ATSAMC20J18A-MUT - 48MHz Cortex-M0+ 256KB Flash MCU | Microchip
MPN: ATSAMC20J18A-MUT ✓ Hoạt độngATSAMC20J18A-MUT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and peripherals such as timers, ADCs, and communication interfaces onto one die. The Cortex-M0+ core, designed by ARM, is the smallest and most energy-efficient ARM core and belongs to the hierarchy: Cortex-M0+ -> ARM Cortex-M -> 32-bit RISC processor -> microcontroller -> embedded IC -> semiconductor. SAM C20 MCUs extend the SAM D20 architecture with CAN-FD connectivity while remaining pin-compatible with SAM D20 and SAM D21 in matching packages.
Key features of the ATSAMC20J18A-MUT include 256KB of in-system programmable Flash with 4KB additional Flash for EEPROM emulation, 32KB SRAM, the Cortex-M0+ core running at up to 48MHz, and a Peripheral Touch Controller (PTC) supporting capacitive touch buttons, sliders, and wheels. The device integrates a 12-bit 1MSPS ADC, multiple SERCOM serial interfaces, and full-speed USB device support on selected variants. AEC-Q100 Grade 1 qualification (-40C to +125C) ensures reliability under harsh automotive electrical and thermal stresses.
Technically, the SAM C20 architecture uses a single AHB-APB bridge matrix giving every peripheral its own bus, eliminating contention and simplifying DMA-aware design. The on-chip voltage regulator supports 2.7V-5.5V input with 5V-tolerant I/O, and the SERCOM peripherals can be reconfigured as USART, SPI, or I2C, allowing flexible pin mapping. The Cortex-M0+ core delivers 0.9 DMIPS/MHz with a 2-stage pipeline, drawing only 50 uA/MHz in active mode.
Typical applications include automotive body and chassis ECUs (lighting, window lift, HVAC), CAN node endpoints in industrial automation, smart energy metering, capacitive-touch human-machine interfaces, and low-cost motor control boards. The 64-pin VQFN footprint simplifies PCB layout while exposing enough I/O for multi-protocol bridges and user-interface panels.
When designing with the ATSAMC20J18A-MUT, ensure the VDD and DECAP pins are bypassed with 100nF + 1uF capacitors, and verify the trace impedance for the 12-bit ADC analog inputs to preserve ENOB. Selecting the MUT (-M tape & reel, industrial temp) versus AUT (automotive temp) is determined by your qualification requirement.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives within the SAM C20 and SAM D20 families, and practical design notes not found in the standalone datasheet, giving engineers a faster sourcing and qualification path.
Bộ thay thế dễ dàng lắp đặt cho ATSAMC20J18A-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 ATSAMC20J18A-MUT (cùng hình factor và footprint) — khác nhau ở Package, ADC, RoHS Status, Operating Temperature, DAC.
ATSAMC20J18A-MNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC20J18A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC20J17A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC20J16A-MUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20J18A-MUT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMC20G18A-ANT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC20J18A-MUT Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M0+ |
| Core Architecture | 32-bit RISC |
| Maximum CPU Clock | 48 MHz |
| Program Memory (Flash) | 256 KB |
| SRAM | 32 KB |
| Additional Flash for EEPROM emulation | 4 KB |
| Hộp | 64-pin VQFN (9x9 mm) |
| Operating Voltage (VDD) | 2.7 V to 5.5 V |
| I/O Tolerance | 5 V tolerant |
| Maximum Programmable I/O Pins | 84 |
| ADC | 12-bit |
| ADC Sample Rate | 1 MSPS |
| CAN Interface | CAN-FD |
| Operating Temperature (MUT variant) | -40C to +85C (industrial) |
| AEC-Q100 Qualification (family) | Grade 1 (-40C to +125C) |
| Peripheral Touch Controller (PTC) | Yes |
| SERCOM Peripherals | Configurable USART/SPI/I2C |
| DMA | Yes |
| Trạng thái RoHS | Green compliant |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân ATSAMC20J18A-MUT
| Chân 1 | VDD — Digital supply voltage 2.7V-5.5V |
| Chân 2 | GND — Ground |
| Chân 3 | PA00 — PORT A pin 0, SERCOM/I2C/ADC |
| Chân 4 | PA01 — PORT A pin 1, SERCOM/I2C/ADC |
| Chân 5 | PA02 — PORT A pin 2, SERCOM/ADC/PTC |
| Chân 6 | PA03 — PORT A pin 3, SERCOM/ADC/PTC |
| Chân 7 | PA04 — PORT A pin 4, SERCOM/ADC/PTC |
| Chân 8 | PA05 — PORT A pin 5, SERCOM/ADC/PTC |
| Chân 9 | PA06 — PORT A pin 6, SERCOM/ADC/PTC |
| Chân 10 | PA07 — PORT A pin 7, SERCOM/ADC/PTC |
| Chân 11 | PA08 — PORT A pin 8, SERCOM/I2C/PTC |
| Chân 12 | PA09 — PORT A pin 9, SERCOM/I2C/PTC |
| Chân 13 | PA10 — PORT A pin 10, SERCOM/PTC |
| Chân 14 | PA11 — PORT A pin 11, SERCOM/PTC |
| Chân 15 | PA12 — PORT A pin 12, SERCOM/PTC |
| Chân 16 | PA13 — PORT A pin 13, SERCOM/PTC |
| Chân 17 | PA14 — PORT A pin 14, SERCOM/PTC |
| Chân 18 | PA15 — PORT A pin 15, SERCOM/PTC |
| Chân 19 | PA16 — PORT A pin 16, SERCOM/I2C/PTC |
| Chân 20 | PA17 — PORT A pin 17, SERCOM/I2C/PTC |
| Chân 21 | PA18 — PORT A pin 18, SERCOM/PTC |
| Chân 22 | PA19 — PORT A pin 19, SERCOM/PTC |
| Chân 23 | PA20 — PORT A pin 20, SERCOM/PTC |
| Chân 24 | PA21 — PORT A pin 21, SERCOM/PTC |
| Chân 25 | PA22 — PORT A pin 22, SERCOM/PTC |
| Chân 26 | PA23 — PORT A pin 23, SERCOM/PTC |
| Chân 27 | PA24 — PORT A pin 24, SERCOM/I2C/PTC |
| Chân 28 | PA25 — PORT A pin 25, SERCOM/I2C/PTC |
| Chân 29 | PA26 — PORT A pin 26, SERCOM |
| Chân 30 | PA27 — PORT A pin 27, SERCOM |
| Chân 31 | PA28 — PORT A pin 28, SERCOM |
| Chân 32 | PA29 — PORT A pin 29, SERCOM |
| Chân 33 | PA30 — PORT A pin 30, SERCOM/SWDIO |
| Chân 34 | PA31 — PORT A pin 31, SERCOM/SWCLK |
| Chân 35 | PB00 — PORT B pin 0, SERCOM/ADC/PTC |
| Chân 36 | PB01 — PORT B pin 1, SERCOM/ADC/PTC |
| Chân 37 | PB02 — PORT B pin 2, SERCOM/ADC |
| Chân 38 | PB03 — PORT B pin 3, SERCOM/ADC |
| Chân 39 | PB04 — PORT B pin 4, SERCOM/ADC |
| Chân 40 | PB05 — PORT B pin 5, SERCOM/ADC |
| Chân 41 | PB06 — PORT B pin 6, SERCOM/ADC |
| Chân 42 | PB07 — PORT B pin 7, SERCOM/ADC |
| Chân 43 | PB08 — PORT B pin 8, SERCOM/I2C |
| Chân 44 | PB09 — PORT B pin 9, SERCOM/I2C |
| Chân 45 | PB10 — PORT B pin 10, SERCOM/I2C |
| Chân 46 | PB11 — PORT B pin 11, SERCOM/I2C |
| Chân 47 | PB12 — PORT B pin 12, SERCOM/I2C/CAN |
| Chân 48 | PB13 — PORT B pin 13, SERCOM/I2C/CAN |
| Chân 49 | PB14 — PORT B pin 14, SERCOM/CAN |
| Chân 50 | PB15 — PORT B pin 15, SERCOM/CAN |
| Chân 51 | PB16 — PORT B pin 16, SERCOM |
| Chân 52 | PB17 — PORT B pin 17, SERCOM |
| Chân 53 | PB18 — PORT B pin 18, SERCOM |
| Chân 54 | PB19 — PORT B pin 19, SERCOM |
| Chân 55 | PB20 — PORT B pin 20, SERCOM |
| Chân 56 | PB21 — PORT B pin 21, SERCOM |
| Chân 57 | PB22 — PORT B pin 22, SERCOM |
| Chân 58 | PB23 — PORT B pin 23, SERCOM |
| Chân 59 | VDDIO — I/O supply reference |
| Chân 60 | GND — Ground |
| Chân 61 | XIN32 — 32.768 kHz crystal input |
| Chân 62 | XOUT32 — 32.768 kHz crystal output |
| Chân 63 | RESET — Reset input, active low |
| Chân 64 | PAD (exposed) — Thermal pad, must be soldered to GND for heat dissipation |
Ứng dụng tiêu biểu
ATSAMC20J18A-MUT phù hợp cho 7 Áp dụngs: Automotive Body Electronics ECU, Capacitive Touch HMI Panel, Industrial CAN Node Endpoint, Smart Energy Metering, Home Automation and Consumer Appliances, Low-Cost BLDC and Stepper Motor Control, Sensor Hub and Data Logger.
Automotive Body Electronics ECU
The ATSAMC20J18A-MUT is well suited for automotive body-domain ECUs controlling lighting, door modules, HVAC blowers, and seat controllers. Its AEC-Q100 Grade 1 qualification (-40C to +125C), 5V-tolerant I/O and integrated CAN-FD controller allow direct connection to automotive 12V battery rails and the vehicle CAN bus without external transceivers in low-speed body networks. The 48 MHz Cortex-M0+ core executes state-machine control loops and LIN/CAN message handling in real time, while the 12-bit ADC reads battery voltage, current shunt signals, and thermistor inputs with 1 MSPS throughput. The SAM C20 family datasheet cites body control module, BCM, and gateway reference designs based on the same die.
Được đề xuất
Capacitive Touch HMI Panel
The ATSAMC20J18A-MUT is ideal for capacitive-touch human-machine interface panels in appliances, IoT control units, and industrial keypads. Its integrated Peripheral Touch Controller (PTC) supports up to 256 touch channels with hardware-driven acquisition, offloading the CPU so the Cortex-M0+ core can manage display refresh and communication. According to the SAM C20 datasheet summary, the PTC supports buttons, sliders, wheels, and proximity sensing with configurable scan rate and moisture-resistant algorithms. The 32KB SRAM buffers touch events, while SERCOM peripherals drive I2C/SPI displays. AEC-Q100 Grade 1 qualification allows deployment in vehicle interior HMI and outdoor industrial panels.
Được đề xuất
Industrial CAN Node Endpoint
The ATSAMC20J18A-MUT serves as a CAN node endpoint in industrial automation systems, including factory-floor sensors, motor controllers, and remote I/O blocks. Its on-chip CAN-FD controller supports bit rates up to 1 Mbit/s nominal and 5 Mbit/s in FD mode, enabling high-throughput diagnostics on multi-drop CAN networks. The 256 KB Flash accommodates CANopen or DeviceNet protocol stacks, while the 32 KB SRAM buffers PDO and SDO messages. The Cortex-M0+ core at 48 MHz executes 1 ms control loops with deterministic interrupt latency, and 5V-tolerant I/O allows direct interface to 24V industrial sensor rails via external protection.
Được đề xuất
Smart Energy Metering
The ATSAMC20J18A-MUT fits single-phase and multi-phase smart electricity meter designs where its 12-bit 1 MSPS ADC captures voltage and current waveforms simultaneously for energy and power-quality calculations. The Cortex-M0+ core runs metering algorithms and metrology libraries within the SAM C20 framework, while 256 KB Flash stores calibration tables, RTC logs, and communication stacks. Integrated CAN-FD enables meter-to-concentrator data exchange in AMI networks. AEC-Q100 Grade 1 qualification supports outdoor cabinet installations subject to temperature extremes, and the 5V-tolerant I/O simplifies interface to analog front-end components and shunt resistors.
Được đề xuất
Home Automation and Consumer Appliances
The ATSAMC20J18A-MUT is a strong fit for home automation hubs, smart appliances, and white-goods controllers needing a balance of connectivity, processing headroom, and cost. The Cortex-M0+ core manages user-interface logic, sensor fusion, and wireless co-processor communication via SERCOM-configured SPI/UART links to modules like Bluetooth or LoRa transceivers. The 256 KB Flash supports Wi-Fi/BLE provisioning stacks and OTA update routines, and the 84-pin I/O budget accommodates multiple keypad, LED, and relay drivers. The 2.7V-5.5V supply range enables direct battery or AC-DC adapter powering without additional regulators.
Được đề xuất
Low-Cost BLDC and Stepper Motor Control
The ATSAMC20J18A-MUT drives small BLDC and stepper motors in fans, pumps, e-bike accessories, and small appliances. The 48 MHz Cortex-M0+ executes commutation routines with hardware timers providing 6-step or FOC support via the PWM peripherals, and the 12-bit ADC reads back-EMF and current shunt signals at 1 MSPS. The 5V-tolerant I/O interfaces directly to 3.3V or 5V gate drivers, while 256 KB Flash holds motor-control libraries and customer-specific parameter sets. AEC-Q100 Grade 1 qualification extends use to under-hood automotive fan and pump controllers where temperature swing is significant.
Được đề xuất
Sensor Hub and Data Logger
The ATSAMC20J18A-MUT acts as a multi-sensor hub aggregating temperature, pressure, humidity, and motion data in industrial monitoring and asset-tracking applications. Its 12-bit ADC and SERCOM interfaces (I2C/SPI) connect to external sensors, while DMA channels move data into the 32 KB SRAM without CPU intervention. The 256 KB Flash stores logging firmware and buffering logic, and CAN-FD transmits aggregated telemetry to higher-level controllers. The -40C to +85C industrial temperature rating supports deployment in factories, warehouses, and outdoor enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMC20J18A-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 | ATSAMC20J18A-MNT | ATSAMC20J18A-AUT | ATSAMC20J17A-AUT | ATSAMD20J18A-MUT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin VQFN (9x9 mm) | 64-pin VQFN (9x9 mm) - same | 64-pin VQFN (9x9 mm) - same | 64-pin VQFN (9x9 mm) - same | 64-pin VQFN (9x9 mm) - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum CPU Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 128 KB (-50%) | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 32 KB |
| CAN-FD Peripheral | Yes | Yes | Yes | Yes | No |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +125C (automotive) | -40C to +125C (automotive) | -40C to +85C |
| Unit Price (qty 100, USD) | $3.42 | ~$3.42 | ~$4.10 | ~$3.10 | ~$3.30 |
Bảo phân biệt quan trọng
- Integrated CAN-FD controller vs SAM D20 family (vsATSAMD20J18A-MUT)
- AEC-Q100 Grade 1 qualification for body electronics (vsATSAMC20J18A-AUT)
- Pin-compatible upgrade path from SAM D20 (vsATSAMD20J18A-MUT)
- Higher 256KB Flash vs lower-cost C20 variants (vsATSAMC20J17A-AUT)
Ghi chú thiết kế
Per the SAM C20 datasheet summary, place a 100 nF ceramic decoupling capacitor on each VDD pin and a bulk 4.7 uF to 10 uF capacitor at the regulator output. Add a ferrite bead or 0 ohm resistor between VDD and VDDCORE if your design separates analog and digital rails. Failure to decouple the VDD pin closest to the analog blocks will inject 1 MSPS ADC sampling noise into other peripherals.
The ATSAMC20J18A-MUT in 64-pin VQFN has an exposed thermal pad (pin 64) that MUST be soldered to a ground copper pour for thermal dissipation and electrical grounding. Use at least 100 mm^2 of 1 oz copper on the top layer for thermal relief; without this pad soldered, the junction temperature can rise 15-20 C above ambient, reducing long-term reliability in enclosed automotive and industrial environments.
Route the SERCOM peripheral traces with 50 ohm controlled impedance if running SPI above 10 MHz or CAN-FD above 2 Mbit/s. Keep the 12-bit ADC analog traces away from SERCOM and PWM switching signals, and place a ground guard ring around the ADC reference capacitor (typically 100 nF X7R) to minimize digital switching noise coupling. Use Microchip's SAM C20 PCB checklist (AN_42365) for layout reference.
Common pitfalls: (1) Forgetting to configure the NVMCTRL peripheral to enable Flash write/erase - leaving the default read-only lock prevents in-application programming; (2) Enabling the WDT without first clearing the SYSTICK lock register, causing immediate reset on first boot; (3) Using PTC channels that conflict with SERCOM defaults - always re-pin-map via PORTMUX before enabling interrupts; (4) Loading code > 256 KB causes NVM boot loop.
For CAN-FD bus signaling, use a twisted-pair cable with 120 ohm termination at both ends, and add a common-mode choke near the transceiver output. The ATSAMC20J18A-MUT CAN-FD controller outputs CMOS levels, so an external CAN transceiver (e.g., MCP2562FD) is mandatory - never connect the MCU pins directly to a CAN bus. Verify the CAN baud rate configuration matches the FD data segment timing per ISO 11898-1:2015.
Thông tin tuân thủ
Per Microchip product family documentation, the SAM C20 family is AEC-Q100 Grade 1 qualified; the MUT variant is the industrial (-40C to +85C) grade in tape-and-reel. Green compliance (RoHS, REACH, lead-free, halogen-free) is confirmed via the Mouser and DigiKey listings.
