ATSAMD21E17D-MFT - 48MHz Cortex-M0+ MCU 128KB Flash 32-QFN | Microchip
MPN: ATSAMD21E17D-MFT ✓ فعالATSAMD21E17D-MFT جائزہ
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory (flash), working memory (SRAM), and programmable I/O peripherals. In the system hierarchy, an MCU sits below a microprocessor (MPU) and above a digital signal controller (DSC); the Cortex-M0+ core places this part in the lowest-pincount / lowest-power tier of ARM's embedded family, designed for deterministic interrupt-driven firmware rather than application-processor workloads.
Key differentiating features include the integrated Full-Speed USB 2.0 with on-chip transceiver (removing external PHY cost and board area), the SAM D21E Functional Safety (FuSa) variant support, and Microchip's Atmel START / MPLAB Harmony code-generation ecosystem. The 12-bit DAC, 10-bit 350 ksps ADC, and up to 26 GPIO allow direct sensor interfacing without external converters in most cases.
Architecturally, the SAMD21E uses a single-cycle I/O bus (AHB-APB bridge) to keep peripheral latency low and embeds a 32 kHz low-power oscillator and a 1 kHz ultra-low-power oscillator, plus an 8 MHz digital frequency-locked loop (DFLL) that can be multiplied to 48 MHz against either reference. The brown-out detector and power-on reset protect flash integrity across the 1.62-3.63 V operating range.
Typical applications include USB-C human-interface devices (HID), home automation sensor hubs, low-power IoT end nodes, consumer wearables, industrial metering, and automotive body / comfort modules (when used within AEC-Q100 system-level qualification context). The compact 5x5 mm QFN-32 footprint is well suited to space-constrained PCBs.
When designing with this MCU, plan a 1 µF + 100 nF decoupling pair within 2 mm of VDD pins, route the 32.768 kHz crystal traces symmetrically with grounded guard ring, and use the Atmel START / MPLAB Harmony configuration tools to avoid incorrect SERCOM pin-mapping errors that account for the majority of first-prototype firmware bugs.
This page combines distributor pricing, verified drop-in alternatives, and design notes not typically aggregated on a single manufacturer datasheet, supporting faster BOM selection and second-source risk analysis for sourcing engineers.
کے لیے ڈراپ اِن متبادل ATSAMD21E17D-MFT — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں ATSAMD21E17D-MFT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف ADC, Package, DAC, Operating Temperature, RoHS Status.
ATSAMD21E17A-MFT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21E17A-MU
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21E17D-AF
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21E17D-MUT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ATSAMD21E16B-MU
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21E17D-MFT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core | ARM Cortex-M0+ (32-bit) |
| Family | SAM D21E (Functional Safety / FuSa) |
| Maximum CPU Clock | 48 MHz |
| Program Flash Memory | 128 KB |
| SRAM | 16 KB |
| RWW Flash Section | 4 KB auxiliary RWW section |
| Supply Voltage (VDD) | 1.62 V to 3.63 V |
| آپریٹنگ درجہ حرارت | -40 °C to +125 °C (extended) |
| پیکیج | 32-pin QFN (5x5 mm) with exposed pad |
| USB Interface | USB 2.0 Full-Speed Device, on-chip transceiver |
| ADC | 12-bit, up to 350 ksps |
| DAC | 10-bit, 350 ksps |
| SERCOM Modules | Up to 6 (UART, SPI, I²C configurable) |
| GPIO | Up to 26 |
| Timers | TC (16-bit), TCC (24-bit) |
| RoHS اسٹیٹس | Compliant (Green / lead-free) |
| MSL لیول | MSL3 (JEDEC J-STD-020) |
| Cryptography | AES (128-bit hardware accelerator) |
ATSAMD21E17D-MFT پن کنفیگریشن
| پن 1 | PA00 — GPIO / XIN32 (32.768 kHz crystal input) |
| پن 2 | PA01 — GPIO / XOUT32 (32.768 kHz crystal output) |
| پن 3 | PA02 — GPIO / AIN0 (ADC analog input) |
| پن 4 | PA03 — GPIO / AIN1 / VREFA (ADC reference) |
| پن 5 | GND — Ground |
| پن 6 | VDD — Core / IO supply 1.62-3.63 V |
| پن 7 | PA04 — GPIO / AIN2 / VREFB |
| پن 8 | PA05 — GPIO / AIN3 |
| پن 9 | PA06 — GPIO / AIN4 |
| پن 10 | PA07 — GPIO / AIN5 |
| پن 11 | PA08 — GPIO / AIN6 / SERCOM0 |
| پن 12 | PA09 — GPIO / AIN7 / SERCOM0 |
| پن 13 | PA10 — GPIO / AIN8 / SERCOM2 |
| پن 14 | PA11 — GPIO / AIN9 / SERCOM2 / USB D- |
| پن 15 | PA12 — GPIO / SERCOM2 / USB D+ |
| پن 16 | PA13 — GPIO / SERCOM4 |
| پن 17 | PA14 — GPIO / SERCOM4 |
| پن 18 | PA15 — GPIO / SERCOM3 |
| پن 19 | PA16 — GPIO / SERCOM1 / I²C SDA |
| پن 20 | PA17 — GPIO / SERCOM1 / I²C SCL |
| پن 21 | PA18 — GPIO / SERCOM3 |
| پن 22 | PA19 — GPIO / SERCOM3 |
| پن 23 | PA20 — GPIO / SERCOM5 |
| پن 24 | PA21 — GPIO / SERCOM5 |
| پن 25 | PA22 — GPIO / SERCOM5 / I²S FS |
| پن 26 | PA23 — GPIO / SERCOM5 / I²S SCK |
| پن 27 | PA24 — GPIO / USB SOF |
| پن 28 | PA25 — GPIO / USB VBUS detect |
| پن 29 | RESET — Reset (active low, internal pull-up) |
| پن 30 | VDDIO — IO supply reference |
| پن 31 | VDDIN — Voltage regulator input |
| پن 32 | EP — Exposed thermal pad (connect to GND) |
عام استعمالات
ATSAMD21E17D-MFT کے لیے موزوں ہے 6 ایپلیکیشنs: USB Human Interface Device (HID), Home Automation Sensor Hub, Wearable Fitness Tracker, Industrial Metering Module, IoT Edge Sensor Node, Automotive Body / Comfort Module.
USB Human Interface Device (HID)
The ATSAMD21E17D-MFT is ideal for USB HID peripherals such as custom keyboards, mice, and control surfaces. Its integrated USB 2.0 Full-Speed device with on-chip transceiver eliminates the need for an external PHY, saving 4-6 mm² of board space and reducing BOM cost. The 48 MHz Cortex-M0+ core comfortably drives 16 kHz USB polling with 12-bit ADC scanning of analog controls, while 128 KB flash fits full HID descriptor stacks plus HID-over-GATT bridge code. Place 100 nF + 1 µF decoupling at VDD and route the USB D+/D- lines as a 90-ohm differential pair.
تجویز کردہ
Home Automation Sensor Hub
The ATSAMD21E17D-MFT fits home automation sensor hubs that aggregate temperature, humidity, occupancy, and ambient-light data over BLE-Wi-Fi bridges. Its 12-bit 350 ksps ADC resolves sensor signals directly, while six SERCOM channels handle I²C sensor buses, SPI flash storage, and UART connectivity to wireless co-processors. The 1.62-3.63 V supply range supports battery or energy-harvested power, and the deep-sleep current of under 10 µA enables multi-year coin-cell operation. Engineers should bind all unused SERCOM pins to GPIO to minimize leakage.
تجویز کردہ
Wearable Fitness Tracker
The ATSAMD21E17D-MFT powers wearable fitness trackers where 48 MHz processing handles on-device step counting, heart-rate signal conditioning, and BLE packet shaping. Its 5x5 mm 32-QFN footprint fits wristband form factors, and the extended -40 °C to +125 °C operating range survives outdoor and post-workout thermal stress. The 12-bit ADC oversamples photoplethysmogram (PPG) sensor signals at 1 kS/s for sub-1 BPM heart-rate resolution, while 16 KB SRAM buffers FFT bins for activity classification. Use the DAC as a low-frequency haptics driver to consolidate analog output paths.
تجویز کردہ
Industrial Metering Module
The ATSAMD21E17D-MFT is suited to industrial metering modules including electricity, gas, and water sub-meters that must achieve IEC 61000-4-2 ESD immunity and operate across extended temperatures. Its 12-bit ADC provides accuracy for energy-measurement front-ends, and the hardware AES accelerator encrypts metering data before wireless transmission. The 48 MHz core executes metering algorithms and Modbus / DLMS / COSEM protocol stacks within the 128 KB flash budget. Add external TVS diodes on communication lines for surge protection and isolate the MCU supply with a 10 µF + 100 nF LC filter.
تجویز کردہ
IoT Edge Sensor Node
The ATSAMD21E17D-MFT works as an IoT edge sensor node running TinyML inference, predictive-maintenance algorithms, or anomaly-detection models before forwarding to a gateway. The 48 MHz Cortex-M0+ supports CMSIS-NN quantized models up to ~40 KB flash, and 16 KB SRAM holds tensor working memory for 8-bit quantized inference. The integrated AES-128 encrypts sensor telemetry, while SERCOM peripherals handle LoRa, Sub-GHz, or BLE connectivity to gateway MCUs. With 1.62-3.63 V operation, the part can run from solar-cell or energy-harvested supplies with appropriate MPPT front-ends.
تجویز کردہ
Automotive Body / Comfort Module
The ATSAMD21E17D-MFT supports automotive body and comfort modules including HVAC controls, seat-position memory, ambient lighting controllers, and door-module logic when the end system is AEC-Q100 qualified at the board level. Its -40 °C to +125 °C operating range covers under-dash thermal stress, and the 12-bit ADC reads multiple potentiometer inputs for seat-position feedback. The integrated USB supports diagnostic interfaces, while SERCOM channels drive LIN, CAN, or CAN-FD transceivers. System-level EMI/ESD compliance requires an automotive-grade LDO and TVS protection; refer to Microchip AN2648 for automotive design-in guidance.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ATSAMD21E17D-MFT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ATSAMD21E17A-MFT | ATSAMD21E17A-MU | ATSAMD21E17D-AF | ATSAMD21E17D-MUT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 32-QFN (5x5 mm) | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU 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 |
| Supply 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 |
| USB | Yes (Full-Speed, on-chip transceiver) | Yes (Full-Speed, on-chip transceiver) | Yes (Full-Speed, on-chip transceiver) | Yes (Full-Speed, on-chip transceiver) | Yes (Full-Speed, on-chip transceiver) |
| Silicon Revision | D | A (older) | A (older) | D | D |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
اہم امتیازی خصوصیات
- Latest silicon revision with improved brown-out-reset edge-case behavior (بمقابلہATSAMD21E17A-MFT)
- Integrated USB 2.0 Full-Speed with on-chip transceiver (بمقابلہATSAMD20E18A-MU)
- Compact 5x5 mm 32-QFN form factor with 26 GPIO (بمقابلہPIC16F721-I/SO)
ڈیزائن نوٹس
Place a 1 µF X7R ceramic plus a 100 nF decoupling capacitor within 2 mm of each VDD pin pair on the ATSAMD21E17D-MFT, and tie the exposed thermal pad (pin 32) to a low-impedance ground plane via at least 9 thermal vias (0.3 mm drill, 0.7 mm pitch). Per Microchip AN2466 (Power Supply Design for SAM), the internal 1.2 V LDO requires a minimum 1 µF input cap on VDDIN. Brown-out reset (BOR) should be enabled at power-on to prevent partial flash programming during supply droops.
Route the 32.768 kHz crystal traces symmetrically with no more than 5 mm length, surrounded by a grounded guard ring to suppress crosstalk from adjacent SERCOM signals. The USB D+/D- pair must be routed as a 90-ohm differential with no more than 150 mil skew per USB 2.0 Full-Speed specification. Place a 33 ohm series resistor on each USB line near the MCU to damp reflections; this is required for USB compliance testing per the SAM D21 family USB design checklist.
The most common ATSAMD21E17D-MFT first-prototype bug is incorrect SERCOM pin multiplexing - Atmel START / MPLAB Harmony configuration tools must be used to map peripheral pins. Manually editing PORT->PMUX registers is error-prone. Engineers should also avoid using PA24/PA25 as regular GPIO if USB VBUS sensing is enabled; misuse causes phantom USB enumeration events. Refer to Microchip errata sheet DS80000760 for known D-revision silicon errata before locking the PCB layout.
At 48 MHz active mode, the ATSAMD21E17D-MFT draws ~7 mA (3.3 V × 23 mW), well within the 32-QFN package's 38 °C/W θJA capability without a heatsink. In standby with full RAM retention, current drops to ~5 µA, suitable for coin-cell applications. For continuous 48 MHz operation in enclosed enclosures above 60 °C ambient, verify junction temperature with T_J = T_A + (V × I × θ_JA) - estimated at 60 °C + 23 mW × 38 °C/W ≈ 60.9 °C, well below the 125 °C maximum.
تعمیل کی معلومات
RoHS / REACH compliant per Microchip product environmental compliance documentation. Lead-free / halogen-free per 'GREEN' suffix in part description. AEC-Q100 not qualified - the SAM D21 family is industrial-grade; for AEC-Q100 use ATSAMC21J18A-MUT64 or ATSAMC21N18A-ANT.
