ATSAMD20G17A-MNT - 48MHz Cortex-M0+ MCU 128KB Flash QFN-48 | Microchip
Teilenummer: ATSAMD20G17A-MNT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.36 | $336,00 |
| 500 | $2.99 | $1.495,00 |
| 1.000 | $2.66 | $2.660,00 |
| 3.000 | $2.35 | $7.050,00 |
ATSAMD20G17A-MNT Übersicht
A 32-bit microcontroller (MCU) is a single-chip processor that integrates CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as timers, ADC, DAC, communication interfaces, and GPIO into one package. ARM Cortex-M0+ cores target energy-efficient embedded applications, sit within the hierarchy of microcontroller -> embedded processor -> semiconductor device, and are widely used wherever deterministic interrupt response and low active/sleep current are required.
Key features of the ATSAMD20G17A-MNT include the Cortex-M0+ core with single-cycle I/O access for deterministic GPIO control, 128KB in-system programmable Flash plus 16KB SRAM, an 8-channel event system for hardware-triggered peripheral actions, a 12-bit 350ksps ADC, and SERCOM configurable serial interfaces (I2C/SPI/UART). The integrated 32.768kHz oscillator and DFLL/PLL with 48MHz digital frequency lock loop support crystal-less USB device and accurate timing applications.
On the architecture side, the SAM D20 uses a Cortex-M0+ pipeline with single-cycle 32-bit multiplier, NVIC with 4-bit priority, and Microchip's Atmel Start/MPLAB X IDE code base. The 48-QFN package exposes up to 38 GPIO, 6 SERCOM channels, one full-speed USB 2.0 device, and a segmented LCD controller on related variants, providing a balanced peripheral set for connected sensor and HMI designs.
Typical applications include home automation control panels, smart energy metering, industrial sensor hubs, consumer wearables, low-power wireless sensor nodes paired with external radios, and small human-machine interfaces using GPIO-driven LED or segment LCD indicators. The Cortex-M0+ plus SERCOM architecture suits designs that need flexible communication with limited PCB area.
When designing with this part, allocate the 128KB Flash budget to leave at least 8-16KB for a future bootloader (e.g., for OTA via external SPI Flash), and confirm SERCOM pin mapping against the 48-QFN pad layout before PCB layout because SERCOM functions are multiplexed. Use the on-chip DFLL with a 32.768kHz crystal reference for jitter-sensitive timing.
This page combines distributor pricing, pin-compatible alternatives, and practical design notes for the ATSAMD20G17A-MNT, complementing the manufacturer datasheet with cross-brand selection guidance not found elsewhere.
Drop-in-Alternativen für ATSAMD20G17A-MNT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATSAMD20G17A-MNT (gleiche Bauform und Footprint) – abweichend in Package, ADC, DAC, RAM Size, Communication Interfaces.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATSAMD20G18A-MNT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATSAMD20G16B-MNT
✅ Drop-In✓ Auf Lager
$1.68 / Stück
Datenblatt ansehen →ATSAMD20G17A-AUT
✅ Drop-In✓ Auf Lager
$1.42 / Stück
Datenblatt ansehen →ATSAMD20G17A-MN
✅ Drop-In✓ Auf Lager
$3.79 / Stück
Datenblatt ansehen →ATSAMD20G17A-AU
✅ Drop-In✓ Auf Lager
$3.1 / Stück
Datenblatt ansehen →ATSAMD20G17A-MNT Grenzwerte & elektrische Eigenschaften
| Core Processor | ARM Cortex-M0+ |
| Core Size | 32-Bit |
| Maximum CPU Frequency | 48 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM Size | 16 KB |
| Supply Voltage (VDDIN) | 1.6 V to 3.6 V |
| Betriebstemperatur | -40 C to +105 C |
| Gehäuse | 48-QFN (7x7 mm) |
| Montageart | Surface Mount |
| Anzahl der Pins | 48 |
| CoreMark/MHz | 2.14 |
| Connectivity | I2C, SPI, UART (via SERCOM) |
| Peripherals | Brown-out Detect/Reset, DMA, POR, WDT |
| Lead-Free / RoHS | Yes (Matte-Tin, -MNT suffix) |
| Oscillator Type | Internal; optional external 32.768 kHz crystal |
ATSAMD20G17A-MNT Pin-Konfiguration
| Pin 1 | PA00 — GPIO / XIN32 (external 32.768 kHz crystal input) |
| Pin 2 | PA01 — GPIO / XOUT32 (external 32.768 kHz crystal output) |
| Pin 3 | PA02 — GPIO / SERCOM0 PAD0 / ADC AIN0 |
| Pin 4 | PA03 — GPIO / SERCOM0 PAD1 / ADC AIN1 |
| Pin 5 | GND — Ground reference |
| Pin 6 | VDDIN — Digital I/O supply input (1.6V-3.6V) |
| Pin 7 | PA04 — GPIO / SERCOM0 PAD2 / ADC AIN2 |
| Pin 8 | PA05 — GPIO / SERCOM0 PAD3 / ADC AIN3 |
| Pin 9 | PA06 — GPIO / SERCOM1 PAD0 / ADC AIN4 |
| Pin 10 | PA07 — GPIO / SERCOM1 PAD1 / ADC AIN5 |
| Pin 11 | PA08 — GPIO / SERCOM1 PAD2 / ADC AIN6 |
| Pin 12 | PA09 — GPIO / SERCOM1 PAD3 / ADC AIN7 |
| Pin 13 | PA10 — GPIO / SERCOM2 PAD0 / ADC AIN8 |
| Pin 14 | PA11 — GPIO / SERCOM2 PAD1 / ADC AIN9 |
| Pin 15 | VDDIO — I/O supply reference (typically tied to VDDIN) |
| Pin 16 | GND — Ground reference |
| Pin 17 | PA12 — GPIO / SERCOM2 PAD2 / ADC AIN10 |
| Pin 18 | PA13 — GPIO / SERCOM2 PAD3 / ADC AIN11 |
| Pin 19 | PA14 — GPIO / SERCOM3 PAD0 |
| Pin 20 | PA15 — GPIO / SERCOM3 PAD1 |
| Pin 21 | PA16 — GPIO / SERCOM3 PAD2 |
| Pin 22 | PA17 — GPIO / SERCOM3 PAD3 |
| Pin 23 | PA18 — GPIO / SERCOM4 PAD0 |
| Pin 24 | PA19 — GPIO / SERCOM4 PAD1 |
| Pin 25 | PA20 — GPIO / SERCOM5 PAD2 |
| Pin 26 | PA21 — GPIO / SERCOM5 PAD3 |
| Pin 27 | PA22 — GPIO / SERCOM5 PAD0 |
| Pin 28 | PA23 — GPIO / SERCOM5 PAD1 |
| Pin 29 | PA24 — GPIO / USB_DM (USB peripheral) |
| Pin 30 | PA25 — GPIO / USB_DP (USB peripheral) |
| Pin 31 | PA27 — GPIO |
| Pin 32 | RESET — Reset input, active low |
| Pin 33 | VDDCORE — Internal core voltage regulator output (decoupling cap) |
| Pin 34 | GND — Ground reference |
| Pin 35 | PA28 — GPIO |
| Pin 36 | PA29 — GPIO |
| Pin 37 | PA30 — GPIO / SWCLK (debug clock) |
| Pin 38 | PA31 — GPIO / SWDIO (debug data) |
| Pin 39 | PB00 — GPIO |
| Pin 40 | PB01 — GPIO |
| Pin 41 | PB02 — GPIO |
| Pin 42 | PB03 — GPIO |
| Pin 43 | PB04 — GPIO |
| Pin 44 | PB05 — GPIO |
| Pin 45 | PB06 — GPIO |
| Pin 46 | PB07 — GPIO |
| Pin 47 | PB08 — GPIO |
| Pin 48 | PB09 — GPIO |
Typische Anwendungen
ATSAMD20G17A-MNT ist geeignet für 6 Anwendungs: Home Automation Hubs, Smart Energy Metering, Industrial Sensor Hubs, Consumer Wearables and Fitness Bands, Low-Power Wireless Sensor Nodes, Human-Machine Interface (HMI) Panels.
Home Automation Hubs
The ATSAMD20G17A-MNT's 128 KB Flash, 16 KB SRAM, and SERCOM-configurable I2C/SPI/UART channels make it a strong fit for home automation gateways that aggregate sensor data from Zigbee, BLE, or Wi-Fi companion radios. Its 48 MHz Cortex-M0+ core runs the application logic and parsing layers while six SERCOM instances handle multi-bus sensor fan-out. The 1.6-3.6 V supply range supports direct regulation from USB or 3.3 V LDO rails typical in wall-powered smart-home hubs. Compared to 8-bit MCUs in this segment, the SAM D20 delivers deterministic interrupt response, ample code space for TLS-lite stacks, and an event system for low-power wake-on-sensor behavior.
Empfohlen
Smart Energy Metering
In smart electricity, gas, or water meters the ATSAMD20G17A-MNT provides the 32-bit compute headroom required for metrology calculations (RMS, power factor, energy accumulation) while the integrated 12-bit ADC and SERCOM channels interface to current transformers, voltage dividers, and display drivers. The Cortex-M0+ at 48 MHz executes 2.14 CoreMark/MHz, leaving cycles for secure communications to AMI concentrators via UART or SPI. The industrial -40 C to +105 C temperature range supports outdoor meter housings and meter-base installations. Low-power sleep modes below 10 uA extend battery life in battery-backed metering designs.
Empfohlen
Industrial Sensor Hubs
Industrial 4-20 mA loop sensors, RTD conditioners, and process-control nodes benefit from the ATSAMD20G17A-MNT's deterministic Cortex-M0+ performance and event-driven peripheral interconnect. Six SERCOM channels let a single device aggregate SPI sensors (pressure, accelerometer), I2C sensors (temperature, humidity), and UART-modem diagnostics in one hub MCU. The 128 KB Flash holds IEC 61131-3 style logic plus small protocol stacks. The exposed thermal pad of the 48-QFN package enables sustained operation in -40 C to +105 C industrial cabinets where convection cooling is limited.
Empfohlen
Consumer Wearables and Fitness Bands
Fitness bands, smart watches, and connected wearable patches leverage the ATSAMD20G17A-MNT's Cortex-M0+ efficiency and 1.6-3.6 V supply to operate from small Li-ion or coin-cell batteries with weeks of standby life. The event system wakes the MCU only on sensor interrupts (heart rate, motion), and the 12-bit ADC plus SERCOM interface to PPG, IMU, and BLE companion ICs. 128 KB Flash accommodates BLE profile logic plus on-device activity classification algorithms. The compact 7x7 mm 48-QFN package fits inside wearable form factors where PCB area is constrained.
Empfohlen
Low-Power Wireless Sensor Nodes
Battery-powered wireless sensor nodes (WSN) such as environmental monitors, agricultural soil sensors, and structural-health nodes use the ATSAMD20G17A-MNT as the host MCU paired with a sub-GHz or BLE radio module. The 48 MHz Cortex-M0+ executes sensor fusion and small ML inference while the SERCOM channels drive SPI radio chips and I2C sensors. Sleep current under 10 uA combined with event-system wake-ups achieves multi-year coin-cell life. The 48-QFN industrial -40 C to +105 C rating supports outdoor enclosures and agricultural deployments exposed to temperature cycling.
Empfohlen
Human-Machine Interface (HMI) Panels
Small HMI panels for appliances, access control keypads, and instrument front-ends use the ATSAMD20G17A-MNT to drive segmented LCD, LED matrices, or character displays while decoding capacitive touch or rotary encoder inputs. The GPIO count of the 48-QFN package supports up to 38 I/O, enough to scan a 4x4 keypad plus status LEDs. The Cortex-M0+ processes UI state machines, debouncing, and communication to a host controller via UART or I2C. The 128 KB Flash comfortably stores multi-language menu trees and configuration profiles.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATSAMD20G17A-MNT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATSAMD20G18A-MNT | ATSAMD20G16B-MNT | ATSAMD20G17A-AUT |
|---|---|---|---|---|
| Brand | 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 |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 128 KB | 256 KB (+100%) | 64 KB (-50%) | 128 KB (same) |
| SRAM | 16 KB | 32 KB (+100%) | 8 KB (-50%) | 16 KB (same) |
| Operating Voltage | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V |
| Operating Temperature | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +125 C (automotive) |
| Automotive Grade (AEC-Q100) | No (industrial) | No | No | Yes |
Wichtigste Unterscheidungsmerkmale
- 128 KB Flash with Cortex-M0+ efficiency in compact 48-QFN (vs. ATSAMD20G16B-MNT (64 KB Flash))
- 256 KB Flash drop-in upgrade path within same family (vs. ATSAMD20G18A-MNT (256 KB Flash))
- Industrial temperature range without AEC-Q100 cost adder (vs. ATSAMD20G17A-AUT (automotive grade))
- SERCOM-configurable peripherals maximize pin reuse (vs. ATSAMD20E18A-MNT (64-pin SAM D20E))
Designhinweise
Place a 1 uF decoupling capacitor as close as possible to the VDDIN pin and a 1 uF capacitor on the VDDCORE pin to stabilize the internal core regulator. Add a 100 nF ceramic in parallel for high-frequency noise suppression. The SAM D20 internal regulator supports 1.6 V to 3.6 V supply, so a 3.3 V LDO upstream is typically sufficient. Estimated: at 48 MHz active current ~7 mA and 1.8 uA in deep-sleep, average system current is dominated by the duty cycle of active vs sleep states - use the event system to maximize sleep duration for battery life.
The 48-QFN package has an exposed thermal pad (ePAD) on pin 33 / underside that MUST be soldered to a ground copper pour of at least 25 mm^2 for proper thermal dissipation. At maximum ambient +105 C with 48 MHz active, junction temperature rise is approximately 25-35 C above ambient. Without the ePAD soldered, junction temperature may exceed 125 C under sustained full-load operation. Use thermal vias (0.3 mm drill, 0.5 mm pitch) under the ePAD to spread heat to inner PCB layers.
Reserve the SWD pins PA30 (SWCLK) and PA31 (SWDIO) on the 48-QFN for debug header access - do not assign them to application functions unless a debug-less production strategy is confirmed. Place a 2x5 1.27 mm SWD header on every prototype board for Atmel-ICE / MPLAB ICE 4 / PICkit 4 access. Route SWCLK and SWDIO as a 50-ohm impedance pair with ground guard traces to minimize EMI pickup on the debug interface.
Do not assume SERCOM channel-to-pin mapping is fixed - each SERCOM can be routed to multiple pin groups, but only one SERCOM instance can own a pin at a time. Verify the PINMUX configuration in Microchip Start / MPLAB Harmony before finalizing the schematic, because SERCOM pad assignments affect I2C/SPI/UART peripheral selection. The 32.768 kHz crystal pins PA00/PA01 must be configured for crystal mode (not GPIO) when an external low-frequency crystal is used.
Keep the 32.768 kHz crystal traces short (<5 mm) and symmetric to minimize load capacitance mismatch. Route USB DM/DP (PA24/PA25) as a 90-ohm differential pair with ground reference plane, no stubs, and no via transitions if possible. Place the USB common-mode choke and ESD protection within 10 mm of the USB connector. For mixed-signal designs, separate the analog ADC inputs (PA02-PA13) from digital switching traces with a ground moat.
Compliance-Informationen
RoHS and REACH compliant per Microchip product declaration. Lead-free Matte-Tin plating per -MNT suffix. Not AEC-Q100 qualified - choose ATSAMD20G17A-AUT variant for automotive AEC-Q100 applications.
