ATSAMD51J18A-MUT - 120MHz Cortex-M4F MCU, 256KB Flash | Microchip
Référence : ATSAMD51J18A-MUT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.12 | $8,12 |
| 10 | $7.45 | $74,50 |
| 100 | $6.78 | $678,00 |
| 500 | $5.92 | $2 960,00 |
| 1 000 | $5.18 | $5 180,00 |
ATSAMD51J18A-MUT Présentation
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. The SAM D51 family in particular sits within Microchip's high-performance 32-bit MCU portfolio, positioned above the Cortex-M0+ based SAM D20/D21 lines and below the Cortex-M7 based SAME70/SAMS70 families. It targets applications that need DSP-class math throughput, deterministic real-time control, and substantial connectivity without jumping to a Linux-capable application processor.
Key features of the ATSAMD51J18A include the Cortex-M4F core running up to 120 MHz with single-cycle MAC and single-precision FPU, 256 KB dual-panel Flash supporting live updates, 128 KB SRAM with ECC for safety, and a configurable SERCOM peripheral set providing up to six flexible serial interfaces (each can be I2C, SPI, or USART). The device also integrates a 12-bit 1 Msps ADC, two 12-bit DACs, and a high-speed USB 2.0 Full-Speed interface with on-chip PHY. Operating voltage ranges from 1.71 V to 3.6 V, with an industrial temperature grade suitable for commercial and industrial environments.
Typical applications include industrial motor control, human-machine interface (HMI) panels, smart energy metering, USB-C peripherals, audio processing front-ends, and IoT edge nodes. The Cortex-M4F DSP instructions accelerate algorithms such as FFTs, FIR filters, and PID control loops, while the integrated USB and SERCOM peripherals simplify connectivity to sensors, displays, and host systems. The 9x9 mm VQFN footprint with 0.5 mm pitch is compatible with the rest of the SAM D51 64-pin pinout family.
When designing with this MCU, ensure the VDDCORE pin is decoupled per datasheet recommendations and that the on-chip voltage regulator's inductor is correctly selected. Programming is supported through the SWD interface using Microchip's MPLAB X IDE, Atmel Studio legacy projects, and the SAMD51 core support in the Arduino and PlatformIO ecosystems, enabling rapid prototyping.
Alternatives de remplacement direct pour ATSAMD51J18A-MUT — 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 ATSAMD51J18A-MUT (même facteur de forme et même empreinte) — différant par Package, USB, SRAM, Operating Temperature, SERCOM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMD51J19A-MUT
✅ Remplacement direct✓ En stock
$4.45 / unité
Voir la fiche technique →ATSAMD51J20A-MUT
✅ Remplacement direct✓ En stock
$6.2 / unité
Voir la fiche technique →ATSAMD51J18A-MU
✅ Remplacement direct✓ En stock
$3.42 / unité
Voir la fiche technique →ATSAMD51J18A-AUT
✅ Remplacement direct✓ En stock
$4.78 / unité
Voir la fiche technique →ATSAMD51J18A-MUT Valeurs maximales et caractéristiques électriques
| Series | SAM D51 |
| Core Processor | ARM Cortex-M4F |
| Core Size | 32-Bit |
| Maximum Clock Speed | 120 MHz |
| Program Memory Size | 256 KB (256K x 8) Flash |
| Tension d'alimentation | 1.71 V to 3.6 V |
| Température de fonctionnement | -40C to +85C (industrial) |
| Boîtier | 64-VQFN (9x9 mm) with EP |
| Type de montage | Surface Mount |
| FPU | Yes (single-precision) |
| DSP Instructions | Yes (single-cycle MAC, SIMD) |
| ADC | 12-bit, up to 1 Msps |
| DAC | 2x 12-bit |
| USB | USB 2.0 Full-Speed with on-chip PHY |
| SERCOM | Up to 6 flexible serial interfaces (I2C/SPI/USART) |
| Statut RoHS | Compliant |
Configuration des broches de ATSAMD51J18A-MUT
| Broche 1 | PA00 — GPIO/SERCOM/I2C |
| Broche 2 | PA01 — GPIO/SERCOM/I2C |
| Broche 3 | PA02 — GPIO/ADC0/AIN[0] |
| Broche 4 | PA03 — GPIO/ADC0/AIN[1] |
| Broche 5 | PA04 — GPIO/ADC0/AIN[2]/VOUT |
| Broche 6 | PA05 — GPIO/ADC0/AIN[3]/VREFA |
| Broche 7 | PA06 — GPIO/ADC0/AIN[4] |
| Broche 8 | PA07 — GPIO/ADC0/AIN[5] |
| Broche 9 | PA08 — GPIO/SERCOM/I2C |
| Broche 10 | PA09 — GPIO/SERCOM/I2C |
| Broche 11 | PA10 — GPIO/SERCOM/I2C |
| Broche 12 | PA11 — GPIO/SERCOM/I2C |
| Broche 13 | VDDIO — I/O supply voltage |
| Broche 14 | GND — Ground |
| Broche 15 | PA12 — GPIO/SERCOM/I2C |
| Broche 16 | PA13 — GPIO/SERCOM/I2C |
| Broche 17 | PA14 — GPIO/SERCOM/I2C |
| Broche 18 | PA15 — GPIO/SERCOM/I2C |
| Broche 19 | PA16 — GPIO/SERCOM/I2C |
| Broche 20 | PA17 — GPIO/SERCOM/I2C |
| Broche 21 | PA18 — GPIO/SERCOM/I2C |
| Broche 22 | PA19 — GPIO/SERCOM/I2C |
| Broche 23 | PA20 — GPIO/SERCOM/I2C |
| Broche 24 | PA21 — GPIO/SERCOM/I2C |
| Broche 25 | PB22 — GPIO/SERCOM/I2C |
| Broche 26 | PB23 — GPIO/SERCOM/I2C |
| Broche 27 | PA24 — GPIO/SERCOM/I2C/TC |
| Broche 28 | PA25 — GPIO/SERCOM/I2C/TC |
| Broche 29 | VDDIO — I/O supply voltage |
| Broche 30 | GND — Ground |
| Broche 31 | PB30 — GPIO/SERCOM/I2C |
| Broche 32 | PB31 — GPIO/SERCOM/I2C |
| Broche 33 | PA27 — GPIO/SERCOM/I2C |
| Broche 34 | PA28 — GPIO/SERCOM/I2C |
| Broche 35 | VREFB — Analog reference B |
| Broche 36 | GND — Ground |
| Broche 37 | PA30 — GPIO/SERCOM/I2C |
| Broche 38 | PA31 — GPIO/SERCOM/I2C |
| Broche 39 | PB00 — GPIO/SERCOM/I2C |
| Broche 40 | PB01 — GPIO/SERCOM/I2C |
| Broche 41 | PB02 — GPIO/SERCOM/I2C/ADC |
| Broche 42 | PB03 — GPIO/SERCOM/I2C/ADC |
| Broche 43 | VDDCORE — Core supply output |
| Broche 44 | GND — Ground |
| Broche 45 | PB04 — GPIO/SERCOM/I2C/ADC |
| Broche 46 | PB05 — GPIO/SERCOM/I2C/ADC |
| Broche 47 | PB06 — GPIO/SERCOM/I2C/ADC |
| Broche 48 | PB07 — GPIO/SERCOM/I2C/ADC |
| Broche 49 | PB08 — GPIO/SERCOM/I2C/ADC |
| Broche 50 | PB09 — GPIO/SERCOM/I2C/ADC |
| Broche 51 | PB10 — GPIO/SERCOM/I2C/ADC |
| Broche 52 | PB11 — GPIO/SERCOM/I2C/ADC |
| Broche 53 | PB12 — GPIO/SERCOM/I2C |
| Broche 54 | PB13 — GPIO/SERCOM/I2C |
| Broche 55 | PB14 — GPIO/SERCOM/I2C |
| Broche 56 | PB15 — GPIO/SERCOM/I2C |
| Broche 57 | VDDIO — I/O supply voltage |
| Broche 58 | GND — Ground |
| Broche 59 | PC16 — GPIO/SERCOM/I2C |
| Broche 60 | PC17 — GPIO/SERCOM/I2C |
| Broche 61 | PC18 — GPIO/SERCOM/I2C |
| Broche 62 | PC19 — GPIO/SERCOM/I2C |
| Broche 63 | VDDIO — I/O supply voltage |
| Broche 64 | RESET — Reset input (active low) |
Applications typiques
ATSAMD51J18A-MUT convient pour 7 applications: Industrial Motor Control, Human-Machine Interface (HMI) Panels, Smart Energy Metering, USB-C Peripherals and HID Devices, Audio Processing Front-Ends, IoT Edge Nodes and Sensor Hubs, Building Automation Controllers.
Industrial Motor Control
The ATSAMD51J18A-MUT fits industrial motor control because its Cortex-M4F core delivers single-cycle MAC and single-precision FPU instructions needed for field-oriented control (FOC) algorithms on BLDC and PMSM motors. Running at 120 MHz, the MCU can complete a full FOC loop including Park/Clarke transforms and SVM within microseconds. The dual 12-bit DACs generate reference waveforms for inverter control, while the high-speed 12-bit ADC samples phase currents at up to 1 Msps. Hardware PWM timers with complementary outputs drive three-phase MOSFET/IGBT bridges directly. Industrial motor control firmware typically fits within the 256 KB dual-panel Flash, leaving headroom for bootloaders. The 1.71-3.6 V supply range tolerates noisy 24 V industrial buses after regulation.
Recommandé
Human-Machine Interface (HMI) Panels
The ATSAMD51J18A-MUT powers HMI panels requiring a responsive graphical user interface plus real-time control. The Cortex-M4F DSP accelerates image decoding and on-the-fly transformations, while six flexible SERCOMs interface to TFT displays, touch controllers, and external memory. Hardware USB 2.0 Full-Speed with on-chip PHY enables panel configuration and firmware update from a host PC without an external PHY chip. The 64-VQFN 9x9 mm footprint suits compact panel layouts, and the industrial temperature grade ensures operation in factory environments. Designers pair the MCU with an external QSPI Flash and a small TFT-LCD, leaving the 256 KB internal Flash for the RTOS, GUI framework, and application logic.
Recommandé
Smart Energy Metering
The ATSAMD51J18A-MUT suits smart energy meters requiring accurate power measurement and secure communication. The 12-bit 1 Msps ADC samples voltage and current waveforms simultaneously, while the Cortex-M4F DSP computes RMS, active/reactive power, and harmonics in real time. The dual-panel Flash with ECC supports secure firmware update mechanisms mandated by metering standards. Hardware AES/SHA accelerators (when enabled via fuses) protect communication over the meter's mesh or PLC link. SERCOMs connect to metrology front-ends, real-time clocks, and wireless modules. The industrial temperature range and 1.71-3.6 V supply accommodate harsh electrical environments with surge protection on the input rail.
Recommandé
USB-C Peripherals and HID Devices
The ATSAMD51J18A-MUT integrates USB 2.0 Full-Speed with on-chip PHY, eliminating the need for an external PHY chip in HID, audio, or CDC peripherals. The Cortex-M4F core handles USB protocol stacks, HID report synthesis, and any DSP needed for audio input/output devices. Six SERCOMs connect to sensors, buttons, encoders, and external SPI Flash for firmware storage. Designers can build USB-C keyboards, mice, audio interfaces, or vendor-class devices without an external USB PHY, simplifying BOM and shrinking PCB area. The 120 MHz clock and 256 KB Flash accommodate USB stacks plus application code with room for bootloader and DFU modes.
Recommandé
Audio Processing Front-Ends
The ATSAMD51J18A-MUT is well suited for audio processing applications such as digital mixers, effect pedals, and USB audio interfaces. The Cortex-M4F FPU executes biquad filters, FFTs, and dynamics processing at sample rates up to 48 kHz with headroom. Dual 12-bit DACs drive line outputs, while the 12-bit ADC captures line or microphone inputs. SERCOMs interface to I2S codecs for higher-fidelity 24-bit paths, and the I2S peripheral in the SAM D51 family can be configured via the peripheral multiplexing scheme. USB 2.0 Full-Speed with on-chip PHY enables class-compliant USB audio without an external PHY, reducing BOM cost in low-latency streaming scenarios.
Recommandé
IoT Edge Nodes and Sensor Hubs
The ATSAMD51J18A-MUT serves as a sensor hub in IoT edge nodes where local DSP preprocessing reduces uplink bandwidth. The Cortex-M4F performs on-device anomaly detection or feature extraction before forwarding summaries via Wi-Fi, BLE, or LoRa companion modules. Six flexible SERCOMs handle I2C sensors, SPI displays, and UART modules, while USB enables local configuration. The 1.71-3.6 V supply range supports battery-powered operation with DC-DC efficiency. Industrial temperature grade enables outdoor or factory deployments. Designers can run a lightweight RTOS such as FreeRTOS or Zephyr on the M51 for deterministic sensor fusion, while the 256 KB Flash holds the OS plus application logic.
Recommandé
Building Automation Controllers
The ATSAMD51J18A-MUT is a strong fit for building automation controllers (BACnet, Modbus, KNX gateways) needing deterministic networking and DSP for sensor filtering. Cortex-M4F DSP executes real-time FFT-based vibration monitoring on HVAC equipment or audio detection for security panels. Six SERCOMs interface to RS-485 transceivers, KNX/TP-UART chips, and I2C environmental sensors simultaneously. Hardware USB supports local commissioning tools, while Flash with ECC ensures firmware integrity over multi-year deployments. The 64-VQFN footprint and industrial temperature grade suit DIN-rail enclosures with constrained ventilation.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAMD51J18A-MUT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAMD51J19A-MUT | ATSAMD51J20A-MUT | ATSAMD51J18A-MU | ATSAMD51J18A-AUT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9 mm) with EP | 64-VQFN (9x9 mm) with EP - same | 64-VQFN (9x9 mm) with EP - same | 64-VQFN (9x9 mm) with EP - same | 64-VQFN (9x9 mm) with EP - same |
| 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 | 512 KB | 1 MB | 256 KB | 256 KB |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (automotive) |
| Packaging Form | Tape & Reel | Tape & Reel | Tape & Reel | Tray | Tape & Reel |
| USB | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY |
| SERCOMs | Up to 6 (I2C/SPI/USART) | Up to 6 (I2C/SPI/USART) | Up to 6 (I2C/SPI/USART) | Up to 6 (I2C/SPI/USART) | Up to 6 (I2C/SPI/USART) |
| ADC / DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC |
Principaux différenciateurs
- Higher Flash density within same footprint (vs ATSAMD51J19A-MUT)
- Pin-compatible upgrade path to 1 MB Flash (vs ATSAMD51J20A-MUT)
- Automotive temperature grade option in same package (vs ATSAMD51J18A-AUT)
- Tray packaging variant for prototype builds (vs ATSAMD51J18A-MU)
Notes de conception
The ATSAMD51J18A-MUT requires separate VDDIO and VDDCORE rails. VDDIO can range from 1.71-3.6 V to power I/O and the on-chip voltage regulator. The internal regulator generates VDDCORE (~1.2 V) from VDDIO; place the recommended 1 uF X7R decoupling capacitor on the VDDCORE pin as close as physically possible. Failure to decouple VDDCORE correctly can cause core instability or boot failure. Add a bulk 10 uF + 100 nF pair on VDDIO near the supply pins. For battery-powered designs, use the on-chip Buck regulator mode (configurable via fuses) to improve efficiency at light loads.
Route the 64-VQFN 9x9 mm footprint with 0.5 mm pitch using micro-via-in-pad if the design uses inner-layer fan-out under the exposed pad. The EP must be soldered to a continuous ground plane for thermal dissipation; thermal resistance theta_JA depends heavily on EP solder quality. Use at least 4 ground vias in the EP pad to stitch thermal conductivity. Place the SWD signals (SWDIO, SWCLK, SWO) on accessible test points for programming. Keep the analog reference pins VREFA/VREFB routed away from switching signals to avoid ADC noise coupling.
Three pitfalls deserve attention. First, the SAM D51 SERCOM peripheral multiplexing must be configured via the PORT and PMUX registers; the Arduino 'pin number' abstractions do not always map directly to the data sheet's SERCOM numbering. Second, the USB bus needs a 1.5 kohm pull-up on D+ for Full-Speed enumeration; many development boards include this but custom PCBs must add it. Third, when migrating firmware between J18A and J19A/J20A, the linker script must be updated to reflect the larger Flash; otherwise the bootloader may silently fail to program the upper regions.
Estimated: at maximum 120 MHz CPU activity with all peripherals active, the 64-VQFN EP package can dissipate approximately 200-300 mW continuous before junction temperature becomes a limiting factor. In a typical indoor application with adequate ground plane stitching, the junction temperature rise is minimal. For enclosed housings without airflow, derate the CPU clock to 80 MHz or implement sleep modes to maintain junction temperature within the 125 C maximum. The EP must not be left floating; floating EP causes thermal shutdown under load.
Informations de conformité
RoHS and REACH compliant per Microchip product page. The standard ATSAMD51J18A-MUT is industrial grade (-40C to +85C); the ATSAMD51J18A-AUT variant is automotive-grade AEC-Q100 qualified. All variants are lead-free and halogen-free per Microchip's environmental compliance documentation.
