ATSAML22N17A-AUT - 32MHz M0+ 128KB Flash MCU | Microchip
MPN: ATSAML22N17A-AUT ✓ نشطATSAML22N17A-AUT نظرة عامة
An ultra-low-power microcontroller (MCU) is a class of embedded controller that integrates a CPU core, memory, and peripherals while optimizing every operating mode for minimum energy consumption. Within the semiconductor taxonomy, an MCU belongs to microcontrollers -> integrated circuits -> semiconductors. The SAM L22 family specifically targets battery-powered metering, medical, and IoT applications where the segment LCD driver eliminates the cost and current drain of an external display controller.
Key features of the ATSAML22N17A-AUT include 39 uA/MHz active current running CoreMark, a deep-sleep backup mode drawing only 490 nA with RTC retention, a 12-bit ADC, multiple SERCOM interfaces, a full-speed USB device, and a hardware segmented LCD controller with integrated charge pump. The device also provides a 32 kHz RTC, multiple timers, and an event system for low-power peripheral signaling without CPU intervention.
The architecture combines an ARM Cortex-M0+ core with single-cycle I/O access, a dedicated LCD segment driver peripheral, and a sophisticated power management unit featuring eight distinct sleep modes. The integrated charge pump allows direct biasing of 3V or 5V LCD glass from a single Li-ion cell, simplifying meter and appliance front-panel designs.
Typical applications include electricity meters, water/gas meters with LCD readouts, medical monitoring devices, industrial sensor nodes, and battery-powered IoT terminals. The combination of segment LCD, USB, and sub-microamp backup current makes the part especially well-suited to portable metering and wearable health devices.
When designing with this part, ensure that decoupling capacitance is placed within 5 mm of each VDD pin pair and that the segment LCD bias network follows the reference schematic in the datasheet. The AUT suffix indicates tape-and-reel packaging for high-volume assembly.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single decision-ready view of the ATSAML22N17A-AUT and its pin-compatible peers.
بدائل مباشرة لـ ATSAML22N17A-AUT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع ATSAML22N17A-AUT (نفس عامل الشكل والبصمة) — يختلف في RoHS Status, ADC, Core, Maximum Clock Frequency, Operating Temperature.
ATSAML22N18A-AUT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ATSAML22N16A-AUT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATSAML22J17A-AUT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
ATSAM4LS2CA-AU
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATSAM4LS2CA-AUR
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ATSAML22N17A-AUT الحدود القصوى والخصائص الكهربائية
| Core | ARM Cortex-M0+ 32-bit |
| Max CPU Speed | 32 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Supply Voltage (VDD) | 1.6 V to 3.6 V |
| Active Current (CoreMark) | 39 uA/MHz |
| Backup Mode Current (RTC retained) | 490 nA |
| درجة حرارة التشغيل | -40C to +85C |
| العلبة | 100-pin TQFP (14x14 mm) |
| نوع التركيب | Surface Mount |
| LCD Segments | Up to 320 |
| ADC | 12-bit |
| USB | Full-Speed USB Device |
| حالة RoHS | Compliant |
تكوين أطراف ATSAML22N17A-AUT
| دبوس 1 | PA00 — GPIO / SERCOM1 PAD0 |
| دبوس 2 | PA01 — GPIO / SERCOM1 PAD1 |
| دبوس 3 | PA02 — GPIO / AIN0 (ADC input) |
| دبوس 4 | PA03 — GPIO / AIN1 (ADC input) |
| دبوس 5 | GND — Ground |
| دبوس 6 | VDD — Digital supply 1.6-3.6 V |
| دبوس 7 | PA04 — GPIO / AIN2 / VREF |
| دبوس 8 | PA05 — GPIO / AIN3 |
| دبوس 9 | PA06 — GPIO / AIN4 |
| دبوس 10 | PA07 — GPIO / AIN5 |
| دبوس 11 | VDDIO — I/O supply |
| دبوس 12 | GND — Ground |
| دبوس 13 | PA08 — GPIO / SERCOM0 PAD0 / I2S |
| دبوس 14 | PA09 — GPIO / SERCOM0 PAD1 / I2S |
| دبوس 15 | PA10 — GPIO / SERCOM2 PAD2 |
| دبوس 16 | PA11 — GPIO / SERCOM2 PAD3 |
| دبوس 17 | PA12 — GPIO / SERCOM4 PAD0 / I2S |
| دبوس 18 | PA13 — GPIO / SERCOM4 PAD1 / I2S |
| دبوس 19 | PA14 — GPIO / SERCOM2 PAD0 |
| دبوس 20 | PA15 — GPIO / SERCOM2 PAD1 |
| دبوس 21 | PA16 — GPIO / SERCOM1 PAD2 / I2S |
| دبوس 22 | PA17 — GPIO / SERCOM1 PAD3 / I2S |
| دبوس 23 | PA18 — GPIO / SERCOM3 PAD2 |
| دبوس 24 | PA19 — GPIO / SERCOM3 PAD3 |
| دبوس 25 | PA20 — GPIO / SERCOM5 PAD2 |
| دبوس 26 | PA21 — GPIO / SERCOM5 PAD3 |
| دبوس 27 | PA22 — GPIO / SERCOM3 PAD0 |
| دبوس 28 | PA23 — GPIO / SERCOM3 PAD1 |
| دبوس 29 | PA24 — GPIO / SERCOM5 PAD0 / USB D- |
| دبوس 30 | PA25 — GPIO / SERCOM5 PAD1 / USB D+ |
| دبوس 31 | GND — Ground |
| دبوس 32 | VDD — Digital supply 1.6-3.6 V |
| دبوس 33 | PA26 — GPIO |
| دبوس 34 | PA27 — GPIO |
| دبوس 35 | PA28 — GPIO / SEG53 LCD |
| دبوس 36 | PA29 — GPIO / SEG52 LCD |
| دبوس 37 | PA30 — GPIO / SWCLK (programming) |
| دبوس 38 | PA31 — GPIO / SWDIO (programming) |
| دبوس 39 | PB00 — GPIO / SEG51 LCD |
| دبوس 40 | PB01 — GPIO / SEG50 LCD |
| دبوس 41 | PB02 — GPIO / SERCOM5 PAD0 |
| دبوس 42 | PB03 — GPIO / SERCOM5 PAD1 |
| دبوس 43 | PB04 — GPIO / SEG49 LCD |
| دبوس 44 | PB05 — GPIO / SEG48 LCD |
| دبوس 45 | PB06 — GPIO / SEG47 LCD |
| دبوس 46 | PB07 — GPIO / SEG46 LCD |
| دبوس 47 | PB08 — GPIO / SEG45 LCD / I2S |
| دبوس 48 | PB09 — GPIO / SEG44 LCD / I2S |
| دبوس 49 | PB10 — GPIO / SEG43 LCD |
| دبوس 50 | PB11 — GPIO / SEG42 LCD |
| دبوس 51 | PB12 — GPIO / SEG41 LCD |
| دبوس 52 | PB13 — GPIO / SEG40 LCD |
| دبوس 53 | PB14 — GPIO / SEG39 LCD |
| دبوس 54 | PB15 — GPIO / SEG38 LCD |
| دبوس 55 | PC00 — GPIO / SEG37 LCD |
| دبوس 56 | PC01 — GPIO / SEG36 LCD |
| دبوس 57 | PC02 — GPIO / SEG35 LCD |
| دبوس 58 | PC03 — GPIO / SEG34 LCD |
| دبوس 59 | PC04 — GPIO / SEG33 LCD |
| دبوس 60 | PC05 — GPIO / SEG32 LCD |
| دبوس 61 | PC06 — GPIO / SEG31 LCD |
| دبوس 62 | PC07 — GPIO / SEG30 LCD |
| دبوس 63 | VDDIO — I/O supply |
| دبوس 64 | GND — Ground |
| دبوس 65 | PC08 — GPIO / SEG29 LCD |
| دبوس 66 | PC09 — GPIO / SEG28 LCD |
| دبوس 67 | PC10 — GPIO / SEG27 LCD / COM5 |
| دبوس 68 | PC11 — GPIO / SEG26 LCD / COM4 |
| دبوس 69 | PC12 — GPIO / SEG25 LCD / COM3 |
| دبوس 70 | PC13 — GPIO / SEG24 LCD / COM2 |
| دبوس 71 | PC14 — GPIO / SEG23 LCD / COM1 |
| دبوس 72 | PC15 — GPIO / SEG22 LCD / COM0 |
| دبوس 73 | PC16 — GPIO / SEG21 LCD |
| دبوس 74 | PC17 — GPIO / SEG20 LCD |
| دبوس 75 | PC18 — GPIO / SEG19 LCD |
| دبوس 76 | PC19 — GPIO / SEG18 LCD |
| دبوس 77 | PC20 — GPIO / SEG17 LCD |
| دبوس 78 | PC21 — GPIO / SEG16 LCD |
| دبوس 79 | PC22 — GPIO / SEG15 LCD |
| دبوس 80 | PC23 — GPIO / SEG14 LCD |
| دبوس 81 | PC24 — GPIO / SEG13 LCD |
| دبوس 82 | PC25 — GPIO / SEG12 LCD |
| دبوس 83 | PC26 — GPIO / SEG11 LCD |
| دبوس 84 | PC27 — GPIO / SEG10 LCD |
| دبوس 85 | PC28 — GPIO / SEG9 LCD |
| دبوس 86 | PC29 — GPIO / SEG8 LCD |
| دبوس 87 | PC30 — GPIO / SEG7 LCD |
| دبوس 88 | PC31 — GPIO / SEG6 LCD |
| دبوس 89 | PD00 — GPIO / SEG5 LCD |
| دبوس 90 | PD01 — GPIO / SEG4 LCD |
| دبوس 91 | PD02 — GPIO / SEG3 LCD |
| دبوس 92 | PD03 — GPIO / SEG2 LCD |
| دبوس 93 | PD04 — GPIO / SEG1 LCD |
| دبوس 94 | PD05 — GPIO / SEG0 LCD |
| دبوس 95 | PD06 — GPIO |
| دبوس 96 | PD07 — GPIO |
| دبوس 97 | VDD — Digital supply 1.6-3.6 V |
| دبوس 98 | GND — Ground |
| دبوس 99 | VDDCORE — Internal core supply (decouple 1uF) |
| دبوس 100 | RESET — Reset input, active low |
التطبيقات النموذجية
ATSAML22N17A-AUT مناسب لـ 6 التطبيقs: Electricity Meter with Segment LCD, Water and Gas Meter with LCD Display, Battery-Powered Medical Monitor, Industrial Sensor Node with USB Diagnostics, Wearable Health and Fitness Device, IoT Edge Node with LCD Status Display.
Electricity Meter with Segment LCD
The ATSAML22N17A-AUT is purpose-built for single-phase and three-phase electricity meters where the integrated segment LCD controller drives up to 320 segments for kWh, voltage, current, and tariff readouts. With 39 uA/MHz active current and 490 nA backup, it sustains 10+ years of battery or capacitor-backed operation. The Cortex-M0+ core runs metering algorithms and the integrated 12-bit ADC samples voltage and current channels. The same 100-pin TQFP footprint supports family migration to ATSAML22N18A-AUT for added Flash headroom.
موصى به
Water and Gas Meter with LCD Display
The ATSAML22N17A-AUT drives a 4- or 8-compartment mechanical register through its segment LCD peripheral and counts pulses from a reed switch or Hall sensor via a GPIO interrupt. The 490 nA backup mode with RTC retains time and consumption data during primary cell replacement. 128 KB Flash fits wireless M-Bus or LoRaWAN stacks when paired with an external transceiver. The 100-pin TQFP provides ample GPIO for tamper switches, optical interfaces, and valve control outputs.
موصى به
Battery-Powered Medical Monitor
The ATSAML22N17A-AUT suits portable medical devices such as glucose meters, pulse oximeters, and body temperature monitors where battery life and a clear numeric LCD display are essential. Its 12-bit ADC captures sensor data, the segment LCD shows measurement results without a separate driver IC, and the 1.6-3.6 V range accepts direct Li-ion or 2x AA cells. Hardware crypto on the J-variant or AES on the L22J enables secure patient data storage where required.
موصى به
Industrial Sensor Node with USB Diagnostics
The ATSAML22N17A-AUT integrates a full-speed USB device that engineers can use for firmware update and diagnostic logging without an external bridge IC. In industrial 4-20 mA sensor heads, the 12-bit ADC and multiple SERCOM channels (I2C/SPI/UART) connect to MEMS sensors and isolated transceivers. The wide -40C to +85C operating range supports factory-floor deployment, and the 100-pin TQFP provides a rugged leaded package for harsh environments.
موصى به
Wearable Health and Fitness Device
Wearable step counters, heart-rate monitors, and thermometer watches leverage the ATSAML22N17A-AUT for sub-microamp standby between sensor samples and an integrated segment LCD for time and metric display. The 32 MHz Cortex-M0+ executes BLE stack stubs and HRM algorithms within 39 uA/MHz, while 490 nA backup mode keeps the RTC alive overnight. The 100-pin TQFP package suits small form-factor wearable PCBs where exposed lead reliability matters.
موصى به
IoT Edge Node with LCD Status Display
IoT edge devices such as smart thermostats, room controllers, and HVAC user interfaces benefit from the ATSAML22N17A-AUT's segment LCD up to 320 segments and multiple SERCOM channels for sensor and radio connectivity. The Cortex-M0+ runs FreeRTOS or ASF firmware, the 128 KB Flash holds TCP/IP and MQTT stacks, and the 1.6-3.6 V range accepts 3.3 V system rails directly. The 100-pin TQFP is convenient for hand-soldered prototypes and production assemblies alike.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ ATSAML22N17A-AUT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | ATSAML22N18A-AUT | ATSAML22N16A-AUT | ATSAML22J17A-AUT | ATSAM4LS2CA-AU |
|---|---|---|---|---|---|
| Package | TQFP-100 (14x14) | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M4F |
| Max Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 48 MHz |
| Flash | 128 KB | 256 KB | 64 KB | 128 KB | 128 KB |
| SRAM | 16 KB | 32 KB | 8 KB | 16 KB | 32 KB |
| LCD Segments | 320 | 320 | 320 | 320 | None |
| Active Current | 39 uA/MHz | 39 uA/MHz | 39 uA/MHz | 39 uA/MHz | 90 uA/MHz |
| Backup Current | 490 nA | 490 nA | 490 nA | 490 nA | 1500 nA |
أبرز الفروقات
- Integrated segment LCD controller with 320 segments (مقابلATSAM4LS2CA-AU)
- Sub-500 nA backup mode with RTC retention (مقابلATSAM4LS2CA-AU)
- Scalable Flash footprint across the SAM L22 family (مقابلATSAML22N18A-AUT)
ملاحظات التصميم
Place a 1uF X7R ceramic decoupling capacitor within 5 mm of the VDDCORE pin (pin 99) and a 100 nF X7R within 5 mm of each VDD/VDDIO pair (pins 6, 11, 32, 63, 97). The VDDCORE pin is internally regulated and must not be driven externally. Use a star-ground topology connecting all GND pins to a single copper pour under the TQFP thermal pad to avoid ground bounce during LCD charge-pump switching.
The segment LCD charge pump uses external VLCD and HPM pins; consult the reference schematic in the SAM L22 datasheet section 'LCD Controller'. Using incorrect reservoir capacitor values (< 1uF) on HPM causes ghosting segments. Do not enable the LCD controller before configuring the GPIO mux for SLCD_COM and SLCD_SEG functions, otherwise the segment pins default to GPIO and can drive the LCD glass incorrectly.
Route the USB DP and DM pair (PA24, PA25) as a 90-ohm differential pair with length matching within 2 mm. Place the 27 ohm series damping resistors close to the MCU side and keep the pair away from switching power traces. For PCB layout, fan out the 100-pin TQFP on both sides with 0.2 mm trace width minimum to reach inner escape layers; the 14x14 mm package offers generous routing channels for 4-layer stack-ups.
معلومات الامتثال
RoHS and REACH compliance per Microchip product page. Industrial temperature grade -40C to +85C; not AEC-Q100 qualified (use ATSAML22N17A-AUT automotive variant for vehicle applications if available).
