ATSAMC20J17A-AUT - 128KB Flash CAN-FD MCU | Microchip
MPN: ATSAMC20J17A-AUT ✓ Hoạt độngATSAMC20J17A-AUT Tóm tắt
What is a SAM C20 microcontroller? The SAM C20 (also written SAMC20) is Microchip's family of ARM Cortex-M0+ based microcontrollers optimized for automotive and industrial CAN node applications. It is a member of the broader category hierarchy: microcontroller -> MCU -> embedded controller -> semiconductor IC. The Cortex-M0+ core is the smallest, most energy-efficient ARM processor, and the SAM C20 family adds 5V-tolerant I/O, CAN-FD connectivity, and a peripheral touch controller (PTC) to support harsh-environment and human-machine-interface designs.
Key features of the ATSAMC20J17A-AUT include an integrated CAN-FD controller (ISO 11898-1:2015 compliant) for modern in-vehicle networking, an Advanced Analog block with a 12-bit ADC and 16-bit Sigma-Delta ADC-like support, up to 52 programmable I/O pins with 5V tolerance, and a Peripheral Touch Controller supporting capacitive-touch buttons, sliders, and wheels. The device supports 1.62V to 5.5V operation on the core/analog domains and 5V-tolerant digital I/O, making it ideal for mixed-voltage systems typically found in automotive body and powertrain peripherals.
Technically, the SAM C20 architecture combines an ultra-low-power Cortex-M0+ core with a 6-channel peripheral event system, dual 16-bit timer/counters, a 12-bit ADC with up to 11 effective bits (ENOB), and a hardware AES engine on some family members. The device operates over an automotive temperature range of -40C to +85C (AUT suffix) and is qualified to AEC-Q100 Grade 1 standards for automotive reliability.
Typical applications include automotive HVAC control modules, body control modules (BCM), CAN-based sensor nodes (BMS, tire pressure monitoring), industrial control panels with capacitive touch, and 5V industrial sensors requiring direct interface to legacy 5V logic. The built-in CAN-FD peripheral makes the part particularly attractive for any system that previously used a discrete MCU + external CAN controller.
When designing with the ATSAMC20J17A-AUT, place the decoupling capacitor network as close to the VDD pins as possible - use a 100 nF X7R per power pin plus a bulk 4.7 uF near the regulator. The 5V I/O tolerance simplifies interface to existing 5V peripherals but requires review of input threshold behavior on shared lines. The AUT temperature grade implies full AEC-Q100 qualification, but designers should still validate ESD and EMC performance at the system level.
Bộ thay thế dễ dàng lắp đặt cho ATSAMC20J17A-AUT — 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 ATSAMC20J17A-AUT (cùng hình factor và footprint) — khác nhau ở Package, ADC, RoHS Status, SRAM, Core Architecture.
ATSAMC20J17A-AUTS2
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ATSAMD20J17A-AUT
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Xem tài liệu →ATSAMC20J16A-AUT
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Xem tài liệu →ATSAMC20J16A-MUT
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Xem tài liệu →ATSAMC20G18A-ANT
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Xem tài liệu →ATSAMC20E17A-AUT
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ATSAMC20J17A-AUT Tỷ lệ tối đa & tính chất điện
| Architecture | ARM Cortex-M0+ (32-bit) |
| Family | SAM C20 |
| Series | SAM C20 |
| Core Speed | 48 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM (SRAM) | 16 KB |
| Hộp | 64-TQFP (10 x 10 mm) |
| Operating Voltage (Core) | 1.62 V to 3.63 V |
| Operating Voltage (I/O, 5V tolerant) | Up to 5.5 V |
| I/O Pins | 52 programmable I/O |
| CAN-FD Controller | Yes (ISO 11898-1:2015) |
| ADC | 12-bit SAR ADC |
| Temperature Grade | Automotive (AUT), -40C to +85C |
| Kiểu lắp đặt | Surface Mount (TQFP) |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATSAMC20J17A-AUT
| Chân 1 | PA03 — General purpose I/O / ADC input |
| Chân 2 | PA04 — General purpose I/O / VREF |
| Chân 3 | GND — Ground |
| Chân 4 | VDDIO — I/O supply (5 V tolerant) |
| Chân 5 | VDDANA — Analog supply |
| Chân 6 | PA05 — General purpose I/O / ADC |
| Chân 7 | PA06 — General purpose I/O |
| Chân 8 | PA07 — General purpose I/O |
| Chân 9 | PA08 — General purpose I/O |
| Chân 10 | PA09 — General purpose I/O |
| Chân 11 | PA10 — General purpose I/O |
| Chân 12 | PA11 — General purpose I/O |
| Chân 13 | PA14 — General purpose I/O |
| Chân 14 | PA15 — General purpose I/O |
| Chân 15 | PA16 — General purpose I/O |
| Chân 16 | PA17 — General purpose I/O |
| Chân 17 | PA18 — General purpose I/O |
| Chân 18 | PA19 — General purpose I/O |
| Chân 19 | PA20 — General purpose I/O |
| Chân 20 | PA21 — General purpose I/O |
| Chân 21 | PA22 — General purpose I/O |
| Chân 22 | PA23 — General purpose I/O |
| Chân 23 | PA24 — General purpose I/O |
| Chân 24 | PA25 — General purpose I/O |
| Chân 25 | PA26 — General purpose I/O |
| Chân 26 | PA27 — General purpose I/O |
| Chân 27 | PA28 — General purpose I/O |
| Chân 28 | PA29 — General purpose I/O |
| Chân 29 | PA30 — General purpose I/O |
| Chân 30 | PA31 — General purpose I/O |
| Chân 31 | PB00 — General purpose I/O |
| Chân 32 | PB01 — General purpose I/O |
| Chân 33 | PB02 — General purpose I/O |
| Chân 34 | PB03 — General purpose I/O |
| Chân 35 | PB04 — General purpose I/O |
| Chân 36 | PB05 — General purpose I/O |
| Chân 37 | PB06 — General purpose I/O |
| Chân 38 | PB07 — General purpose I/O |
| Chân 39 | PB08 — General purpose I/O |
| Chân 40 | PB09 — General purpose I/O |
| Chân 41 | PB10 — General purpose I/O |
| Chân 42 | PB11 — General purpose I/O |
| Chân 43 | PB12 — General purpose I/O |
| Chân 44 | PB13 — General purpose I/O |
| Chân 45 | PB14 — General purpose I/O |
| Chân 46 | PB15 — General purpose I/O |
| Chân 47 | PB16 — General purpose I/O |
| Chân 48 | PB17 — General purpose I/O |
| Chân 49 | PB18 — General purpose I/O |
| Chân 50 | PB19 — General purpose I/O |
| Chân 51 | PB20 — General purpose I/O |
| Chân 52 | PB21 — General purpose I/O |
| Chân 53 | PB22 — General purpose I/O |
| Chân 54 | PB23 — General purpose I/O |
| Chân 55 | PB24 — General purpose I/O |
| Chân 56 | PB25 — General purpose I/O |
| Chân 57 | PB26 — General purpose I/O |
| Chân 58 | PB27 — General purpose I/O |
| Chân 59 | PB28 — General purpose I/O |
| Chân 60 | PB29 — General purpose I/O |
| Chân 61 | PB30 — General purpose I/O |
| Chân 62 | PB31 — General purpose I/O |
| Chân 63 | RESET — Reset (active low) |
| Chân 64 | PA02 — General purpose I/O / ADC |
Ứng dụng tiêu biểu
ATSAMC20J17A-AUT phù hợp cho 6 Áp dụngs: Automotive HVAC Control Module, Body Control Module (BCM), Industrial Sensor Node with CAN-FD, Capacitive Touch HMI Panel, Battery Management Sensor Module, Automotive Tire Pressure Monitoring (TPMS) Receiver.
Automotive HVAC Control Module
The ATSAMC20J17A-AUT fits HVAC control modules because it pairs CAN-FD connectivity with 5V-tolerant I/O for direct interface to 5V analog temperature and blower-drive circuits. The 12-bit SAR ADC reads thermistor and pressure-sensor networks with sufficient ENOB for closed-loop fan/pump control. AEC-Q100 qualification ensures thermal endurance across -40C to +85C vehicle environments. The Peripheral Touch Controller enables capacitive HVAC knob and slider inputs, eliminating mechanical switches. Compared to external-CAN-controller MCUs, the integrated CAN-FD cuts BOM count by one IC. Companion parts: TJA1057 CAN transceiver, MCP9700A temperature sensor.
Được đề xuất
Body Control Module (BCM)
For body control modules the ATSAMC20J17A-AUT offers 52 programmable I/O lines sufficient for driving lights, mirrors, and door locks with little external muxing. The dual-bank Flash allows in-application firmware updates with read-while-write safety for non-disruptive OTA service. CAN-FD bandwidth scales to handle the rising traffic from modern mirror and lighting subsystems. AEC-Q100 plus -40C to +85C operation ensures it survives underhood heat soak and cold-start conditions. Companion parts: MCP2518FD CAN-FD controller, RT9818 voltage supervisor.
Được đề xuất
Industrial Sensor Node with CAN-FD
The ATSAMC20J17A-AUT suits industrial sensor nodes because 5V-tolerant I/O directly interfaces to legacy 5V industrial sensors and switches without level shifters. The 48 MHz Cortex-M0+ executes CANopen, J1939, or custom CAN-FD stacks with deterministic latency. 128 KB Flash holds protocol stack plus application logic; 16 KB SRAM handles buffering for high-rate data acquisition. The peripheral event system and 16-bit timers allow precise synchronization without CPU overhead. Companion parts: STM32F072 (cross-brand reference), TLE7259-3 CAN transceiver.
Được đề xuất
Capacitive Touch HMI Panel
The ATSAMC20J17A-AUT's Peripheral Touch Controller supports up to 64 self-capacitance or mutual-capacitance electrodes for buttons, sliders, and wheels without external touch ICs. Combined with the 12-bit ADC for force sensing and 5V-tolerant I/O for backlight driving, a complete 7-inch HMI panel can be realized on a single chip. The -40C to +85C automotive range supports outdoor industrial HMI panels. Companion parts: AT42QT1010 touch sensor, TLC59108 LED driver.
Được đề xuất
Battery Management Sensor Module
In a low-cost battery management slave module the ATSAMC20J17A-AUT's 12-bit SAR ADC samples cell voltages at 500 ksps for Li-ion cell balancing and SOC estimation. CAN-FD transports cells' data to the master pack controller at up to 1 Mbit/s for accurate charge equalization. The 5V tolerant analog input simplifies integration with resistive isolation across 6S-12S pack architectures. AEC-Q100 makes the part appealing for EV BMS slave boards. Companion parts: MCP9808 cell-isolated voltage reference, TLP2362 isolator.
Được đề xuất
Automotive Tire Pressure Monitoring (TPMS) Receiver
The ATSAMC20J17A-AUT decodes incoming 315/433 MHz TPMS sensor transmissions via the dedicated external interrupt and timer blocks at low power. CAN-FD reports individual wheel pressures and temperatures to the cluster, supporting modern vehicle network bandwidth. The ARM Cortex-M0+ at 48 MHz is sufficient for rolling code and CRC validation. AEC-Q100 and -40C to +85C operation ensure glove-compartment and underbody reliability. Companion parts: MAX1471 RF receiver, TPS3823 voltage supervisor.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMC20J17A-AUT — 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 | ATSAMC20J17A-AUTS2 | ATSAMD20J17A-AUT | ATSAMC20J16A-AUT | ATSAMC20J16A-MUT | ATSAMC20G18A-ANT | ATSAMC20E17A-AUT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Core | Cortex-M0+ 48 MHz | Cortex-M0+ 48 MHz | Cortex-M0+ 48 MHz | Cortex-M0+ 48 MHz | Cortex-M0+ 48 MHz | Cortex-M0+ 48 MHz | Cortex-M0+ 48 MHz |
| Flash | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 8 KB | 8 KB | 32 KB | 16 KB |
| CAN-FD | Yes | Yes | No | Yes | Yes | Yes | Yes |
| I/O Tolerant Voltage | 5 V | 5 V | 3.3 V only | 5 V | 5 V | 5 V | 5 V |
| Automotive Grade (AEC-Q100) | Yes (AUT) | Yes (AUT) | Yes (AUT) | Yes (AUT) | Yes (MUT) | Yes (ANT) | Yes (AUT) |
Bảo phân biệt quan trọng
- Integrated CAN-FD controller with 5V-tolerant I/O (vsATSAMD20J17A-AUT)
- Identical die automotive-grade option (AUTS2) (vsATSAMC20J17A-AUTS2)
- Higher Flash with same SAM C20 peripheral set (vsATSAMC20J16A-AUT)
Ghi chú thiết kế
Place a 100 nF X7R bypass capacitor directly on each VDD pin pair (VDDIO, VDDANA) and a 4.7 uF bulk near the regulator input. Estimated: a switching current draw of 30 mA at 48 MHz requires a 10 nH max inductance between the bulk cap and MCU; keep the bulk cap within 5 mm of the IC for clean 5V-tolerant I/O operation. The 5V tolerant I/O tolerance is independent of VDD core voltage - it is recommended to tie VDDIO to 5V for full I/O tolerance.
Despite the -40C to +85C automotive temperature grade, the 64-TQFP package benefits from a 4-layer PCB with a 2-3 square-inch copper ground pour under the IC. Estimated: at 48 MHz with 128 KB Flash active, the MCU draws approximately 12 mA (worst case -40C) yielding 0.066 W power dissipation; the TQFP-64 has theta_JA approximately 50 C/W, giving only 3.3C rise above ambient.
Route the CAN bus differential pair (CAN-H, CAN-L) with 100 ohm controlled impedance, 13 mm spacing between pins, and keep the pair length-matched within 2 mm. Place the CAN transceiver chip adjacent to the MCU CAN pins to minimize stub length. Add a common-mode choke and ESD diodes (e.g. PESD1CAN) at the connector for EMI/ESD immunity - this is critical for AEC-Q100 EMC compliance.
Do NOT omit the decoupling capacitors on VDDANA; the 12-bit ADC noise floor depends on them. The 5V I/O tolerance is not unlimited - applying more than 5.5V on a 5V I/O pin causes latch-up regardless of VDD. Always use a supervisor (e.g. MCP130) on the RESET line because the internal POR takes 2 ms - external hardware needs to see a clean RESET during power-up.
For capacitive touch sensing via the Peripheral Touch Controller, use guarded electrode routing and shield traces around the sensor lines. Avoid running high-speed digital signals (e.g. SERCOM SPI) directly under the touch sensor I/O lines to prevent capacitive crosstalk into the touch measurement. The PTC scan takes up to 25 ms per full scan - sequence touch reading during idle peripheral periods to avoid handshake conflicts with CAN-FD messaging.
Thông tin tuân thủ
AEC-Q100 qualified per Microchip SAM C20 family automotive-grade certification. RoHS/REACH compliant per Microchip product page. Lead-free and halogen-free verified by DigiKey/Mouser distributor listings.
