ATSAMD21G17A-AFT - 48MHz Cortex-M0+ MCU 128KB Flash | Microchip
MPN: ATSAMD21G17A-AFT ✓ فعالATSAMD21G17A-AFT جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals (timers, ADC, communication interfaces, GPIOs). It belongs to the embedded computing hierarchy: microcontroller -> embedded processor -> semiconductor device -> integrated circuit. The Cortex-M0+ is ARM's smallest, most energy-efficient 32-bit core, designed for deterministic real-time control and ultra-low-power battery applications.
Key features include 6 SERCOM (configurable serial interfaces, each supporting I2C/SPI/USART), a 12-bit ADC with up to 350 ksps sampling rate, two analog comparators, a 24-channel Event System for inter-peripheral signalling, and a 16-bit timer/counter array. It also provides a full-speed USB 2.0 Device/Embedded Host with on-chip PHY eliminating external transceiver cost.
The 'G' pin-count tier (48 pins) integrates 38 programmable I/O lines with 5V tolerant inputs, suiting medium-density designs. The device supports Sleep, Idle, Standby and Backup sleepwalking modes with wake-on-interrupt capability, drawing under 1 µA in Backup mode with RTC retention - critical for battery-powered IoT endpoints.
Typical applications include USB HID peripherals, smart home sensor hubs, industrial sensor nodes, motor control subsystems, and low-power wearables. The on-chip USB, ample RAM, and FreeRTOS/Microchip Harmony support accelerate mid-volume product development.
When designing, allocate at least a 4-layer PCB with continuous ground beneath the QFN/TQFP thermal pad for best EMI; the Cortex-M0+ requires no external crystal for USB when using the 32 kHz PLL lock mode. Always enable the Watchdog Timer (WDT) in safety-critical applications.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل ATSAMD21G17A-AFT — 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 ATSAMD21G17A-AFT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Operating Temperature, Package, USB, ADC, Core Architecture.
ATSAMD21G17A-AF
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21G17D-AFT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21G18A-AFT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATSAMD21G17A-AFT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | ARM Cortex-M0+ 32-bit |
| CPU Frequency | 48 MHz |
| Program Memory (Flash) | 128 KB |
| SRAM | 16 KB |
| Operating Voltage Range | 1.6 V to 3.6 V |
| پیکیج | 48-TQFP (7x7 mm) |
| پن کی تعداد | 48 |
| GPIO Count | 38 |
| USB | USB 2.0 Full-Speed, Device/Host, on-chip PHY |
| SERCOM | 6 (configurable: I2C/SPI/USART) |
| ADC | 12-bit, up to 350 ksps |
| Analog Comparators | 2 |
| Timers/Counters | 16-bit TCC, TC, RTC |
| آپریٹنگ درجہ حرارت | -40C to +125C (industrial grade) |
| DMA Channels | 16 |
| RoHS اسٹیٹس | Compliant |
ATSAMD21G17A-AFT پن کنفیگریشن
| پن 1 | PA00 — General I/O / SERCOM1 PAD0 |
| پن 2 | PA01 — General I/O / SERCOM1 PAD1 |
| پن 3 | PA02 — AIN0 (Analog) / DAC output |
| پن 4 | PA03 — AIN1 (Analog) / VREF-A |
| پن 5 | PA04 — AIN2 (Analog) |
| پن 6 | PA05 — AIN3 (Analog) |
| پن 7 | VDD — Digital supply voltage |
| پن 8 | VSS — Digital ground |
| پن 9 | VDDIO — I/O supply voltage |
| پن 10 | PA06 — AIN4 / SERCOM0 PAD2 |
| پن 11 | PA07 — AIN5 / SERCOM0 PAD3 |
| پن 12 | PA08 — AIN6 / SERCOM2 PAD0 |
| پن 13 | PA09 — AIN7 / SERCOM2 PAD1 |
| پن 14 | PA10 — AIN8 / SERCOM2 PAD2 |
| پن 15 | PA11 — AIN9 / SERCOM2 PAD3 / USB D- |
| پن 16 | PA12 — AIN10 / USB D+ |
| پن 17 | PA13 — AIN11 |
| پن 18 | PA14 — General I/O / SERCOM4 PAD2 |
| پن 19 | PA15 — General I/O / SERCOM4 PAD3 |
| پن 20 | PA16 — SERCOM1 PAD0 / I2S SD |
| پن 21 | PA17 — SERCOM1 PAD1 / I2S FS |
| پن 22 | PA18 — SERCOM1 PAD2 / I2S SCK |
| پن 23 | PA19 — SERCOM1 PAD3 |
| پن 24 | PA20 — SERCOM5 PAD2 |
| پن 25 | PA21 — SERCOM5 PAD3 |
| پن 26 | PA22 — SERCOM3 PAD0 |
| پن 27 | PA23 — SERCOM3 PAD1 |
| پن 28 | PA24 — SERCOM3 PAD2 / USB ID |
| پن 29 | PA25 — SERCOM3 PAD3 / USB VBUS Sense |
| پن 30 | PB00 — SERCOM5 PAD0 |
| پن 31 | PB01 — SERCOM5 PAD1 |
| پن 32 | PB02 — SERCOM5 PAD2 / ADC AIN14 |
| پن 33 | PB03 — SERCOM5 PAD3 / ADC AIN15 |
| پن 34 | PB04 — SERCOM4 PAD0 |
| پن 35 | PB05 — SERCOM4 PAD1 |
| پن 36 | PB06 — SERCOM4 PAD2 |
| پن 37 | PB07 — SERCOM4 PAD3 |
| پن 38 | PB08 — SERCOM4 PAD0 / ADC AIN2 |
| پن 39 | PB09 — SERCOM4 PAD1 / ADC AIN3 |
| پن 40 | PB10 — SERCOM4 PAD2 |
| پن 41 | PB11 — SERCOM4 PAD3 |
| پن 42 | PB12 — SERCOM0 PAD0 |
| پن 43 | PB13 — SERCOM0 PAD1 |
| پن 44 | PB14 — SERCOM0 PAD2 |
| پن 45 | PB15 — SERCOM0 PAD3 |
| پن 46 | RESETn — Active-low reset input |
| پن 47 | VDDANA — Analog supply |
| پن 48 | GND — Analog/Digital ground |
عام استعمالات
ATSAMD21G17A-AFT کے لیے موزوں ہے 6 ایپلیکیشنs: USB HID Peripherals, Smart Home Sensor Hubs, Industrial Sensor Nodes (4-20 mA / IO-Link), Low-Power Wearable Devices, Motor Control Subsystems, Consumer Metering (Gas / Water / Electric).
USB HID Peripherals
The ATSAMD21G17A-AFT is ideal for USB HID peripherals such as keyboards, mice, game controllers and custom input devices. Its integrated USB 2.0 Full-Speed Device with on-chip PHY removes the need for an external transceiver, reducing BOM cost and PCB area; the 48 MHz Cortex-M0+ easily handles polling rates up to 1000 Hz; 16 KB SRAM supports HID report buffers and protocol stacks like LUFA or TinyUSB. Engineers can leverage Microchip's ASF USB stack to add vendor-specific HID descriptors with minimal firmware effort.
تجویز کردہ
Smart Home Sensor Hubs
The ATSAMD21G17A-AFT suits battery-powered smart-home sensor hubs for environmental monitoring. Its 1.6-3.6 V operating range supports direct 2x AA or CR2032 cell input; BACKUP sleep mode at under 1 µA with RTC retention lets nodes live 5-10 years on a single cell; six SERCOM interfaces allow simultaneous I2C sensors (BME280, SHT31), SPI radios (LoRa), and UART debug; wake-on-GPIO lets PIR sensors trigger measurement bursts. Microchip's MQTT-over-Wi-Fi reference designs use this exact part as the edge controller.
تجویز کردہ
Industrial Sensor Nodes (4-20 mA / IO-Link)
The ATSAMD21G17A-AFT operates reliably across -40 °C to +125 °C, making it well-suited to industrial sensor nodes in IO-Link or 4-20 mA loops. Its 12-bit ADC sampling at 350 ksps captures pressure, flow, and level signals with adequate resolution for process control; the Cortex-M0+ executes deterministic control loops in under 1 µs; SERCOM interfaces connect to industrial transceivers like the MAX14819; on-chip Brown-Out Detector (BOD33) provides fail-safe behavior on noisy 24V rails.
تجویز کردہ
Low-Power Wearable Devices
The ATSAMD21G17A-AFT enables fitness bands, smart watches and medical wearables with multi-week battery life. Backup current under 1 µA with RTC retention is unmatched in this class; the 2.4 µs wake-up from BACKUP to RUN lets biometric sensors react immediately to a tap event; 16 KB SRAM caches heart-rate samples before BLE transmission; 38 GPIOs drive small AMOLED displays and haptic motors. Microchip's ASF Sleepwalking framework further reduces idle active current to 200 µA average.
تجویز کردہ
Motor Control Subsystems
The ATSAMD21G17A-AFT can drive small brushless DC (BLDC) and stepper motors in appliance and robotic subsystems. The TCC timer can generate complementary PWM up to 48 MHz with dead-band insertion and hardware fault shutdown via the Event System; the 6-step or FOC control loops run in real time at the full CPU clock; 38 GPIOs handle Hall-sensor input and half-bridge gate-driver enable lines. Microchip's AN2017 application note details complete BLDC firmware examples.
تجویز کردہ
Consumer Metering (Gas / Water / Electric)
The ATSAMD21G17A-AFT is suitable for residential gas, water, and electricity meters requiring calibration accuracy and long battery life. Its 16-bit sigma-delta-capable Timer/Counter can drive a precision energy-measurement front end; the integrated RTC supports time-of-use billing; BACKUP sleep mode with RTC retention enables 10+ year coin-cell operation. The Cortex-M0+ executes DLMS/COSEM, IEC 62056-21, or Modbus stacks for smart-meter communication while running the metrology core via interrupts.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ATSAMD21G17A-AFT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ATSAMD21G17A-AF | ATSAMD21G17D-AFT | ATSAMD21G18A-AFT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Core | ARM Cortex-M0+ 32-bit | ARM Cortex-M0+ 32-bit | ARM Cortex-M0+ 32-bit | ARM Cortex-M0+ 32-bit |
| CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 128 KB | 128 KB | 128 KB | 256 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 32 KB |
| USB | Yes (Device + Host) | Yes (Device + Host) | Yes (Device + Host) | Yes (Device + Host) |
| Temperature Grade | -40C to +125C (Industrial) | -40C to +85C (Commercial) | -40C to +125C (Industrial) | -40C to +125C (Industrial) |
اہم امتیازی خصوصیات
- Industrial temperature grade with tape & reel packaging (بمقابلہATSAMD21G17A-AF)
- Revision A silicon with widest software library support (بمقابلہATSAMD21G17D-AFT)
- Higher memory density upgrade path (بمقابلہATSAMD21G18A-AFT)
ڈیزائن نوٹس
Estimated: at 48 MHz Active mode, VDD = 3.3 V, the ATSAMD21G17A-AFT draws 8-10 mA typical. In BACKUP sleep with RTC retention, current drops below 1 µA per datasheet. For coin-cell designs, ensure the application spends less than 0.1% of operating time in active state to achieve 10-year battery life.
Place decoupling capacitors (100 nF ceramic + 4.7 µF bulk) within 5 mm of VDD and VDDANA pins. Keep analog and digital ground separated on the top layer, joining only at the part's GND pin. USB D+/D- traces should be 90 ohm differential, length-matched within 1 mm.
Do not leave unused SERCOM pads floating - configure them as GPIO outputs or input with enable to avoid parasitic current leakage. When using the on-chip USB, VBUS pin requires a 5V-tolerant regulator or network divider if connected directly to a 5 V host. The 32 kHz crystal must be low-ESR (<80 ohm) to start-up reliably in BACKUP mode.
تعمیل کی معلومات
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - select SAM DA1 or SAM D21D-AFT automotive variants for AEC-Q100. Lead-free and halogen-free per Microchip material declaration.
