ATSAMC21E15A-MUT - 48MHz Cortex-M0+ 5V MCU, 32KB Flash | Microchip
MPN: ATSAMC21E15A-MUT ✓ AktifATSAMC21E15A-MUT Ringkasan
What is a 5V Cortex-M0+ MCU? An ARM Cortex-M0+ microcontroller is the smallest, most energy-efficient core in the Cortex-M family, designed for deterministic 32-bit control in deeply embedded systems. A "5V" MCU means its I/O and supply rails are natively compatible with 5V analog and industrial logic, eliminating the level shifters that 1.8V/3.3V cores require in 24V industrial bus systems. Within the broader taxonomy, this device is a member of the microcontroller class of microcontrollers -> embedded MCUs -> ARM Cortex-M -> Cortex-M0+ -> 5V tolerant industrial MCUs.
Key features of the ATSAMC21E15A-MUT include a CAN-FD controller for modern automotive and industrial networking, six SERCOM modules configurable as UART/SPI/I2C, a 12-bit ADC, 10-bit DAC, and multiple timer/counter channels. The FuSa diagnostics library and brown-out detection simplify IEC 60730 Class B compliance for white goods, HVAC, and motor-control subsystems.
The architecture uses the Cortex-M0+ core with a 2-stage pipeline, Thumb-2 instruction set, and a single-cycle hardware multiplier that delivers deterministic interrupt response. An on-chip 32kHz ultra-low-power oscillator and a Fractional Digital Phase-Locked Loop (FDPLL) drive the 48MHz system clock while keeping sleep-mode currents low for energy-harvesting edge nodes.
Typical applications include industrial automation I/O modules, CAN-FD connected appliances, low-voltage motor drives, smart metering, and IoT edge nodes that require 5V tolerance and CAN connectivity without external transceivers. It is also widely used in functional-safety appliances where the integrated self-test firmware reduces BOM cost.
A key design consideration is decoupling the 5V and 1.5V internal LDO rails separately, keeping the analog AVCC pin isolated from noisy digital traces, and following the SAM C21 datasheet's reference layout for the VQFN-5x5 thermal pad to achieve the rated 85C operating range in forced-air designs.
This page synthesizes Microchip datasheet specifications, drop-in pin-compatible alternatives, and practical layout/decoupling notes not found on a single distributor listing - giving engineers a faster path from selection to bring-up.
Alternatif penggantian untuk ATSAMC21E15A-MUT — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian ATSAMC21E15A-MUT (sama faktor bentuk dan footprint) — berbeda di dalam Package, SRAM, ADC, DAC, MSL Level.
ATSAMC20E15A-MUT
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →ATSAMC21E16A-MUT
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
ATSAMC21E17A-MUT
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
ATSAMC21E18A-MUT
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →ATSAMC20E16A-MNT
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →ATSAMC20G15A-MUT
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →ATSAMC21E15A-MUT Rating Maksimal & Karakteristik Listrik
| Core Processor | ARM Cortex-M0+ |
| Core Size | 32-Bit Single-Core |
| Maximum CPU Speed | 48 MHz |
| Program Memory Type | Flash |
| Program Flash Size | 32 KB (32K x 8) |
| EEPROM Emulation Flash | 1 KB (independent self-programmable) |
| SRAM | 4 KB |
| Supply Voltage (VDD) | 2.7 V to 5.5 V |
| I/O Voltage | 5V tolerant |
| Suhu Kerja | -40C to +85C |
| Paket / Case | 32-VQFN (5x5 mm) with exposed thermal pad |
| Tipe Mounting | Surface Mount |
| CAN-FD | Yes (1 controller) |
| SERCOM Modules | 6 (configurable UART/SPI/I2C) |
| ADC / DAC | 12-bit ADC / 10-bit DAC |
| Functional Safety (FuSa) | IEC 60730 Class B support |
| RoHS | Compliant |
Konfigurasi Pin ATSAMC21E15A-MUT
| Pin produk 1 | PA00 — GPIO / SERCOM1 PAD0 / ADC AIN0 |
| Pin produk 2 | PA01 — GPIO / SERCOM1 PAD1 / ADC AIN1 |
| Pin produk 3 | PA02 — GPIO / SERCOM0 PAD0 / ADC AIN2 |
| Pin produk 4 | PA03 — GPIO / SERCOM0 PAD1 / ADC AIN3 / DAC VOUT |
| Pin produk 5 | PA04 — GPIO / SERCOM0 PAD2 / ADC AIN4 |
| Pin produk 6 | PA05 — GPIO / SERCOM0 PAD3 / ADC AIN5 |
| Pin produk 7 | PA06 — GPIO / SERCOM2 PAD0 / ADC AIN6 |
| Pin produk 8 | PA07 — GPIO / SERCOM2 PAD1 / ADC AIN7 |
| Pin produk 9 | PA08 — GPIO / SERCOM2 PAD2 / ADC AIN8 |
| Pin produk 10 | PA09 — GPIO / SERCOM2 PAD3 / ADC AIN9 |
| Pin produk 11 | PA10 — GPIO / SERCOM1 PAD2 / ADC AIN10 |
| Pin produk 12 | PA11 — GPIO / SERCOM1 PAD3 / ADC AIN11 |
| Pin produk 13 | PA12 — GPIO / SERCOM4 PAD0 |
| Pin produk 14 | PA13 — GPIO / SERCOM4 PAD1 |
| Pin produk 15 | PA14 — GPIO / SERCOM4 PAD2 |
| Pin produk 16 | PA15 — GPIO / SERCOM4 PAD3 |
| Pin produk 17 | PA16 — GPIO / SERCOM3 PAD0 / I2C SDA |
| Pin produk 18 | PA17 — GPIO / SERCOM3 PAD1 / I2C SCL |
| Pin produk 19 | PA18 — GPIO / SERCOM3 PAD2 |
| Pin produk 20 | PA19 — GPIO / SERCOM3 PAD3 |
| Pin produk 21 | PA20 — GPIO / SERCOM5 PAD2 |
| Pin produk 22 | PA21 — GPIO / SERCOM5 PAD3 |
| Pin produk 23 | PA22 — GPIO / SERCOM5 PAD0 |
| Pin produk 24 | PA23 — GPIO / SERCOM5 PAD1 |
| Pin produk 25 | PA24 — GPIO / SERCOM5 PAD2 alt |
| Pin produk 26 | PA25 — GPIO / SERCOM5 PAD3 alt |
| Pin produk 27 | PA27 — GPIO / SERCOM1 alt |
| Pin produk 28 | RESET — Active-low reset input |
| Pin produk 29 | GND — Ground |
| Pin produk 30 | VDDIO — I/O supply voltage (2.7V to 5.5V) |
| Pin produk 31 | VDDIN — Core voltage regulator input (2.7V to 5.5V) |
| Pin produk 32 | EP — Exposed thermal pad - connect to GND |
Aplikasi Umum
ATSAMC21E15A-MUT cocok untuk 6 aplikasis: Industrial CAN-FD Sensor Nodes, Functional Safety Appliance Control, Low-Voltage BLDC Motor Drives, Smart Electricity Metering, IoT Edge Nodes with 5V Sensors, Building Automation Controllers.
Industrial CAN-FD Sensor Nodes
The ATSAMC21E15A-MUT's on-chip CAN-FD controller combined with 5V-tolerant I/O makes it ideal for industrial sensor nodes mounted on 24V backplanes. Its 48MHz Cortex-M0+ core handles J1939 and CANopen stacks at 1 Mbit/s with deterministic interrupt latency from the NVIC hardware, while the 32KB Flash stores protocol libraries plus custom sensor-calibration data. The 2.7V-5.5V supply range allows the node to share a 5V rail with analog front-ends without level shifters. Estimated: at 48MHz active and 25C ambient, the 5x5 VQFN thermal pad keeps junction rise under 15C in still air - well within the 85C rating for sealed IP65 enclosures.
Direkomendasikan
Functional Safety Appliance Control
Designed-in Functional Safety (FuSa) diagnostics make the ATSAMC21E15A-MUT a strong fit for IEC 60730 Class B appliances such as washing machines, dishwashers, and induction cooktops. The on-chip self-test firmware library provides CPU register tests, program-counter monitoring, and clock-frequency checks, eliminating the need for an external safety MCU. With 32KB Flash and 4KB SRAM the part drives motor-control state machines plus HMI keypads via SERCOM, while six configurable SERCOM channels handle UART keypad scanning, SPI display drivers, and I2C sensor hubs. The 5V-tolerant I/O directly interfaces with TRIAC optocouplers used in mains-control stages.
Direkomendasikan
Low-Voltage BLDC Motor Drives
The ATSAMC21E15A-MUT delivers enough CPU horsepower to run sensorless BLDC commutation on a Cortex-M0+ at 48MHz while the integrated 12-bit ADC samples back-EMF at 50 ksps. Six SERCOM channels let the MCU drive three PWM phases, read Hall sensors via SPI, and publish telemetry on a CAN-FD bus simultaneously - all in a 32-pin VQFN (5x5) that fits inside the motor housing. Designers gain board-space savings by replacing an external CAN controller with the on-chip CAN-FD peripheral and using the 10-bit DAC for reference-voltage generation. The 5V-tolerant pins directly drive 5V gate-driver inputs without level translators.
Direkomendasikan
Smart Electricity Metering
The ATSAMC21E15A-MUT's combination of 32KB Flash, 4KB SRAM, a 12-bit ADC, and CAN-FD makes it a natural fit for residential smart-meter data concentrators and sub-metering nodes. The 12-bit ADC samples current shunts at up to 200 ksps, while the Cortex-M0+ core runs the metering algorithm and the CAN-FD controller pushes tariff data to a building-management network. Five-Volt tolerance lets the MCU share a single supply with the meter's analog front-end, reducing BOM cost. The device's 85C temperature rating covers outdoor cabinet deployments with sun load.
Direkomendasikan
IoT Edge Nodes with 5V Sensors
Industrial IoT edge gateways using legacy 5V sensors - such as 0-10V analog transducers, 24V digital inputs, and 5V UART RFID readers - benefit from the ATSAMC21E15A-MUT's native 5V I/O tolerance, eliminating level shifters on every analog input. Six SERCOM peripherals handle multiple UART sensor buses simultaneously while the on-chip CAN-FD pushes data to a local controller. The 32KB Flash and 4KB SRAM fit MQTT-SN over UART or CoAP over 6LoWPAN stacks for low-rate telemetry, and the 48MHz clock ensures <2 ms wake-to-publish latency for alarm events.
Direkomendasikan
Building Automation Controllers
Building-automation subsystems - HVAC controllers, lighting DALI gateways, and elevator I/O panels - use the ATSAMC21E15A-MUT's CAN-FD for backbone communication and its six SERCOM channels for multi-protocol sensor connectivity (DALI, Modbus, I2C temperature). The 5V-tolerant I/O directly drives 24V-to-5V divided inputs from field wiring, while the on-chip 12-bit ADC reads thermistor and pressure sensors at 1 ksps per channel. The 32KB Flash and 4KB SRAM are sufficient for control logic plus a small Modbus stack without requiring external memory. Its -40C to +85C rating covers unconditioned mechanical-room installations.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk ATSAMC21E15A-MUT — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | ATSAMC20E15A-MUT | ATSAMC21E16A-MUT | ATSAMC21E17A-MUT | ATSAMC21E18A-MUT | ATSAMC20E16A-MNT | ATSAMC20G15A-MUT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 32-VQFN (5x5) | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same |
| Core / Speed | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz |
| Flash | 32 KB | 32 KB | 48 KB | 64 KB | 64 KB | 48 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 8 KB | 4 KB | 4 KB |
| CAN-FD | Yes | No (CAN 2.0B only) | Yes | Yes | Yes | No (CAN 2.0B only) | No |
| Functional Safety (FuSa) | Yes | No | Yes | Yes | Yes | No | No |
| Operating Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
Diferensiator Kunci
- On-chip CAN-FD controller in 32-pin VQFN (vsATSAMC20E15A-MUT)
- Integrated Functional Safety (FuSa) library (vsATSAMC20E15A-MUT)
- Smallest Flash option in 32-pin CAN-FD SAM C21 family (vsATSAMC21E18A-MUT)
Catatan Desain
Decouple VDDIN and VDDIO independently with 100nF ceramic capacitors placed within 5mm of each pin. Add a bulk 4.7uF X7R capacitor to VDDIN to suppress load transients from internal regulator switching. Do not share VDDIN and VDDIO copper pours if the digital load is high; this prevents core-supply noise from coupling into the analog ADC reference. Estimated: at 48MHz active and 5V supply, the part draws approximately 7mA, so a 4.7uF bulk sustains VDD during 100us ADC bursts without significant droop.
The 32-VQFN exposed thermal pad (pin 32) MUST be soldered to a continuous ground copper pour with at least 8 thermal vias (0.3mm drill, 0.5mm pitch) directly under the die for proper heat dissipation. This connects to internal GND and provides the primary thermal path. Without proper pad soldering the junction temperature can exceed the 85C limit at only modest power dissipation. Estimated: with the recommended pad design on a 2-layer FR-4 board, theta_JA is approximately 39 C/W.
When migrating code from ATSAMC20 to ATSAMC21, the CAN-FD controller bit-field map differs - register offsets for the CAN-FD Message RAM are at 0x4200xxxx on C21 vs 0x4200xxxx on C20 but with different layouts. Failing to re-initialize the CAN peripheral after migration can lock the bus. Also note the SERCOM PAD multiplexing differs between revisions - always re-run the Atmel START pin-mux tool when porting firmware across SAM C20/C21 variants.
Informasi Konformitas
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for automotive AEC-Q100 parts, see ATSAMC21E15A-MUTA or SAM DA1 family. Halogen-free per Microchip environmental compliance statement.
