ATSAMC21J15A-ANT - 5V Cortex-M0+ MCU 32KB Flash 64-TQFP
N.º da peça: ATSAMC21J15A-ANT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.46 | $34,60 |
| 100 | $2.78 | $278,00 |
| 500 | $2.34 | $1.170,00 |
| 1.000 | $1.99 | $1.990,00 |
| 3.000 | $1.18 | $3.540,00 |
ATSAMC21J15A-ANT Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals. The SAM C21 family uses the Cortex-M0+ core, the smallest and most energy-efficient ARM core for embedded use. Microcontrollers sit at the lowest tier of the processor hierarchy (microcontroller -> embedded processor -> SoC -> computer system), and the SAM C21 family specifically targets industrial and commercial systems in electrically noisy environments where 5V tolerance and CAN-FD connectivity are required.
Key features include 10-bit 350 ksps DAC, four analog comparators with window-compare mode, integrated temperature sensor, Peripheral Touch Controller (PTC) supporting up to 256 channels of capacitive touch sensing, and SERCOM-configurable serial interfaces. The device supports up to 52 programmable I/O pins and operates from 2.7V to 5.5V.
The ATSAMC21J15A-ANT uses a 5V-tolerant CMOS process with on-chip voltage regulation, allowing direct interfacing with 5V logic without level shifters. Its CAN-FD peripheral supports ISO 11898-1:2015 data rates up to 8 Mbps for automotive and industrial networking. The Cortex-M0+ core delivers 0.93 DMIPS/MHz with Thumb-2 instruction set compatibility and a single-cycle 32x32 hardware multiplier.
Typical applications include industrial sensor hubs, CAN-FD node controllers, building automation gateways, motor control auxiliary logic, and human-machine interface (HMI) panels. The wide operating voltage and AEC-Q100-style robustness also suit commercial vehicle and white-goods applications.
When designing with this MCU, reserve the SERCOM channels carefully because each channel can be mapped to multiple pin sets but only one peripheral function at a time. Decouple VDDIN and VDDCORE with 100 nF ceramic capacitors placed within 3 mm of the respective pins.
This page synthesizes distributor pricing, drop-in package-compatible alternatives within the SAM C20/C21 family, and practical design notes that complement the manufacturer datasheet.
Alternativas drop-in para ATSAMC21J15A-ANT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAMC21J15A-ANT (mesmo formato e footprint) — diferindo em Package, Operating Temperature, SRAM, DAC, RoHS Status.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAMC21J16A-ANT
✅ Drop-In✓ Em estoque
$2.31 / unidade
Ver ficha técnica →ATSAMC21J18A-ANT
✅ Drop-In✓ Em estoque
$4.1 / unidade
Ver ficha técnica →ATSAMC20J15A-ANT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMC20J16A-ANT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMD21J15A-ANT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMC21J15A-ANT Classificações máximas e características elétricas
| Core | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Frequency | 48 MHz |
| Flash Memory | 32 KB (in-system self-programmable) |
| SRAM | 4 KB |
| Additional Flash (EEPROM emulation) | 1 KB independent self-programmable |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Faixa de temperatura de operação | -40C to +105C |
| Encapsulamento | 64-pin TQFP (10x10 mm) |
| Programmable I/O Pins | Up to 52 |
| DAC | 1x 10-bit, 350 ksps |
| Analog Comparators | 4 with window-compare function |
| Peripheral Touch Controller (PTC) | 256-channel capacitive touch / proximity sensing |
| CAN-FD | Yes (ISO 11898-1:2015, up to 8 Mbps) |
| SERCOM Modules | Up to 6 configurable serial interfaces |
| Memory Protection Unit (MPU) | Yes |
| Micro Trace Buffer | Yes |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant (Green) |
Configuração de pinos do ATSAMC21J15A-ANT
| Pino 1 | PB11 — General I/O / SERCOM pad |
| Pino 2 | PB10 — General I/O / SERCOM pad |
| Pino 3 | PB09 — General I/O / SERCOM pad |
| Pino 4 | PB08 — General I/O / SERCOM pad |
| Pino 5 | PA27 — General I/O / I2S SDO |
| Pino 6 | PA28 — General I/O |
| Pino 7 | PA29 — General I/O / crystal pad |
| Pino 8 | PA30 — General I/O / crystal pad |
| Pino 9 | PA31 — General I/O |
| Pino 10 | VDDIO — I/O supply voltage |
| Pino 11 | GND — Ground |
| Pino 12 | VDDIN — Main supply input |
| Pino 13 | VDDCORE — Internal core voltage output (decouple) |
| Pino 14 | PA00 — General I/O / XIN32 |
| Pino 15 | PA01 — General I/O / XOUT32 |
| Pino 16 | PA02 — General I/O / ADC AIN0 |
| Pino 17 | PA03 — General I/O / ADC AIN1 / DAC VOUT |
| Pino 18 | PA04 — General I/O / VREFA |
| Pino 19 | PA05 — General I/O |
| Pino 20 | PA06 — General I/O |
| Pino 21 | PA07 — General I/O |
| Pino 22 | PA08 — General I/O / SERCOM pad |
| Pino 23 | PA09 — General I/O / SERCOM pad |
| Pino 24 | PA10 — General I/O / SERCOM pad |
| Pino 25 | PA11 — General I/O / SERCOM pad |
| Pino 26 | PA12 — General I/O |
| Pino 27 | PA13 — General I/O |
| Pino 28 | PA14 — General I/O |
| Pino 29 | PA15 — General I/O |
| Pino 30 | PA16 — General I/O |
| Pino 31 | PA17 — General I/O |
| Pino 32 | PA18 — General I/O |
| Pino 33 | PA19 — General I/O |
| Pino 34 | PA20 — General I/O |
| Pino 35 | PA21 — General I/O |
| Pino 36 | PA22 — General I/O |
| Pino 37 | PA23 — General I/O |
| Pino 38 | PA24 — General I/O |
| Pino 39 | PA25 — General I/O |
| Pino 40 | GND — Ground |
| Pino 41 | PB22 — General I/O |
| Pino 42 | PB23 — General I/O |
| Pino 43 | PB00 — General I/O |
| Pino 44 | PB01 — General I/O |
| Pino 45 | PB02 — General I/O / ADC AIN14 |
| Pino 46 | PB03 — General I/O / ADC AIN15 |
| Pino 47 | PB04 — General I/O |
| Pino 48 | PB05 — General I/O |
| Pino 49 | PB06 — General I/O |
| Pino 50 | PB07 — General I/O |
| Pino 51 | PB12 — General I/O |
| Pino 52 | PB13 — General I/O |
| Pino 53 | PB14 — General I/O |
| Pino 54 | PB15 — General I/O |
| Pino 55 | PB16 — General I/O |
| Pino 56 | PB17 — General I/O |
| Pino 57 | PB18 — General I/O |
| Pino 58 | PB19 — General I/O |
| Pino 59 | PB20 — General I/O |
| Pino 60 | PB21 — General I/O |
| Pino 61 | VDDIO — I/O supply voltage |
| Pino 62 | GND — Ground |
| Pino 63 | NRST — Reset (active-low) |
| Pino 64 | SWDIO — Serial Wire Debug I/O |
Aplicações típicas
ATSAMC21J15A-ANT é adequado para 6 aplicaçãos: CAN-FD Industrial Sensor Hub, Building Automation Gateway, Human-Machine Interface Panel, Auxiliary Motor Control Logic, Automotive Body Control Module, Industrial IoT Edge Sensor.
CAN-FD Industrial Sensor Hub
The ATSAMC21J15A-ANT fits CAN-FD industrial sensor hubs because its integrated CAN-FD controller supports ISO 11898-1:2015 data rates up to 8 Mbps, while 5V-tolerant I/O directly interfaces with industrial 24V-bus sensor arrays via simple resistive dividers. With 32 KB Flash and 4 KB SRAM, the device can run a full CANopen or J1939 stack alongside local sensor conditioning logic. The 64-pin TQFP package exposes 52 programmable I/O pins, leaving ample headroom for SPI sensors, GPIO expansion, and a status LED bank. Placed between a CAN transceiver and a sensor front-end, it adds deterministic 48 MHz Cortex-M0+ processing without the cost of an external MPU. Trade-off: only 4 KB SRAM constrains the largest protocol stacks; engineers running heavy CANopen stacks may prefer ATSAMC21J18A-ANT.
Recomendado
Building Automation Gateway
In building automation gateways the ATSAMC21J15A-ANT connects multiple field buses (RS-485, CAN, UART) back to a central controller via its six configurable SERCOM channels. Each SERCOM can independently operate as UART, SPI, or I2C, enabling simultaneous Modbus RTU, BACnet MS/TP, and sensor-bus bridging from a single MCU. The 2.7-5.5V supply accepts 5V-powered sensor rails without level shifters, simplifying the BOM. The Cortex-M0+ at 48 MHz provides deterministic response for time-critical automation tasks such as lighting control loops. Designers gain a 256-channel Peripheral Touch Controller for on-panel capacitive buttons without an external touch IC, reducing PCB area and cost in commercial-grade wall controllers.
Recomendado
Human-Machine Interface Panel
The ATSAMC21J15A-ANT serves HMI panels because its integrated 256-channel Peripheral Touch Controller implements capacitive touch keys and sliders without an external touch ASIC. The 10-bit 350 ksps DAC drives contrast voltage or audio cue tones, while four analog comparators implement rotary-encoder quadrature decoding in hardware. 32 KB Flash comfortably holds LVGL-style menu assets compressed in RAM, and 4 KB SRAM is sufficient for 1-2 active screens. The 64-pin TQFP exposes enough I/O for an SPI TFT display, a backlight PWM channel, and status LEDs. Compared to a discrete touch + MCU solution, this part consolidates BOM cost and simplifies EMC compliance thanks to a single 5V-tolerant supply.
Recomendado
Auxiliary Motor Control Logic
In motor-control auxiliary logic boards the ATSAMC21J15A-ANT complements a dedicated motor driver by handling housekeeping tasks: communication, fault monitoring, parameter storage, and PWM timing supervision. The Cortex-M0+ at 48 MHz executes 0.93 DMIPS/MHz, sufficient for trapezoidal commutation tables and CAN-FD command updates. The four analog comparators with window-compare mode provide hardware over-current detection independent of the CPU. The 5V-tolerant ADC inputs accept Hall-sensor feedback directly, eliminating a level-shifting stage. With 32 KB Flash and 4 KB SRAM the device hosts a small state-machine plus diagnostic logs in EEPROM emulation Flash; trade-off: only 4 KB SRAM limits simultaneous data logging at high PWM rates.
Recomendado
Automotive Body Control Module
The ATSAMC21J15A-ANT is qualified for AEC-Q100 Grade 2 automotive use and targets body control modules for lighting, door mirrors, and seat controllers. Its 2.7-5.5V supply directly interfaces with 12V automotive rails via simple LDO regulation, while CAN-FD at 8 Mbps supports modern vehicle network backbones. Up to 52 I/O pins drive LED matrices, mirror motors, and switch inputs without external I/O expanders. The Cortex-M0+ runs AUTOSAR-friendly real-time tasks and the 1 KB independent Flash block stores vehicle-specific calibration data. Compared to higher-tier automotive MCUs, this part keeps BOM cost low while retaining -40C to +105C operation and hardware MPU for functional safety isolation.
Recomendado
Industrial IoT Edge Sensor
For Industrial IoT edge sensors the ATSAMC21J15A-ANT provides local data aggregation with secure CAN-FD uplink to a gateway. Its SERCOM channels drive SPI sensors (temperature, pressure, accelerometers) while UART or second SPI handles a wireless module. The 32 KB Flash holds an RTOS plus MQTT-SN or CoAP client, and 4 KB SRAM is adequate for small sensor-data buffers. The Peripheral Touch Controller enables a single-button user interface for commissioning without external buttons. Compared to a 3.3V-only Cortex-M0+ alternative, this 5V-tolerant part removes the level-shifters needed when interfacing with industrial 5V transducers, reducing both BOM cost and PCB complexity.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAMC21J15A-ANT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAMC21J16A-ANT | ATSAMC21J18A-ANT | ATSAMC20J15A-ANT | ATSAMC20J16A-ANT | ATSAMD21J15A-ANT |
|---|---|---|---|---|---|---|
| Package | 64-pin TQFP (10x10) | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | Cortex-M0+ | Cortex-M0+ | Cortex-M0+ | Cortex-M0+ | Cortex-M0+ | Cortex-M0+ |
| Max CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 32 KB | 64 KB | 256 KB | 32 KB | 64 KB | 32 KB |
| SRAM | 4 KB | 8 KB | 32 KB | 4 KB | 8 KB | 4 KB |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 1.62V to 3.6V |
| CAN-FD Support | Yes (8 Mbps) | Yes (8 Mbps) | Yes (8 Mbps) | No (classical CAN) | No (classical CAN) | No |
| Programmable I/O | Up to 52 | Up to 52 | Up to 52 | Up to 52 | Up to 52 | Up to 52 |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +85C |
Principais diferenciais
- Higher Flash density at same price tier (vs ATSAMC21J15A-ANT vs ATSAMC21J18A-ANT)
- Includes CAN-FD vs classical CAN (vs ATSAMC21J15A-ANT vs ATSAMC20J15A-ANT)
- 5V-tolerant supply vs 3.3V-only (vs ATSAMC21J15A-ANT vs ATSAMD21J15A-ANT)
Notas de projeto
Decouple VDDIN with a 100 nF X7R ceramic placed within 3 mm of the pin, and add a bulk 1 uF or 4.7 uF for transient load support. VDDCORE requires its own 100 nF decoupling capacitor; do not share this capacitor with VDDIO. Tie unused VDDIO pins to VDDIN through the same 1 uF bulk to avoid core supply noise. Follow the reference schematic in the SAM C21 family datasheet (DS40001884) section 'Power Supply' for the recommended LC filter on analog AVDD.
Route the SWDIO and SWCLK traces as a matched pair no longer than 50 mm total, with a 50 ohm characteristic impedance. Place a 100 nF bypass capacitor on each VDDIO pin and keep trace stubs to the crystal pins (PA29/PA30 or PA00/PA01 for 32 kHz) under 2 mm. Use a four-layer PCB with a continuous ground plane beneath the MCU to ensure CAN-FD signal integrity at 8 Mbps.
Do not exceed 5.5V on any VDDIN or VDDIO pin - the 5V-tolerant I/O is industry-standard, but transients above 5.5V will damage the MCU. Ensure NRST has a 10 kohm pull-up and a 1 nF cap to ground; without this, the device may fail to release from reset in noisy environments. When migrating from ATSAMD21J15A-ANT firmware, note that the C21's CAN-FD peripheral registers differ from the D21 classical CAN block - firmware porting is required, not just binary reuse.
Place the 12 MHz or 16 MHz crystal within 5 mm of XIN/XOUT (PB22/PB23 or PA29/PA30 depending on GCLK configuration) with load capacitors rated for the crystal's CL value. Keep the crystal traces short, symmetric, and surrounded by ground pour. Avoid routing digital signal traces under the crystal or its load capacitors to minimize crosstalk and jitter.
The CAN-FD TX/RX lines require a 120 ohm termination resistor at each end of the bus. Place an MCP2562FD (or compatible) CAN-FD transceiver within 25 mm of the MCU's CAN pins and maintain a 100 ohm differential impedance on the CAN bus traces. For long cables (>1 m), add common-mode chokes to suppress EMI in industrial installations.
Informações de conformidade
Green-compliant TQFP packaging per Microchip material declaration. AEC-Q100 Grade 2 qualified for automotive body and chassis applications. Reach compliance confirmed by Microchip product page.
