ATSAMC21G17A-MUT - 48MHz Cortex-M0+ MCU 128KB Flash | Microchip
Référence : ATSAMC21G17A-MUT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.38 | $4,38 |
| 10 | $4.1 | $41,00 |
| 100 | $3.65 | $365,00 |
| 500 | $3.2 | $1 600,00 |
| 1 000 | $2.85 | $2 850,00 |
| 3 000 | $2.45 | $7 350,00 |
ATSAMC21G17A-MUT Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals. The Cortex-M0+ is ARM's smallest and most energy-efficient application processor core, designed for deterministic embedded control in cost-sensitive applications. Within the broader hierarchy, an MCU sits below microprocessors (MPUs) in integration level and is part of the embedded computing category, alongside DSPs and application processors. The SAM C21 family specifically targets 5V-tolerant industrial CAN-FD applications where higher-voltage signal swings and robust communication are required.
Key features of the ATSAMC21G17A include single-cycle hardware multiplication, a Micro Trace Buffer for lightweight instruction tracing, a Memory Protection Unit (MPU), and 4 KB of independent self-programmable Flash dedicated to EEPROM emulation. The device supports up to 38 programmable I/O pins and is drop-in compatible with select SAM D20 and SAM D21 devices, simplifying migration paths for designers upgrading from earlier Microchip Cortex-M0+ parts.
The ATSAMC21G17A-MUT belongs to the Functional Safety (FuSa) variant of the SAM C21 family, with documentation packages supporting IEC 60730 Class B safety requirements for household appliances and similar regulated applications. The SERCOM (Serial Communication) peripheral provides configurable I2C, SPI, and UART interfaces, while the CAN-FD controller supports modern automotive and industrial network protocols at data rates up to 8 Mbps.
Typical applications include industrial CAN-FD sensor nodes, capacitive touch user interfaces for appliances, motor control subsystems, building automation controllers, and 5V industrial communication bridges. The combination of 5V tolerance, CAN-FD, and integrated analog makes the part particularly attractive for factory automation, HVAC controls, and white-goods designs where robustness and longevity matter most.
When designing with this MCU, ensure decoupling follows Microchip's reference design with one 100 nF ceramic capacitor per VDD pin plus a bulk 4.7 uF capacitor. The PTC requires careful PCB layout with balanced sensor traces; refer to application note AT11481 for touch sensor design guidelines. The internal 48 MHz oscillator is factory-trimmed but a 32.768 kHz crystal is recommended for RTC accuracy.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes for the ATSAMC21G17A-MUT that complement the manufacturer datasheet for engineers selecting a 5V Cortex-M0+ MCU.
Alternatives de remplacement direct pour ATSAMC21G17A-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 ATSAMC21G17A-MUT (même facteur de forme et même empreinte) — différant par Package, DAC, Program Memory (Flash), SRAM, ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMC21G17A-MUTS2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATSAMC21G16A-AUT
✅ Remplacement direct✓ En stock
$2.35 / unité
Voir la fiche technique →ATSAMC21G15A-MUT
✅ Remplacement direct✓ En stock
$1.94 / unité
Voir la fiche technique →ATSAMC21G15A-MNT
✅ Remplacement direct✓ En stock
$2.3 / unité
Voir la fiche technique →ATSAMC21G17A-AUT
✅ Remplacement direct✓ En stock
$2.78 / unité
Voir la fiche technique →ATSAMC21G17A-MUT Valeurs maximales et caractéristiques électriques
| Core Architecture | ARM Cortex-M0+ |
| Core Count | Single-core |
| Maximum CPU Clock | 48 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| EEPROM Emulation Flash | 4 KB (independent self-programmable) |
| SRAM | 16 KB |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Température de fonctionnement | -40C to +85C (MUT grade) |
| Boîtier | 48-pin QFN (7x7 mm) |
| Type de montage | Surface Mount |
| Programmable I/O Pins | Up to 38 |
| DAC | 10-bit, 350 ksps, 1 channel |
| Analog Comparators | 4 with window compare function |
| Peripheral Touch Controller | 256-channel capacitive touch/proximity sensing |
| Communication Peripherals | SERCOM (I2C/SPI/UART), CAN-FD |
| Hardware Multiplier | Single-cycle |
| Trace | Micro Trace Buffer (MTB) |
| Memory Protection Unit (MPU) | Yes |
| Internal Oscillator | 48 MHz (factory-trimmed) |
| Statut RoHS | Compliant (Green) |
Configuration des broches de ATSAMC21G17A-MUT
| Broche 1 | PA00 — GPIO/SERCOM/I2C/SPI/UART/ADC |
| Broche 2 | PA01 — GPIO/SERCOM/ADC |
| Broche 3 | PA02 — GPIO/AIN0/DAC output |
| Broche 4 | PA03 — GPIO/AIN1/REF |
| Broche 5 | PA04 — GPIO/AIN2/VREFA |
| Broche 6 | PA05 — GPIO/AIN3 |
| Broche 7 | PA06 — GPIO/AIN4 |
| Broche 8 | PA07 — GPIO/AIN5 |
| Broche 9 | VDDIO — I/O supply voltage (2.7V-5.5V) |
| Broche 10 | GND — Ground |
| Broche 11 | PA08 — GPIO/SERCOM/I2C |
| Broche 12 | PA09 — GPIO/SERCOM/I2C |
| Broche 13 | PA10 — GPIO/SERCOM/I2C |
| Broche 14 | PA11 — GPIO/SERCOM/I2C |
| Broche 15 | VDDIN — Voltage regulator input |
| Broche 16 | GND — Ground |
| Broche 17 | PA12 — GPIO/PTC/SERCOM |
| Broche 18 | PA13 — GPIO/PTC/SERCOM |
| Broche 19 | PA14 — GPIO/PTC/SERCOM/XCK |
| Broche 20 | PA15 — GPIO/PTC/SERCOM |
| Broche 21 | PA16 — GPIO/PTC/SERCOM/I2C |
| Broche 22 | PA17 — GPIO/PTC/SERCOM/I2C |
| Broche 23 | PA18 — GPIO/PTC/SERCOM |
| Broche 24 | PA19 — GPIO/PTC/SERCOM |
| Broche 25 | PA20 — GPIO/PTC/SERCOM |
| Broche 26 | PA21 — GPIO/PTC/SERCOM |
| Broche 27 | PA22 — GPIO/PTC/SERCOM |
| Broche 28 | PA23 — GPIO/PTC/SERCOM |
| Broche 29 | PA24 — GPIO/PTC/SERCOM |
| Broche 30 | PA25 — GPIO/PTC/SERCOM |
| Broche 31 | PB02 — GPIO/SERCOM/ADC |
| Broche 32 | PB03 — GPIO/SERCOM/ADC |
| Broche 33 | PB08 — GPIO/SERCOM/I2C |
| Broche 34 | PB09 — GPIO/SERCOM/I2C |
| Broche 35 | PA27 — GPIO/CAN-FD/I2C |
| Broche 36 | PA28 — GPIO/RESET (default) |
| Broche 37 | GND — Ground |
| Broche 38 | VDDIO — I/O supply voltage (2.7V-5.5V) |
| Broche 39 | PB10 — GPIO/SERCOM/I2C |
| Broche 40 | PB11 — GPIO/SERCOM/I2C |
| Broche 41 | PB12 — GPIO/SERCOM/I2C |
| Broche 42 | PB13 — GPIO/SERCOM/I2C |
| Broche 43 | PB14 — GPIO/SERCOM/I2C |
| Broche 44 | PB15 — GPIO/SERCOM/I2C |
| Broche 45 | PB16 — GPIO/SERCOM/I2C |
| Broche 46 | PB17 — GPIO/SERCOM/I2C |
| Broche 47 | PB22 — GPIO/SERCOM/I2C |
| Broche 48 | PB23 — GPIO/SERCOM/I2C |
Applications typiques
ATSAMC21G17A-MUT convient pour 6 applications: Industrial CAN-FD Sensor Node, Capacitive Touch User Interface, Building Automation Controller, Motor Control Subsystem, Appliance Control Board (IEC 60730 Class B), 5V Industrial Communication Bridge.
Industrial CAN-FD Sensor Node
The ATSAMC21G17A-MUT is purpose-built for industrial CAN-FD sensor nodes where 5V tolerance and protocol bandwidth matter most. Its integrated CAN-FD controller supports data rates up to 8 Mbps, enabling high-throughput distributed sensor arrays in factory automation. The 48 MHz Cortex-M0+ core delivers ample processing for CANopen or J1939 stack execution while keeping power consumption low. The 2.7V-5.5V input range eliminates the level shifters typically required when interfacing to legacy 5V sensors, reducing BOM cost and PCB area.
Recommandé
Capacitive Touch User Interface
The ATSAMC21G17A-MUT's integrated Peripheral Touch Controller with up to 256 channels makes it ideal for capacitive touch user interfaces in appliances, white goods, and industrial HMI panels. The PTC performs hardware-accelerated capacitive scanning autonomously, freeing the Cortex-M0+ core for UI logic, display rendering, and communication tasks. Its 5V I/O tolerance allows direct interface to legacy LED and segment display drivers. Designers should follow Microchip application note AT11481 for PCB layout rules on touch sensors and water-tolerant button design.
Recommandé
Building Automation Controller
In building automation controllers for HVAC, lighting, and access control, the ATSAMC21G17A-MUT combines 5V tolerance, CAN-FD networking, and analog peripherals in a single 7x7 mm QFN. Its 128 KB Flash accommodates BACnet, Modbus, or KNX protocol stacks alongside application logic, while the 10-bit DAC drives analog actuator signals. The integrated temperature sensor and four analog comparators with window compare simplify thermostat and security panel designs. The 85C industrial temperature rating supports most indoor installation environments without derating.
Recommandé
Motor Control Subsystem
The ATSAMC21G17A-MUT fits small BLDC or stepper motor control subsystems in industrial pumps, fans, and small appliances. The Cortex-M0+ core running at 48 MHz drives sensorless commutation algorithms via the integrated analog comparators and 10-bit ADC, while the SERCOM peripherals interface to gate drivers and Hall-effect sensors. Its 5V I/O tolerance simplifies interfacing to legacy 5V gate driver ICs without external level shifting, saving BOM cost and PCB area in compact motor control PCBs.
Recommandé
Appliance Control Board (IEC 60730 Class B)
The ATSAMC21G17A-MUT belongs to Microchip's Functional Safety (FuSa) family with documentation supporting IEC 60730 Class B for household appliances such as washing machines, dishwashers, and ovens. Its integrated MPU, hardware CRC, and dual-watchdog architecture simplify Class B certification. The 5V-tolerant I/O directly interfaces to triac drivers, relay coils, and legacy user-interface keypads. Combined with the 256-channel PTC, it supports capacitive touch control panels on high-end appliances where mechanical buttons are undesirable.
Recommandé
5V Industrial Communication Bridge
The ATSAMC21G17A-MUT operates as a 5V industrial communication bridge between legacy RS-485, CAN 2.0B, and CAN-FD networks. Its multiple SERCOM peripherals configured as UARTs, plus the integrated CAN-FD controller, enable multi-protocol gateway designs in a single chip. The 128 KB Flash supports Modbus RTU, CANopen, and proprietary protocol stacks simultaneously. Its 5V tolerance eliminates level-translation circuitry when interfacing to legacy 5V transceivers common in factory-floor equipment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAMC21G17A-MUT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAMC21G17A-MUTS2 | ATSAMC21G16A-AUT | ATSAMC21G15A-MUT | ATSAMC21G15A-MNT | ATSAMC21G17A-AUT |
|---|---|---|---|---|---|---|
| Package | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) - same | 48-TQFP - differs | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-TQFP - differs |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash | 128 KB | 128 KB | 64 KB | 32 KB | 32 KB | 128 KB |
| SRAM | 16 KB | 16 KB | 8 KB | 4 KB | 4 KB | 16 KB |
| Maximum CPU Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V |
| CAN-FD | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Principaux différenciateurs
- Native 5V tolerance with CAN-FD (vs ATSAMD21G17D-MUT)
- 256-channel Peripheral Touch Controller (vs ATSAMC20G18A-ANT)
- 128 KB Flash in smallest QFN (vs ATSAMC21G15A-MUT)
Notes de conception
Power decoupling for the ATSAMC21G17A-MUT requires one 100 nF ceramic capacitor on each VDD/VDDIO pin and a bulk 4.7 uF X7R capacitor near the VDDIN pin. The internal 1.2V LDO is fed from VDDIN and powers the core; an inadequate bulk capacitor causes VDDIN droop under DMA bursts that can trigger BOR resets. Use 0402 or 0603 ceramic caps placed within 3 mm of the respective pins.
The 48-QFN exposed thermal pad must be soldered to a copper pour connected to GND for both thermal dissipation and electrical reference. Use an array of thermal vias (8-12 vias, 0.3 mm drill, 0.65 mm pitch) under the pad to conduct heat to an inner ground plane. Estimated: at 48 MHz and full peripheral use, core current is roughly 25-35 mA, dissipating approximately 40 mW; thermal rise is negligible for industrial-grade designs.
Do not leave the SWDIO/SWDCLK pins floating during production - configure them as GPIO with internal pull-up in firmware to avoid parasitic current draw. Also, the CAN-FD peripheral requires the CAN bus transceiver supply (typically 5V) to be stable before the MCU initializes the CAN module, otherwise the CAN-FD state machine may lock up. Implement a 50 ms power-on delay before CAN-FD initialization per Microchip errata sheet.
For capacitive touch designs using the PTC, route X and Y sensor traces as parallel pairs with consistent width (typically 0.2-0.3 mm) and spacing (0.5-1.0 mm). Ground-fill should be cut back from sensor traces by at least 5 mm to prevent loading effects. Keep sensor traces away from switching power supply traces to prevent noise injection; see Microchip application note AT11481 for detailed touch layout guidelines.
Informations de conformité
Per Mouser listing the part is labeled 'GREEN' (Microchip's lead-free/halogen-free designation). AEC-Q100 not qualified - this is the industrial/consumer-grade MUT variant. For automotive-grade parts use ATSAMC21G17A-MUTVAO or contact Microchip. Functional Safety (FuSa) documentation supports IEC 60730 Class B appliance designs.
