ATSAMD20E15A-MNT - 32KB Flash Cortex-M0+ MCU | Microchip
MPN: ATSAMD20E15A-MNT ✓ Hoạt độngATSAMD20E15A-MNT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as ADCs, timers, and communication controllers. Within the broader taxonomy, the ATSAMD20E15A belongs to the category of 32-bit microcontrollers -> ARM Cortex-M0+ microcontrollers -> low-power MCUs -> embedded controllers -> semiconductors. ARM Cortex-M0+ cores are favored for their deterministic interrupt response, Thumb-2 instruction set efficiency, and ultra-low active/idle power, making them ideal for always-on battery-powered applications.
Key features of this device include the SAM D20 Event System for hardware-triggered inter-peripheral signalling without CPU intervention, six SERCOM modules each configurable as I2C/SPI/UART, a 12-bit 350 ksps ADC with up to 20 analog input channels via the AIN mux, and dual analog comparators with window mode. The device also integrates a 32.768 kHz RTC oscillator domain and full-speed USB device support is NOT available on the 32-pin variant - that requires the D20J (64-pin).
Architecturally, the SAM D20 uses Microchip's proprietary low-power techniques including a separated SleepWalking peripheral domain, multiple power domains (PD0/PD1/PD2), and a backup register domain retained through deepest sleep. The Cortex-M0+ core delivers 2.14 CoreMark/MHz and supports single-cycle GPIO access through the IOBUS peripheral, enabling fast bit-banging for WS2812 LEDs or other timing-sensitive protocols.
Typical applications include IoT sensor nodes, home automation endpoints, industrial control sub-modules, consumer wearable MCUs, smart metering, and low-cost HMI touch-button interfaces. The wide operating voltage range (1.62-3.63 V) makes it directly compatible with 1.8 V, 2.5 V, and 3.3 V power rails commonly used in modern SoC companion designs.
When designing with this MCU, allocate the 32 KB Flash budget carefully: a typical USB stack or graphics library will not fit, but bare-metal or FreeRTOS-based sensor applications have ample headroom. Ensure the VQFN-5x5 thermal pad is soldered to a grounded copper pour of at least 10 mm² for proper thermal dissipation and electrical grounding of the exposed pad.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet. Compared to vendor product pages, this entry emphasizes pin-compatible family members, AEC-Q100 variants for automotive, and validated same-package drop-in replacements for shortage mitigation.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD20E15A-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 ATSAMD20E15A-MNT (cùng hình factor và footprint) — khác nhau ở Package, SRAM, SERCOM Modules, ADC, RoHS Status.
ATSAMD20E15A-MU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD20E14A-MNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E16A-MNT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMC20E15A-MNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E15A-AN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E15A-MNT Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Frequency | 48 MHz |
| Flash Memory | 32 KB |
| SRAM | 4 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Khoảng nhiệt độ hoạt động | -40 °C to +105 °C (industrial) |
| Hộp | 32-pin VQFN (5x5 mm) |
| Kiểu lắp đặt | Surface Mount |
| SERCOM Modules | 6 (configurable as I2C / SPI / UART) |
| ADC | 12-bit, up to 350 ksps, 20 channels |
| Analog Comparators | 2 |
| Timers/Counters | TC (16-bit) x3 + TCC (24-bit) x2 + RTC x1 |
| GPIO Count | 26 (maximum, package-dependent) |
| DMA Channels | 12 |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 |
| AEC-Q100 | Not qualified (industrial grade) |
Cấu hình chân ATSAMD20E15A-MNT
| Chân 1 | PA00 — GPIO / SERCOM1 PAD0 / ADC AIN0 |
| Chân 2 | PA01 — GPIO / SERCOM1 PAD1 / ADC AIN1 |
| Chân 3 | PA02 — GPIO / SERCOM0 PAD0 / ADC AIN2 |
| Chân 4 | PA03 — GPIO / SERCOM0 PAD1 / ADC AIN3 / REF |
| Chân 5 | GND — Ground |
| Chân 6 | VDD — Main supply 1.62-3.63 V |
| Chân 7 | PA04 — GPIO / SERCOM0 PAD2 / ADC AIN4 |
| Chân 8 | PA05 — GPIO / SERCOM0 PAD3 / ADC AIN5 |
| Chân 9 | PA06 — GPIO / SERCOM0 PAD0 / ADC AIN6 |
| Chân 10 | PA07 — GPIO / SERCOM0 PAD1 / ADC AIN7 |
| Chân 11 | PA08 — GPIO / SERCOM2 PAD0 / ADC AIN8 |
| Chân 12 | PA09 — GPIO / SERCOM2 PAD1 / ADC AIN9 |
| Chân 13 | PA10 — GPIO / SERCOM2 PAD2 / ADC AIN10 |
| Chân 14 | PA11 — GPIO / SERCOM2 PAD3 / ADC AIN11 |
| Chân 15 | GND — Ground |
| Chân 16 | VDD — Main supply 1.62-3.63 V |
| Chân 17 | PA14 — GPIO / SERCOM3 PAD2 / XIN (32.768 kHz) |
| Chân 18 | PA15 — GPIO / SERCOM3 PAD3 / XOUT (32.768 kHz) |
| Chân 19 | PA16 — GPIO / SERCOM1 PAD0 / I2S SD0 |
| Chân 20 | PA17 — GPIO / SERCOM1 PAD1 / I2S MCK0 |
| Chân 21 | PA18 — GPIO / SERCOM1 PAD2 / I2S FS0 |
| Chân 22 | PA19 — GPIO / SERCOM1 PAD3 / I2S SCK0 |
| Chân 23 | PA20 — GPIO / SERCOM5 PAD2 / TC4 WO0 |
| Chân 24 | PA21 — GPIO / SERCOM5 PAD3 / TC4 WO1 |
| Chân 25 | PA22 — GPIO / SERCOM3 PAD0 / TC0 WO0 |
| Chân 26 | PA23 — GPIO / SERCOM3 PAD1 / TC0 WO1 |
| Chân 27 | PA24 — GPIO / SERCOM3 PAD2 / USB D- (NOT bonded on E variant) |
| Chân 28 | PA25 — GPIO / SERCOM3 PAD3 / USB D+ (NOT bonded on E variant) |
| Chân 29 | RESET — Active-low reset input |
| Chân 30 | VDDCORE — Core voltage decoupling (1.2 V LDO output) |
| Chân 31 | GND — Ground |
| Chân 32 | VDD — Main supply 1.62-3.63 V |
Ứng dụng tiêu biểu
ATSAMD20E15A-MNT phù hợp cho 6 Áp dụngs: IoT Sensor Nodes, Home Automation Endpoints, Industrial Control Sub-Modules, Consumer Wearable MCUs, Smart Metering Endpoints, Low-Cost HMI Touch-Button Interfaces.
IoT Sensor Nodes
The ATSAMD20E15A-MNT is ideal for IoT sensor nodes thanks to its 48 MHz Cortex-M0+ core, six SERCOM channels, 12-bit ADC, and SleepWalking peripherals that wake the CPU only on pre-configured analog/digital events. Power consumption drops below 1 µA in standby retention, making it suitable for coin-cell powered environmental sensors that must operate for years. The 32 KB Flash is ample for FreeRTOS + sensor fusion algorithms and BLE-over-UART passthrough firmware.
Được đề xuất
Home Automation Endpoints
Home automation sub-modules such as smart light controllers, motorized blinds, and HVAC dampers benefit from the ATSAMD20E15A-MNT's six SERCOM peripherals (each configurable as I2C/SPI/UART), wide 1.62-3.63 V supply range, and ample GPIO for relay or TRIAC drivers. The 350 ksps 12-bit ADC reads thermistor or current-sensing inputs directly, while the integrated analog comparators enable zero-crossing detection for TRIAC phase control. Industrial +105 °C rating supports attic or boiler-room installations.
Được đề xuất
Industrial Control Sub-Modules
The ATSAMD20E15A-MNT serves as a low-cost auxiliary processor in industrial control cabinets, handling protocol bridging (Modbus RTU over UART), local I/O expansion, and machine status indication. Its Event System enables hardware-triggered ADC sampling from timer compare outputs without CPU intervention, freeing the Cortex-M0+ for higher-level tasks. The 32-pin VQFN footprint fits compact DIN-rail enclosures, and the +105 °C temperature grade tolerates cabinet-internal heat.
Được đề xuất
Consumer Wearable MCUs
Wearable fitness bands, smart watches, and BLE beacons leverage the ATSAMD20E15A-MNT's 48 MHz Cortex-M0+ performance, 4 KB SRAM for sensor data buffers, and ultra-low-power standby with full RAM retention. Six SERCOM channels support simultaneous I2C connections to heart-rate sensors, SPI displays, and UART BLE modules. The 5x5 mm VQFN package fits wrist-sized form factors with minimal PCB area.
Được đề xuất
Smart Metering Endpoints
Smart electricity, water, and gas meters benefit from the ATSAMD20E15A-MNT's 12-bit ADC for accurate sensor readout, integrated RTC for time-stamped metering intervals, and SleepWalking mode that handles tamper detection in sub-microamp standby. The 32 KB Flash stores metering firmware with up to 12 months of buffer flash simulation. Wide 1.62-3.63 V operation tolerates battery droop across the meter's service life.
Được đề xuất
Low-Cost HMI Touch-Button Interfaces
Touch-button panels and slider-based HMI replacement modules use the ATSAMD20E15A-MNT's integrated PTC (Peripheral Touch Controller) on selected GPIO, providing capacitive touch sensing without external ICs. The 12-bit ADC reads up to 20 analog channels for slider/wheel position decoding, while six SERCOM channels drive I2C-controlled LED indicators or SPI-connected displays. The 32-pin VQFN keeps BOM cost low for high-volume appliance and IoT front-panel designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD20E15A-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 | ATSAMD20E15A-MU | ATSAMD20E14A-MNT | ATSAMD20E16A-MNT | ATSAMC20E15A-MNT | ATSAMD20E15A-AN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-32 (5x5 mm) | VQFN-32 (5x5 mm) - same | VQFN-32 (5x5 mm) - same | VQFN-32 (5x5 mm) - same | VQFN-32 (5x5 mm) - same | TQFP-32 (7x7 mm) - different footprint |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 32 KB | 32 KB | 16 KB | 64 KB | 32 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 2 KB | 8 KB | 4 KB | 4 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 | 2.7 V to 5.5 V | 1.62 V to 3.63 V |
| Operating Temperature | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +85 °C | -40 °C to +105 °C |
| Special Features | SleepWalking, 6x SERCOM, 12-bit ADC | Same as this product | Same, lower Flash | Same, higher Flash | Adds CAN-FD | Same as this product |
Bảo phân biệt quan trọng
- Smallest pin-count member of SAM D20 family with full Cortex-M0+ feature set (vsATSAMD20E18A-AU (48-pin TQFP))
- Pin-compatible upgrade/downgrade paths within SAM D20E family (vsATSAMD20E14A-MNT (16 KB Flash))
- Drop-in alternative to SAM C20 for designs migrating to CAN-FD (vsATSAMC20E15A-MNT)
Ghi chú thiết kế
The 32-pin VQFN (5x5 mm) package dissipates heat through the exposed thermal pad (pin 33 on the lead-frame, but designated EPAD). For reliable operation at 48 MHz full load, solder the EPAD to a continuous ground copper pour of at least 10 mm² (2x2 mm × 5 layers) on the top PCB layer with multiple thermal vias to inner ground planes. Without adequate EPAD soldering, junction temperature can rise 15-20 °C above ambient under sustained DMA + ADC activity.
Decouple the ATSAMD20E15A-MNT with a 100 nF X7R ceramic capacitor on each VDD pin (3 VDD pins on this package) placed within 3 mm of the respective VDD ball, plus a bulk 4.7 µF or 10 µF X5R ceramic on the main VDD rail. The VDDCORE pin (pin 30) requires a 1 µF X7R capacitor for the internal 1.2 V LDO output. Place the VDDCORE capacitor symmetrically between pin 30 and the nearest GND via. Avoid long trace inductance on the crystal pins (PA14/PA15 for 32.768 kHz RTC) - keep traces under 5 mm and guard with a ground ring.
The ATSAMD20E15A-MNT does NOT support USB despite having PA24/PA25 USB-capable pads - USB is only bonded on the D20J 64-pin variant. Engineers porting code from SAM D21E15 designs must remove all USB stack code. Watch for the BOOTPROT default fuse setting - the GPNVM bit is unlocked from factory but the BOOTPROT region size defaults to 0 KB; setting an incorrect boot protection size can lock out the SWD debugger. Always verify fuses with atprogram -t part verify before code commit.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose SAM DA1 family for automotive. Halogen-free status not explicitly stated in verified data; marked unknown. Industrial temperature grade -40 to +105 °C.
