ATSAMD21J17A-AUT - SAM D21 Cortex-M0+ 48MHz MCU | Microchip
MPN: ATSAMD21J17A-AUT ✓ فعالATSAMD21J17A-AUT جائزہ
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (SRAM), and integrated peripherals such as timers, communication interfaces, and analog blocks. ARM Cortex-M0+ cores specifically target ultra-low-power embedded applications: they use the Thumb-2 instruction subset, offer single-cycle GPIO access, and integrate sleep modes that allow deep power-down while still waking on peripheral events. The SAM D21 family sits within Microchip's broader hierarchy of 8-bit PIC -> 16-bit PIC24 -> 32-bit SAM ARM Cortex-M microcontrollers, and is the company's M0+ flagship for consumer and industrial IoT.
Key features of the ATSAMD21J17A-AUT include up to 6 SERCOM (serial communication) interfaces configurable as I2C/SPI/UART, a 12-bit ADC with up to 20 channels, a 10-bit DAC, four 16-bit Timer/Counters, a 32-bit RTC, and a full-speed USB 2.0 device/host interface. The device operates from 1.6 V to 3.6 V and integrates an on-chip voltage regulator that simplifies single-rail designs. Hardware touch support (PTC) and a configurable Event System let designers route peripheral triggers without CPU intervention, reducing latency and power.
Architecturally, the SAM D21 uses a Harvard bus with separate AHB and APB bridges, allowing simultaneous Flash fetch and DMA transfer. The Cortex-M0+ core pairs with a Nested Vectored Interrupt Controller (NVIC) and a Wake-up Interrupt Controller (WIC) so deep-sleep currents remain in the microampere range. Advanced analog (ADC, DAC, comparators) and motor-control timers are inherited from Atmel's M0+ heritage, giving designers access to high-performance mixed-signal capability on a low-power core.
Typical applications include home automation endpoints, smart metering, consumer wearables, industrial sensor hubs, USB HID peripherals, and automotive body-electronics modules where -AUT grade is required. The wide SERCOM count (six) makes the part attractive for bridge designs that must speak multiple protocols (e.g., SPI sensor + I2C display + UART debug).
A key design consideration is the package pin-out: the 64-pin TQFP exposes 52 GPIO, leaving ample headroom for both functional pins and breadboard-friendly breakout. Ensure your PCB layout respects Microchip's recommended decoupling (100 nF + 4.7 uF bulk near VDDIN) and that the VDDCORE pin is left floating only if using the internal regulator (the default for VDDIN > 2.0 V).
This page synthesizes current distributor pricing, automotive-grade qualification, and drop-in alternatives in the SAM D21 family that engineers may not find in the standalone datasheet PDF.
کے لیے ڈراپ اِن متبادل ATSAMD21J17A-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 ATSAMD21J17A-AUT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Operating Temperature, USB, ADC, Package, DAC.
ATSAMD21J17A-AU
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21J18A-AUT
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21J18A-AU
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21J16B-AUT
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21J16B-AU
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21G18A-AUT
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ATSAMD21J17A-AUT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Series | SAM D21 |
| Core | ARM Cortex-M0+ |
| Core Size | 32-Bit |
| Maximum CPU Frequency | 48 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 16 KB |
| RWW Flash Partition | 4 KB |
| Supply Voltage (VDDIN) | 1.6 V to 3.6 V |
| آپریٹنگ درجہ حرارت | -40C to +85C (automotive grade) |
| پیکیج | 64-TQFP (10x10 mm) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Number of I/O | 52 (approx.) |
| SERCOM Interfaces | 6 (configurable I2C/SPI/UART) |
| ADC | 12-bit, up to 20 channels |
| DAC | 10-bit, 1 channel |
| USB | USB 2.0 Full-Speed Device/Host |
| Timers | Four 16-bit TCC/TC |
| RTC | 32-bit |
| Peripheral Touch (PTC) | Yes |
| Automotive Grade | Yes (-AUT suffix) |
| RoHS اسٹیٹس | Compliant |
| MSL لیول | 3 (per JEDEC J-STD-020) |
ATSAMD21J17A-AUT پن کنفیگریشن
| پن 1 | PA03 — GPIO/ADC/PTC |
| پن 2 | PA04 — GPIO/ADC/VOUT |
| پن 3 | PA05 — GPIO/ADC/PTC |
| پن 4 | PA06 — GPIO/ADC/PTC |
| پن 5 | PA07 — GPIO/ADC/PTC |
| پن 6 | PA08 — GPIO/NMI |
| پن 7 | PA09 — GPIO |
| پن 8 | PA10 — GPIO |
| پن 9 | PA11 — GPIO |
| پن 10 | VDDIO — IO supply voltage |
| پن 11 | VSS — Ground |
| پن 12 | PA12 — GPIO |
| پن 13 | PA13 — GPIO |
| پن 14 | PA14 — GPIO/XTAL32 |
| پن 15 | PA15 — GPIO/XTAL32 |
| پن 16 | PA16 — GPIO |
| پن 17 | PA17 — GPIO |
| پن 18 | PA18 — GPIO |
| پن 19 | PA19 — GPIO |
| پن 20 | PA20 — GPIO |
| پن 21 | PA21 — GPIO |
| پن 22 | PA22 — GPIO |
| پن 23 | PA23 — GPIO |
| پن 24 | PA24 — GPIO/USB_DM |
| پن 25 | PA25 — GPIO/USB_DP |
| پن 26 | PA26 — GPIO |
| پن 27 | PA27 — GPIO |
| پن 28 | PA28 — GPIO |
| پن 29 | PA30 — GPIO/SWCLK |
| پن 30 | PA31 — GPIO/SWDIO |
| پن 31 | PB00 — GPIO |
| پن 32 | PB01 — GPIO |
| پن 33 | PB02 — GPIO/ADC |
| پن 34 | PB03 — GPIO/ADC |
| پن 35 | PB04 — GPIO/ADC |
| پن 36 | PB05 — GPIO/ADC |
| پن 37 | PB06 — GPIO/ADC |
| پن 38 | PB07 — GPIO/ADC |
| پن 39 | PB08 — GPIO/ADC |
| پن 40 | PB09 — GPIO/ADC |
| پن 41 | PB10 — GPIO/ADC |
| پن 42 | PB11 — GPIO/ADC |
| پن 43 | PB12 — GPIO/ADC |
| پن 44 | PB13 — GPIO/ADC |
| پن 45 | PB14 — GPIO/ADC |
| پن 46 | PB15 — GPIO/ADC |
| پن 47 | PB16 — GPIO/ADC |
| پن 48 | PB17 — GPIO/ADC |
| پن 49 | PB18 — GPIO |
| پن 50 | PB19 — GPIO |
| پن 51 | PB20 — GPIO |
| پن 52 | PB21 — GPIO |
| پن 53 | PB22 — GPIO |
| پن 54 | PB23 — GPIO |
| پن 55 | PB24 — GPIO |
| پن 56 | PB25 — GPIO |
| پن 57 | VDDCORE — Internal LDO output (1.2V) |
| پن 58 | VDDIN — Main supply input |
| پن 59 | VDDIO — IO supply |
| پن 60 | VSS — Ground |
| پن 61 | PA00 — GPIO/XTAL |
| پن 62 | PA01 — GPIO/XTAL |
| پن 63 | PA02 — GPIO/ADC |
| پن 64 | RESETN — Reset (active low) |
عام استعمالات
ATSAMD21J17A-AUT کے لیے موزوں ہے 6 ایپلیکیشنs: Automotive Body Electronics Modules, Home Automation Hubs and Sensor Nodes, Smart Metering and Energy Monitoring, USB Human Interface Devices (HID), Industrial Sensor Hubs and IO-Link Masters, Wearable Consumer Devices.
Automotive Body Electronics Modules
The ATSAMD21J17A-AUT is qualified to the -AUT automotive grade, making it well-suited for body-electronics ECUs such as door modules, seat controllers, mirror adjusters, and HVAC blend-door actuators. The part's 48 MHz Cortex-M0+ core delivers sufficient compute for CAN/LIN gateway logic, while the six SERCOM interfaces can be flexibly mapped to LIN transceivers, PWM-driven LED drivers, and capacitive touch (PTC) sensors for back-lit switches. With 128 KB Flash and 16 KB SRAM, engineers can host a CANopen or UDS stack alongside application firmware. Automotive designers value the wide 1.6-3.6 V supply tolerance, which lets the MCU ride directly off a 3.3 V LDO downstream of load-dump protection.
تجویز کردہ
Home Automation Hubs and Sensor Nodes
The SAM D21's Cortex-M0+ core combined with low-power sleep modes makes the ATSAMD21J17A-AUT a strong fit for battery-powered home automation sensors (door/window contact, temperature, occupancy). With 128 KB Flash and 16 KB SRAM it can run Zigbee or Thread host stacks or act as a Matter bridge endpoint. The six configurable SERCOMs allow simultaneous I2C environmental sensor + SPI radio + UART debug. The 12-bit ADC with up to 20 channels supports multi-zone temperature or battery-current monitoring, while the built-in 32-bit RTC handles timekeeping in deep sleep. Industrial-grade nodes that do not need AEC-Q100 can drop in the ATSAMD21J17A-AU equivalent.
تجویز کردہ
Smart Metering and Energy Monitoring
Utility meters and sub-metering CTs require deterministic ADC sampling, accurate RTC timestamping, and tamper detection - all natively supported on the ATSAMD21J17A-AUT. The 12-bit ADC can sample current/voltage waveforms at the TCC-driven PWM frequency to compute real power, while the SERCOM block carries UART/I2C communication to the meter's display or wireless M-Bus radio. The 128 KB Flash is sufficient for DLMS/COSEM or wireless MBus application layers. The automotive-grade (-AUT) qualification also lets designers reuse the same firmware in industrial metering installations that demand extended thermal tolerance (-40C to +125C).
تجویز کردہ
USB Human Interface Devices (HID)
The ATSAMD21J17A-AUT integrates a USB 2.0 Full-Speed Device/Host controller with on-chip transceiver, eliminating the need for an external PHY and BOM cost. Designers can build USB HID keyboards, mice, game controllers, touch panels, or custom HID-class devices that communicate directly with a PC. The Cortex-M0+ at 48 MHz is more than capable of running USB stacks and HID report parsing concurrently. The 64-pin TQFP exposes 52 GPIO, giving plenty of headroom for key matrices, LED drivers, and rotary-encoder inputs. Arduino-compatible firmware (e.g., Arduino Zero) uses this exact chip, providing a large ecosystem of reference code.
تجویز کردہ
Industrial Sensor Hubs and IO-Link Masters
Factory-automation IO-Link masters aggregate multiple sensors and actuators onto a single fieldbus. The ATSAMD21J17A-AUT can act as a sensor-hub pre-processor: SERCOM ports handle SPI sensors and I2C ADCs, while the TCC timers generate PWM outputs for actuator control. The 12-bit ADC and integrated DAC allow local closed-loop control without an external signal chain. Its automotive-grade silicon revision gives designers confidence in long-term reliability under thermal cycling in cabinets. For designs that need more memory, the ATSAMD21J18A-AUT (256 KB Flash) is a pin-compatible upgrade.
تجویز کردہ
Wearable Consumer Devices
Wearables such as fitness bands, smart watches, and medical alert pendants benefit from the Cortex-M0+'s ultra-low deep-sleep current and the ATSAMD21J17A-AUT's small 10x10 mm TQFP footprint. The 6 SERCOM interfaces connect to BLE modules, OLED displays, IMUs, and heart-rate sensors concurrently. The on-chip PTC peripheral simplifies capacitive-touch button design on wearable enclosures. Designers can use the 32-bit RTC for accurate timekeeping in sleep mode, and the DAC drives audio cues without a separate audio CODEC for simple buzzer tones.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ATSAMD21J17A-AUT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ATSAMD21J17A-AU | ATSAMD21J18A-AUT | ATSAMD21J18A-AU | ATSAMD21J16B-AUT | ATSAMD21J16B-AU |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 256 KB | 256 KB | 64 KB | 64 KB |
| SRAM | 16 KB | 16 KB | 32 KB | 32 KB | 8 KB | 8 KB |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Operating Temperature | -40C to +85C (-AUT grade) | -40C to +85C (industrial) | -40C to +85C (-AUT grade) | -40C to +85C (industrial) | -40C to +85C (-AUT grade) | -40C to +85C (industrial) |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| SERCOM Count | 6 | 6 | 6 | 6 | 6 | 6 |
| USB | FS Device/Host | FS Device/Host | FS Device/Host | FS Device/Host | FS Device only | FS Device only |
| Automotive Qualification | Yes (-AUT) | No (industrial) | Yes (-AUT) | No (industrial) | Yes (-AUT) | No (industrial) |
اہم امتیازی خصوصیات
- Automotive-grade qualification in the same 64-TQFP footprint (بمقابلہATSAMD21J17A-AU)
- 256 KB Flash upgrade path with no PCB rework (بمقابلہATSAMD21J18A-AUT)
- Lower BOM cost with 64 KB Flash for cost-sensitive nodes (بمقابلہATSAMD21J16B-AUT)
- Six configurable SERCOM interfaces (بمقابلہATSAMD21G18A-AUT)
ڈیزائن نوٹس
The ATSAMD21J17A-AUT integrates a 1.2 V core LDO. Decouple VDDIN with a 100 nF X7R 0402 ceramic placed within 2 mm of the pin, plus a bulk 4.7 uF tantalum or ceramic. If the internal LDO is used (VDDIN > 2.0 V) the VDDCORE pin should be left as a capacitor-only node (typically 1 uF X7R) and NOT tied to VDDIN. Tying VDDCORE to VDDIN disables the regulator and is only recommended for very low-noise analog subsystems where switching ripple cannot be tolerated.
Keep the 64-TQFP exposed thermal pad (if present in your variant) soldered to a continuous ground pour to provide both thermal relief and a low-impedance ground return. Route the USB DP/DM differential pair as a 90 ohm impedance-matched pair on the top layer, length-matched within 150 mil, and keep them away from switching nodes. Place the 48 MHz external crystal (if used) within 5 mm of PA00/PA01 with a grounded guard ring to minimize EMI.
Do not assume all SAM D21 packages support USB Host - the J17A and J18A do, but the J16B silicon revision B only exposes USB Device. Also, the NMI pin (PA08) and SWD pins (PA30/PA31) cannot be reassigned to GPIO on a locked device; leave them accessible for production programming or include a 10-pin Cortex Debug connector footprint. Finally, configuring the DFLL on a fresh design without first calibrating the 32 kHz crystal reference will produce unreliable USB baud rates.
Estimated: at full 48 MHz CPU activity with all peripherals active, the ATSAMD21J17A-AUT in 64-TQFP dissipates approximately 60 mW typical. Junction-to-ambient thermal resistance for a 4-layer JEDEC test board is around 50 C/W, giving a self-heating rise of only ~3 C above ambient. Even with worst-case industrial environments (Tamb = +85 C), junction temperature stays below +90 C. Automotive designs at +125 C ambient should ensure 4-layer PCB with continuous ground pour under the TQFP exposed pad.
تعمیل کی معلومات
RoHS and REACH compliance per Microchip product page. AEC-Q100 qualified via -AUT suffix. Lead-free reflow compatible per JEDEC J-STD-020 MSL3.
