ATSAML22G16A-AUT - SAM L22G 32MHz Cortex-M0+ 64KB MCU | Microchip
Teilenummer: ATSAML22G16A-AUT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.45 | $4,45 |
| 10 | $4.05 | $40,50 |
| 100 | $3.62 | $362,00 |
| 500 | $3.27 | $1.635,00 |
| 1.000 | $2.96 | $2.960,00 |
ATSAML22G16A-AUT Übersicht
An ultra-low-power microcontroller (MCU) is a class of embedded processor that combines a CPU core, non-volatile memory (Flash), volatile memory (SRAM), and a rich set of peripherals into a single IC, optimized to minimize energy consumption across active, idle, and sleep states. The Cortex-M0+ is ARM's smallest and most energy-efficient application processor core, and the SAM L22 family extends this efficiency with Microchip's proprietary power-management techniques. Within the broader taxonomy, this device is a 32-bit microcontroller, a sub-category of microcontrollers and embedded processors, falling under the Integrated Circuits > Microcontrollers category.
Key features include a Cortex-M0+ core running up to 32MHz, 64KB Flash for application code, 8KB SRAM for runtime data, an integrated 32kHz RTC and Segment LCD controller, and a wide operating voltage range of 1.62V to 3.63V. The device operates at 39 uA/MHz in active mode running CoreMark, and drops to as low as 490nA in ultra-low-power backup mode with RTC retention. It supports multiple low-power modes including Sleep, Standby, Backup, and Off, and provides a Segment LCD driver for glass displays up to 8 common segments.
The SAM L22 architecture combines an efficient ARM Cortex-M0+ pipeline with Microchip's Peripheral Event System and Sleepwalking peripherals, allowing the CPU to remain asleep while DMA-driven events handle sensor sampling and GPIO wakeups. An integrated 32kHz oscillator, full-speed USB 2.0 device, and Segment LCD controller further reduce external component count. The 48-pin TQFP package exposes multiple SERCOM, ADC, and touch-capable I/O lines, supporting a wide range of mixed-signal interfaces.
Typical applications include battery-powered sensor nodes, wearable health and fitness devices, smart thermostats and home automation, industrial IoT edge nodes, metering and instrumentation displays with built-in LCD support, and ultra-low-power wireless sensor end-nodes. The integrated Segment LCD controller makes it particularly well suited to products with a user-facing glass display that must run for years on a single coin cell.
When designing with this device, ensure that the supply rail is decoupled with at least one 100nF ceramic capacitor placed within a few millimetres of the VDD pins, and that the Segment LCD bias network is sized per the display manufacturer's recommended glass capacitance. Designers should evaluate the trade-off between using the integrated 32kHz crystal oscillator versus an external 32.768kHz crystal when RTC accuracy is critical to the application.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, organized to support component selection, PCB layout, and supply-chain risk analysis for engineers working on low-power embedded designs.
Drop-in-Alternativen für ATSAML22G16A-AUT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATSAML22G16A-AUT (gleiche Bauform und Footprint) – abweichend in Package, ADC, Operating Temperature, RoHS Status, USB.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATSAML22G16A-MUT
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$2.45 / Stück
Datenblatt ansehen →ATSAML22G17A-AUT
✅ Drop-In✓ Auf Lager
$3.35 / Stück
Datenblatt ansehen →ATSAML22N16A-AUT
✅ Drop-In✓ Auf Lager
$2.85 / Stück
Datenblatt ansehen →ATSAML21G16B-ANT
✅ Drop-In✓ Auf Lager
$2.78 / Stück
Datenblatt ansehen →ATSAML11E16A-AUTKPH
✅ Drop-In✓ Auf Lager
$3.1 / Stück
Datenblatt ansehen →ATSAML22G16A-AUT Grenzwerte & elektrische Eigenschaften
| Core Architecture | ARM Cortex-M0+ |
| Product Family | SAM L22G (Ultra-Low-Power) |
| CPU Bit Width | 32-bit |
| Maximum CPU Clock | 32 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| Data Memory (SRAM) | 8 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Active Mode Current (CoreMark) | 39 uA/MHz |
| Backup Mode Current (RTC retention) | 490 nA |
| Betriebstemperaturbereich | -40 C to +85 C |
| Gehäuse | 48-pin TQFP (7x7 mm) |
| Montageart | Surface Mount (Tape & Reel) |
| Integrated LCD Controller | Yes (Segment LCD, up to 8 common) |
| USB Interface | Full-Speed USB 2.0 Device |
| RoHS-Status | ROHS3 Compliant |
| MSL-Level | 3 (per JEDEC J-STD-020) |
ATSAML22G16A-AUT Pin-Konfiguration
| Pin 1 | PA00 — GPIO / XIN32 (external 32.768 kHz crystal input) |
| Pin 2 | PA01 — GPIO / XOUT32 (external 32.768 kHz crystal output) |
| Pin 3 | PA02 — GPIO / AIN0 (analog input) |
| Pin 4 | PA03 — GPIO / AIN1 / VREFA (analog reference) |
| Pin 5 | GND — Ground |
| Pin 6 | VDDIO — I/O supply voltage |
| Pin 7 | VDDANA — Analog supply voltage |
| Pin 8 | PA04 — GPIO / AIN2 |
| Pin 9 | PA05 — GPIO / AIN3 |
| Pin 10 | PA06 — GPIO / AIN4 |
| Pin 11 | PA07 — GPIO / AIN5 |
| Pin 12 | PA08 — GPIO / AIN6 |
| Pin 13 | PA09 — GPIO / AIN7 / SERCOM pad |
| Pin 14 | PA10 — GPIO / AIN8 / SERCOM pad |
| Pin 15 | PA11 — GPIO / AIN9 / SERCOM pad |
| Pin 16 | PA12 — GPIO / SERCOM pad |
| Pin 17 | PA13 — GPIO / SERCOM pad |
| Pin 18 | PA14 — GPIO / SERCOM pad |
| Pin 19 | PA15 — GPIO / SERCOM pad |
| Pin 20 | PA16 — GPIO / SERCOM pad |
| Pin 21 | PA17 — GPIO / SERCOM pad |
| Pin 22 | PA18 — GPIO / SERCOM pad |
| Pin 23 | PA19 — GPIO / SERCOM pad |
| Pin 24 | PA20 — GPIO / SERCOM pad |
| Pin 25 | PA21 — GPIO / SERCOM pad |
| Pin 26 | PA22 — GPIO / SERCOM pad |
| Pin 27 | PA23 — GPIO / SERCOM pad |
| Pin 28 | PA24 — GPIO / USB_DM |
| Pin 29 | PA25 — GPIO / USB_DP |
| Pin 30 | GND — Ground |
| Pin 31 | VDDCORE — Internal core voltage regulator output (decoupling cap) |
| Pin 32 | VDDIO — I/O supply voltage |
| Pin 33 | PA27 — GPIO |
| Pin 34 | PA28 — GPIO / RESET (default) |
| Pin 35 | PA29 — GPIO / SWDIO |
| Pin 36 | PA30 — GPIO / SWCLK |
| Pin 37 | PA31 — GPIO / Bootloader entry |
| Pin 38 | PB00 — GPIO / LCD segment |
| Pin 39 | PB01 — GPIO / LCD segment |
| Pin 40 | PB02 — GPIO / LCD segment |
| Pin 41 | PB03 — GPIO / LCD segment |
| Pin 42 | PB04 — GPIO / LCD segment |
| Pin 43 | PB05 — GPIO / LCD segment |
| Pin 44 | PB06 — GPIO / LCD segment |
| Pin 45 | PB07 — GPIO / LCD segment |
| Pin 46 | PB08 — GPIO / LCD segment |
| Pin 47 | PB09 — GPIO / LCD segment |
| Pin 48 | GND — Ground (thermal pad connected to GND) |
Typische Anwendungen
ATSAML22G16A-AUT ist geeignet für 7 Anwendungs: Battery-Powered Sensor Node, Wearable Health and Fitness Device, Smart Thermostat / Home Automation, Utility Meter with Glass Display, Industrial IoT Edge Node, Portable Medical Monitoring Device, Smart Remote Control with E-Ink / LCD Display.
Battery-Powered Sensor Node
The ATSAML22G16A-AUT fits wireless and wired sensor nodes that must operate for years on a primary battery. Its 39 uA/MHz active current at 32 MHz and 490 nA backup-mode current with RTC retention allow duty-cycled wake-measure-transmit-sleep architectures where the MCU spends >99% of time in deep sleep. The Cortex-M0+ core executes small sensor-acquisition routines in single-digit milliseconds before returning to sleep, and the integrated Peripheral Event System with SleepWalking peripherals can wake the CPU only when a threshold crossing occurs. The 64 KB Flash accommodates BLE stack fragments, LoRaWAN libraries, or proprietary protocol code, while the 8 KB SRAM buffers sensor frames between radio interrupts. This combination of active efficiency, deep sleep depth, and Cortex-M0+ toolchain maturity makes it a strong fit for remote environmental monitoring, agricultural sensors, and structural-health nodes.
Empfohlen
Wearable Health and Fitness Device
The ATSAML22G16A-AUT is well suited to wearable health monitors such as fitness bands, heart-rate patches, and continuous glucose monitor receivers where sub-mW average power consumption is essential. The 32 MHz Cortex-M0+ provides enough MIPS for biosignal filtering, step-counting algorithms, and BLE radio hand-off, while the 490 nA backup mode enables always-on RTC for timestamping and sleep tracking without draining the coin cell. The wide 1.62-3.63 V operating range supports direct connection to single-cell Li-ion or Li-MnO2 coin cells, eliminating the need for a separate LDO. Designers can use the integrated Segment LCD controller to drive a small status display on the wearable, or disable it for compact band designs. The 48-pin TQFP package offers sufficient GPIO for I2C sensor hubs, SPI bio-impedance front-ends, and capacitive touch buttons.
Empfohlen
Smart Thermostat / Home Automation
The ATSAML22G16A-AUT is an excellent choice for smart thermostats and home automation hubs that include a wall-mounted glass display. Its integrated Segment LCD controller can drive up to 320 segments with 8 common lines, removing the need for an external LCD driver chip and reducing BOM cost. The 32 MHz Cortex-M0+ easily handles HVAC control algorithms, schedule management, Zigbee or BLE radio coordination, and capacitive touch button scanning. The 490 nA backup current allows the thermostat to maintain RTC timekeeping and last-state memory across prolonged power outages, while the 64 KB Flash is sufficient for application firmware plus a wireless stack fragment. The 1.62-3.63 V operating range accommodates 24VAC-derived rectified supplies with simple LDO post-regulation, and the -40 to +85 C temperature rating supports installation in unconditioned spaces such as utility closets.
Empfohlen
Utility Meter with Glass Display
The ATSAML22G16A-AUT is purpose-built for electricity, water, and gas meters where a multi-digit glass display, ultra-low standby current, and long-term reliability are mandatory. The integrated Segment LCD controller directly drives TN and STN glass with configurable bias and contrast, while the 490 nA backup current with RTC retention supports 10+ year battery life on a single D-size lithium cell. The 32-bit Cortex-M0+ core executes metrology calculation routines with sufficient headroom for power-quality analysis, tamper detection, and AMR (Automatic Meter Reading) protocol stacks. The 64 KB Flash fits DLMS/COSEM, M-Bus, or Wireless M-Bus protocol libraries, and the wide 1.62-3.63 V supply range tolerates battery voltage sag across the meter's operational life. The 48-pin TQFP package is industry-standard for meter designs and supports easy rework in production.
Empfohlen
Industrial IoT Edge Node
The ATSAML22G16A-AUT serves industrial IoT edge nodes that monitor equipment health, environmental conditions, or process variables in factory settings. The 32 MHz Cortex-M0+ executes Modbus, IO-Link, or proprietary fieldbus protocols, while the integrated Segment LCD can display local status or last-known values even when the network is down. The 39 uA/MHz active current and 490 nA backup current support battery or energy-harvesting powered nodes such as wireless vibration sensors on rotating equipment. The -40 to +85 C industrial temperature rating covers most factory environments including unheated cabinets. Multiple SERCOM peripherals can be configured as UART, SPI, or I2C to interface with analog front-ends, digital sensors, and radio modules without external logic. The 64 KB Flash accommodates TLS stacks for secure cloud connectivity and OTA bootloader support.
Empfohlen
Portable Medical Monitoring Device
The ATSAML22G16A-AUT fits portable medical devices such as pulse oximeters, handheld thermometers, and ambulatory monitors that require IEC 62368-1 / IEC 60601 compliance and long battery life. The Cortex-M0+ core at 32 MHz provides sufficient processing power for SpO2 algorithms, temperature curve smoothing, and USB data transfer to host computers via the integrated full-speed USB 2.0 device. The Segment LCD controller drives the multi-digit numeric display typical of clinical equipment, while the 490 nA backup current preserves battery life when the device is in standby between measurements. The 1.62-3.63 V supply range supports two AA alkaline cells in series or a single Li-ion cell. The wide operating temperature range ensures reliable operation across clinical environments from refrigerated storage to warm patient rooms. The 64 KB Flash holds the application firmware, USB stack, and calibration tables.
Empfohlen
Smart Remote Control with E-Ink / LCD Display
The ATSAML22G16A-AUT is well matched to universal remote controls and HVAC zone controllers with always-on status displays. The integrated Segment LCD or external e-ink driver can be updated periodically to show temperature setpoint, time, or active mode while the MCU sleeps at 490 nA between button presses or radio events. The Cortex-M0+ core handles IR transmit protocols, BLE pairing, and Zigbee or Thread commissioning sequences, and the 32 MHz clock provides sufficient throughput for encrypted communication handshakes. The 64 KB Flash stores IR code libraries and pairing credentials, and the wide supply range supports 2x AA or CR2032 coin-cell topologies. The 48-pin TQFP package exposes enough GPIO for capacitive touch strips, rotary encoders, and multiple IR LEDs without external mux logic.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATSAML22G16A-AUT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATSAML22G17A-AUT | ATSAML22N16A-AUT | ATSAML21G16B-ANT | ATSAML11E16A-AUT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) | 48-TQFP (ANT) | 48-TQFP (AUT) |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M23 (TrustZone) |
| Max Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash | 64 KB | 128 KB (+100%) | 64 KB | 64 KB | 64 KB |
| SRAM | 8 KB | 16 KB (+100%) | 8 KB | 8 KB | 8 KB |
| Segment LCD | Yes (8 common) | Yes (8 common) | Yes (8 common) | No | No |
| USB | FS USB 2.0 Device | FS USB 2.0 Device | FS USB 2.0 Device | FS USB 2.0 Device | No |
| Supply Range | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V |
Wichtigste Unterscheidungsmerkmale
- Integrated Segment LCD controller reduces BOM cost and PCB area (vs. ATSAML21G16B-ANT)
- Deeper sleep mode with RTC retention at 490 nA (vs. ATSAML11E16A-AUT)
- Same-package drop-in upgrade path with double memory (vs. ATSAML22G17A-AUT)
Designhinweise
Decouple VDDIO and VDDANA with separate 100 nF X7R ceramic capacitors placed within 3 mm of each supply pin, and add a bulk 4.7 uF or 10 uF ceramic near the IC to handle the Segment LCD charge-pump transient currents. Estimated: when driving 320 LCD segments at 50 Hz refresh, peak current pulses can reach several mA; insufficient bulk capacitance causes visible display flicker and brown-out resets. Place a 1 uF ceramic on VDDCORE (pin 31) per the SAM L22 datasheet power-supply schematic. Tie unused VDDIO pins to the same rail as used pins.
Route the 32.768 kHz crystal traces to PA00/PA01 as short and symmetric as possible, with a ground guard ring around the crystal traces to reduce noise coupling from adjacent switching signals. Estimated: for a typical ECS-320X crystal with 12.5 pF load capacitance, keep traces under 5 mm and place load capacitors within 2 mm of the crystal pins. The internal load capacitor configuration register (X32KLPMUX / X32KLPCFG) must match the crystal's load rating; mismatch causes +/- 20 ppm RTC error which directly affects timekeeping accuracy over months of operation.
Do not assume the ATSAML22G16A-AUT defaults to the internal 32 kHz oscillator at boot; the firmware must explicitly select the clock source via the GCLK and SYSCTRL registers, otherwise the USB peripheral and ADC will fail to operate at correct baud rates or sample rates. Avoid enabling brown-out detection at 3.0 V when running from a single Li-ion cell near end-of-discharge, as this causes spurious resets; configure BOD33 at 2.7 V or disable it for battery-powered applications. The Segment LCD bias generator requires software configuration of charge pump voltage and bias mode before any display writes - writing to LCD segments without enabling the bias generator produces no visible output and no error code.
USB DP/DM traces on PA24/PA25 must be routed as a 90-ohm differential pair with continuous reference plane on the layer below; trace length matching within 2 mm is mandatory for full-speed USB compliance. Add a 47 nF series capacitor on each of the VBUS and D-/D+ lines only if implementing bus-powered designs; for self-powered applications, the SAM L22's internal USB pull-up is sufficient. The Segment LCD COM/SEG traces can be routed on any layer but should not cross noisy switching signals such as SPI clock lines, as capacitive coupling can inject flicker artifacts into the display.
Compliance-Informationen
ROHS3 Compliant per Microchip USA product listing. Operating temperature -40 to +85 C industrial grade; not AEC-Q100 qualified for automotive - choose ATSAML22G16A-AUTVAO or similar -VAO suffix parts for AEC-Q100 Grade 1/2 automotive applications.
