ATSAMD21G17D-MUT - 48MHz ARM Cortex-M0+ MCU 128KB Flash QFN-48
Référence : ATSAMD21G17D-MUT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.17 | $2,17 |
| 10 | $1.96 | $19,60 |
| 100 | $1.74 | $174,00 |
| 500 | $1.52 | $760,00 |
| 1 000 | $1.31 | $1 310,00 |
ATSAMD21G17D-MUT Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and programmable peripherals. The Cortex-M0+ is ARM's smallest and most energy-efficient application core, optimized for deterministic interrupt response and minimal silicon area. Within the broader taxonomy, the ATSAMD21G17D belongs to the ARM Cortex-M family -> 32-bit microcontrollers -> embedded microcontrollers -> integrated circuits. The SAM D21 family specifically targets low-power connected applications where USB connectivity, capacitive touch, and rich analog integration are required without a separate transceiver.
Key features of the ATSAMD21G17D-MUT include a 48 MHz maximum CPU clock, 128 KB of self-programmable Flash with 4 KB read-while-write section, 16 KB SRAM, six SERCOM channels reconfigurable as UART/SPI/I2C, one full-speed USB 2.0 device port, two 12-bit ADCs (up to 350 ksps each), one 10-bit DAC, up to 38 GPIO, and a 32-bit RTC with calendar mode. Functional Safety (FuSa) features simplify IEC 60730 class B compliance for home appliances and white goods. Sleep currents are typically below 10 uA with full SRAM retention and RTC running.
Architecturally, the SAM D21 uses a single-cycle hardware multiplier, an MPU for memory protection, an Event System for inter-peripheral signaling without CPU intervention, and a Peripheral Touch Controller (PTC) supporting capacitive buttons, sliders, and proximity sensors. The device supports SERCOM re-mapping, allowing the same peripheral block to serve multiple physical pin assignments, which simplifies PCB routing in space-constrained designs.
Typical applications for the ATSAMD21G17D-MUT include home automation hubs, smart thermostats and metering, consumer wearables, low-cost sensor nodes, USB peripherals such as HID input devices and MIDI controllers, and industrial sensor interfaces. Its combination of USB device, ADC, DAC, and low-power modes makes it a versatile general-purpose MCU for connected embedded products.
When designing with this MCU, ensure the exposed pad is soldered to a sufficient copper pour to meet the 4-layer thermal and electrical reference design; an inadequately grounded pad will degrade ADC noise performance and SERCOM signal quality. Use the on-chip 32 kHz crystal oscillator for RTC accuracy rather than the internal 8 MHz trimmed RC for time-keeping.
This page synthesizes distributor pricing from DigiKey/Mouser, drop-in alternatives within the SAM D21 family, and practical design notes not found in the manufacturer datasheet, giving engineers a one-stop reference for the ATSAMD21G17D-MUT.
Alternatives de remplacement direct pour ATSAMD21G17D-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 ATSAMD21G17D-MUT (même facteur de forme et même empreinte) — différant par ADC, Package, DAC, Core, Flash Memory.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMD21G18D-MUT
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATSAMD21G17D-AUT
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.78 / unité
Voir la fiche technique →ATSAMD21G16D-MUT
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATSAMD21G17A-MUT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATSAMC21G17A-MUTS2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATSAMD21G17D-MUT Valeurs maximales et caractéristiques électriques
| Core Architecture | ARM Cortex-M0+ |
| Maximum CPU Clock | 48 MHz |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 16 KB |
| RWW Flash Section | 4 KB |
| Operating Voltage | 1.62 V to 3.63 V |
| Package Type | 48-pin QFN (7x7 mm) with exposed pad |
| Type de montage | Surface Mount |
| USB Interface | USB 2.0 Full-Speed Device |
| ADC | 2x 12-bit, up to 350 ksps |
| DAC | 1x 10-bit |
| SERCOM Channels | 6 (configurable UART/SPI/I2C) |
| GPIO | Up to 38 |
| RTC | 32-bit with calendar mode |
| Température de fonctionnement | -40C to +85C (I-temp) |
| Functional Safety | FuSa (IEC 60730 class B ready) |
| Niveau MSL | 3 (168 hours) |
| Statut RoHS | Compliant |
Configuration des broches de ATSAMD21G17D-MUT
| Broche 1 | VDDIO — Digital I/O supply voltage |
| Broche 2 | PA00 — GPIO / SERCOM1 PAD0 / ADC0 |
| Broche 3 | PA01 — GPIO / SERCOM1 PAD1 / ADC1 |
| Broche 4 | PA02 — GPIO / SERCOM0 PAD0 / ADC2 / DAC0 |
| Broche 5 | PA03 — GPIO / SERCOM0 PAD1 / ADC3 / VREFA |
| Broche 6 | GND — Ground |
| Broche 7 | PA04 — GPIO / SERCOM1 PAD2 / ADC4 |
| Broche 8 | PA05 — GPIO / SERCOM1 PAD3 / ADC5 |
| Broche 9 | PA06 — GPIO / SERCOM0 PAD2 |
| Broche 10 | PA07 — GPIO / SERCOM0 PAD3 |
| Broche 11 | PA08 — GPIO / SERCOM2 PAD0 / USB D- |
| Broche 12 | PA09 — GPIO / SERCOM2 PAD1 / USB D+ |
| Broche 13 | PA10 — GPIO / SERCOM2 PAD2 |
| Broche 14 | PA11 — GPIO / SERCOM2 PAD3 |
| Broche 15 | VDDIO — Digital I/O supply voltage |
| Broche 16 | GND — Ground |
| Broche 17 | PA12 — GPIO / SERCOM4 PAD0 / PTC X0 |
| Broche 18 | PA13 — GPIO / SERCOM4 PAD1 / PTC X1 |
| Broche 19 | PA14 — GPIO / SERCOM4 PAD2 / PTC X2 |
| Broche 20 | PA15 — GPIO / SERCOM4 PAD3 / PTC X3 |
| Broche 21 | PA16 — GPIO / SERCOM3 PAD0 / PTC Y0 |
| Broche 22 | PA17 — GPIO / SERCOM3 PAD1 / PTC Y1 |
| Broche 23 | PA18 — GPIO / SERCOM3 PAD2 / PTC Y2 |
| Broche 24 | PA19 — GPIO / SERCOM3 PAD3 / PTC Y3 |
| Broche 25 | PA20 — GPIO / SERCOM5 PAD2 |
| Broche 26 | PA21 — GPIO / SERCOM5 PAD3 |
| Broche 27 | PA22 — GPIO / SERCOM3 PAD0 / I2S FS0 |
| Broche 28 | PA23 — GPIO / SERCOM3 PAD1 / I2S SCK0 |
| Broche 29 | PA24 — GPIO / SERCOM5 PAD0 / USB SOF |
| Broche 30 | PA25 — GPIO / SERCOM5 PAD1 |
| Broche 31 | GND — Ground |
| Broche 32 | VDDCORE — Internal core voltage (decoupling) |
| Broche 33 | PA26 — GPIO / SERCOM3 PAD2 |
| Broche 34 | PA27 — GPIO / SERCOM3 PAD3 |
| Broche 35 | PA28 — GPIO / SERCOM5 PAD2 / Reset |
| Broche 36 | PA29 — GPIO / SERCOM5 PAD3 / Boot |
| Broche 37 | PA30 — GPIO / SERCOM1 PAD2 / SWCLK |
| Broche 38 | PA31 — GPIO / SERCOM1 PAD3 / SWDIO |
| Broche 39 | VBUS — USB VBUS sense |
| Broche 40 | VDDIO — Digital I/O supply voltage |
| Broche 41 | VDDIN — Voltage regulator input |
| Broche 42 | PB02 — GPIO / SERCOM5 PAD0 / ADC14 |
| Broche 43 | PB03 — GPIO / SERCOM5 PAD1 / ADC15 |
| Broche 44 | PB04 — GPIO / SERCOM3 PAD0 |
| Broche 45 | PB05 — GPIO / SERCOM3 PAD1 |
| Broche 46 | PB06 — GPIO / SERCOM3 PAD2 |
| Broche 47 | PB07 — GPIO / SERCOM3 PAD3 |
| Broche 48 | GND — Ground |
Applications typiques
ATSAMD21G17D-MUT convient pour 6 applications: USB HID Input Devices, Home Automation Hubs, Industrial Sensor Nodes, Smart Metering Endpoints, Consumer Wearables, Capacitive Touch Interfaces.
USB HID Input Devices
The ATSAMD21G17D-MUT is an excellent fit for USB Human Interface Device (HID) peripherals such as keyboards, mice, MIDI controllers, and game pads. Its integrated USB 2.0 Full-Speed device port with on-chip transceiver and pull-up resistor eliminates the need for an external USB PHY, while six SERCOM channels provide flexible SPI/I2C expansion for sensors and displays. The 48 MHz Cortex-M0+ core delivers ample processing headroom for HID report parsing and debouncing, and the 128 KB Flash comfortably stores USB descriptors, HID report maps, and firmware upgrade routines. Sleep current below 10 uA with RTC running extends battery life in wireless peripherals that wake only on user input.
Recommandé
Home Automation Hubs
Smart-home gateways and appliance controllers benefit from the ATSAMD21G17D-MUT's FuSa (IEC 60730 class B) readiness, low-power architecture, and rich peripheral set. The two 12-bit 350 ksps ADCs handle multiple analog sensor inputs (temperature, humidity, current sensing), while SERCOM channels provide UART/SPI/I2C interfaces for wireless co-processors (Bluetooth, LoRa, sub-GHz). Functional Safety features simplify certification of white-goods controllers where IEC 60730 compliance is mandatory. The 16 KB SRAM supports Zigbee or BLE HCI command buffers, and the 128 KB Flash holds OTA bootloader plus application. Sleep current below 10 uA extends battery life in wireless remote units.
Recommandé
Industrial Sensor Nodes
The ATSAMD21G17D-MUT suits industrial 4-20 mA sensor transmitters and IO-Link device transceivers where wide operating voltage (1.62-3.63 V) and industrial temperature range (-40C to +85C) are required. Its Cortex-M0+ core at 48 MHz processes sensor linearization, calibration, and IO-Link stack compression efficiently, while the two 12-bit ADCs digitize multiple analog inputs simultaneously with DMA support. Six SERCOMs interface to SPI sensors and I2C peripherals, and the Event System routes peripheral triggers without CPU intervention, reducing latency for deterministic IO-Link cycle timing. Functional Safety hardware assists in IEC 61508 SIL-capable designs.
Recommandé
Smart Metering Endpoints
For electricity, water, and gas metering end-points, the ATSAMD21G17D-MUT provides the metering compute headroom plus the analog integration to handle multi-phase ADC sampling and RTC timestamping. The 32-bit RTC with calendar mode captures consumption interval timestamps accurately even across leap years, while the 4 KB RWW flash section allows concurrent firmware updates without interrupting metering acquisition. SERCOM channels interface to PLC, M-Bus, or wireless M-Bus modems, and the low-power sleep modes with RTC retention extend battery life to 10+ years on a single lithium cell. The FuSa hardware assists in metering accuracy compliance.
Recommandé
Consumer Wearables
Wearable fitness bands, health patches, and smart watches use the ATSAMD21G17D-MUT as a sensor hub MCU because of its tiny 7x7 mm QFN-48 footprint and low-power architecture. The 12-bit ADC captures heart-rate, SpO2, and motion sensor signals, while SERCOM channels interface to BLE co-processors and OLED displays. Sleep current under 10 uA with full SRAM retention preserves battery life between user interactions, and the USB Full-Speed device port enables direct charging-cable data sync without extra components. The exposed pad provides adequate thermal dissipation for continuous sensor acquisition in wrist-worn form factors.
Recommandé
Capacitive Touch Interfaces
The ATSAMD21G17D-MUT's integrated Peripheral Touch Controller (PTC) supports capacitive buttons, sliders, wheels, and proximity sensing with up to 256 channels via external hardware. This makes it ideal for appliance front panels, automotive HMI, and industrial control surfaces where mechanical alternatives are unreliable. The PTC operates in deep sleep with wake-on-touch at currents below 5 uA per channel, while the Cortex-M0+ handles gesture recognition and SERCOM drives display feedback. Combined with FuSa support, the PTC simplifies IEC 62216 oven-class HMI designs with self-test capability.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAMD21G17D-MUT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAMD21G18D-MUT | ATSAMD21G17D-AUT | ATSAMD21G16D-MUT | ATSAMD21G17A-MUT | ATSAMC21G17A-MUTS2 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same |
| Flash Memory | 128 KB | 256 KB | 128 KB | 64 KB | 128 KB | 128 KB |
| SRAM | 16 KB | 32 KB | 16 KB | 8 KB | 16 KB | 16 KB |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB Interface | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device |
| Functional Safety | FuSa ready (IEC 60730 class B) | FuSa ready | FuSa ready | FuSa ready | Standard (no FuSa) | Standard |
| Operating Voltage | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 2.7 V to 5.5 V |
| Approx Unit Price (qty 1) | $2.17 | $2.65 | $2.17 (tray) | $1.85 | $2.10 | $2.55 |
Principaux différenciateurs
- Functional Safety (FuSa) hardware assists integrated on-chip (vs ATSAMD21G17A-MUT)
- Two-tier memory granularity within the SAM D21G family (vs ATSAMD21G16D-MUT)
- Migration path to CAN-FD via same QFN-48 footprint (vs ATSAMC21G17A-MUTS2)
Notes de conception
The 48-pin QFN package has an exposed thermal pad (EP) that MUST be soldered to a continuous ground plane on the top layer with thermal vias to inner ground layers. Per Microchip SAM D21 hardware design checklist, a minimum of 9 thermal vias (0.3 mm drill) under the EP is recommended for reliable assembly. Failure to solder the EP can cause erratic ADC readings, USB signal integrity issues, and mechanical solder-joint fatigue under thermal cycling. The PCB land pattern follows JEDEC MO-220 variant VKKD-4 with 0.5 mm pitch.
Estimated: at VDDIO = 3.3 V, CPU @ 48 MHz active, USB enumerated, the ATSAMD21G17D-MUT draws approximately 7 mA active current (datasheet typical 6.5 mA). In Standby Sleep with RTC running and full 16 KB SRAM retention, typical current drops to 4 uA; with full shutdown and RTC only, approximately 1.5 uA. For coin-cell battery designs (CR2032 220 mAh), assume usable capacity of 150 mAh after derating - a 4 uA standby with 0.1% duty cycle extends life to 4+ years. Decouple VDDIN with 1 uF + 0.1 uF X7R ceramic placed within 3 mm of the pin pair.
Do not omit the 32.768 kHz external crystal on XIN32/XOUT32 if accurate wall-clock time-keeping is required - the internal 32 kHz RC oscillator drifts up to 2% over temperature and voltage, which translates to 30 minutes per day in time-keeping applications. The brown-out detector (BOD) must be enabled in continuous mode (not sampled) for FuSa class B self-test routines - disable BOD continuous and the IEC 60730 BOD self-test cannot pass. For USB applications, place the 1 uF VBUS capacitor within 5 mm of pin 39 and route the D+/D- pair as a 90-ohm differential with no stubs.
Informations de conformité
RoHS and REACH compliant per Microchip product declaration. FuSa supports IEC 60730 class B but the part itself is not AEC-Q100 qualified - for automotive grade, consider ATSAMx21G17A-MUT (auto temp grade).
