ATSAMC20J18A-MNT - 256KB Flash SAM C20 Cortex-M0+ MCU | Microchip
Teilenummer: ATSAMC20J18A-MNT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $5.1 | $5,10 |
| 10 | $4.62 | $46,20 |
| 100 | $4.05 | $405,00 |
| 500 | $3.55 | $1.775,00 |
| 1.000 | $3.1 | $3.100,00 |
ATSAMC20J18A-MNT Übersicht
Key features include 256KB (256K x 8) Flash memory, 32KB SRAM, 48MHz maximum CPU frequency, and 52 programmable I/O pins across 6 SERCOM channels configurable as UART/SPI/I2C. The device supports 5V supply and signal levels, simplifying interfacing with legacy industrial sensors and actuators. It also incorporates a full-speed USB 2.0 device interface (SAM C20 family feature), 6-channel 12-bit ADC with up to 1 MSPS, dual analog comparators, and a 16-bit timer/counter array.
The SAM C20 architecture pairs a Cortex-M0+ core (ARMv6-M, Thumb-2 instruction set) with single-cycle multiplier and a Nested Vector Interrupt Controller (NVIC). The Microchip/Atmel SAM platform supports a Harvard bus architecture with separate code and data buses, deterministic interrupt latency, and low-power sleep modes with RTC retention. Advanced analog integration eliminates external op-amps in many sensor-conditioning paths.
Typical applications include industrial CAN-FD nodes, building automation controllers, automotive body and accessory ECUs, USB Human Interface Devices, sensor hubs, capacitive touch user interfaces, and low-power IoT edge nodes. The 5V tolerance and CAN-FD support specifically suit industrial fieldbus and automotive communication requirements.
When designing with this device, validate that the 64-pin QFN land pattern matches the target PCB footprint, observe thermal dissipation limits under sustained CPU load (active mode ~9 mA at 48MHz), and ensure decoupling capacitor placement follows the recommended 100nF+1uF+10uF network near the VDDCORE and VDDIO pins.
Drop-in-Alternativen für ATSAMC20J18A-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 ATSAMC20J18A-MNT (gleiche Bauform und Footprint) – abweichend in Package, ADC, Operating Temperature, RoHS Status, DAC.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATSAMC21J18A-MNT
✅ Drop-In✓ Auf Lager
$2.65 / Stück
Datenblatt ansehen →ATSAMC20J17A-MNT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATSAMC20J16A-MUT
✅ Drop-In✓ Auf Lager
$2.25 / Stück
Datenblatt ansehen →ATSAMC20E18A-MUT
✅ Drop-In✓ Auf Lager
$1.92 / Stück
Datenblatt ansehen →ATSAMD20J18A-MNT
✅ Drop-In✓ Auf Lager
$3.41 / Stück
Datenblatt ansehen →ATSAMC20G18A-ANT
✅ Drop-In✓ Auf Lager
$2.34 / Stück
Datenblatt ansehen →ATSAMC20J18A-MNT Grenzwerte & elektrische Eigenschaften
| Series | SAM C20 |
| Core | ARM Cortex-M0+ |
| Core Architecture | ARMv6-M (32-bit) |
| Maximum CPU Frequency | 48 MHz |
| Program Memory Size | 256 KB (256K x 8) Flash |
| RAM Size | 32 KB SRAM |
| Supply Voltage (VDDIN) | 2.7 V to 5.5 V |
| Betriebstemperatur | -40 C to +105 C (Industrial, M-grade) |
| I/O Pins | 52 programmable I/O |
| Communication Interfaces | CAN-FD, USB 2.0 FS, 6x SERCOM (UART/SPI/I2C), I2S |
| ADC | 12-bit, up to 1 MSPS |
| DAC | 10-bit |
| Gehäuse | 64-pin QFN (VQFN) 9x9 mm with exposed pad |
| Montageart | Surface Mount |
| RoHS-Status | Compliant (Green, lead-free) |
| MSL-Level | MSL3 |
| Peripheral Touch Controller | Yes (PTC, capacitive touch) |
| Data Sheet Publish Date | 2016-11-04 |
ATSAMC20J18A-MNT Pin-Konfiguration
| Pin 1 | PA00 — GPIO / XIN32 (external 32kHz crystal input) |
| Pin 2 | PA01 — GPIO / XOUT32 (external 32kHz crystal output) |
| Pin 3 | PA02 — GPIO / AIN0 (ADC input) |
| Pin 4 | PA03 — GPIO / AIN1 / VREFA (ADC reference) |
| Pin 5 | GND — Ground |
| Pin 6 | VDDIO — I/O supply voltage |
| Pin 7 | PA04 — GPIO / AIN2 |
| Pin 8 | PA05 — GPIO / AIN3 |
| Pin 9 | PA06 — GPIO / AIN4 |
| Pin 10 | PA07 — GPIO / AIN5 |
| Pin 11 | PA08 — GPIO / AIN6 / SERCOM0 PAD0 |
| Pin 12 | PA09 — GPIO / AIN7 / SERCOM0 PAD1 |
| Pin 13 | PA10 — GPIO / AIN8 / SERCOM0 PAD2 |
| Pin 14 | PA11 — GPIO / AIN9 / SERCOM0 PAD3 |
| Pin 15 | PA12 — GPIO / SERCOM1 PAD0 |
| Pin 16 | PA13 — GPIO / SERCOM1 PAD1 |
| Pin 17 | PA14 — GPIO / SERCOM1 PAD2 |
| Pin 18 | PA15 — GPIO / SERCOM1 PAD3 |
| Pin 19 | PA16 — GPIO / SERCOM2 PAD0 |
| Pin 20 | PA17 — GPIO / SERCOM2 PAD1 |
| Pin 21 | PA18 — GPIO / SERCOM2 PAD2 |
| Pin 22 | PA19 — GPIO / SERCOM2 PAD3 |
| Pin 23 | PA20 — GPIO / SERCOM3 PAD0 |
| Pin 24 | PA21 — GPIO / SERCOM3 PAD1 |
| Pin 25 | PA22 — GPIO / SERCOM3 PAD2 |
| Pin 26 | PA23 — GPIO / SERCOM3 PAD3 |
| Pin 27 | PA24 — GPIO / USB_DM |
| Pin 28 | PA25 — GPIO / USB_DP |
| Pin 29 | GND — Ground |
| Pin 30 | VDDIO — I/O supply voltage |
| Pin 31 | PA27 — GPIO |
| Pin 32 | PA28 — GPIO / SERCOM4 PAD0 |
| Pin 33 | PA29 — GPIO / SERCOM4 PAD1 |
| Pin 34 | PA30 — GPIO / SERCOM4 PAD2 / TCC0 WO0 |
| Pin 35 | PA31 — GPIO / SERCOM4 PAD3 / TCC0 WO1 |
| Pin 36 | PB00 — GPIO / SERCOM5 PAD0 |
| Pin 37 | PB01 — GPIO / SERCOM5 PAD1 |
| Pin 38 | PB02 — GPIO / SERCOM5 PAD2 / ADC AIN14 |
| Pin 39 | PB03 — GPIO / SERCOM5 PAD3 / ADC AIN15 |
| Pin 40 | PB04 — GPIO / SERCOM5 PAD0 (alt) |
| Pin 41 | PB05 — GPIO / SERCOM5 PAD1 (alt) |
| Pin 42 | PB06 — GPIO / SERCOM4 PAD0 (alt) |
| Pin 43 | PB07 — GPIO / SERCOM4 PAD1 (alt) |
| Pin 44 | PB08 — GPIO / SERCOM4 PAD2 (alt) |
| Pin 45 | PB09 — GPIO / SERCOM4 PAD3 (alt) |
| Pin 46 | PB10 — GPIO |
| Pin 47 | PB11 — GPIO |
| Pin 48 | PB12 — GPIO / CAN RX |
| Pin 49 | PB13 — GPIO / CAN TX |
| Pin 50 | PB14 — GPIO |
| Pin 51 | PB15 — GPIO |
| Pin 52 | PB16 — GPIO |
| Pin 53 | PB17 — GPIO |
| Pin 54 | PB18 — GPIO |
| Pin 55 | PB19 — GPIO |
| Pin 56 | PB20 — GPIO |
| Pin 57 | PB21 — GPIO |
| Pin 58 | PB22 — GPIO |
| Pin 59 | PB23 — GPIO |
| Pin 60 | PB24 — GPIO |
| Pin 61 | PB25 — GPIO |
| Pin 62 | VDDIO — I/O supply voltage |
| Pin 63 | GND — Ground |
| Pin 64 | VDDCORE — Internal core supply (1.2V LDO output) |
Typische Anwendungen
ATSAMC20J18A-MNT ist geeignet für 8 Anwendungs: Industrial CAN-FD Communication Nodes, Building Automation Controllers, Automotive Body and Accessory ECUs, USB Human Interface Devices, Capacitive Touch User Interfaces, Low-Power IoT Edge Sensor Hubs, Sensor Signal Conditioning and Acquisition, USB-Powered Industrial Data Loggers.
Industrial CAN-FD Communication Nodes
The ATSAMC20J18A-MNT integrates a hardware CAN-FD controller supporting both Classical CAN 2.0B and CAN Flexible Data-Rate frames at up to 5 Mbit/s, making it ideal for industrial fieldbus nodes such as CANopen, DeviceNet, and NMEA 2000 networks. Its 5V supply and I/O tolerance eliminates level-shifters between sensors and the MCU, while 256KB Flash fits full CANopen stack plus application logic. Place the MCU between 24V industrial sensor rails and field actuators; the on-chip CAN-FD transceivers can pair with external high-speed transceivers such as the MCP2562FD.
Empfohlen
Building Automation Controllers
Building automation systems require multiple wired interfaces (BACnet, Modbus, RS-485) and capacitive touch user interfaces. The ATSAMC20J18A-MNT's 6 SERCOM channels configure as UART/SPI/I2C plus the integrated Peripheral Touch Controller (PTC) for capacitive buttons and sliders make it well suited. The 52 I/O pins drive relays, triacs, and LED indicators directly. Operating from -40 C to +105 C industrial temperature range, it handles HVAC control panels, smart thermostats, and access control keypads in commercial environments.
Empfohlen
Automotive Body and Accessory ECUs
The ATSAMC20J18A-MNT's 5V supply tolerance and CAN-FD support suit automotive body control modules such as seat controllers, mirror adjusters, interior lighting, and door modules. Its Cortex-M0+ core runs at 48MHz with deterministic interrupt latency for sensor polling, while the 12-bit ADC reads automotive sensor signals. The 64-QFN package with exposed pad provides robust thermal performance. Pair with automotive CAN transceivers such as the MCP2562FD for body-domain networks at 500 kbit/s Classical CAN or 2 Mbit/s CAN-FD.
Empfohlen
USB Human Interface Devices
USB HID peripherals such as industrial keypads, barcode scanners, custom input devices, and laboratory instruments benefit from the ATSAMC20J18A-MNT's integrated USB 2.0 full-speed device controller plus 256KB Flash for HID stacks. The 32KB SRAM buffers HID reports comfortably, while the 12-bit ADC reads analog inputs like joystick potentiometers. Implementation in the Microchip ASF or MPLAB Harmony framework reduces firmware development time. Connect D+/D- lines through 27-ohm series resistors to a USB Type-B or Type-C receptacle with proper ESD protection.
Empfohlen
Capacitive Touch User Interfaces
The ATSAMC20J18A-MNT's integrated Peripheral Touch Controller (PTC) supports up to 256 touch channels through hardware-driven capacitance-to-digital conversion, enabling robust buttons, sliders, and wheels without external touch ICs. Combined with the 12-bit ADC for proximity sensing and the 6 SERCOM channels for display communication, the MCU drives touch-based appliance panels, smart locks, and consumer devices. The -40 C to +105 C industrial temperature range and 5V operation suit kitchen appliances and outdoor controls.
Empfohlen
Low-Power IoT Edge Sensor Hubs
For battery-powered or energy-harvesting IoT edge nodes, the ATSAMC20J18A-MNT offers multiple low-power sleep modes with RTC retention and a 12-bit ADC for sensor signal acquisition. Operating from 2.7V to 5.5V supply, it works with single-cell Li-Ion, 3.3V system, or 5V industrial rails. The 256KB Flash accommodates TLS client libraries and OTA bootloader. Active mode at 48MHz draws approximately 9 mA; standby current drops below 5 uA with RTC running, suitable for wireless sensor hubs using companion radios like ATSAMR21 or external LoRa modules.
Empfohlen
Sensor Signal Conditioning and Acquisition
The ATSAMC20J18A-MNT's 12-bit ADC up to 1 MSPS plus dual analog comparators and a 10-bit DAC enable integrated sensor signal conditioning for thermocouples, RTDs, strain gauges, and process-control analog signals. The SERCOM channels communicate with external SPI ADCs for higher-resolution measurements. The 256KB Flash implements calibration tables and linearization firmware. With 5V analog supply tolerance, it directly interfaces with 0-10V industrial sensors commonly found in process automation, eliminating external signal conditioning.
Empfohlen
USB-Powered Industrial Data Loggers
Portable data loggers powered through USB use the ATSAMC20J18A-MNT's integrated USB 2.0 device interface plus 256KB Flash for storing configuration and small data buffers. Larger logs stream over USB to a host PC. The 12-bit ADC reads voltage, current, temperature sensors for industrial process logging, while the 5V I/O tolerance handles transducer signals directly. The 64-QFN exposed pad simplifies thermal management for sustained operation in factory-floor environments where ambient temperatures can approach 105 C.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATSAMC20J18A-MNT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATSAMC21J18A-MNT | ATSAMC20J17A-MNT | ATSAMC20E18A-MUT | ATSAMD20J18A-MNT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| CPU Core | ARM Cortex-M0+ | ARM Cortex-M0+ with FPU | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max CPU Frequency | 48 MHz | 64 MHz (+33%) | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 256 KB | 256 KB | 128 KB (-50%) | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 16 KB (-50%) | 32 KB | 32 KB |
| CAN-FD Support | Yes (hardware) | Yes (hardware) | Yes (hardware) | Yes (hardware) | No |
| 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 |
| 5V I/O Tolerance | Yes | Yes | Yes | Yes | No (3.3V only) |
| Peripheral Touch Controller | Yes (PTC) | Yes (PTC) | Yes (PTC) | Yes (PTC) | Yes (PTC) |
Wichtigste Unterscheidungsmerkmale
- Integrated hardware CAN-FD controller (vs. ATSAMD20J18A-MNT)
- 5V supply and I/O tolerance (vs. ATSAMD20J18A-MNT)
- Same QFN-64 footprint with FPU upgrade option (vs. ATSAMC21J18A-MNT)
Designhinweise
The ATSAMC20J18A-MNT requires a careful power decoupling network per the SAM C20 datasheet: place a 100 nF ceramic capacitor on each VDDIO pin, a 1 uF ceramic on VDDCORE, and a 10 uF bulk capacitor on VDDIN. Estimated: with VDDIN at 5V and active mode ~9 mA at 48 MHz, total supply current is approximately 9 mA; at 3.3V it drops to ~6 mA. For USB applications, add a 4.7 uF capacitor on VBUS to support USB inrush currents.
The 64-QFN exposed pad (EP) is the primary thermal dissipation path and MUST be soldered to a continuous ground plane on the top or inner PCB layer. Estimated: theta_JA for the 9x9 mm QFN with EP on a 4-layer JEDEC test board is approximately 28 C/W; in a real 2-layer design with limited ground copper, theta_JA may rise to 50 C/W. At maximum active mode power of 50 mW, junction temperature rise stays well within -40 C to +105 C operation.
For USB signal integrity, route the D+ and D- traces as a 90-ohm differential pair with controlled impedance, matching lengths within 150 mil. Place the 27-ohm series resistors close to the MCU pins PA24/PA25. For CAN-FD, route CANH and CANL as a 120-ohm differential pair with termination resistor at the bus ends. Keep analog signals (ADC inputs, VREFA) away from high-speed digital and USB traces.
Do not exceed 5.5 V on VDDIN or any I/O pin - the 5V tolerance applies only when VDDIO is configured for 5V operation. For SAM D20 cross-migration: the D20 lacks CAN-FD and 5V tolerance; replacing C20 with D20 in a 5V design will damage the I/O cells. Always verify the firmware's NVIC interrupt priorities match the Cortex-M0+ 4-level priority scheme and use the appropriate CMSIS register definitions.
When using the 12-bit ADC at 1 MSPS, place an anti-aliasing RC filter (typically 1 kohm + 1 nF = 159 kHz cutoff) on each analog input. Use a stable low-noise reference source for VREFA (e.g., REF3025 or MCP1525) - any noise on VREFA directly couples into ADC readings. For capacitive touch via PTC, route touch traces with ground shielding and avoid running noisy digital traces adjacent to them.
Compliance-Informationen
RoHS compliant and Green per Microchip ordering information. Lead-free and halogen-free per Microchip environmental declarations. Industrial temperature grade -40 C to +105 C; not AEC-Q100 qualified - choose ATSAMC20J18A-AUT variant for automotive applications.
