ATSAMD20G14A-MNT - ARM Cortex-M0+ MCU, 48MHz, 16KB Flash | Microchip
MPN: ATSAMD20G14A-MNT ✓ Hoạt độngATSAMD20G14A-MNT Tóm tắt
A microcontroller (MCU) is a single-chip computer that combines a CPU core, program and data memory, and a rich set of on-chip peripherals such as timers, ADC, communication interfaces, and general-purpose I/O. The ARM Cortex-M0+ belongs to the Cortex-M family of 32-bit RISC cores designed for embedded systems, while Microchip's SAM D20 product line extends this core with low-power SleepWalking peripherals, a SERCOM (Serial Communication Interface) block, and event system that make the device competitive against 8-bit and 16-bit MCUs while remaining easy to program. Within the broader taxonomy, this part sits at: MCU -> microcontroller -> ARM Cortex-M0+ microcontroller -> SAM D20 family -> low-power Cortex-M0+ MCU.
Key features of the ATSAMD20G14A-MNT include up to 38 GPIO pins, six SERCOM channels configurable as UART/SPI/I2C, a 12-bit 350 ksps ADC with up to 14 channels, 16-bit timers/counters, a 32 kHz RTC, full-speed USB 2.0 device support in related variants, and the standard SAM D20 peripheral mix. The 'MNT' suffix indicates the industrial temperature grade (-40C to +105C), VQFN-48 (7x7) package, and Tape & Reel packaging, with Pb-free / RoHS-compliant lead finish.
Typical applications include home automation, consumer electronics, smart metering, industrial sensor nodes, human-machine interface (HMI) controllers, and IoT edge devices. Compared with 8-bit PIC or AVR alternatives at similar cost points, the SAM D20G delivers roughly an order-of-magnitude more compute, modern peripherals, and an ARM ecosystem (CMSIS, ASF, Harmony, GCC/IAR/Keil toolchains). At the same time it preserves strong low-power behaviour - down to a few microamperes in deep-sleep modes with RAM retention - making it a credible drop-in upgrade when firmware complexity outgrows 8-bit MCUs.
When designing with the ATSAMD20G14A-MNT, ensure the 48-pin VQFN exposed pad is soldered to a continuous ground plane for both thermal and electrical performance, place the two 100 nF + 1 uF VDD decoupling pairs within 2 mm of each VDD pin, and follow Microchip's SAM D20 reference design notes for the 32.768 kHz crystal layout if RTC accuracy is required.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD20G14A-MNT — 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 ATSAMD20G14A-MNT (cùng hình factor và footprint) — khác nhau ở Package, ADC, DAC, SRAM, MSL Level.
ATSAMD20G14A-MN
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD20G14A-AN
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD20E18A-MNT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD20E16B-MN
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD11D14A-MNT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD10D14A-MNT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD20G14A-MNT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Family | Atmel | SMART SAM D20G |
| Maximum CPU Frequency | 48 MHz |
| CoreMark / MHz | 2.14 |
| Program Flash Memory | 16 KB (16K x 8) |
| SRAM | 2 KB |
| Supply Voltage (VDD) | 1.62 V to 3.63 V |
| Nhiệt độ hoạt động | -40 C to +105 C (industrial grade) |
| GPIO Count | Up to 38 |
| SERCOM Channels | 6 (configurable as UART / SPI / I2C) |
| ADC | 12-bit, up to 350 ksps |
| Timer / Counter | 16-bit, multiple channels |
| Hộp | 48-pin VQFN (7x7 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Pb-free / RoHS-compliant (Green) |
Cấu hình chân ATSAMD20G14A-MNT
| Chân 1 | PA00 — GPIO / XIN32 (32.768 kHz crystal input) |
| Chân 2 | PA01 — GPIO / XOUT32 (32.768 kHz crystal output) |
| Chân 3 | PA02 — GPIO / AIN0 (ADC input) |
| Chân 4 | PA03 — GPIO / AIN1 (ADC input) |
| Chân 5 | GND — Ground |
| Chân 6 | VDD — Digital supply voltage |
| Chân 7 | PA04 — GPIO / AIN2 / VREFA |
| Chân 8 | PA05 — GPIO / AIN3 |
| Chân 9 | PA06 — GPIO / AIN4 |
| Chân 10 | PA07 — GPIO / AIN5 |
| Chân 11 | PA08 — GPIO / NMI |
| Chân 12 | PA09 — GPIO / SERCOM alt |
| Chân 13 | PA10 — GPIO / SERCOM alt |
| Chân 14 | PA11 — GPIO / SERCOM alt |
| Chân 15 | VDDCORE — Internal core voltage (decoupling) |
| Chân 16 | GND — Ground |
| Chân 17 | PA12 — GPIO / SERCOM alt |
| Chân 18 | PA13 — GPIO / SERCOM alt |
| Chân 19 | PA14 — GPIO / SERCOM alt |
| Chân 20 | PA15 — GPIO / SERCOM alt |
| Chân 21 | PA16 — GPIO / SERCOM alt |
| Chân 22 | PA17 — GPIO / SERCOM alt |
| Chân 23 | PA18 — GPIO / SERCOM alt |
| Chân 24 | PA19 — GPIO / SERCOM alt |
| Chân 25 | PA20 — GPIO / SERCOM alt |
| Chân 26 | PA21 — GPIO / SERCOM alt |
| Chân 27 | PA22 — GPIO / SERCOM alt |
| Chân 28 | PA23 — GPIO / SERCOM alt |
| Chân 29 | PA24 — GPIO / USB_DM (if USB present on related variant) |
| Chân 30 | PA25 — GPIO / USB_DP (if USB present on related variant) |
| Chân 31 | GND — Ground |
| Chân 32 | VDD — Digital supply voltage |
| Chân 33 | PA26 — GPIO |
| Chân 34 | PA27 — GPIO |
| Chân 35 | PA28 — GPIO / Reset pin alt |
| Chân 36 | PA29 — GPIO |
| Chân 37 | PA30 — GPIO / SWCLK (debug) |
| Chân 38 | PA31 — GPIO / SWDIO (debug) |
| Chân 39 | PB00 — GPIO |
| Chân 40 | PB01 — GPIO |
| Chân 41 | PB02 — GPIO / SERCOM alt |
| Chân 42 | PB03 — GPIO / SERCOM alt |
| Chân 43 | PB04 — GPIO / SERCOM alt |
| Chân 44 | PB05 — GPIO / SERCOM alt |
| Chân 45 | PB06 — GPIO / SERCOM alt |
| Chân 46 | PB07 — GPIO / SERCOM alt |
| Chân 47 | PB08 — GPIO / SERCOM alt |
| Chân 48 | PB09 — GPIO / SERCOM alt |
Ứng dụng tiêu biểu
ATSAMD20G14A-MNT phù hợp cho 6 Áp dụngs: Home Automation / Smart Home Nodes, Smart Metering Endpoints, Industrial Sensor Hubs, Consumer Electronics Human-Machine Interface (HMI), Wearable Fitness Bands, Battery-Powered IoT Edge Nodes.
Home Automation / Smart Home Nodes
The ATSAMD20G14A-MNT fits home-automation sensor and actuator nodes because its 32-bit Cortex-M0+ at 48 MHz executes Zigbee, BLE-Mesh (via external radio), or Matter protocol stacks in firmware, while the 6 SERCOM channels give UART/SPI/I2C flexibility for sensors, keypads, and triac drivers. Deep-sleep currents in the microampere range with RAM retention enable multi-year battery life on coin cells for door/window sensors, and the 12-bit ADC reads thermistor or LDR signals directly. Place the part between the 3V coin cell and the load switches; use the event system to wake the CPU only on GPIO change.
Được đề xuất
Smart Metering Endpoints
The ATSAMD20G14A-MNT is well matched to smart electricity, water, and gas metering endpoints where the 12-bit 350 ksps ADC samples load current/voltage, the 16-bit timer captures pulse counting, and SERCOM interfaces to a wireless M-Bus or LoRaWAN modem. Its 1.62V-3.63V supply range lets it run directly from a 3.6V lithium primary cell, and the industrial -40C to +105C grade supports outdoor meter enclosures. Use the on-chip RTC with external 32.768 kHz crystal for time-stamping tariff events; the Cortex-M0+ delivers enough compute for IEC 62056-21 DLMS/COSEM encoding in firmware.
Được đề xuất
Industrial Sensor Hubs
Industrial 4-20 mA loop-powered sensor hubs benefit from the ATSAMD20G14A-MNT's wide 1.62V-3.63V supply tolerance, six SERCOM channels for Modbus RTU or RS-485 multi-drop, and the event system that lets ADC, SERCOM, and timers wake the CPU only when needed. The industrial temperature grade (-40C to +105C) handles factory-floor thermal stress, and the 38 GPIOs accommodate button, LED, and HMI LCD interfaces. Position between the 24V loop-derived 3.3V rail and the RS-485 transceiver; the MCU's small 7x7 mm QFN footprint leaves room for isolation barriers and TVS protection.
Được đề xuất
Consumer Electronics Human-Machine Interface (HMI)
The ATSAMD20G14A-MNT powers low-cost consumer HMI panels (small appliances, e-bike displays, smart thermostats) because it drives character or small graphic OLEDs over SPI, reads capacitive touch via the PTC peripheral, and animates UI smoothly at 48 MHz on a Cortex-M0+ core. With 16 KB flash and 2 KB SRAM, it fits structured menu systems, simple icon bitmaps, and wireless pairing stacks over BLE. Use it as the main MCU between the 3.3V LDO and the OLED/touch daughter board; the 6 SERCOM ports handle SPI display, I2C touch, and UART debug simultaneously.
Được đề xuất
Wearable Fitness Bands
Wearables such as fitness bands and BLE heart-rate straps can leverage the ATSAMD20G14A-MNT for sensor aggregation (accelerometer, optical heart rate, skin temperature) at low power, with the SERCOM SPI interfacing the sensor stack and I2C connecting to a BLE SoC like the ATBTLC1000. Deep-sleep with full RAM retention keeps idle current in the microampere range, and the small 7x7 mm VQFN footprint is suitable for compact wristband PCBs. Drive LEDs and a vibration motor via PWM channels, and use the event system to wake on accelerometer interrupts without CPU intervention.
Được đề xuất
Battery-Powered IoT Edge Nodes
Battery-powered IoT edge nodes benefit from the ATSAMD20G14A-MNT's combination of SleepWalking peripherals (ADC and SERCOM can monitor inputs while CPU sleeps), 1.62V-3.63V single-supply operation, and Cortex-M0+ compute headroom for over-the-air (OTA) update handlers. The device consumes only a few microamperes in deep-sleep with RAM retention, allowing multi-year operation on 2x AA cells when duty-cycled. Position the MCU as the central processor between the battery, sensor I2C/SPI bus, and a sub-GHz or BLE radio companion.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD20G14A-MNT — 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 | ATSAMD20G14A-MN | ATSAMD20G14A-AN | ATSAMD20E18A-MNT | ATSAMD20E16B-MN | ATSAMD11D14A-MNT | ATSAMD10D14A-MNT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-VQFN (7x7) | 48-VQFN (7x7) - same | 48-VQFN (7x7) - same | 48-VQFN (7x7) - same | 48-VQFN (7x7) - same | 48-VQFN (7x7) - same | 48-VQFN (7x7) - same |
| Flash | 16 KB | 16 KB | 16 KB | 32 KB (+100%) | 16 KB | 16 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 4 KB (+100%) | 2 KB | 4 KB (+100%) | 4 KB (+100%) |
| Core | ARM 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 |
| SERCOM Channels | 6 | 6 | 6 | 6 | 6 | 5 (-17%) | 5 (-17%) |
| Supply Voltage | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V |
| Operating Temperature | -40C to +105C (industrial) | -40C to +105C | -40C to +125C (extended) | -40C to +105C | -40C to +105C | -40C to +85C | -40C to +85C |
| USB Device Support | Not in this pin count (D20 48-pin) | No | No | No | No | Yes (native USB 2.0 FS device) | No |
Bảo phân biệt quan trọng
- Lowest-cost SAM D20 entry point with industrial temperature grade (vsATSAMD20G14A-MN)
- Double the flash and SRAM without changing footprint (vsATSAMD20E18A-MNT)
- Family upgrade path with USB and more SRAM (vsATSAMD11D14A-MNT)
Ghi chú thiết kế
Solder the 48-VQFN exposed pad to a continuous ground plane using an array of thermal vias (typically 0.3 mm drill, 0.6 mm pitch, 9-16 vias) for both electrical reference and thermal dissipation. According to the SAM D20 hardware design considerations, missing or insufficient ground stitching on the EP will degrade ADC accuracy and increase die junction temperature. Place at least one 100 nF + 1 uF ceramic decoupling pair within 2 mm of each VDD/VDDCORE pin pair.
The ATSAMD20G14A-MNT's flash is only 16 KB - firmware using Microchip's Harmony 3 framework easily exceeds this budget. Before committing to this part, compile a representative firmware set (USB CDC + FreeRTOS + drivers) and check linker MAP output. If you approach the 14 KB wall, migrate to ATSAMD20E18A-MNT (32 KB) which is pin-compatible. Also note: the PA28 pin is shared with RESET in some configurations - verify you have not assigned it as GPIO if you need hardware reset.
If you wire the SWD debug interface (PA30/PA31) directly to a Cortex-M debug header, add 100 kohm pull-up on SWDIO and 100 kohm pull-down on SWCLK per the SAM D20 datasheet, and a 10 nF series capacitor on SWDIO for hot-plug protection. Keep SWD traces under 50 mm and away from switching power lines. Use Segger J-Link or Atmel-ICE for production programming; both are officially supported for the ATSAMD20G14A per SEGGER's supported devices list.
Thông tin tuân thủ
Pb-free / Green finish per Microchip ordering code suffix 'NT'. Not AEC-Q100 qualified - not intended for automotive safety-critical use. Halogen-free status: not explicitly stated in scraped product data.
