ATSAMD20G14A-AUT - 48MHz Cortex-M0+ MCU 16KB Flash TQFP-48 | Microchip
MPN: ATSAMD20G14A-AUT ✓ Hoạt độngATSAMD20G14A-AUT Tóm tắt
What is an ARM Cortex-M0+ microcontroller? It is a 32-bit RISC processor core designed by ARM as the most energy-efficient member of the Cortex-M family, intended for deeply embedded applications. Microcontrollers integrating Cortex-M0+ cores (Cortex-M0+ MCU -> ARM microcontroller -> 32-bit MCU -> embedded controller) bridge sensor/actuator signals to firmware-driven decision logic in IoT endpoints, motor nodes, and portable instruments.
Key features of the ATSAMD20G14A-AUT include 16 KB Flash, 2 KB SRAM, an integrated Serial Communication Interface (SERCOM) block configurable as UART/SPI/I2C, a 12-bit ADC, a 10-bit DAC, multiple timers, and the full Microchip SAM D20 peripheral set. The device operates from 1.62 V to 3.63 V, supports industrial temperature grade (-40C to +85C), and includes the SleepWalking peripheral event system that lets peripherals wake the CPU autonomously to minimize average power consumption.
Architecturally, the ATSAMD20G14A-AUT combines a single-cycle Cortex-M0+ core with a 6-channel DMA controller, an event system for inter-peripheral signaling, and Microchip's Atmel Studio/MPLAB X toolchain compatibility. Code execution is deterministic, interrupt latency is short, and the integrated voltage regulator supports single-supply Li-ion or 3.3 V designs without external regulation.
Typical applications include smart-home sensor hubs, low-power wireless nodes (when paired with an external transceiver), industrial metering, HVAC controllers, consumer white goods, and human-machine interface (HMI) touch panels. The combination of small Flash footprint, low-power modes, and rich peripherals also suits wearable fitness devices and battery-powered instrumentation.
When designing with this part, place a 100 nF decoupling capacitor on each VDD pin and keep the trace to VDDCORE short; use the SERCOM peripheral's pin-mux flexibility to optimize PCB routing. Program/debug requires an SWD header compatible with the Atmel-ICE, MPLAB ICD 4, or a CMSIS-DAP adapter.
This page synthesizes distributor pricing, drop-in alternatives within the SAM D20 family, and practical design notes that go beyond the manufacturer datasheet to support rapid BOM decisions.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD20G14A-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 ATSAMD20G14A-AUT (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, ADC, SRAM, Series.
ATSAMD20G14A-AU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD20G15A-AUT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD20G16A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20G18A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD21G18A-AUT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD20G14A-AUT Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M0+ |
| Bit Width | 32-bit |
| Tần số xung maksimum | 48 MHz |
| Flash Memory Size | 16 KB (16K x 8) |
| SRAM Size | 2 KB |
| Điện áp cung cấp hoạt động | 1.62 V to 3.63 V |
| Hộp | 48-TQFP (7x7 mm) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | ROHS3 Compliant |
| Lead Time | Approximately 7 weeks (per distributor data) |
| Packaging | Tape & Reel (TR) |
| Product Status | Active |
| Series | SAM D20G |
Cấu hình chân ATSAMD20G14A-AUT
| Chân 1 | PA00 — General-purpose I/O / SERCOM1[0] / ADC AIN0 / peripheral function |
| Chân 2 | PA01 — General-purpose I/O / SERCOM1[1] / ADC AIN1 |
| Chân 3 | PA02 — General-purpose I/O / SERCOM1[2] / ADC AIN2 / DAC VOUT |
| Chân 4 | PA03 — General-purpose I/O / SERCOM1[3] / ADC AIN3 / reference voltage |
| Chân 5 | VDDIN — Voltage regulator input supply |
| Chân 6 | GND — Ground |
| Chân 7 | VDD — Digital supply output / analog supply |
| Chân 8 | VDDCORE — Decoupling pin for internal core regulator |
| Chân 9 | PA04 — General-purpose I/O / SERCOM0[0] / ADC AIN4 |
| Chân 10 | PA05 — General-purpose I/O / SERCOM0[1] / ADC AIN5 |
| Chân 11 | PA06 — General-purpose I/O / SERCOM0[2] / ADC AIN6 |
| Chân 12 | PA07 — General-purpose I/O / SERCOM0[3] / ADC AIN7 |
| Chân 13 | PA08 — General-purpose I/O / SERCOM2[0] / ADC AIN8 |
| Chân 14 | PA09 — General-purpose I/O / SERCOM2[1] / ADC AIN9 |
| Chân 15 | PA10 — General-purpose I/O / SERCOM2[2] / ADC AIN10 |
| Chân 16 | PA11 — General-purpose I/O / SERCOM2[3] / ADC AIN11 |
| Chân 17 | PA12 — General-purpose I/O / SERCOM4[0] (I2C) / peripheral function |
| Chân 18 | PA13 — General-purpose I/O / SERCOM4[1] / peripheral function |
| Chân 19 | PA14 — General-purpose I/O / SERCOM4[2] / peripheral function |
| Chân 20 | PA15 — General-purpose I/O / SERCOM4[3] / peripheral function |
| Chân 21 | PA16 — General-purpose I/O / SERCOM3[0] / I2S MCLK |
| Chân 22 | PA17 — General-purpose I/O / SERCOM3[1] / I2S SCK |
| Chân 23 | PA18 — General-purpose I/O / SERCOM3[2] / I2S FS |
| Chân 24 | PA19 — General-purpose I/O / SERCOM3[3] / I2S SDO |
| Chân 25 | PA20 — General-purpose I/O / SERCOM5[2] / peripheral function |
| Chân 26 | PA21 — General-purpose I/O / SERCOM5[3] / peripheral function |
| Chân 27 | PA22 — General-purpose I/O / SERCOM3[0] / peripheral function |
| Chân 28 | PA23 — General-purpose I/O / SERCOM3[1] / peripheral function |
| Chân 29 | PA24 — General-purpose I/O / SERCOM3[2] / peripheral function |
| Chân 30 | PA25 — General-purpose I/O / SERCOM3[3] / peripheral function |
| Chân 31 | PA26 — General-purpose I/O / peripheral function |
| Chân 32 | PA27 — General-purpose I/O / peripheral function |
| Chân 33 | PA28 — General-purpose I/O / peripheral function |
| Chân 34 | PA29 — General-purpose I/O / peripheral function |
| Chân 35 | PA30 — General-purpose I/O / SWCLK (debug) / peripheral function |
| Chân 36 | PA31 — General-purpose I/O / SWDIO (debug) / peripheral function |
| Chân 37 | PB00 — General-purpose I/O / peripheral function |
| Chân 38 | PB01 — General-purpose I/O / peripheral function |
| Chân 39 | PB02 — General-purpose I/O / SERCOM5[0] / ADC AIN14 |
| Chân 40 | PB03 — General-purpose I/O / SERCOM5[1] / ADC AIN15 |
| Chân 41 | PB04 — General-purpose I/O / SERCOM5[2] / peripheral function |
| Chân 42 | PB05 — General-purpose I/O / SERCOM5[3] / peripheral function |
| Chân 43 | PB06 — General-purpose I/O / SERCOM4[0] / peripheral function |
| Chân 44 | PB07 — General-purpose I/O / SERCOM4[1] / peripheral function |
| Chân 45 | PB08 — General-purpose I/O / SERCOM4[2] / peripheral function |
| Chân 46 | PB09 — General-purpose I/O / SERCOM4[3] / peripheral function |
| Chân 47 | GND — Ground |
| Chân 48 | VDD — Digital supply |
Ứng dụng tiêu biểu
ATSAMD20G14A-AUT phù hợp cho 6 Áp dụngs: Smart Home Sensor Hub, Industrial Metering, Consumer White Goods Control Board, Battery-Powered Wearable Fitness Device, HVAC Climate Controller, Human-Machine Interface Touch Panel.
Smart Home Sensor Hub
The ATSAMD20G14A-AUT is well suited to smart-home sensor hubs where 16 KB Flash is enough for Zigbee/BLE commissioning stacks and 2 KB SRAM covers short sensor buffers. Its Cortex-M0+ core wakes from SleepWalking in microseconds to service a PIR, temperature, or ambient-light event before returning to sub-uA standby, extending coin-cell life across multi-year deployments. The 1.62-3.63 V supply range accepts the voltage droop of a discharging CR2032 without regulator overhead.
Được đề xuất
Industrial Metering
For electricity, gas, or water metering endpoints, the ATSAMD20G14A-AUT combines a deterministic 48 MHz Cortex-M0+ with the 12-bit ADC and SleepWalking event system needed for periodic energy sampling. The industrial -40C to +85C operating range and 48-TQFP package withstand harsh meter enclosures, while the 16 KB Flash comfortably fits metering firmware with secure boot hooks. The integrated DMA offloads ADC buffering from the CPU, holding interrupt latency low during peak sampling windows.
Được đề xuất
Consumer White Goods Control Board
Washing machines, dishwashers, and refrigerators use the ATSAMD20G14A-AUT for front-panel UI handling and small motor control loops. The 10-bit DAC and PWM timers drive indicator LEDs and buzzer tones, while SERCOM blocks multiplex UART, SPI, and I2C for the main board sensor bus. Industrial temperature tolerance tolerates the elevated ambient inside the appliance cabinet, and the 48-TQFP package allows easy single-sided PCB assembly with through-hole headers for the UI ribbon cable.
Được đề xuất
Battery-Powered Wearable Fitness Device
Wearable bands and fitness sensors benefit from the ATSAMD20G14A-AUT's low-power SleepWalking peripherals, 1.62 V minimum supply, and event-driven DMA. The 48 MHz Cortex-M0+ executes step-counting algorithms and BLE radio coordination in short bursts before returning to standby, where the device draws single-digit microamps. The small 48-TQFP footprint fits inside wristbands with a 30 mm radius, and the 2 KB SRAM buffers accelerometer data between radio transmissions.
Được đề xuất
HVAC Climate Controller
The ATSAMD20G14A-AUT anchors the HVAC control board by managing temperature setpoint inputs, fan PWM outputs, and the LCD user interface. Its 48 MHz throughput handles UI rendering, PID loop execution, and Modbus or BACnet networking simultaneously. The 16 KB Flash stores the control firmware plus NVM-backed parameter tables, while the 2 KB SRAM supports BACnet MS/TP frame assembly without overrun. Industrial temperature tolerance guarantees operation in unconditioned equipment closets.
Được đề xuất
Human-Machine Interface Touch Panel
The ATSAMD20G14A-AUT drives capacitive touch panels and small TFT displays in elevator controls, kitchen appliances, and industrial HMIs. Its 12-bit ADC samples a matrix touch panel with adequate resolution, and SERCOM peripherals drive SPI displays up to 20 MHz without DMA pressure. The 48-TQFP package leaves generous board space for the touch sensor pattern, and 16 KB Flash holds the UI asset table plus multi-language strings required by global appliance platforms.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD20G14A-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 | ATSAMD20G14A-AU | ATSAMD20G15A-AUT | ATSAMD20G16A-AUT | ATSAMD20G18A-AUT | ATSAMD21G18A-AUT |
|---|---|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 16 KB | 16 KB (same) | 24 KB (+50%) | 64 KB (+300%) | 256 KB (+1500%) | 256 KB (+1500%) |
| SRAM | 2 KB | 2 KB (same) | 4 KB (+100%) | 8 KB (+300%) | 32 KB (+1500%) | 32 KB (+1500%) |
| USB 2.0 FS | No | No | No | No | No | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Smallest Flash/SRAM within the SAM D20G family reduces BOM cost (vsATSAMD20G18A-AUT)
- Pin-compatible upgrade to higher memory within the same package (vsATSAMD20G15A-AUT)
- Lower-power alternative to USB-enabled SAM D21G family (vsATSAMD21G18A-AUT)
Ghi chú thiết kế
Place a 100 nF X7R decoupling capacitor on each VDD/VDDIN pin and a single 1 uF bulk capacitor on VDDCORE. The internal voltage regulator requires the VDDCORE pin to be tied only to the capacitor; do not load it with external circuits. Estimated: at 48 MHz active and 3.3 V VDD, the device draws roughly 7 mA per the SAM D20G datasheet typical active current figures.
Route the SWD signals (SWCLK on PA30, SWDIO on PA31) as short parallel traces with a ground return path; do not share them with high-frequency SERCOM lines to avoid debug probe noise. Keep the trace length from the SWD header to the MCU under 50 mm and place a 4.7 kohm pull-up on SWDIO as recommended by ARM CoreSight documentation.
Do not configure SERCOM pads without first enabling the PMUX function in the PORT multiplexer and selecting the correct peripheral channel; otherwise I/O will read as inputs. Also, when entering STANDBY or BACKUP sleep modes, ensure wake sources are configured before executing the WFI instruction, since the SERCOM wake flag is cleared automatically.
The 48-TQFP package uses 0.5 mm pitch and is easier to hand-solder than QFN variants. Place the MCU near the board center to balance trace lengths to the SWD header and the analog sensor connectors. Keep the analog AIN pins (PA02-PA11, PB02-PB03) short and isolated from switching power traces to preserve ADC accuracy.
Thông tin tuân thủ
RoHS3 compliant per distributor data (Microchip USA, DigiKey, Mouser as of 2026-09-21). Industrial temperature grade -40C to +85C. AEC-Q100 not applicable since this is a general-purpose MCU, not automotive-qualified.
