ATSAMD20E14B-MUT - 48MHz ARM Cortex-M0+ MCU, 16KB Flash | Microchip
MPN: ATSAMD20E14B-MUT ✓ Hoạt độngATSAMD20E14B-MUT Tóm tắt
An ARM Cortex-M0+ microcontroller is a 32-bit RISC processor core designed for ultra-low-power embedded applications. It sits within the broader hierarchy: Cortex-M0+ -> ARM Cortex-M -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. The M0+ core delivers Thumb-2 instruction efficiency with a deterministic 2-stage pipeline, making it ideal for cost-sensitive, energy-aware designs.
Key features of the ATSAMD20E14B-MUT include 16KB Flash for application code, 2KB SRAM for data, up to 26 GPIO pins, 6 SERCOM channels for flexible UART/SPI/I2C configuration, a 12-bit 350 ksps ADC with up to 16 channels, and integrated SleepWalking peripherals with Event System for sub-microamp sleep current. The device also supports a crystal-less USB bootloader via the DSU (Device Service Unit) and integrates a true 32.768 kHz RTC.
The ATSAMD20E14B-MUT uses an advanced low-power architecture with multiple sleep modes (IDLE, STANDBY, BACKUP), consuming as little as 3.5 uA in BACKUP mode with RTC running. Its peripheral Event System allows direct inter-peripheral signaling without CPU wake, drastically reducing average power in sensor-driven applications.
Typical applications include smart home automation (Zigbee/BLE endpoints), low-power IoT sensor nodes, consumer electronics (HID, toys), industrial metering, and battery-powered portable devices. The combination of small package size, deep-sleep current, and rich peripherals makes it a strong fit for energy-harvesting designs.
Designers should pay attention to decoupling (one 100nF per VDD pin), exposed-pad grounding (mandatory for thermal dissipation on VQFN), and use Atmel Studio 7 or MPLAB X IDE with the DSU to enable field upgrades via USB without an external programmer.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes that are not gathered in a single place inside the manufacturer datasheet, helping engineers select and source the part quickly.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD20E14B-MUT — 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 ATSAMD20E14B-MUT (cùng hình factor và footprint) — khác nhau ở ADC, Package, Flash Memory, SERCOM Modules, Peripheral Touch Controller (PTC).
ATSAMD20E14A-AN
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD20E14B-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E14B-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E18A-MUT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD20E15A-MUT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD20E14B-MUT Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Clock | 48 MHz |
| Flash Memory | 16 KB |
| SRAM | 2 KB |
| Supply Voltage Range | 1.62 V to 3.6 V |
| GPIO Pins | 26 |
| SERCOM Channels | 6 (UART/SPI/I2C configurable) |
| ADC | 12-bit, up to 16 channels, 350 ksps |
| Hộp | 32-pin VQFN (5x5 mm) with Exposed Pad |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| Packaging Type | Tape & Reel (TR) |
Cấu hình chân ATSAMD20E14B-MUT
| Chân 1 | PA02 — GPIO/SERCOM, ADC AIN0 |
| Chân 2 | PA03 — GPIO/SERCOM, ADC AIN1, reference voltage |
| Chân 3 | PA04 — GPIO/SERCOM, ADC AIN2 |
| Chân 4 | PA05 — GPIO/SERCOM, ADC AIN3 |
| Chân 5 | PA06 — GPIO/SERCOM, ADC AIN4 |
| Chân 6 | PA07 — GPIO/SERCOM, ADC AIN5 |
| Chân 7 | VDDIO — Digital I/O supply |
| Chân 8 | GND — Ground |
| Chân 9 | PA08 — GPIO/SERCOM, NMI |
| Chân 10 | PA09 — GPIO/SERCOM |
| Chân 11 | PA10 — GPIO/SERCOM |
| Chân 12 | PA11 — GPIO/SERCOM |
| Chân 13 | PA14 — GPIO/SERCOM |
| Chân 14 | PA15 — GPIO/SERCOM |
| Chân 15 | PA16 — GPIO/SERCOM, I2S |
| Chân 16 | PA17 — GPIO/SERCOM, I2S |
| Chân 17 | PA18 — GPIO/SERCOM |
| Chân 18 | PA19 — GPIO/SERCOM |
| Chân 19 | PA20 — GPIO/SERCOM |
| Chân 20 | PA21 — GPIO/SERCOM |
| Chân 21 | PA22 — GPIO/SERCOM |
| Chân 22 | PA23 — GPIO/SERCOM, USB D- |
| Chân 23 | PA24 — GPIO/SERCOM, USB D+ |
| Chân 24 | PA25 — GPIO/SERCOM |
| Chân 25 | PA27 — GPIO, BOOT (DSU) |
| Chân 26 | RESET — Reset input, active low |
| Chân 27 | SWDIO — ARM SWD data |
| Chân 28 | SWCLK — ARM SWD clock |
| Chân 29 | VDDIO — Digital I/O supply |
| Chân 30 | VDDCORE — Internal 1.2 V LDO output (decoupling) |
| Chân 31 | GND — Ground |
| Chân 32 | EP — Exposed pad, must be soldered to ground |
Ứng dụng tiêu biểu
ATSAMD20E14B-MUT phù hợp cho 6 Áp dụngs: Low-Power IoT Sensor Node, Smart Home Automation, Consumer Electronics Remote Control, Industrial Metering and Sensor Hubs, Wearable Health and Fitness Devices, Battery Charging and Power Management.
Low-Power IoT Sensor Node
The ATSAMD20E14B-MUT's ARM Cortex-M0+ core at 48 MHz with 3.5 uA BACKUP current (RTC running) per the SAM D20 datasheet suits battery-powered IoT sensor nodes. It supports periodic temperature/humidity sampling with Event System wake, integrates 12-bit ADC, 6 SERCOM for sensor buses (I2C/SPI), and SleepWalking peripherals that wake the CPU only on threshold-crossing events, enabling coin-cell operation for years.
Được đề xuất
Smart Home Automation
Smart home devices such as BLE/Zigbee endpoints, smart switches, and HVAC controllers benefit from the ATSAMD20E14B-MUT's low-power modes, multiple SERCOM channels, and ARM Cortex ecosystem. The 16 KB Flash fits typical ZCL/ZHA application code, the 2 KB SRAM is sufficient for buffer management, and the 1.62 V minimum supply enables direct Li-ion battery operation for wireless doorbells and battery-powered sensors.
Được đề xuất
Consumer Electronics Remote Control
The ATSAMD20E14B-MUT is ideal for BLE/IR remote controls and consumer HID devices because of its tiny 5x5 mm VQFN footprint, sub-microamp sleep current, and integrated 32 kHz RTC for accurate wake scheduling. The 26 GPIO can drive LED indicators, capacitive touch buttons, and IR LEDs, while the 12-bit ADC reads battery voltage for end-of-life indicators at the press of a button for years.
Được đề xuất
Industrial Metering and Sensor Hubs
Industrial gas/water meters using the ATSAMD20E14B-MUT benefit from the industrial -40 C to +85 C temperature range, 1.62 V to 3.6 V supply (single-cell Li/SOCl2 chemistries), and tamper-detection GPIO. SERCOM channels connect to metrology front-ends (SPI to ADE7953 or I2C to external RTC), while the low-power SleepWalking ADC enables sub-10 uA average current for 10-year battery life compliance.
Được đề xuất
Wearable Health and Fitness Devices
Wearable fitness bands and health-monitoring patches find the ATSAMD20E14B-MUT attractive because of its 5x5 mm QFN-32 package allowing PCB miniaturization, 3.5 uA BACKUP sleep, and 6 SERCOM channels for accelerometer/PPG/skin-temperature sensor fabrics. The Cortex-M0+ executes heart-rate algorithms efficiently within 2 KB SRAM, while the 12-bit ADC captures analog bioelectric signals directly.
Được đề xuất
Battery Charging and Power Management
Battery management ICs integrate well with the ATSAMD20E14B-MUT's 12-bit ADC and timer/counter peripherals for Li-ion charging profile control, fuel-gauging, and protection circuits. The 1.62 V minimum supply suits direct single-cell operation, while the 12-bit ADC monitors cell voltage and current with up to 350 ksps throughput, enabling Coulomb counting and OVP/UVP protection algorithms.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD20E14B-MUT — 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-AN | ATSAMD20E14B-AUT | ATSAMD20E14B-AU | ATSAMD20E18A-MUT | ATSAMD20E15A-MUT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-32 (5x5 mm) | VQFN-32 (5x5 mm) - same | TQFP-32 (7x7 mm) | TQFP-32 (7x7 mm) | VQFN-32 (5x5 mm) - same | VQFN-32 (5x5 mm) - same |
| CPU Clock (max) | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB | 4 KB |
| Supply Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| SERCOM Channels | 6 | 6 | 6 | 6 | 6 | 6 |
Bảo phân biệt quan trọng
- Lowest power consumption in SAM D20E family at 3.5 uA BACKUP current with RTC running (vsATSAMD20E18A-MUT)
- Identical 5x5 mm VQFN footprint with pin-compatible memory variants (vsATSAMD20E15A-MUT)
- Same SAM D20E die available in TQFP-32 for prototype-friendliness (vsATSAMD20E14B-AUT)
Ghi chú thiết kế
Decoupling is critical on the ATSAMD20E14B-MUT. Place a 100 nF X7R ceramic within 2 mm of each VDDIO and VDDCORE pin, with a shared 4.7 uF bulk capacitor. For battery applications targeting sub-10 uA average current, switch to BACKUP mode using the SUPC controller and gate all peripherals with the Event System. Estimated: at 3.3 V VBAT, the device draws 3.5 uA in BACKUP with RTC running per SAM D20 datasheet.
The 32-pin VQFN exposed pad (EP) at pin 32 MUST be soldered to a grounded copper pour with at least 6 thermal vias (0.3 mm drill, 0.5 mm pitch) to the inner layers. Without proper EP soldering, the internal 1.2 V LDO will overheat at sustained 48 MHz operation. Estimate: an ungrounded EP can cause junction temperatures 25-40 C higher than a properly grounded EP under same load.
Route SWDIO and SWCLK traces as a matched pair within 100 mm, keeping them away from switching power or motor driver edges. Place a 4.7 kohm pull-up on SWDIO if multiple debuggers share the bus. Per Atmel/Microchip debug recommendations, including a 10-pin 0.05" Cortex Debug header from the start avoids expensive board respins and supports Atmel ICE, MPLAB Snap, and J-Link tools.
Do not exceed 3.6 V on any I/O pin; the absolute maximum per SAM D20 datasheet is 4.0 V but operation beyond 3.6 V risks latch-up. Avoid bridging RESET directly to VDD without a 10 kohm pull-up and a 1 nF capacitor to GND, as this prevents in-circuit programming. Estimated: missing RESET pull-up is the leading cause of failed field firmware upgrade attempts in deployed products.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications consider ATSAMC20E16A-AUT which carries AEC-Q100 Grade 2 qualification.
