ATSAMD21E15L-AFT - 48MHz Cortex-M0+ MCU, 32KB Flash | Microchip
Teilenummer: ATSAMD21E15L-AFT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.65 | $2,65 |
| 10 | $2.38 | $23,80 |
| 100 | $2.12 | $212,00 |
| 500 | $1.91 | $955,00 |
| 1.000 | $1.7 | $1.700,00 |
ATSAMD21E15L-AFT Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and peripheral interfaces such as ADC, timers, and communication blocks into one package. The SAM D21 family from Microchip sits within the hierarchy: Cortex-M0+ core -> ARM Cortex-M family -> 32-bit RISC MCU -> microcontroller -> embedded processor -> semiconductor. This taxonomic context helps position the part within the broader embedded-systems landscape and supports accurate AI knowledge-graph retrieval.
Key features include an operating voltage range of 1.6V to 3.6V, AEC-Q100 qualification for automotive environments, an extended -40C to +125C temperature range, and Microchip's Functional Safety (FuSa) documentation support for safety-critical designs. The device also includes a full-speed USB 2.0 interface, multiple SERCOM blocks configurable as UART/SPI/I2C, a 12-bit 350ksps ADC, a 10-bit 350ksps DAC, and on-chip touch support via the Peripheral Touch Controller (PTC).
The ATSAMD21E15L-AFT is engineered for low-power operation, supporting multiple Sleep modes (IDLE, STANDBY, BACKUP) with consumption as low as a few microamps, making it suitable for battery-powered and energy-harvesting applications. The 48MHz Cortex-M0+ core with single-cycle multiplier provides strong integer performance for control loops, while the Event System and DMA enable low-overhead peripheral chaining.
Typical applications include industrial lighting control, brushless DC (BLDC) motor drive, USB-equipped consumer devices, IoT sensor hubs, and human-machine interface (HMI) controllers. The wide temperature range and AEC-Q100 grade also support automotive body electronics and dashboard modules.
When designing with this MCU, provide adequate decoupling (100nF + bulk capacitor near each VDD pin), keep the 32.768KHz crystal traces symmetric, and reserve a SWD header (SWDIO/SWDCLK/RESET/GND) on the PCB for in-circuit programming. The Cortex-M0+ core has no hardware FPU, so favour fixed-point math in DSP loops to avoid CPU saturation.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design considerations not consolidated in the manufacturer datasheet, providing actionable procurement and design value for engineering teams.
Drop-in-Alternativen für ATSAMD21E15L-AFT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATSAMD21E15L-AFT (gleiche Bauform und Footprint) – abweichend in ADC, Communication Interfaces, Operating Temperature Range, DAC, Package.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATSAMD21E16L-AF
✅ Drop-In✓ Auf Lager
$1.85 / Stück
Datenblatt ansehen →ATSAMD21E17L-AFT
✅ Drop-In✓ Auf Lager
$2.7 / Stück
Datenblatt ansehen →ATSAMD21E15B-AFT
✅ Drop-In✓ Auf Lager
$1.96 / Stück
Datenblatt ansehen →ATSAMD21E15L-MFT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATSAMD20E15A-AU
✅ Drop-In✓ Auf Lager
$1.84 / Stück
Datenblatt ansehen →ATSAMD21E15L-AFT Grenzwerte & elektrische Eigenschaften
| Core Architecture | ARM Cortex-M0+ |
| CPU Bit Width | 32-bit |
| Maximale Taktfrequenz | 48 MHz |
| Flash Program Memory | 32 KB |
| SRAM | 4 KB |
| Supply Voltage Range | 1.6 V to 3.6 V |
| Betriebstemperaturbereich | -40C to +125C |
| Gehäuse | 32-pin TQFP (7x7 mm) |
| ADC | 12-bit, up to 20 channels |
| DAC | 10-bit, 1 channel |
| USB Interface | USB 2.0 Full-Speed Device |
| Communication Interfaces | SERCOM x6 (UART/SPI/I2C configurable) |
| Timers / PWM Channels | TC x3, TCC x3, up to 6 PWM channels |
| Touch Controller | Peripheral Touch Controller (PTC) |
| Automotive Qualification | AEC-Q100 |
| Functional Safety | FuSa documentation package |
| DMA Channels | 12 channels |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
ATSAMD21E15L-AFT 32-pin tqfp (7x7 mm) Pinbelegungsleitfaden
Pinbelegung für ATSAMD21E15L-AFT (32-pin tqfp (7x7 mm)-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für ATSAMD21E15L-AFT.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
ATSAMD21E15L-AFT ist geeignet für 6 Anwendungs: Industrial LED Lighting Control, Brushless DC Motor Control, USB-Equipped Consumer Devices, IoT Sensor Hubs, Human-Machine Interface (HMI) Controllers, Automotive Body Electronics.
Industrial LED Lighting Control
The ATSAMD21E15L-AFT's 48 MHz Cortex-M0+ core, 6-channel PWM timer (TCC), and 12-bit ADC deliver precise current control for LED dimming and colour-mixing drivers. With 32 KB Flash and 4 KB SRAM, the MCU runs LED control protocols (DMX-512, DALI, 0-10V) directly while the integrated ADC samples driver feedback for closed-loop brightness regulation. The 1.6V-3.6V supply range supports direct 3.3V regulator operation, and the AEC-Q100 grade plus -40C to +125C temperature range allow deployment in outdoor luminaires and industrial fixtures.
Empfohlen
Brushless DC Motor Control
The ATSAMD21E15L-AFT's TCC timer blocks generate complementary 6-step PWM or FOC waveforms driving 3-phase BLDC motors, while the 12-bit ADC samples back-EMF or phase current with sub-microsecond conversion latency. The DMA engine chains ADC-to-PWM updates without CPU intervention, allowing the Cortex-M0+ core to focus on the control law. With the SERCOM blocks configurable as SPI or UART, the MCU connects to position sensors or CAN bus transceivers in industrial servo systems, all within the automotive AEC-Q100 envelope.
Empfohlen
USB-Equipped Consumer Devices
The ATSAMD21E15L-AFT integrates a USB 2.0 Full-Speed Device interface with on-chip PHY, enabling direct connection to USB hosts without external transceivers. Combined with 32 KB Flash for HID/CDF/CDC class stacks and six SERCOM blocks for SPI/I2C sensors, the MCU fits mid-tier consumer products like USB input devices, programmable controllers, or data loggers. The 1.6V-3.6V operating range supports single-cell Li-ion power rails, and the AEC-Q100 grade gives robustness margin in hand-held designs.
Empfohlen
IoT Sensor Hubs
The ATSAMD21E15L-AFT's six SERCOM interfaces support simultaneous I2C/SPI/UART sensor connections (temperature, humidity, accelerometers, pressure), while its Sleep/Standby modes reduce current to single-digit microamps for battery-powered IoT nodes. The Peripheral Touch Controller (PTC) enables capacitive user interfaces without external touch ICs. With 32 KB Flash, typical IoT firmware (sensor drivers + BLE/HVAC/MQTT client) fits comfortably, and the 48 MHz clock ensures sub-100ms wake-to-publish latency on event triggers.
Empfohlen
Human-Machine Interface (HMI) Controllers
The ATSAMD21E15L-AFT drives small TFT displays and resistive touch panels via SPI-controlled display drivers and the integrated 12-bit ADC reading touch coordinates. The DAC outputs audio feedback tones for button-press confirmation, and the SERCOM blocks support I2C GPIO expanders for LED indicators and keypads. With 32 KB Flash, full LVGL/Adafruit-GFX graphics stacks can run on the 48 MHz core, while the AEC-Q100 grade allows panel-mount use in industrial machinery HMI.
Empfohlen
Automotive Body Electronics
The ATSAMD21E15L-AFT's AEC-Q100 qualification and -40C to +125C temperature grade target automotive body modules such as door controllers, mirror adjusters, ambient lighting, and seat-position modules. The SERCOM blocks map to LIN transceivers (UART mode) or CAN bus drivers via SPI, while the 6-channel PWM drives LED strings and small motors. Functional Safety (FuSa) documentation supports ISO 26262 ASIL-B system integration at the application layer, and the 32 KB Flash accommodates OBD-II diagnostics and J1939 stacks.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATSAMD21E15L-AFT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATSAMD21E16L-AF | ATSAMD21E17L-AFT | ATSAMD21E15B-AFT | ATSAMD21E15L-MFT | ATSAMD20E15A-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 32-pin TQFP (7x7 mm) | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same |
| Flash Memory | 32 KB | 64 KB | 128 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 8 KB | 4 KB | 4 KB | 4 KB |
| Core / Max Clock | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz |
| Operating Temperature | -40C to +125C | -40C to +85C (commercial) | -40C to +125C | 0C to +70C (commercial) | -40C to +125C | -40C to +85C |
| AEC-Q100 Qualified | Yes | No | Yes | No | Yes | No |
| USB 2.0 Full-Speed | Yes | Yes | Yes | Yes | Yes | No (SAM D20 family) |
| Supply Voltage | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V |
| Approx. Unit Price @ 1k | $1.70 | $1.85 | $2.10 | $1.55 | $1.70 | $1.45 |
Wichtigste Unterscheidungsmerkmale
- Smallest Flash in SAM D21 family with USB still enabled (vs. ATSAMD21E17L-AFT)
- AEC-Q100 automotive qualification at lowest price point (vs. ATSAMD21E15B-AFT)
- Integrated USB Full-Speed with on-chip PHY (vs. ATSAMD20E15A-AU)
Designhinweise
Decouple each VDD pin pair (VDDIO/VDDANA/VDDCORE) with a 100 nF X7R ceramic capacitor within 2 mm of the pin, plus a bulk 4.7 uF tantalum or aluminum polymer capacitor on the 3.3V rail. The SAM D21's internal LDO powers the core from VDDANA; noisy VDDANA ripples propagate to VDDIO. Place the ferrite bead between analog and digital 3.3V planes if precision ADC measurements are needed at >10 kHz sampling rates.
Estimated: at maximum 48 MHz active current of 7 mA and 3.6V supply, the part dissipates approximately 25 mW, well within the 32-pin TQFP's theta_JA of 39 C/W on a 4-layer 1oz copper PCB. Junction temperature rise above ambient is only ~1C, so no heatsink is required. However, if USB is active in high-traffic host scenarios, current can spike to 25 mA (15k peak), warranting thermal copper relief around the TQFP land pad.
Reserve a 2x5 0.05-inch SWD header footprint on the PCB for the Atmel-ICE or J-Link debugger, with SWDIO/SWDCLK/RESET/GND/VTG pins. Route SWDIO and SWDCLK as 50-ohm impedance traces under 50 mm length to avoid debugger errors. Avoid routing high-frequency signals (PWM >1 MHz, USB DP/DM) across the SWD trace to prevent debugging glitches during firmware bring-up.
Do not skip the 32.768 kHz crystal load capacitor calculation: with the XIN32/XOUT32 internal loading of 7 pF and a typical crystal C0 of 1 pF, use 12 pF external caps to hit the rated +/-20 ppm accuracy. Also enable the asynchronous clock source bit in the SYSCTRL when using the RTC, otherwise the RTC drifts several seconds per day. Finally, lock the GCLK0 configuration before switching CPU clock to PLL, since changing GCLK0 sources while the CPU is fed from it will halt the core.
The USB DP/DM traces require 90-ohm differential impedance, ground-referenced coplanar waveguide with grounded guard traces, and a maximum length of 50 mm on FR-4 to pass USB compliance. The 12-bit ADC achieves specified linearity only when the analog supply is clean: route VDDANA through a ferrite bead from the digital 3.3V rail and place a 10 nF + 1 uF + 10 uF capacitor network on VDDANA within 3 mm of the pin to suppress digital switching noise coupling into ADC samples.
Compliance-Informationen
AEC-Q100 qualified per Microchip product page. RoHS and REACH compliant. Lead-free and halogen-free per SAM D21 family datasheet. Conflict minerals compliance stated on Microchip's corporate responsibility page.
