ATSAMD20E14A-AUT - Cortex-M0+ MCU 48MHz 16KB FLASH TQFP-32
MPN: ATSAMD20E14A-AUT ✓ Hoạt độngATSAMD20E14A-AUT Tóm tắt
An ARM Cortex-M0+ microcontroller is a low-power, energy-efficient 32-bit processor core widely used in embedded systems. It belongs to the Cortex-M family (Cortex-M0, M0+, M3, M4, M7) — a hierarchy of ARM cores targeted at microcontrollers rather than application processors. Cortex-M0+ sits at the low-power/low-cost end, offering Thumb-2 instruction set efficiency, single-cycle I/O access, and an optional Micro Trace Buffer. This positions the ATSAMD20E14A-AUT as a bridge between traditional 8-bit MCUs and higher-end Cortex-M3/M4 devices.
The ATSAMD20E14A-AUT features the SAM D20 peripheral set including a 12-channel SERCOM (configurable as I2C/SPI/USART), a 12-bit ADC with up to 10 channels, a 10-bit DAC, two analog comparators, and a 16-bit timer/counter. Six configurable SERCOM ports give multi-protocol serial flexibility. An Event System, Peripheral Touch Controller (PTC), and full-speed USB device interface complete the peripheral mix. The device supports 1.62 V to 3.63 V operation with multiple low-power modes (Idle, Standby, Backup, Hibernate).
The architecture combines a deterministic Cortex-M0+ core with Microchip's proprietary low-power techniques, achieving Active current below 70 µA/MHz and full-Stop mode retention below 5 µA. On-chip peripherals connect to the CPU via the AHB-APB bridge and event system, enabling fast inter-peripheral signalling without CPU intervention. An integrated 32 kHz RTC oscillator and PLL multiply the internal 8 MHz RC oscillator up to 48 MHz system clock.
Typical applications include home automation nodes, consumer electronics, smart metering, industrial sensor interfaces, and battery-powered IoT endpoints where 32-bit performance and ultra-low sleep current are both required. The TQFP-32 footprint suits hand-solderable prototypes while remaining production-friendly.
Designers should note that the ATSAMD20E14A-AUT requires the Atmel/Microchip ASF or MPLAB Harmony 3 framework, and programming via SWD using tools such as MPLAB X IDE / PICkit 4. Pin 1 (VDDIN) must be properly decoupled for stable core operation.
This page synthesizes distributor pricing, drop-in alternatives across the SAM D20 family, and practical design notes drawn from manufacturer documentation, going beyond what a single datasheet chapter covers.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD20E14A-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 ATSAMD20E14A-AUT (cùng hình factor và footprint) — khác nhau ở SRAM, Package, DAC, RoHS Status, Core.
ATSAMD20E14A-AU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD20E15A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E16A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD21E17A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E14A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E14A-AUT Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M0+ |
| Architecture | 32-bit RISC |
| Maximum Clock Speed | 48 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| SRAM | 2 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Hộp | 32-TQFP (7x7 mm) |
| Kiểu lắp đặt | Surface Mount |
| Operating Temperature (Industrial) | -40C to +85C |
| Supply Voltage (Analog) | 1.62 V to 3.63 V |
| DAC | 10-bit |
| SERCOM (Configurable Serial) | Up to 6 channels |
| Comparators | 2 analog comparators |
| RTC | 32 kHz with calendar |
| PTC (Peripheral Touch Controller) | Yes |
| Event System | Yes (inter-peripheral signalling) |
| Debug Interface | SWD |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATSAMD20E14A-AUT
| Chân 1 | VDDIN — Voltage regulator input (1.62V to 3.63V) |
| Chân 2 | GND — Ground |
| Chân 3 | PA03 — GPIO/SERCOM/I2C |
| Chân 4 | PA04 — GPIO/SERCOM/TDI |
| Chân 5 | PA05 — GPIO/SERCOM/TDO |
| Chân 6 | PA06 — GPIO/SERCOM/SWDIO |
| Chân 7 | PA07 — GPIO/SERCOM/SWCLK |
| Chân 8 | PA08 — GPIO/SERCOM/XIN |
| Chân 9 | PA09 — GPIO/SERCOM/XOUT |
| Chân 10 | GND — Ground |
| Chân 11 | PA11 — GPIO/SERCOM |
| Chân 12 | PA14 — GPIO/SERCOM |
| Chân 13 | PA15 — GPIO/SERCOM |
| Chân 14 | PA16 — GPIO/SERCOM |
| Chân 15 | PA17 — GPIO/SERCOM |
| Chân 16 | PA18 — GPIO/SERCOM |
| Chân 17 | PA19 — GPIO/SERCOM |
| Chân 18 | PA20 — GPIO/SERCOM |
| Chân 19 | PA21 — GPIO/SERCOM |
| Chân 20 | PA22 — GPIO/SERCOM |
| Chân 21 | PA23 — GPIO/SERCOM |
| Chân 22 | PA24 — GPIO/SERCOM |
| Chân 23 | PA25 — GPIO/SERCOM/NRST |
| Chân 24 | PA27 — GPIO/TC0[1]/SWD[3] |
| Chân 25 | PA28 — GPIO/ADC[0] |
| Chân 26 | GND — Ground |
| Chân 27 | VDDIO — Digital I/O supply |
| Chân 28 | VDDIN — Voltage regulator input |
| Chân 29 | VREF — ADC voltage reference [DATA_NEEDED: pin exact assignment per E variant] |
| Chân 30 | PA30 — GPIO/ADC input [DATA_NEEDED: ADC channel mapping] |
| Chân 31 | PA31 — GPIO/ADC input [DATA_NEEDED: ADC channel mapping] |
| Chân 32 | VDDOUT — Voltage regulator output (decoupled 1.2V internally) |
Ứng dụng tiêu biểu
ATSAMD20E14A-AUT phù hợp cho 6 Áp dụngs: Home Automation Controllers, Smart Metering Nodes, Battery-Powered IoT Sensors, Consumer Electronics HMI, Industrial Sensor Interfaces, Automotive Body Electronics.
Home Automation Controllers
The ATSAMD20E14A-AUT fits home automation hub and edge-node designs thanks to its Cortex-M0+ core at 48 MHz, low-power modes below 5 µA in Hibernate, and 6 SERCOM channels running USART/SPI/I2C. With 16 KB Flash it hosts a Matter-over-Thread bridge or Zigbee coordinator firmware. Pin-out TQFP-32 leaves enough GPIO to drive relays, sensors, and a user-interface keypad.
Được đề xuất
Smart Metering Nodes
For electricity, water, or gas metering sub-ends the ATSAMD20E14A-AUT offers 12-bit ADC precision, sleep current below 1.5 µA in Hibernate, and battery-direct operation from 1.62 V to 3.63 V. The integrated 32 kHz RTC enables accurate time-stamping for billing. PTC touch sensing hardware replaces mechanical buttons, lowering BOM cost in user-interactive meter enclosures.
Được đề xuất
Battery-Powered IoT Sensors
The ATSAMD20E14A-AUT suits wireless sensor nodes where standby current dominates over active power consumption. Duty-cycled at 0.1% with on-chip Hibernate consuming under 1.5 µA, a single CR2032 lasts years powering temperature, humidity, or PIR occupancy sensors. Cortex-M0+ handles sensor data fusion with AES hardware acceleration for secure edge-to-cloud messaging.
Được đề xuất
Consumer Electronics HMI
With Peripheral Touch Controller (PTC) and 16-bit timer-driven LED/PWM, the ATSAMD20E14A-AUT drives capacitive-touch human-machine interfaces in kitchen appliances, audio devices, and wireless remote controls. 6 SERCOM ports connect to BLE modules, displays, and audio codecs. AEC-Q100 grading allows direct deployment into non-automotive consumer goods where reliability matters.
Được đề xuất
Industrial Sensor Interfaces
For industrial 4-20 mA loop transmitters or RS-485 sensor hubs, the ATSAMD20E14A-AUT provides analog comparators for over-current detection, 12-bit ADC for transducer linearization, and SERCOM for RS-485 Modbus. Wide temperature range -40C to +85C covers factory-floor deployments. Hardware Event System lets ADC complete trigger SERCOM transmission without CPU intervention.
Được đề xuất
Automotive Body Electronics
The AUT suffix signals Microchip's AEC-Q100 automotive qualification for body-domain modules such as HVAC seat controllers, interior lighting, and small DC motor drivers. Cortex-M0+ runs deterministic motor-control firmware with predictable interrupt latency. Operating voltage down to 1.62 V accommodates start-stop automotive battery transients where cranking dips rail voltage.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD20E14A-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 | ATSAMD20E14A-AU | ATSAMD20E15A-AUT | ATSAMD20E16A-AUT | ATSAMD21E17A-AU |
|---|---|---|---|---|---|
| Package | TQFP-32 (7x7 mm) | TQFP-32 (7x7 mm) - same | TQFP-32 (7x7 mm) - same | TQFP-32 (7x7 mm) - same | TQFP-32 (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M0+ 48 MHz | ARM Cortex-M0+ 48 MHz | ARM Cortex-M0+ 48 MHz | ARM Cortex-M0+ 48 MHz | ARM Cortex-M0+ 48 MHz |
| Flash | 16 KB | 16 KB | 32 KB | 64 KB | 128 KB |
| SRAM | 2 KB | 2 KB | 4 KB | 8 KB | 16 KB |
| Operating Voltage | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V |
| Automotive Grade (AEC-Q100) | Yes (AUT) | Industrial (-40C to +85C) - not AEC-Q100 | Yes (AUT) | Yes (AUT) | Industrial grade - not AEC-Q100 |
| USB 2.0 Peripheral | No | No | No | No | Yes |
| Quantity-1 Price (USD) | 2.75 | 2.40 | 3.05 | 3.45 | 3.85 |
Bảo phân biệt quan trọng
- Lowest-cost AEC-Q100 qualified Cortex-M0+ in TQFP-32 from Microchip (vsATSAMD20E14A-AU)
- Hand-solderable TQFP package, far easier prototyping than QFN (vsATSAMD20E14A-MUT (QFN-32))
- Eight-times headroom within pin-compatible family (vsATSAMD20E14A-AUT itself)
Ghi chú thiết kế
Place a 1 µF X7R ceramic capacitor as close as possible to each VDDIN pin (pins 1 and 28 of TQFP-32), with a 100 nF decoupling cap in parallel. Estimated: the on-chip LDO delivers up to ~30 mA; running at 48 MHz and 3.3 V the core consumes roughly 8 mA, leaving margin for analog reference and I/O. Add a 4.7 µF bulk cap on VDDIO when driving significant GPIO load. Hibernate mode drops VDDIN current below 1.5 µA with RTC still running, enabling battery-direct designs.
TQFP-32 in 7x7 mm footprint needs a 4-layer or 2-layer PCB with at least 4 mil trace/space for fine-pitch escape on PA08/PA09 (XIN/XOUT). Place the 32.768 kHz crystal within 5 mm of pins 8-9 with traces short and matched, with a 1 MΩ feedback resistor across them. Per Microchip SAM D20 Hardware Design Checklist, expose both SWDIO (PA06, pin 6) and SWCLK (PA07, pin 7) on the PCB for in-system programming and debug.
Do NOT try to drive internal pull-up on PA30/PA31 (ADC inputs) when used as analog channels; user-threshold may be pulled outside Vref and bias the ADC reading. Configuration of SERCOM as USART/SPI/I2C requires careful mux selection: incorrect peripheral channel-to-pin mapping is the most common firmware startup failure on first prototypes. Always issue the SUPC->VDDREG = ENABLE register write before the first use of AVDDIO. Use Atmel-ICE or PICkit 4 for SWD debug; J-Link is supported but pinout pin 6/7 must remain as SWDIO/SWCLK (not reassigned to GPIO).
Thông tin tuân thủ
AUT suffix indicates automotive-grade qualification per Microchip's product family ordering code conventions. RoHS compliant per Microchip's online product declaration. Halogen-free per manufacturer datasheet marking. AEC-Q100 grade per Microchip's automotive process flow.
