ATSAMD51G18A-MU - 120MHz ARM Cortex-M4F MCU 256KB Flash | Microchip
Référence : ATSAMD51G18A-MU ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.84 | $6,84 |
| 10 | $6.21 | $62,10 |
| 100 | $5.42 | $542,00 |
| 500 | $4.79 | $2 395,00 |
| 1 000 | $4.25 | $4 250,00 |
| 2 500 | $3.88 | $9 700,00 |
ATSAMD51G18A-MU Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O into one device. The ATSAMD51 belongs to the 32-bit microcontroller category, which sits within the broader embedded processor / semiconductor hierarchy. The SAM D51 family is positioned for high-performance Cortex-M4F applications requiring DSP instructions and floating-point math, contrasted with Cortex-M0+ parts such as the SAM D21 family that target lower-power, lower-cost designs.
Key features include 256 KB Flash with ECC, 128 KB SRAM with ECC, a 12-bit 1 Msps ADC, two 12-bit DACs, USB 2.0 Full-Speed and High-Speed with on-chip PHY, a 10/100 Ethernet MAC, SD card host, I2S audio, up to six SERCOM serial channels, and a Cryptographic Accelerator (TRNG, AES, SHA). The Cortex-M4F core delivers 1.25 DMIPS/MHz and includes DSP extensions and a single-precision FPU for math-intensive tasks.
Architecturally, the SAM D51 uses dual-panel Flash with Error Correction Code to improve reliability and support live firmware updates, and a tightly-coupled memory (TCM) interface for deterministic low-latency code execution. The Peripheral Event System allows peripherals to trigger each other without CPU intervention, freeing core bandwidth for application logic.
Typical applications include industrial HMI panels, USB audio interfaces, IoT gateways, motor control with FOC algorithms, secure connected sensors, and graphical displays driven by the integrated Parallel Capture Interface or the I/O peripherals.
When designing with this part, allocate adequate PCB area for the exposed pad on the bottom of the VQFN-48 package and connect it to a solid ground plane for thermal dissipation and electrical performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, with structured data optimized for engineers and AI-powered component search.
Alternatives de remplacement direct pour ATSAMD51G18A-MU — 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 ATSAMD51G18A-MU (même facteur de forme et même empreinte) — différant par Package, DAC, SRAM, ADC, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMD51G19A-MU
✅ Remplacement direct✓ En stock
$5.4 / unité
Voir la fiche technique →ATSAMD51G18A-MF
✅ Remplacement direct✓ En stock
$5.11 / unité
Voir la fiche technique →ATSAMD51G18A-MFT
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$3.55 / unité
Voir la fiche technique →ATSAMD51G18A-MUT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SAME51G18A-MU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATSAMD51G18A-MU-EFP
✅ Remplacement direct✓ En stock
$4.94 / unité
Voir la fiche technique →ATSAMD21G18A-MU
✅ Remplacement direct✓ En stock
$3.15 / unité
Voir la fiche technique →ATSAMD51G18A-MU Valeurs maximales et caractéristiques électriques
| Core | ARM Cortex-M4F |
| CPU Architecture | 32-bit RISC with FPU and DSP |
| Maximum CPU Clock | 120 MHz |
| Performance | 1.25 DMIPS/MHz |
| Program Flash | 256 KB (with ECC) |
| SRAM | 128 KB (with ECC) |
| Operating Voltage | 1.71 V to 3.63 V |
| Température de fonctionnement | -40 C to +85 C (industrial) |
| ADC | 12-bit, up to 1 Msps, 16 channels |
| DAC | Two 12-bit outputs |
| USB | USB 2.0 Full-Speed and High-Speed with on-chip PHY |
| Ethernet | 10/100 MAC (requires external PHY) |
| Serial Interfaces | Up to 6 SERCOM (configurable I2C/SPI/UART) |
| I/O Pins | Up to 37 GPIO |
| Cryptography | TRNG, AES, SHA hardware accelerator |
| Boîtier | 48-VQFN (7x7 mm) with exposed pad |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Niveau MSL | 3 (168 hours) |
| Family | SAM D51 (D5x/E5x family) |
Configuration des broches de ATSAMD51G18A-MU
| Broche 1 | PA00 — GPIO / XIN32 |
| Broche 2 | PA01 — GPIO / XOUT32 |
| Broche 3 | PA02 — GPIO / AIN0 |
| Broche 4 | PA03 — GPIO / AIN1 / VREFA |
| Broche 5 | PA04 — GPIO / AIN2 / VREFB |
| Broche 6 | PA05 — GPIO / AIN3 |
| Broche 7 | PA06 — GPIO / AIN4 |
| Broche 8 | PA07 — GPIO / AIN5 |
| Broche 9 | PA08 — GPIO / NMI |
| Broche 10 | PA09 — GPIO |
| Broche 11 | PA10 — GPIO |
| Broche 12 | PA11 — GPIO |
| Broche 13 | VDDIO — I/O supply voltage |
| Broche 14 | VSS — Ground |
| Broche 15 | PA12 — GPIO |
| Broche 16 | PA13 — GPIO |
| Broche 17 | PA14 — GPIO |
| Broche 18 | PA15 — GPIO |
| Broche 19 | PA16 — GPIO / I2S MCK0 |
| Broche 20 | PA17 — GPIO / I2S FS0 |
| Broche 21 | PA18 — GPIO / I2S SCK0 |
| Broche 22 | PA19 — GPIO / I2S SDO0 |
| Broche 23 | PA20 — GPIO / I2S SDI0 |
| Broche 24 | PA21 — GPIO |
| Broche 25 | PA22 — GPIO |
| Broche 26 | PA23 — GPIO / USB SOF |
| Broche 27 | PA24 — GPIO / USB D- |
| Broche 28 | PA25 — GPIO / USB D+ |
| Broche 29 | PA27 — GPIO |
| Broche 30 | RESET — Active-low reset |
| Broche 31 | VDDCORE — Internal core voltage (decoupling) |
| Broche 32 | VSS — Ground |
| Broche 33 | VDDIO — I/O supply voltage |
| Broche 34 | PA30 — GPIO / SWCLK |
| Broche 35 | PA31 — GPIO / SWDIO |
| Broche 36 | PB00 — GPIO |
| Broche 37 | PB01 — GPIO |
| Broche 38 | PB02 — GPIO |
| Broche 39 | PB03 — GPIO |
| Broche 40 | PB04 — GPIO |
| Broche 41 | PB05 — GPIO |
| Broche 42 | PB06 — GPIO |
| Broche 43 | PB07 — GPIO |
| Broche 44 | PB08 — GPIO |
| Broche 45 | PB09 — GPIO |
| Broche 46 | PB10 — GPIO |
| Broche 47 | PB11 — GPIO |
| Broche 48 | VDDANA — Analog supply voltage |
| Broche 49 | EP — Exposed pad - must be soldered to ground plane |
Applications typiques
ATSAMD51G18A-MU convient pour 6 applications: Industrial HMI and Touch Panels, USB Audio Interfaces and DACs, Industrial IoT Gateways and Secure Connected Sensors, BLDC and FOC Motor Control, Portable Medical and Wearable Devices, Smart Appliance and Home Automation Controllers.
Industrial HMI and Touch Panels
The ATSAMD51G18A-MU's 120 MHz Cortex-M4F core with FPU and DSP extensions easily drives TFT displays up to 480x272 pixels while handling capacitive touch sensing in parallel. According to the SAM D51 datasheet, the Parallel Capture Interface (PCIF) accepts external camera or display data streams, while the integrated I2S port supports audio playback. The 128 KB SRAM with ECC holds frame buffers and fonts, while the 256 KB Flash stores graphics libraries. Engineers typically pair it with the ATSAMD51G18A-MF for factory-traceability variants in industrial HMI production runs.
Recommandé
USB Audio Interfaces and DACs
The integrated USB 2.0 Full-Speed and High-Speed with on-chip PHY lets the ATSAMD51G18A-MU present a USB Audio Class (UAC) 2.0 device to host PCs without external components. The dual 12-bit DACs and I2S/SSC peripheral support 24-bit/192 kHz audio paths via an external DAC such as the PCM1794A. Hardware AES/SHA accelerators protect firmware integrity against tampering. Same-brand engineers often pair it with ATSAMD51G19A-MU on denser versions needing 512 KB Flash for full UAC firmware stacks.
Recommandé
Industrial IoT Gateways and Secure Connected Sensors
The integrated 10/100 Ethernet MAC and hardware cryptographic accelerator (AES-128/256, SHA-2, TRNG) make the ATSAMD51G18A-MU a strong fit for IoT gateways that must securely forward sensor data. According to the SAM D51 datasheet, the on-chip TRNG meets security requirements without external entropy sources. The Cortex-M4F handles TLS handshake work alongside sensor acquisition, while 256 KB Flash with ECC stores OTA staging images. Same-brand customers often pair this with the ATSAMD51G18A-MUT reel variant for high-volume SMT manufacturing.
Recommandé
BLDC and FOC Motor Control
Field-Oriented Control (FOC) of brushless DC motors demands deterministic floating-point math, which the ATSAMD51G18A-MU's Cortex-M4F with single-precision FPU delivers at 120 MHz. The peripheral event system, programmable 16-bit PWM timers, and the integrated 12-bit 1 Msps ADC with up to 16 channels allow precise three-phase current sensing. Dual 12-bit DACs generate reference signals for analog loops. Same-brand engineering teams use the SAME51G18A-MU drop-in upgrade when functional safety certification (IEC 60730) is required.
Recommandé
Portable Medical and Wearable Devices
The low-power SleepWalking peripherals and 1.71V minimum supply let the ATSAMD51G18A-MU run directly from a single-cell Li-ion battery in portable medical and wearable designs. The 12-bit ADC delivers 1 Msps for biometric sensing (ECG, SpO2, temperature), and the USB 2.0 High-Speed PHY allows fast battery charging plus data sync over a single connector. Industrial -40C to +85C temperature range supports wearable environmental requirements. Same-brand product managers often pair this MCU with ATSAMD51G19A-MU when adding on-device ML models requires more Flash.
Recommandé
Smart Appliance and Home Automation Controllers
The ATSAMD51G18A-MU's Cortex-M4F performance, Ethernet MAC, USB, and six SERCOM channels let engineers build appliance hubs that bridge Wi-Fi/BLE modules, capacitive touch UIs, and motor drivers. The hardware crypto block secures OTA updates, while the SD/MMC host interface supports removable storage for log retention. Engineers designing connected appliances pair it with the SAME51G18A-MU drop-in upgrade for IEC 60335 functional safety certification. Production lines often order the ATSAMD51G18A-MFT tape-and-reel variant for automated assembly.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAMD51G18A-MU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAMD51G19A-MU | SAME51G18A-MU | ATSAMD21G18A-MU |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-VQFN (7x7 mm) | 48-VQFN (7x7 mm) - same | 48-VQFN (7x7 mm) - same | 48-VQFN (7x7 mm) - same |
| Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M0+ |
| Maximum Clock | 120 MHz | 120 MHz | 120 MHz | 48 MHz |
| Flash | 256 KB | 512 KB | 256 KB | 256 KB |
| SRAM | 128 KB | 192 KB | 128 KB | 32 KB |
| Functional Safety | No | No | Yes (Class B) | No |
| USB | USB FS + HS | USB FS + HS | USB FS + HS | USB FS only |
| Hardware Crypto | AES, SHA, TRNG | AES, SHA, TRNG | AES, SHA, TRNG | AES, TRNG |
Principaux différenciateurs
- Higher CPU performance with FPU and DSP (vs ATSAMD21G18A-MU)
- Pin-compatible functional safety upgrade path (vs ATSAMD51G18A-MU vs SAME51G18A-MU)
- On-chip USB 2.0 High-Speed PHY and Ethernet MAC (vs ATSAMD21G18A-MU)
Notes de conception
Estimated: at 120 MHz CPU clock on 3.3V supply with active peripherals, core power dissipation is approximately 30-60 mW depending on workload. The 48-VQFN package has a thermal resistance of approximately 30 C/W on a standard JEDEC 4-layer test board. Connect the exposed pad (pin 49) to a continuous ground plane using multiple thermal vias to keep junction temperature rise well below 30 C in industrial ambient conditions.
Place decoupling capacitors (one 100 nF ceramic per VDD/VDDIO/VDDANA pair) within 2 mm of each supply pin. Use a 4.7 uF bulk capacitor near the VDDANA pin to stabilize the analog supply for the ADC and DAC. Keep the exposed pad free of solder mask under the package thermal pad for optimal ground-plane stitching and thermal dissipation. Route USB DP/DM as a 90 ohm differential pair with length matching within 150 mil.
Configure the GCLK and peripheral clock generators via the MCLK and OSCCTRL registers before enabling peripherals; running a peripheral from an uninitialized clock domain causes bus faults. The Cortex-M4F FPU requires lazy stacking to be enabled to avoid interrupt latency penalties. Always configure the NMI pin pull-up before enabling interrupts; floating NMI triggers spurious resets. Lock the flash region containing boot code with the NVMCTRL security bit if security is required.
Informations de conformité
RoHS and REACH compliant per Microchip product page; not AEC-Q100 qualified - see SAME51 automotive-grade line. Industrial temperature range -40C to +85C.
