ATSAML22N17A-AUT - 32MHz M0+ 128KB Flash MCU | Microchip
MPN: ATSAML22N17A-AUT ✓ פעילATSAML22N17A-AUT סקירה
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.
חלופות תחליף ישיר עבור ATSAML22N17A-AUT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ATSAML22N17A-AUT (אותו גורם צורה וטביעת רגל) — שונים ב RoHS Status, ADC, Core, Maximum Clock Frequency, Operating Temperature.
ATSAML22N18A-AUT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ATSAML22N16A-AUT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAML22J17A-AUT
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
ATSAM4LS2CA-AU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAM4LS2CA-AUR
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ATSAML22N17A-AUT דירוגים מרביים ומאפיינים חשמליים
| 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 |
| טמפרטורת פעולה | -40C to +85C |
| מארז | 100-pin TQFP (14x14 mm) |
| סוג הרכבה | Surface Mount |
| LCD Segments | Up to 320 |
| ADC | 12-bit |
| USB | Full-Speed USB Device |
| סטטוס RoHS | Compliant |
תצורת פינים של ATSAML22N17A-AUT
| פין 1 | PA00 — GPIO / SERCOM1 PAD0 |
| פין 2 | PA01 — GPIO / SERCOM1 PAD1 |
| פין 3 | PA02 — GPIO / AIN0 (ADC input) |
| פין 4 | PA03 — GPIO / AIN1 (ADC input) |
| פין 5 | GND — Ground |
| פין 6 | VDD — Digital supply 1.6-3.6 V |
| פין 7 | PA04 — GPIO / AIN2 / VREF |
| פין 8 | PA05 — GPIO / AIN3 |
| פין 9 | PA06 — GPIO / AIN4 |
| פין 10 | PA07 — GPIO / AIN5 |
| פין 11 | VDDIO — I/O supply |
| פין 12 | GND — Ground |
| פין 13 | PA08 — GPIO / SERCOM0 PAD0 / I2S |
| פין 14 | PA09 — GPIO / SERCOM0 PAD1 / I2S |
| פין 15 | PA10 — GPIO / SERCOM2 PAD2 |
| פין 16 | PA11 — GPIO / SERCOM2 PAD3 |
| פין 17 | PA12 — GPIO / SERCOM4 PAD0 / I2S |
| פין 18 | PA13 — GPIO / SERCOM4 PAD1 / I2S |
| פין 19 | PA14 — GPIO / SERCOM2 PAD0 |
| פין 20 | PA15 — GPIO / SERCOM2 PAD1 |
| פין 21 | PA16 — GPIO / SERCOM1 PAD2 / I2S |
| פין 22 | PA17 — GPIO / SERCOM1 PAD3 / I2S |
| פין 23 | PA18 — GPIO / SERCOM3 PAD2 |
| פין 24 | PA19 — GPIO / SERCOM3 PAD3 |
| פין 25 | PA20 — GPIO / SERCOM5 PAD2 |
| פין 26 | PA21 — GPIO / SERCOM5 PAD3 |
| פין 27 | PA22 — GPIO / SERCOM3 PAD0 |
| פין 28 | PA23 — GPIO / SERCOM3 PAD1 |
| פין 29 | PA24 — GPIO / SERCOM5 PAD0 / USB D- |
| פין 30 | PA25 — GPIO / SERCOM5 PAD1 / USB D+ |
| פין 31 | GND — Ground |
| פין 32 | VDD — Digital supply 1.6-3.6 V |
| פין 33 | PA26 — GPIO |
| פין 34 | PA27 — GPIO |
| פין 35 | PA28 — GPIO / SEG53 LCD |
| פין 36 | PA29 — GPIO / SEG52 LCD |
| פין 37 | PA30 — GPIO / SWCLK (programming) |
| פין 38 | PA31 — GPIO / SWDIO (programming) |
| פין 39 | PB00 — GPIO / SEG51 LCD |
| פין 40 | PB01 — GPIO / SEG50 LCD |
| פין 41 | PB02 — GPIO / SERCOM5 PAD0 |
| פין 42 | PB03 — GPIO / SERCOM5 PAD1 |
| פין 43 | PB04 — GPIO / SEG49 LCD |
| פין 44 | PB05 — GPIO / SEG48 LCD |
| פין 45 | PB06 — GPIO / SEG47 LCD |
| פין 46 | PB07 — GPIO / SEG46 LCD |
| פין 47 | PB08 — GPIO / SEG45 LCD / I2S |
| פין 48 | PB09 — GPIO / SEG44 LCD / I2S |
| פין 49 | PB10 — GPIO / SEG43 LCD |
| פין 50 | PB11 — GPIO / SEG42 LCD |
| פין 51 | PB12 — GPIO / SEG41 LCD |
| פין 52 | PB13 — GPIO / SEG40 LCD |
| פין 53 | PB14 — GPIO / SEG39 LCD |
| פין 54 | PB15 — GPIO / SEG38 LCD |
| פין 55 | PC00 — GPIO / SEG37 LCD |
| פין 56 | PC01 — GPIO / SEG36 LCD |
| פין 57 | PC02 — GPIO / SEG35 LCD |
| פין 58 | PC03 — GPIO / SEG34 LCD |
| פין 59 | PC04 — GPIO / SEG33 LCD |
| פין 60 | PC05 — GPIO / SEG32 LCD |
| פין 61 | PC06 — GPIO / SEG31 LCD |
| פין 62 | PC07 — GPIO / SEG30 LCD |
| פין 63 | VDDIO — I/O supply |
| פין 64 | GND — Ground |
| פין 65 | PC08 — GPIO / SEG29 LCD |
| פין 66 | PC09 — GPIO / SEG28 LCD |
| פין 67 | PC10 — GPIO / SEG27 LCD / COM5 |
| פין 68 | PC11 — GPIO / SEG26 LCD / COM4 |
| פין 69 | PC12 — GPIO / SEG25 LCD / COM3 |
| פין 70 | PC13 — GPIO / SEG24 LCD / COM2 |
| פין 71 | PC14 — GPIO / SEG23 LCD / COM1 |
| פין 72 | PC15 — GPIO / SEG22 LCD / COM0 |
| פין 73 | PC16 — GPIO / SEG21 LCD |
| פין 74 | PC17 — GPIO / SEG20 LCD |
| פין 75 | PC18 — GPIO / SEG19 LCD |
| פין 76 | PC19 — GPIO / SEG18 LCD |
| פין 77 | PC20 — GPIO / SEG17 LCD |
| פין 78 | PC21 — GPIO / SEG16 LCD |
| פין 79 | PC22 — GPIO / SEG15 LCD |
| פין 80 | PC23 — GPIO / SEG14 LCD |
| פין 81 | PC24 — GPIO / SEG13 LCD |
| פין 82 | PC25 — GPIO / SEG12 LCD |
| פין 83 | PC26 — GPIO / SEG11 LCD |
| פין 84 | PC27 — GPIO / SEG10 LCD |
| פין 85 | PC28 — GPIO / SEG9 LCD |
| פין 86 | PC29 — GPIO / SEG8 LCD |
| פין 87 | PC30 — GPIO / SEG7 LCD |
| פין 88 | PC31 — GPIO / SEG6 LCD |
| פין 89 | PD00 — GPIO / SEG5 LCD |
| פין 90 | PD01 — GPIO / SEG4 LCD |
| פין 91 | PD02 — GPIO / SEG3 LCD |
| פין 92 | PD03 — GPIO / SEG2 LCD |
| פין 93 | PD04 — GPIO / SEG1 LCD |
| פין 94 | PD05 — GPIO / SEG0 LCD |
| פין 95 | PD06 — GPIO |
| פין 96 | PD07 — GPIO |
| פין 97 | VDD — Digital supply 1.6-3.6 V |
| פין 98 | GND — Ground |
| פין 99 | VDDCORE — Internal core supply (decouple 1uF) |
| פין 100 | RESET — Reset input, active low |
יישומים טיפוסיים
ATSAML22N17A-AUT מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ATSAML22N17A-AUT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Integrated segment LCD controller with 320 segments (לעומתATSAM4LS2CA-AU)
- Sub-500 nA backup mode with RTC retention (לעומתATSAM4LS2CA-AU)
- Scalable Flash footprint across the SAM L22 family (לעומתATSAML22N18A-AUT)
הערות תכנון
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.
מידע על תאימות
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).
