ATSAMC21G17A-MUT - 48MHz Cortex-M0+ MCU 128KB Flash | Microchip
MPN: ATSAMC21G17A-MUT ✓ Hoạt độngATSAMC21G17A-MUT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ATSAMC21G17A-MUT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAMC21G17A-MUT (cùng hình factor và footprint) — khác nhau ở Package, DAC, Program Memory (Flash), SRAM, ADC.
ATSAMC21G17A-MUTS2
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMC21G16A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC21G15A-MUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC21G15A-MNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC21G17A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC21G17A-MUT Tỷ lệ tối đa & tính chất điện
| 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 |
| Nhiệt độ hoạt động | -40C to +85C (MUT grade) |
| Hộp | 48-pin QFN (7x7 mm) |
| Kiểu lắp đặt | 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) |
| Trạng thái RoHS | Compliant (Green) |
Cấu hình chân ATSAMC21G17A-MUT
| Chân 1 | PA00 — GPIO/SERCOM/I2C/SPI/UART/ADC |
| Chân 2 | PA01 — GPIO/SERCOM/ADC |
| Chân 3 | PA02 — GPIO/AIN0/DAC output |
| Chân 4 | PA03 — GPIO/AIN1/REF |
| Chân 5 | PA04 — GPIO/AIN2/VREFA |
| Chân 6 | PA05 — GPIO/AIN3 |
| Chân 7 | PA06 — GPIO/AIN4 |
| Chân 8 | PA07 — GPIO/AIN5 |
| Chân 9 | VDDIO — I/O supply voltage (2.7V-5.5V) |
| Chân 10 | GND — Ground |
| Chân 11 | PA08 — GPIO/SERCOM/I2C |
| Chân 12 | PA09 — GPIO/SERCOM/I2C |
| Chân 13 | PA10 — GPIO/SERCOM/I2C |
| Chân 14 | PA11 — GPIO/SERCOM/I2C |
| Chân 15 | VDDIN — Voltage regulator input |
| Chân 16 | GND — Ground |
| Chân 17 | PA12 — GPIO/PTC/SERCOM |
| Chân 18 | PA13 — GPIO/PTC/SERCOM |
| Chân 19 | PA14 — GPIO/PTC/SERCOM/XCK |
| Chân 20 | PA15 — GPIO/PTC/SERCOM |
| Chân 21 | PA16 — GPIO/PTC/SERCOM/I2C |
| Chân 22 | PA17 — GPIO/PTC/SERCOM/I2C |
| Chân 23 | PA18 — GPIO/PTC/SERCOM |
| Chân 24 | PA19 — GPIO/PTC/SERCOM |
| Chân 25 | PA20 — GPIO/PTC/SERCOM |
| Chân 26 | PA21 — GPIO/PTC/SERCOM |
| Chân 27 | PA22 — GPIO/PTC/SERCOM |
| Chân 28 | PA23 — GPIO/PTC/SERCOM |
| Chân 29 | PA24 — GPIO/PTC/SERCOM |
| Chân 30 | PA25 — GPIO/PTC/SERCOM |
| Chân 31 | PB02 — GPIO/SERCOM/ADC |
| Chân 32 | PB03 — GPIO/SERCOM/ADC |
| Chân 33 | PB08 — GPIO/SERCOM/I2C |
| Chân 34 | PB09 — GPIO/SERCOM/I2C |
| Chân 35 | PA27 — GPIO/CAN-FD/I2C |
| Chân 36 | PA28 — GPIO/RESET (default) |
| Chân 37 | GND — Ground |
| Chân 38 | VDDIO — I/O supply voltage (2.7V-5.5V) |
| Chân 39 | PB10 — GPIO/SERCOM/I2C |
| Chân 40 | PB11 — GPIO/SERCOM/I2C |
| Chân 41 | PB12 — GPIO/SERCOM/I2C |
| Chân 42 | PB13 — GPIO/SERCOM/I2C |
| Chân 43 | PB14 — GPIO/SERCOM/I2C |
| Chân 44 | PB15 — GPIO/SERCOM/I2C |
| Chân 45 | PB16 — GPIO/SERCOM/I2C |
| Chân 46 | PB17 — GPIO/SERCOM/I2C |
| Chân 47 | PB22 — GPIO/SERCOM/I2C |
| Chân 48 | PB23 — GPIO/SERCOM/I2C |
Ứng dụng tiêu biểu
ATSAMC21G17A-MUT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMC21G17A-MUT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Native 5V tolerance with CAN-FD (vsATSAMD21G17D-MUT)
- 256-channel Peripheral Touch Controller (vsATSAMC20G18A-ANT)
- 128 KB Flash in smallest QFN (vsATSAMC21G15A-MUT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
