ATSAMD21G17D-MUT - 48MHz ARM Cortex-M0+ MCU 128KB Flash QFN-48
N.º de pieza: ATSAMD21G17D-MUT ✓ Activo| Cant. | Precio unitario | 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 Descripción general
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.
Alternativas directas para ATSAMD21G17D-MUT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAMD21G17D-MUT (mismo factor de forma y huella) — difiere en ADC, Package, DAC, Core, Flash Memory.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATSAMD21G18D-MUT
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ATSAMD21G17D-AUT
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.78 / unidad
Ver hoja de datos →ATSAMD21G16D-MUT
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ATSAMD21G17A-MUT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAMC21G17A-MUTS2
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAMD21G17D-MUT Valores máximos y características eléctricas
| 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 |
| Tipo de montaje | 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 |
| Temperatura de funcionamiento | -40C to +85C (I-temp) |
| Functional Safety | FuSa (IEC 60730 class B ready) |
| Nivel MSL | 3 (168 hours) |
| Estado RoHS | Compliant |
Configuración de pines de ATSAMD21G17D-MUT
| Pin 1 | VDDIO — Digital I/O supply voltage |
| Pin 2 | PA00 — GPIO / SERCOM1 PAD0 / ADC0 |
| Pin 3 | PA01 — GPIO / SERCOM1 PAD1 / ADC1 |
| Pin 4 | PA02 — GPIO / SERCOM0 PAD0 / ADC2 / DAC0 |
| Pin 5 | PA03 — GPIO / SERCOM0 PAD1 / ADC3 / VREFA |
| Pin 6 | GND — Ground |
| Pin 7 | PA04 — GPIO / SERCOM1 PAD2 / ADC4 |
| Pin 8 | PA05 — GPIO / SERCOM1 PAD3 / ADC5 |
| Pin 9 | PA06 — GPIO / SERCOM0 PAD2 |
| Pin 10 | PA07 — GPIO / SERCOM0 PAD3 |
| Pin 11 | PA08 — GPIO / SERCOM2 PAD0 / USB D- |
| Pin 12 | PA09 — GPIO / SERCOM2 PAD1 / USB D+ |
| Pin 13 | PA10 — GPIO / SERCOM2 PAD2 |
| Pin 14 | PA11 — GPIO / SERCOM2 PAD3 |
| Pin 15 | VDDIO — Digital I/O supply voltage |
| Pin 16 | GND — Ground |
| Pin 17 | PA12 — GPIO / SERCOM4 PAD0 / PTC X0 |
| Pin 18 | PA13 — GPIO / SERCOM4 PAD1 / PTC X1 |
| Pin 19 | PA14 — GPIO / SERCOM4 PAD2 / PTC X2 |
| Pin 20 | PA15 — GPIO / SERCOM4 PAD3 / PTC X3 |
| Pin 21 | PA16 — GPIO / SERCOM3 PAD0 / PTC Y0 |
| Pin 22 | PA17 — GPIO / SERCOM3 PAD1 / PTC Y1 |
| Pin 23 | PA18 — GPIO / SERCOM3 PAD2 / PTC Y2 |
| Pin 24 | PA19 — GPIO / SERCOM3 PAD3 / PTC Y3 |
| Pin 25 | PA20 — GPIO / SERCOM5 PAD2 |
| Pin 26 | PA21 — GPIO / SERCOM5 PAD3 |
| Pin 27 | PA22 — GPIO / SERCOM3 PAD0 / I2S FS0 |
| Pin 28 | PA23 — GPIO / SERCOM3 PAD1 / I2S SCK0 |
| Pin 29 | PA24 — GPIO / SERCOM5 PAD0 / USB SOF |
| Pin 30 | PA25 — GPIO / SERCOM5 PAD1 |
| Pin 31 | GND — Ground |
| Pin 32 | VDDCORE — Internal core voltage (decoupling) |
| Pin 33 | PA26 — GPIO / SERCOM3 PAD2 |
| Pin 34 | PA27 — GPIO / SERCOM3 PAD3 |
| Pin 35 | PA28 — GPIO / SERCOM5 PAD2 / Reset |
| Pin 36 | PA29 — GPIO / SERCOM5 PAD3 / Boot |
| Pin 37 | PA30 — GPIO / SERCOM1 PAD2 / SWCLK |
| Pin 38 | PA31 — GPIO / SERCOM1 PAD3 / SWDIO |
| Pin 39 | VBUS — USB VBUS sense |
| Pin 40 | VDDIO — Digital I/O supply voltage |
| Pin 41 | VDDIN — Voltage regulator input |
| Pin 42 | PB02 — GPIO / SERCOM5 PAD0 / ADC14 |
| Pin 43 | PB03 — GPIO / SERCOM5 PAD1 / ADC15 |
| Pin 44 | PB04 — GPIO / SERCOM3 PAD0 |
| Pin 45 | PB05 — GPIO / SERCOM3 PAD1 |
| Pin 46 | PB06 — GPIO / SERCOM3 PAD2 |
| Pin 47 | PB07 — GPIO / SERCOM3 PAD3 |
| Pin 48 | GND — Ground |
Aplicaciones típicas
ATSAMD21G17D-MUT es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAMD21G17D-MUT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- Functional Safety (FuSa) hardware assists integrated on-chip (frente a ATSAMD21G17A-MUT)
- Two-tier memory granularity within the SAM D21G family (frente a ATSAMD21G16D-MUT)
- Migration path to CAN-FD via same QFN-48 footprint (frente a ATSAMC21G17A-MUTS2)
Notas de diseño
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.
Información de cumplimiento
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).
