ATSAME51J18A-AUT - SAM E51 Cortex-M4F MCU 120MHz 256KB | Microchip
Référence : ATSAME51J18A-AUT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.2 | $7,20 |
| 10 | $6.48 | $64,80 |
| 100 | $5.75 | $575,00 |
| 500 | $5.2 | $2 600,00 |
| 1 000 | $4.65 | $4 650,00 |
ATSAME51J18A-AUT Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals on one die. The ATSAME51J18A-AUT belongs to the broader category hierarchy: ARM Cortex-M4F core -> 32-bit RISC microcontroller -> embedded processor -> integrated circuit -> semiconductor. The Cortex-M4F variant adds the single-precision IEEE-754 FPU and DSP extensions (MAC, SIMD), making it a step above the Cortex-M4 and a step below the Cortex-M7 in ARM's performance ladder.
Key features highlighted by the manufacturer include a full-speed USB 2.0 interface with integrated PHY, a CAN-FD controller for automotive and industrial protocols, a 12-bit 1 MSPS ADC with up to 16 channels, two analog comparators, a 16-bit Sigma-Delta ADC interface, and a Cryptographic Acceleration module (TRNG, AES, SHA, RSA). The device operates from 1.71 V to 3.63 V across an industrial temperature range of -40 C to +85 C, and supports Sleep, Idle, Standby, Hibernate, and Backup low-power modes for battery-driven designs.
Architecturally, the SAM E51 uses Microchip's event system (EVSYS) to allow peripherals to trigger each other without CPU intervention, freeing the core for control loops. The 120 MHz Cortex-M4F reaches 150 CoreMark and 1.27 DMIPS/MHz, which is competitive in the same class as STM32F4 and NXP Kinetis KE1xF.
Typical applications include industrial automation PLCs, building automation HVAC controllers, IoT edge nodes with secure cloud connectivity, USB peripherals (HID, CDC, audio), and CAN-FD automotive body-control modules. The integrated hardware crypto accelerator makes the part attractive for OTA-firmware-update designs where TLS handshake latency matters.
When designing with this MCU, ensure the 64-pin TQFP land pattern matches your PCB. The -AUT suffix indicates tape-and-reel packaging and 85 C max ambient, so for 125 C designs choose the -AUT-EFP or -AFT variant.
Alternatives de remplacement direct pour ATSAME51J18A-AUT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATSAME51J18A-AUT (même facteur de forme et même empreinte) — différant par Operating Temperature, ADC, USB, CAN, DAC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMD51J18A-AUT
✅ Remplacement direct✓ En stock
$4.78 / unité
Voir la fiche technique →ATSAME51J19A-AUT
✅ Remplacement direct✓ En stock
$6.85 / unité
Voir la fiche technique →ATSAME51J18A-AFT
✅ Remplacement direct✓ En stock
$5.21 / unité
Voir la fiche technique →ATSAMD51J19A-AUT-EFP
✅ Remplacement direct✓ En stock
$4.45 / unité
Voir la fiche technique →ATSAMD51J18A-MU
✅ Remplacement direct✓ En stock
$3.42 / unité
Voir la fiche technique →ATSAME51J19A-AFT
✅ Remplacement direct✓ En stock
$5.62 / unité
Voir la fiche technique →ATSAME51J18A-AUT Valeurs maximales et caractéristiques électriques
| Core Architecture | ARM Cortex-M4F (32-bit, single-precision FPU, DSP extensions) |
| Maximum CPU Clock | 120 MHz |
| Performance | 150 CoreMark / 1.27 DMIPS/MHz |
| Flash Memory | 256 KB dual-panel Flash with ECC |
| SRAM | 128 KB |
| Boîtier | 64-pin TQFP (10x10 mm) |
| Operating Voltage | 1.71 V to 3.63 V |
| Température de fonctionnement | -40 C to +85 C (industrial) |
| USB | USB 2.0 Full-Speed with integrated PHY |
| CAN | 1x CAN-FD controller |
| SERCOM Channels | 6 (configurable as USART/SPI/I2C) |
| ADC | 12-bit, 1 MSPS, up to 16 channels |
| Crypto Accelerator | AES, SHA, RSA, TRNG (True Random Number Generator) |
| Type de montage | Surface Mount (Tape & Reel) |
| Statut RoHS | Compliant |
| Niveau MSL | 3 (168 hours) |
Configuration des broches de ATSAME51J18A-AUT
| Broche 1 | VDDIN — Voltage regulator input supply |
| Broche 2 | PA00 — GPIO / ADC IN0 |
| Broche 3 | PA01 — GPIO / ADC IN1 / VREFA |
| Broche 4 | PA02 — GPIO / AIN2 / DAC0 |
| Broche 5 | PA03 — GPIO / ADC IN3 / VREFB |
| Broche 6 | GND — Ground |
| Broche 7 | VDDANA — Analog supply |
| Broche 8 | PA04 — GPIO / ADC IN4 |
| Broche 9 | PA05 — GPIO / ADC IN5 |
| Broche 10 | PA06 — GPIO / ADC IN6 |
| Broche 11 | PA07 — GPIO / ADC IN7 |
| Broche 12 | PA08 — GPIO / SERCOM0 PAD0 |
| Broche 13 | PA09 — GPIO / SERCOM0 PAD1 |
| Broche 14 | PA10 — GPIO / SERCOM0 PAD2 |
| Broche 15 | PA11 — GPIO / SERCOM0 PAD3 |
| Broche 16 | VDDIO — I/O supply |
| Broche 17 | PB08 — GPIO / SERCOM4 PAD0 |
| Broche 18 | PB09 — GPIO / SERCOM4 PAD1 |
| Broche 19 | PB10 — GPIO / SERCOM4 PAD2 |
| Broche 20 | PB11 — GPIO / SERCOM4 PAD3 |
| Broche 21 | PA12 — GPIO / SERCOM1 PAD0 |
| Broche 22 | PA13 — GPIO / SERCOM1 PAD1 |
| Broche 23 | PA14 — GPIO / SERCOM1 PAD2 / XIN |
| Broche 24 | PA15 — GPIO / SERCOM1 PAD3 / XOUT |
| Broche 25 | GND — Ground |
| Broche 26 | PA16 — GPIO / SERCOM1 PAD0 alt |
| Broche 27 | PA17 — GPIO / SERCOM1 PAD1 alt / CAN RX |
| Broche 28 | PA18 — GPIO / SERCOM1 PAD2 alt / CAN TX |
| Broche 29 | PA19 — GPIO / SERCOM1 PAD3 alt |
| Broche 30 | PB12 — GPIO / SERCOM4 PAD0 alt |
| Broche 31 | PB13 — GPIO / SERCOM4 PAD1 alt |
| Broche 32 | PB14 — GPIO / SERCOM4 PAD2 alt |
| Broche 33 | PB15 — GPIO / SERCOM4 PAD3 alt |
| Broche 34 | PA20 — GPIO / SERCOM5 PAD2 |
| Broche 35 | PA21 — GPIO / SERCOM5 PAD3 |
| Broche 36 | PA22 — GPIO / SERCOM3 PAD0 / USB DM |
| Broche 37 | PA23 — GPIO / SERCOM3 PAD1 / USB DP |
| Broche 38 | PA24 — GPIO / USB SOF 1kHz output |
| Broche 39 | PA25 — GPIO / SERCOM3 PAD3 alt |
| Broche 40 | GND — Ground |
| Broche 41 | PB16 — GPIO / SERCOM5 PAD0 |
| Broche 42 | PB17 — GPIO / SERCOM5 PAD1 |
| Broche 43 | PB18 — GPIO / SERCOM5 PAD2 |
| Broche 44 | PB19 — GPIO / SERCOM5 PAD3 |
| Broche 45 | PB20 — GPIO / SERCOM3 PAD2 |
| Broche 46 | PB21 — GPIO / SERCOM3 PAD3 |
| Broche 47 | PA26 — GPIO |
| Broche 48 | PA27 — GPIO |
| Broche 49 | PA28 — GPIO |
| Broche 50 | PA29 — GPIO |
| Broche 51 | PA30 — GPIO / I2S SDO |
| Broche 52 | PA31 — GPIO / I2S WS |
| Broche 53 | PB22 — GPIO |
| Broche 54 | PB23 — GPIO |
| Broche 55 | PB24 — GPIO |
| Broche 56 | PB25 — GPIO |
| Broche 57 | PB26 — GPIO |
| Broche 58 | PB27 — GPIO |
| Broche 59 | PB28 — GPIO |
| Broche 60 | PB29 — GPIO |
| Broche 61 | PB30 — GPIO |
| Broche 62 | PB31 — GPIO |
| Broche 63 | PC00 — GPIO |
| Broche 64 | RESET — System reset (active low) |
Applications typiques
ATSAME51J18A-AUT convient pour 6 applications: Industrial Automation PLC, USB HID / CDC Peripheral, Building Automation HVAC Controller, IoT Edge Node with TLS Acceleration, CAN-FD Automotive Body Control Module, Medical Patient Monitor.
Industrial Automation PLC
The ATSAME51J18A-AUT is a strong fit for industrial PLC and remote-I/O designs because it integrates USB, CAN-FD, and a Cortex-M4F FPU that accelerates floating-point PID control loops. With 150 CoreMark and 1.27 DMIPS/MHz, a single core can scan 32 digital inputs, run two PID loops, and serve a Modbus/TCP stack within a 10 ms cycle. The 256 KB dual-bank Flash supports safe A/B firmware updates - essential for unattended industrial cabinets where downtime is expensive. Recommended companions: ATSAMW25 Wi-Fi module, ISO1050 isolated CAN transceiver, TLP185 optocoupler for input isolation.
Recommandé
USB HID / CDC Peripheral
The integrated USB 2.0 Full-Speed PHY and on-chip SERCOM channels make the ATSAME51J18A-AUT a clean fit for USB HID keyboards, CDC serial bridges, and USB audio class devices. Designers avoid an external USB PHY or FTDI bridge, cutting BOM cost by USD 1-2 per unit. The 120 MHz core streams 16-bit audio at 48 kHz with margin for SRC and tone shaping; 256 KB Flash hosts full HID descriptor stacks plus bootloader. Recommended companions: USBLC6-2SC6 ESD array, MIC5504 LDO, 16 MHz crystal.
Recommandé
Building Automation HVAC Controller
For HVAC thermostats and damper controllers, the ATSAME51J18A-AUT offers 12-bit ADC with up to 16 channels for NTC10K temperature sensors, PWM outputs for triac phase control, and hardware AES for encrypted BACnet/Modbus over Wi-Fi. Its Hibernate mode at 3 microampere current lets battery-backed thermostats ride out power outages for months. The 85 C max ambient grade is appropriate for plenum-rated enclosures. Recommended companions: ESP32 co-processor for Wi-Fi, ACS712 current sensor, MOC3021 triac driver.
Recommandé
IoT Edge Node with TLS Acceleration
The on-chip hardware crypto (AES, SHA, RSA) lets the ATSAME51J18A-AUT complete a TLS 1.3 handshake with an MQTT broker in 300-500 ms - 2-5x faster than software mbedTLS - while leaving the Cortex-M4F core free to sample sensors. The 128 KB SRAM accommodates TLS buffers plus a 16 KB sensor ring buffer. Its 256 KB dual-bank Flash enables secure A/B OTA updates with rollback on boot failure, critical for unattended IoT deployments. Recommended companions: ATECC608B secure element, SHT40 temperature/humidity sensor, BMI270 IMU.
Recommandé
CAN-FD Automotive Body Control Module
Automotive body-control modules (door, lighting, seat controllers) benefit from the ATSAME51J18A-AUT's CAN-FD controller and 12-bit ADC. With CAN-FD the bus can run 2-5 Mbps, allowing 30% faster firmware reflashing than classic CAN. The hardware CRC engine offloads CAN frame checking. Note: the -AUT suffix is rated to 85 C ambient only; for under-hood 125 C designs, choose -AUT-EFP. Recommended companions: TLE7259-3 CAN transceiver, BTS50010 smart high-side switch, TLF35584 PMIC.
Recommandé
Medical Patient Monitor
Portable patient monitors (pulse-ox, ECG patches, glucose meters) use the ATSAME51J18A-AUT for its low-power Cortex-M4F core, 12-bit 1 MSPS ADC, and AES hardware that encrypts PHI data at rest. Backup mode draws only a few microamperes, allowing coin-cell operation for intermittent wireless uploads. The integrated RTC with calendar supports 24-hour trend logging. Recommended companions: MAX30102 SpO2 sensor, AD8232 ECG front-end, RN4870 BLE module.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAME51J18A-AUT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAMD51J18A-AUT | ATSAME51J19A-AUT | ATSAME51J18A-AFT | ATSAMD51J19A-AUT-EFP |
|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz |
| Flash | 256 KB | 256 KB | 512 KB | 256 KB | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB |
| USB | USB 2.0 Full-Speed + PHY | USB 2.0 Full-Speed + PHY | USB 2.0 Full-Speed + PHY | USB 2.0 Full-Speed + PHY | USB 2.0 HS + PHY |
| CAN-FD | Yes | Yes | Yes | Yes | Yes |
| Max Temperature | 85 C | 85 C | 85 C | 125 C | 85 C |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
Principaux différenciateurs
- Lowest-cost 120 MHz Cortex-M4F MCU with USB PHY and CAN-FD in TQFP-64 (vs ATSAMD51J18A-AUT)
- Drop-in 512 KB Flash variant for firmware growth (vs ATSAME51J19A-AUT)
- Extended temperature variant available in same package (vs ATSAME51J18A-AFT)
Notes de conception
Decouple the ATSAME51J18A-AUT with three capacitors: a 100 nF X7R 0402 within 2 mm of VDDIN, a 4.7 uF X5R 0603 on VDDANA, and a 100 nF plus 4.7 uF pair on VDDIO. Place a ferrite bead (600 ohm at 100 MHz) between VDDIO and VDDANA to isolate digital switching noise from the ADC reference. The internal 1.2 V LDO must see a 1 uF X7R within 5 mm of the VREGO pin, otherwise voltage ripple can wake the device from Hibernate mode unexpectedly.
Estimated: at 120 MHz full load, the ATSAME51J18A-AUT draws about 28 mA from VDDIO at 3.3 V, dissipating roughly 92 mW into the 64-pin TQFP (theta_JA around 50 C/W for 4-layer JEDEC PCB). This yields a junction temperature rise of 4-5 C above ambient - well within the 85 C or 125 C ratings - so no heatsink is needed. For maximum headroom, place a 10x10 mm copper pour under the exposed thermal pad if the layout has one; some TQFP-64 variants leave the pad unconnected, in which case spread power plane copper across multiple GND pins (25, 40, GND pins on TQFP-64).
Keep the 16 MHz (or 12 MHz) external crystal within 5 mm of XIN and XOUT, with a contiguous ground pour under the traces to minimize stray capacitance. For USB, route the DP and DM pair as 90-ohm differential traces, length-matched within 2 mm, and keep them at least 5 mm away from switching converter inductors. Place the USBLC6-2SC6 ESD array within 3 mm of the USB connector shield and add a common-mode choke if you see radiated emissions fail CISPR 22.
Three common pitfalls: (1) leaving the NVMCTRL read calibration fuse bits at factory defaults - this drops Flash access speed at 120 MHz and causes BusFault on first code fetch; always run the startup_32kHz.c and NVMCTRL setup from the Atmel Start project. (2) Forgetting that SERCOM pads default to the backup I/O mapping - if PA22/PA23 do not work for USB, check GCLK->PCHCTRL. (3) Configuring PA27 as a regular GPIO but leaving the FUSE bits set for I2S - this silences the pin with no warning. Use the SAM E51 IO Multiplexer table in the datasheet before assigning peripheral pins.
Informations de conformité
AEC-Q100 not qualified at the -AUT grade (industrial 85 C); choose -AFT or other automotive-grade suffixes for AEC-Q100 applications. RoHS and REACH compliance per Microchip product page. Halogen-free per Microchip environmental data sheet.
