB | 256 KB |
| Operating Temperature | -40C to +85C | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C | 0C to +70C | -40C to +85C |
| CAN-FD Controllers | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Principais diferenciais
- Integrated Cortex-M4F with FPU and DSP extensions at 120 MHz (vs ATSAME51N19A-AUT-EFP)
- Two independent CAN-FD controllers on-chip (vs ATSAMD51P20A-AUT)
- Industrial temperature grade in EFP tape-and-reel packaging (vs ATSAME51N20A-AU-EFP)
Notas de projeto
The ATSAME51N20A-AUT-EFP integrates an internal 1.2V LDO regulator with an optional on-chip DC-DC switching converter (VSW pin 99). For noise-sensitive analog designs or low-EMI applications, configure the part to use the internal LDO by tying VSW to VDDCORE through the recommended inductor network. Estimated: at 120 MHz active current consumption is approximately 18 mA per the datasheet typical characteristics; combined with GPIO drive current this requires a 3.3V rail capable of at least 50 mA for MCU-only operation plus peripheral load.
Place a 100 nF decoupling capacitor as close as possible to every VDDIO/VDDIO pair (pins 5/6, 11/12, 17/18, 34/35, 39/40, 71/72, 93/94, 97/98) and a 4.7 uF bulk capacitor on the 3.3V main rail. Keep the crystal traces to XIN32/XOUT32 short and symmetric, and provide a guard ground around them to minimise oscillator jitter. The 100-pin TQFP at 0.5 mm pitch requires 4-layer PCB with 0.2 mm via-in-pad for reliable assembly under IPC-7351 medium-density land pattern rules.
Do not exceed 3.6V on any VDDIO pin or apply voltage to PB00/PB01 (CAN1 pins) before VDDIO is powered - this can latch-up the part. For USB applications, ensure the VBUS sense pin (pin 33) is connected through a voltage divider per the SAM E51 reference schematic, and apply a 1 uF capacitor on the VBUS line to meet USB-IF inrush current requirements. When migrating firmware from SAM D51 to SAM E51, verify the new SERCOM channel mapping table - the SERCOM peripheral numbering differs between families even though the part is pin-compatible.
Estimated: at 120 MHz and 3.3V VDDIO, the SAM E51 core dissipates approximately 60 mW under typical active load. The 100-pin TQFP package has theta_JA of approximately 50 C/W on a 4-layer JEDEC EIA/JESD51 test board, allowing operation at 85C ambient without active cooling. For continuous 120 MHz operation at elevated temperatures, design with a copper pour thermal pad connected through the centre land pattern to maintain junction temperature below 125C.
Informações de conformidade
RoHS compliant per Microchip product page. The ATSAME51N20A-AUT-EFP is industrial grade but not AEC-Q100 qualified; for AEC-Q100 automotive applications consider the SAM E53 series variant (not in same footprint).
