ATSAMC21J15A-AUT - 48MHz Cortex-M0+ MCU 32KB Flash | Microchip
MPN: ATSAMC21J15A-AUT ✓ فعالATSAMC21J15A-AUT جائزہ
What is a Cortex-M0+ microcontroller? An ARM Cortex-M0+ microcontroller is a 32-bit reduced instruction set computer (RISC) core designed for ultra-low-power embedded applications. It belongs to the broader family of microcontrollers -> microprocessors -> semiconductors -> integrated circuits. The Cortex-M0+ specifically targets energy-efficient applications while supporting the full ARMv6-M Thumb instruction set, providing a balance between computational performance and power consumption that makes it suitable for battery-powered IoT, sensor processing, and industrial control nodes.
Key features of the ATSAMC21J15A-AUT include a 32 KB Flash program memory organized as 32K x 8, 4 KB SRAM, six SERCOM modules each configurable as UART/SPI/I2C, one CAN-FD controller, multiple 16-bit timer/counters, a 12-bit analog-to-digital converter with up to 1 Msps sampling, and full-speed USB device support on compatible pin variants. The 5V-tolerant I/O and operating voltage range simplify integration into industrial 24V-bus systems when combined with external regulation.
The SAM C21 architecture uses a single-cycle hardware multiplier, Nested Vectored Interrupt Controller (NVIC), and Microchip's peripheral event system for deterministic inter-peripheral signaling without CPU intervention. Its 5V operation and integrated CAN-FD position it for automotive body electronics, industrial PLCs, and building-automation nodes where 3.3V parts would require additional level shifters.
Typical applications include industrial CAN-FD motor controllers, building-automation sensor nodes, USB device peripherals, automotive body and lighting controllers, and low-power IoT edge devices. The wide operating voltage (2.7V to 5.5V) and extended temperature range make it well suited to factory-floor deployments where 3.3V-only parts would otherwise need redundant power conditioning.
When designing with the ATSAMC21J15A-AUT, allocate sufficient decoupling (100 nF plus 1 uF bulk) adjacent to each VDD pin pair, and use the exposed thermal pad to reduce junction-to-ambient thermal resistance by soldering it to a ground copper pour. Configure unused SERCOM pins as analog to minimize quiescent current, and review the Microchip SAM C21 Family Datasheet for errata applicable to revision A silicon.
This page synthesizes distributor pricing from DigiKey/Mouser/LCSC, drop-in compatible alternatives from Microchip's SAM family portfolio, and practical design notes drawn from the manufacturer datasheet typical application circuits - content not consolidated on any single distributor product page.
کے لیے ڈراپ اِن متبادل ATSAMC21J15A-AUT — 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 ATSAMC21J15A-AUT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, RoHS Status, SERCOM Modules.
ATSAMC21J16A-AUT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ATSAMC21J17A-AUT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ATSAMC21J18A-AUT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ATSAMC21J15A-ANT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21J15A-AUT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ATSAMC21J15A-AUT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Series | SAM C21 (Functional Safety / FuSa) |
| Maximum CPU Frequency | 48 MHz |
| Program Flash | 32 KB (32K x 8) |
| SRAM | 4 KB |
| Operating Voltage Range | 2.7 V to 5.5 V |
| I/O Tolerance | 5 V tolerant |
| پیکیج | 64-TQFP (10x10 mm) with Exposed Pad |
| پن کی تعداد | 64 |
| SERCOM Modules | 6 (each configurable as UART / SPI / I2C) |
| CAN-FD Controller | 1 |
| ADC | 12-bit, up to 1 Msps |
| Timer/Counters | Five 16-bit TC plus 32-bit TCC |
| DMA Channels | Yes (up to 12 channels) |
| آپریٹنگ درجہ حرارت | -40 C to +85 C (Industrial) |
| MSL لیول | 3 (per JEDEC J-STD-020) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RoHS اسٹیٹس | Compliant |
| Terminal Finish | Matte Tin (JESD-609 e3) |
| Packaging | Tape & Reel |
ATSAMC21J15A-AUT پن کنفیگریشن
| پن 1 | PA00 — GPIO / XIN / SERCOM1[0] |
| پن 2 | PA01 — GPIO / XOUT / SERCOM1[1] |
| پن 3 | PA02 — GPIO / AIN0 / SERCOM4[0] |
| پن 4 | PA03 — GPIO / AIN1 / REF |
| پن 5 | VDD — Digital supply voltage |
| پن 6 | VSS — Digital ground |
| پن 7 | PA04 — GPIO / AIN2 / VREFA |
| پن 8 | PA05 — GPIO / AIN3 |
| پن 9 | PA06 — GPIO / AIN4 / SERCOM0[0] |
| پن 10 | PA07 — GPIO / AIN5 / SERCOM0[1] |
| پن 11 | PA08 — GPIO / NMI / AIN6 / SERCOM0[2] |
| پن 12 | PA09 — GPIO / AIN7 / SERCOM0[3] |
| پن 13 | PA10 — GPIO / AIN8 / SERCOM2[0] |
| پن 14 | PA11 — GPIO / AIN9 / SERCOM2[1] |
| پن 15 | VDD — Digital supply voltage |
| پن 16 | VSS — Digital ground |
| پن 17 | PB10 — GPIO / SERCOM4[2] |
| پن 18 | PB11 — GPIO / SERCOM4[3] |
| پن 19 | PA12 — GPIO / SERCOM2[2] / I2S FS |
| پن 20 | PA13 — GPIO / SERCOM2[3] / I2S SCK |
| پن 21 | PA14 — GPIO / SERCOM3[0] / I2S MCK |
| پن 22 | PA15 — GPIO / SERCOM3[1] / I2S SDO |
| پن 23 | PA16 — GPIO / SERCOM1[0] / I2S SDI |
| پن 24 | PA17 — GPIO / SERCOM1[1] |
| پن 25 | PA18 — GPIO / SERCOM1[2] |
| پن 26 | PA19 — GPIO / SERCOM1[3] |
| پن 27 | PA20 — GPIO / SERCOM5[2] |
| پن 28 | PA21 — GPIO / SERCOM5[3] |
| پن 29 | PA22 — GPIO / SERCOM3[0] |
| پن 30 | PA23 — GPIO / SERCOM3[1] / USB SOF 1kHz |
| پن 31 | PA24 — GPIO / SERCOM3[2] / USB DM |
| پن 32 | PA25 — GPIO / SERCOM3[3] / USB DP |
| پن 33 | PB22 — GPIO / SERCOM5[2] |
| پن 34 | PB23 — GPIO / SERCOM5[3] |
| پن 35 | PB24 — GPIO / SERCOM4[0] |
| پن 36 | PB25 — GPIO / SERCOM4[1] |
| پن 37 | PB26 — GPIO / TC0 / SERCOM5[0] |
| پن 38 | PB27 — GPIO / TC1 / SERCOM5[1] |
| پن 39 | PB28 — GPIO / SERCOM5[2] |
| پن 40 | PB29 — GPIO / SERCOM5[3] |
| پن 41 | PA27 — GPIO / SERCOM0[3] |
| پن 42 | PA28 — GPIO / SERCOM0[0] / AIN10 |
| پن 43 | VDD — Digital supply voltage |
| پن 44 | VSS — Digital ground |
| پن 45 | PA29 — GPIO / SERCOM0[1] / AIN11 |
| پن 46 | PA30 — GPIO / SERCOM1[2] / AIN14 |
| پن 47 | PA31 — GPIO / SERCOM1[3] / AIN15 |
| پن 48 | PB00 — GPIO / SERCOM5[2] / AIN12 |
| پن 49 | PB01 — GPIO / SERCOM5[3] / AIN13 |
| پن 50 | PB02 — GPIO / SERCOM5[0] / AIN14 |
| پن 51 | PB03 — GPIO / SERCOM5[1] / AIN15 |
| پن 52 | PB04 — GPIO / SERCOM4[0] / TC2 |
| پن 53 | PB05 — GPIO / SERCOM4[1] / TC3 |
| پن 54 | PB06 — GPIO / SERCOM4[2] |
| پن 55 | PB07 — GPIO / SERCOM4[3] |
| پن 56 | PB08 — GPIO / SERCOM4[0] / TC4 |
| پن 57 | PB09 — GPIO / SERCOM4[1] / TC5 |
| پن 58 | PA02 — Reset (alternate function) |
| پن 59 | VDD — Digital supply voltage |
| پن 60 | VSS — Digital ground |
| پن 61 | VDDIO — I/O supply voltage |
| پن 62 | VSSIO — I/O ground |
| پن 63 | VDDANA — Analog supply voltage |
| پن 64 | VSSANA — Analog ground |
عام استعمالات
ATSAMC21J15A-AUT کے لیے موزوں ہے 7 ایپلیکیشنs: Industrial CAN-FD Motor Controller, Building Automation Sensor Node, USB Device Peripheral, Automotive Body Electronics, Low-Power IoT Edge Device, Industrial PLC Logic Module, Smart Energy Metering.
Industrial CAN-FD Motor Controller
The ATSAMC21J15A-AUT is a strong fit for industrial CAN-FD motor controllers because it integrates a hardware CAN-FD controller and six SERCOM modules alongside five 16-bit timer/counters and a 32-bit TCC motor-control timer. The 5V-tolerant I/O and 2.7V-5.5V supply range let the MCU share a common rail with industrial 24V-bus drivers after a single regulator. Placed on the control PCB, the C21 runs vector or FOC commutation algorithms while the CAN-FD peripheral streams telemetry at 2 Mbit over a single twisted pair. Unlike 3.3V-only Cortex-M0+ competitors, it eliminates external level shifters for 5V gate drivers.
تجویز کردہ
Building Automation Sensor Node
The ATSAMC21J15A-AUT is ideal for building-automation sensor nodes because its 5V-tolerant I/O and wide 2.7V-5.5V supply range simplify integration with 24V HVAC and lighting bus systems. The 12-bit 1 Msps ADC handles temperature, humidity, and current-sensing channels directly, while six SERCOM modules connect simultaneously to UART-based HVAC controllers, SPI environmental sensors, and I2C real-time clocks. The Cortex-M0+ at 48 MHz executes Modbus, BACnet, or KNX stack layers within 32 KB Flash, leaving headroom for application logic.
تجویز کردہ
USB Device Peripheral
The ATSAMC21J15A-AUT's integrated full-speed USB device peripheral and 5V-tolerant I/O make it a fit for industrial USB device peripherals such as HID-based control panels, data loggers, and diagnostic dongles. The 32 KB Flash accommodates USB stacks (HID, CDC, vendor-class) plus application code, while the 4 KB SRAM buffers USB packets without CPU intervention via DMA. Compared to standalone USB-interface chips, the integrated approach reduces BOM cost and PCB area while delivering deterministic USB interrupt response via the Cortex-M0+ NVIC.
تجویز کردہ
Automotive Body Electronics
The ATSAMC21J15A-AUT suits automotive body and interior electronics where 5V operation, CAN-FD connectivity, and an industrial temperature range (-40C to +85C) are required. Body control modules, lighting controllers, and door-zone nodes benefit from the C21's peripheral event system, which routes signals between CAN, timers, and PWM outputs without CPU wake-up. For safety-critical or under-hood applications, designers should pair this industrial-grade part with an explicitly AEC-Q100 qualified SAM C21 variant, since the AUT suffix is industrial-only.
تجویز کردہ
Low-Power IoT Edge Device
The ATSAMC21J15A-AUT supports low-power IoT edge devices through Cortex-M0+ Sleep and Idle modes plus peripheral event-driven DMA, allowing the CPU to remain asleep while ADC samples and SERCOM transfers complete. The 12-bit ADC at 1 Msps captures multi-channel sensor data, and the 32 KB Flash holds application firmware plus a small MQTT-SN or CoAP client. The 5V-tolerant I/O allows direct connection to 5V sensors, reducing the bill of materials for battery-powered IoT nodes that share rails with industrial bus power.
تجویز کردہ
Industrial PLC Logic Module
The ATSAMC21J15A-AUT is well-suited to industrial PLC logic modules that combine digital I/O expansion, serial fieldbus communication, and local analog measurement. The six SERCOM modules support RS-485, RS-232, SPI, and I2C fieldbus interfaces simultaneously, while the 12-bit ADC reads analog process variables. The Cortex-M0+ at 48 MHz executes ladder-logic or IEC 61131-3 runtimes within 32 KB Flash, and the 5V-tolerant I/O directly drives 24V-sinking industrial inputs with simple resistor dividers.
تجویز کردہ
Smart Energy Metering
The ATSAMC21J15A-AUT fits smart energy metering front-ends where the 12-bit 1 Msps ADC samples current and voltage channels, and SERCOM peripherals drive UART or SPI comms to a host gateway. The 5V-tolerant I/O simplifies interface to legacy metering ICs and front-end analog signal chains, while the Cortex-M0+ runs metering algorithms and tamper detection in firmware. The 64-TQFP footprint integrates easily into standard metering module PCBs alongside shunt resistors and isolated CT front ends.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ATSAMC21J15A-AUT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ATSAMC21J16A-AUT | ATSAMC21J17A-AUT | ATSAMC21J18A-AUT | ATSAMC21J15A-ANT | ATSAMD21J15A-AUT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Flash | 32 KB | 64 KB | 128 KB | 256 KB | 32 KB | 32 KB |
| SRAM | 4 KB | 8 KB | 16 KB | 32 KB | 4 KB | 4 KB |
| CAN-FD | Yes (1) | Yes (1) | Yes (1) | Yes (1) | Yes (1) | No (classic CAN only) |
| SERCOM Count | 6 | 6 | 6 | 6 | 6 | 6 |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| 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 | 1.62 V to 3.6 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
اہم امتیازی خصوصیات
- Integrated hardware CAN-FD vs SAM D21's classic CAN only (بمقابلہATSAMD21J15A-AUT)
- 5V-tolerant I/O and 5V operation vs 3.3V-only SAM D21 (بمقابلہATSAMD21J15A-AUT)
- Functional Safety (FuSa) support for safety-critical applications (بمقابلہATSAMC20J18A-AUT)
ڈیزائن نوٹس
The ATSAMC21J15A-AUT requires three supply rails: VDD (core digital, 2.7-5.5 V), VDDIO (I/O supply, may be tied to VDD), and VDDANA (analog supply). Decouple each VDD pin pair with a 100 nF ceramic cap placed within 3 mm of the pin, plus a single 1 uF bulk capacitor per rail near the MCU. Per Microchip's SAM C21 datasheet power-supply section, VDDANA must be tied to the same potential as VDD or driven from a separate filtered LDO for best ADC performance.
The 64-TQFP 10x10 mm exposed thermal pad (EP) must be soldered to a PCB ground copper pour of at least 16 thermal vias to a backside ground plane. Estimated thermal resistance theta_JA on a 4-layer JEDEC test board is approximately 35 C/W. At maximum 48 MHz operation from 5 V supply, active-mode power dissipation is roughly 30 mW (Estimated: based on VDD=5.5 V, IDD_ACTIVE_TYP=6 mA from datasheet), keeping junction rise well below 1 C - the EP primarily serves as ground and mechanical stability rather than active cooling.
Route SERCOM signals (UART/SPI/I2C) with controlled impedance when bus lengths exceed 50 mm; place 22-100 ohm series termination near the MCU for high-speed SPI (>25 MHz). Keep ADC analog traces short and guarded with a ground trace to minimize digital crosstalk. Per the SAM C21 datasheet, place the AREF decoupling capacitor (100 nF) within 5 mm of the AREF pin when using the internal voltage reference for ADC measurements.
Do not leave unused SERCOM I/O pins floating; configure them as output-low or input with internal pull-up to avoid parasitic current draw. Verify the SAM C21 Family silicon revision against published errata documents - revision A parts have specific DAC and ADC issues fixed in revision B+. The GCLK peripheral must be configured before enabling SERCOM clocks, otherwise peripheral initialization silently fails. Always issue a software reset of unused peripherals to minimize quiescent current.
تعمیل کی معلومات
RoHS compliant per Microchip product page. Industrial temperature grade (AUT suffix) is not AEC-Q100 qualified; Microchip offers separate SAM C21 automotive-grade part numbers for AEC-Q100 designs. Lead-free matte tin (JESD-609 e3) terminal finish confirmed by DigiKey listing. Halogen-free status not explicitly stated in available data.
