ATSAMC20J16A-MUT - 48MHz Cortex-M0+ MCU 64KB Flash | Microchip
MPN： ATSAMC20J16A-MUT ✓ 啟用中ATSAMC20J16A-MUT 概覽
What is a microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and peripherals such as timers, communication interfaces, and analog blocks. The SAM C20 family uses the Cortex-M0+ core, the smallest and most energy-efficient ARM core, which offers deterministic interrupt response and a Thumb-2 instruction subset. Positioned in the product hierarchy, an MCU sits between simple microprocessors (MPUs without on-chip memory) and full System-on-Chips (SoCs). The C20 sub-family adds 5V-tolerant I/O and CAN-FD, distinguishing it from lower-voltage SAM D20 cousins.
Key features include the Peripheral Touch Controller (PTC) supporting capacitive touch sensing up to 256 buttons via the QTouch library, a 12-bit ADC with up to 12 channels and 1 MSPS conversion rate, a 10-bit DAC, up to six SERCOM (serial communication) interfaces configurable as UART/SPI/I2C, and a full-speed USB 2.0 device interface. The Event System allows inter-peripheral signaling without CPU intervention, lowering latency and power. Hardware AES and True Random Number Generator (TRNG) provide security primitives for connected nodes. The Cortex-M0+ core consumes only 50 uA/MHz active and supports Sleep, Standby, and Backup modes down to 1.5 uA typical, enabling battery-friendly operation.
Typical applications include automotive body electronics (HVAC panels, seat controllers, lighting, CAN nodes), industrial sensor hubs (4-20 mA loops, Modbus bridges), capacitive touch keypads and sliders for appliances, low-cost HMI with segment LCD or TFT up to small WVGA, and CAN-FD industrial automation nodes. The integrated PTC eliminates the need for an external touch controller, reducing BOM cost in white-goods and IoT devices.
When designing with this MCU, allocate at least one SERCOM for each required protocol, since each SERCOM is software-configurable but only runs one interface at a time. For CAN-FD, add a CAN transceiver such as the MCP2562FD on the CANH/CANL lines. Place decoupling capacitors (100 nF plus 4.7 uF bulk) within 2 mm of the VDDCORE and VDDIO pins, and route the exposed pad to a continuous ground plane for thermal dissipation.
直接替換替代品，適用於 ATSAMC20J16A-MUT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAMC20J16A-MUT （相同外形與佔位） — 差異在於 Package, ADC, I/O Pins, Operating Temperature, Program Memory (Flash).
ATSAMC20G16A-MNT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMC20G18A-ANT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMC20G15A-MUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMC20J16A-AUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMC20E16A-MNT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATSAMC20E15A-MUT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATSAMC20J16A-MUT 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Max CPU Clock | 48 MHz |
| Flash Memory | 64 KB (64K x 8) |
| SRAM | 8 KB |
| Operating Voltage | 2.7 V to 5.5 V |
| 工作溫度 | -40C to +85C (Industrial) |
| I/O Pins | 52 |
| 封裝 | 64-pin QFN (9x9 mm) with EP |
| Communication | 6x SERCOM (UART/SPI/I2C), 1x CAN-FD, USB 2.0 FS |
| ADC | 12-bit, up to 12 channels, 1 MSPS |
| DAC | 10-bit, 1 channel |
| Touch Controller | PTC (up to 256 buttons via QTouch) |
| Timers | TC (16-bit), TCC (24-bit), RTC |
| Security | AES-128, TRNG |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant |
| Packaging | Tape & Reel |
ATSAMC20J16A-MUT 腳位配置
| 腳位 1 | VDDIO — I/O supply voltage (2.7V-5.5V) |
| 腳位 2 | PA00 — GPIO / SERCOM0 PAD0 |
| 腳位 3 | PA01 — GPIO / SERCOM0 PAD1 |
| 腳位 4 | PA02 — GPIO / AIN0 (ADC input) |
| 腳位 5 | PA03 — GPIO / AIN1 / VREFA |
| 腳位 6 | GND — Ground |
| 腳位 7 | PA04 — GPIO / AIN2 |
| 腳位 8 | PA05 — GPIO / AIN3 |
| 腳位 9 | PA06 — GPIO / AIN4 |
| 腳位 10 | PA07 — GPIO / AIN5 |
| 腳位 11 | PA08 — GPIO / SERCOM2 PAD0 / I2S |
| 腳位 12 | PA09 — GPIO / SERCOM2 PAD1 / I2S |
| 腳位 13 | PA10 — GPIO / SERCOM2 PAD2 |
| 腳位 14 | PA11 — GPIO / SERCOM2 PAD3 |
| 腳位 15 | PA12 — GPIO / SERCOM4 PAD0 |
| 腳位 16 | PA13 — GPIO / SERCOM4 PAD1 |
| 腳位 17 | PA14 — GPIO / SERCOM4 PAD2 / XIN32 |
| 腳位 18 | PA15 — GPIO / SERCOM4 PAD3 / XOUT32 |
| 腳位 19 | PA16 — GPIO / SERCOM3 PAD0 / I2S |
| 腳位 20 | PA17 — GPIO / SERCOM3 PAD1 / I2S |
| 腳位 21 | PA18 — GPIO / SERCOM3 PAD2 |
| 腳位 22 | PA19 — GPIO / SERCOM3 PAD3 |
| 腳位 23 | PA20 — GPIO / SERCOM5 PAD2 |
| 腳位 24 | PA21 — GPIO / SERCOM5 PAD3 |
| 腳位 25 | PA22 — GPIO / SERCOM3 PAD0 |
| 腳位 26 | PA23 — GPIO / SERCOM3 PAD1 / USB ID |
| 腳位 27 | PA24 — GPIO / USB D- |
| 腳位 28 | PA25 — GPIO / USB D+ |
| 腳位 29 | PA26 — GPIO |
| 腳位 30 | PA27 — GPIO |
| 腳位 31 | PA28 — GPIO |
| 腳位 32 | PA29 — GPIO / CAN-TX |
| 腳位 33 | PA30 — GPIO / CAN-RX |
| 腳位 34 | PA31 — GPIO |
| 腳位 35 | PB00 — GPIO / SERCOM5 PAD0 |
| 腳位 36 | PB01 — GPIO / SERCOM5 PAD1 |
| 腳位 37 | PB02 — GPIO / SERCOM5 PAD2 / AIN10 |
| 腳位 38 | PB03 — GPIO / SERCOM5 PAD3 / AIN11 |
| 腳位 39 | PB04 — GPIO / SERCOM4 PAD0 |
| 腳位 40 | PB05 — GPIO / SERCOM4 PAD1 |
| 腳位 41 | PB06 — GPIO / SERCOM4 PAD2 |
| 腳位 42 | PB07 — GPIO / SERCOM4 PAD3 |
| 腳位 43 | PB08 — GPIO / SERCOM4 PAD0 / TC4 |
| 腳位 44 | PB09 — GPIO / SERCOM4 PAD1 / TC5 |
| 腳位 45 | PB10 — GPIO / SERCOM4 PAD2 / TC6 |
| 腳位 46 | PB11 — GPIO / SERCOM4 PAD3 / TC7 |
| 腳位 47 | PB12 — GPIO / SERCOM4 PAD0 / TCC0 |
| 腳位 48 | PB13 — GPIO / SERCOM4 PAD1 / TCC0 |
| 腳位 49 | PB14 — GPIO / SERCOM4 PAD2 / TCC0 |
| 腳位 50 | PB15 — GPIO / SERCOM4 PAD3 / TCC0 |
| 腳位 51 | PB16 — GPIO / SERCOM5 PAD0 / TCC1 |
| 腳位 52 | PB17 — GPIO / SERCOM5 PAD1 / TCC1 |
| 腳位 53 | PB18 — GPIO / SERCOM3 PAD2 / TCC1 |
| 腳位 54 | PB19 — GPIO / SERCOM3 PAD3 / TCC1 |
| 腳位 55 | PB20 — GPIO / SERCOM3 PAD0 |
| 腳位 56 | PB21 — GPIO / SERCOM3 PAD1 |
| 腳位 57 | VBAT — RTC battery supply |
| 腳位 58 | VDDCORE — Core voltage (1.62V internal LDO) |
| 腳位 59 | GND — Ground |
| 腳位 60 | VDDIO — I/O supply |
| 腳位 61 | VDDANA — Analog supply |
| 腳位 62 | GNDANA — Analog ground |
| 腳位 63 | XIN — Crystal oscillator input |
| 腳位 64 | XOUT — Crystal oscillator output |
典型應用
ATSAMC20J16A-MUT 適用於 6 應用s: Automotive Body Electronics (HVAC, Lighting, Seat Control), Capacitive Touch Keypads and Sliders, Industrial Sensor Hubs and 4-20 mA Loops, Low-Cost HMI with TFT or Segment LCD, IoT Edge Nodes with USB and CAN, Battery-Operated Sensor Aggregators.
Automotive Body Electronics (HVAC, Lighting, Seat Control)
The ATSAMC20J16A-MUT fits automotive body modules thanks to its 5V-tolerant I/O, integrated CAN-FD controller, and PTC for capacitive touch panels. At 48 MHz it runs LIN, CAN-FD, and sensor conditioning tasks concurrently, while the 64 KB Flash accommodates HVAC control loops, lighting sequences, and seat-position memory. The 12-bit ADC with 1 MSPS samples multiple position and temperature sensors per cycle. Power consumption under 3.5 mA active makes it suitable for body modules that remain on even when ignition is off. For AEC-Q100 compliance, designers must select the -AUT automotive suffix variant instead.
推薦
Capacitive Touch Keypads and Sliders
The on-chip Peripheral Touch Controller (PTC) enables the ATSAMC20J16A-MUT to scan up to 256 capacitive buttons or a 4x4 matrix slider without external analog front ends. Each touch event requires only a single SERCOM line for I2C communication with a host, freeing pins for backlight PWM via the TCC peripheral. The 5V tolerance simplifies integration with 5V-driven LED ring indicators and piezo buzzers. With 8 KB SRAM, the device stores touch-baseline calibration and gesture state without external memory. QTouch library support cuts firmware development time to weeks instead of months.
推薦
Industrial Sensor Hubs and 4-20 mA Loops
The ATSAMC20J16A-MUT consolidates multiple analog and digital sensor inputs in industrial hubs via its 12-bit ADC and 6 SERCOM channels. It reads 4-20 mA current-loop sensors through a low-side shunt, runs Modbus RTU over RS-485, and forwards data to a PLC or cloud gateway. Industrial -40C to +85C rating permits deployment in unheated cabinets, while 5V tolerance accepts 24V-bus-derived rails after regulation. With 64 KB Flash, the device stores both sensor-conditioning firmware and a Modbus mapping table on-chip. The CAN-FD controller also supports CANopen DS301 profiles for factory automation.
推薦
Low-Cost HMI with TFT or Segment LCD
The 48 MHz Cortex-M0+ core drives small TFT displays up to 320x240 (QVGA) using the integrated SERCOM peripherals as SPI interfaces, while the TCC timer generates PWM backlight control. Segment LCD support via the on-chip SLCD controller is available on related SAM C20 variants but requires firmware changes here. 64 KB Flash holds fonts, icons, and a simple LVGL-style UI library, while 8 KB SRAM provides framebuffer space for partial-screen updates. The 5V-tolerant GPIO directly drives LCD bias voltages, reducing external level shifters.
推薦
IoT Edge Nodes with USB and CAN
The ATSAMC20J16A-MUT serves as a USB-CAN gateway or a USB-sensor bridge in IoT edge nodes. Its USB 2.0 Full-Speed device interface enumerates as a CDC-ACM virtual COM port or a vendor-specific class, while the CAN-FD controller connects to a CAN bus carrying sensor data. AES-128 hardware acceleration secures over-the-air firmware updates, and TRNG provides entropy for TLS handshake nonces. With 64 KB Flash and 8 KB SRAM, the device can host a lightweight MQTT-SN or CoAP stack alongside CAN parsing. Low standby current below 1.5 uA enables battery-powered deployments.
推薦
Battery-Operated Sensor Aggregators
In battery-powered sensor aggregators, the ATSAMC20J16A-MUT spends most of its time in Standby mode with the RTC running at 1.5 uA typical, waking on RTC match, SERCOM match, or ADC threshold interrupt. Active current of 50 uA/MHz at 48 MHz means a short 5 ms wake-and-transmit window only consumes 12 uA average per minute, allowing CR2032 cells to last years. The integrated ADC and PTC eliminate external analog ICs, reducing quiescent draw to a single supply. The 5V tolerance permits direct connection to multi-cell battery packs without LDO overhead.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAMC20J16A-MUT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAMC20G16A-MNT | ATSAMC20G18A-ANT | ATSAMC20G15A-MUT | ATSAMC20J16A-AUT | ATSAMC20E16A-MNT | ATSAMC20E15A-MUT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin QFN (9x9) | 64-pin QFN (9x9) | 64-pin QFN (9x9) | 64-pin QFN (9x9) | 64-pin TQFP (10x10) | 32-pin QFN | 32-pin QFN |
| Flash Memory | 64 KB | 48 KB | 256 KB | 32 KB | 64 KB | 64 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Max CPU Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| GPIO Count | 52 | 52 | 52 | 52 | 52 | 26 | 26 |
| Operating 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 | 2.7V to 5.5V |
| CAN-FD | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
主要差異化特點
- 5V-tolerant I/O with integrated CAN-FD (對比ATSAMD20J16A-MUT)
- Integrated PTC eliminates external touch controller (對比External AT42QT1010 chain)
- Same-family scalability without PCB rework (對比Cross-brand STM32G031 or XMC1100)
- AES-128 and TRNG hardware security (對比Software AES on Cortex-M0)
設計說明
The ATSAMC20J16A-MUT has separate VDDCORE, VDDIO, and VDDANA pins. According to the SAM C20 datasheet, VDDIO and VDDANA must be tied to the same 2.7-5.5V supply, while VDDCORE is supplied by the internal 1.62V LDO. Place a 100 nF ceramic decoupling capacitor within 2 mm of each VDD pin and a 4.7 uF bulk capacitor near VDDCORE. If the application draws more than 50 mA, add a ferrite bead between VDDIO and VDDANA to isolate analog noise from switching digital current. For battery-powered designs, disable the Brown-Out Detector (BOD33) in Standby mode to minimize quiescent current.
The 64-pin QFN has an exposed thermal pad (EP) on pin 65 (not counted in the 64 numbered pins) that must be soldered to the ground plane for thermal and electrical performance. Estimated: at 48 MHz with all peripherals active at 3.3V, typical power dissipation is 17 mW, so the thermal pad carries about 2 C/W to a 4-layer FR4 board. For industrial -40C to +85C operation, this provides 50 C of margin. If the design enters high-temperature enclosures, route multiple thermal vias under the EP to spread heat into inner copper layers.
Route the XIN/XOUT crystal traces as a short, symmetric differential pair within 5 mm of the device. Use a guard ground trace around the crystal and keep digital signals at least 3 mm away to avoid coupling. According to Microchip application note AN00027, the load capacitors for the crystal must be sized per the crystal manufacturer's CL specification divided by 2, with stray PCB capacitance accounted for. For USB designs, route D+/D- as a 90-ohm differential pair with no stubs, and place the USB connector within 25 mm of the MCU pins.
Do not enable CAN-FD without first configuring the CAN transceiver's STBY pin; otherwise the bus remains recessive and no acknowledgement is generated. Common pitfall: forgetting to write the GCLK configuration before peripheral initialization, which causes SERCOM baud-rate errors. The SERCOM pads must be multiplexed via the PORT group before peripheral clock enables. Per the SAM C20 errata (DS80000810), revision A parts have a USB suspend current anomaly fixed by setting the VREG.SUPPLY bit in the SUPC controller. Always check the errata document during board bring-up.
For capacitive touch using the PTC, route the touch electrodes with a solid ground hatch plane below them, but leave the electrode area clear of copper for 5 mm. Per Microchip AN0067, ground fill near touch electrodes increases parasitic capacitance and reduces sensitivity. Keep the touch electrode traces short (less than 50 mm) and identical length where possible. Use 0.1 mm trace width on 0.5 mm pitch to maintain signal integrity. Twisted pair or shielded cables are not recommended; the PTC expects direct PCB electrodes.
合規資訊
RoHS and REACH compliant per Microchip product page. The standard -MUT suffix is industrial grade and not AEC-Q100 qualified; for AEC-Q100 automotive applications, choose the -AUT auto-grade suffix variant.
