ATSAML22G17A-AUT - ARM Cortex-M0+ 32MHz 128KB MCU | Microchip
MPN： ATSAML22G17A-AUT ✓ 啟用中ATSAML22G17A-AUT 概覽
What is an ARM Cortex-M0+ microcontroller? The Cortex-M0+ is ARM's smallest and most energy-efficient application processor core, designed for deeply embedded applications that demand deterministic real-time behaviour, low power, and minimal silicon cost. It belongs to the broader category of microcontrollers (MCU), which themselves are single-chip computers containing CPU, memory, and peripherals. The SAM L22 family specifically targets ultra-low-power IoT and battery-backed sensor applications by adding sophisticated power domains such as Backup mode (490 nA with RTC running), a separate RTC domain, and on-chip segmented LCD support.
Key features include 128KB Flash, 16KB SRAM, a 12-bit 1 Msps ADC, a 16-bit Sigma-Delta ADC, up to 36 GPIO, segment LCD controller, multiple SERCOM (UART/SPI/I2C) interfaces, a full-speed USB device with embedded transceiver, hardware AES, capacitive touch (PTC) peripheral, and a Real-Time Clock with calendar. Industrial-grade operating range of -40C to +85C is provided by the AUT suffix. The integrated segment LCD controller and PTC make it differentiated from generic Cortex-M0+ parts by supporting human-machine interfaces and touch UI on a single chip.
Architecture-wise, the SAM L22G uses a Harvard-bus Cortex-M0+ core with a single-cycle hardware multiplier, NVIC with 4 priority levels, and Microchip's Event System for inter-peripheral signalling without CPU intervention. Advanced power management is provided through Sleep, Idle, Standby, and Backup modes, with the Backup mode consuming only 490 nA while retaining 8KB of backup SRAM and the RTC. A built-in 32 kHz crystal oscillator and 8 MHz DFLL allow precise low-jitter clocking for sensor and metering applications.
Typical applications include ultra-low-power IoT sensor nodes, battery-operated medical wearables, smart utility meters with segment LCD, capacitive touch human-machine interfaces, USB peripherals, industrial sensor transmitters, and remote controls. When designing with this MCU, prioritize using Backup mode with RTC wake for battery life optimization, and ensure that the LCD bias generation capacitors and segment pin assignments match the target glass to avoid ghosting artifacts.
直接替換替代品，適用於 ATSAML22G17A-AUT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAML22G17A-AUT （相同外形與佔位） — 差異在於 Package, Operating Temperature, ADC, USB, Mounting Type.
ATSAML22G16A-MUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAML22G17A-MUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAML21J18B-AUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAME53J20A-AUT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EFM32G222F128-QFP48T
✅ 直接替換📋 參考替代品（不在目錄中）
STM32L052K8T6
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAML22G17A-AUT 最大額定值與電氣特性
| Core | ARM Cortex-M0+ 32-bit |
| Series | SAM L22 (SAM L22G) |
| Max Clock Frequency | 32 MHz |
| CoreMark/MHz | 2.46 |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Backup SRAM | 8 KB (in Backup domain) |
| 供應電壓 | 1.62 V to 3.6 V |
| Active Current | 39 uA/MHz (CPU running CoreMark) |
| Backup Mode Current | 490 nA (RTC running) |
| 工作溫度 | -40 C to +85 C (industrial, AUT grade) |
| 封裝 | 48-pin TQFP (7 x 7 mm) |
| 安裝類型 | Surface Mount |
| ADC | 12-bit 1 Msps SAR + 16-bit Sigma-Delta |
| Peripherals | SERCOM (UART/SPI/I2C), USB FS, PTC, AES, RTC, LCD |
| Segment LCD | Yes, on-chip controller |
| USB | USB 2.0 Full-Speed Device with embedded transceiver |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant |
ATSAML22G17A-AUT 48-pin tqfp (7 x 7 mm) 腳位配置指南
ATSAML22G17A-AUT（48-pin tqfp (7 x 7 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATSAML22G17A-AUT.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAML22G17A-AUT 適用於 7 應用s: Ultra-Low-Power IoT Sensor Nodes, Smart Utility Meters with Segment LCD, Capacitive Touch Human-Machine Interfaces, USB-Based Sensor Peripherals, Battery-Operated Medical Wearables, Industrial Sensor Transmitters, Remote Controls and Home Automation.
Ultra-Low-Power IoT Sensor Nodes
The ATSAML22G17A-AUT's 490 nA Backup mode with RTC running and 39 uA/MHz active consumption make it ideal for coin-cell battery IoT sensor nodes transmitting temperature, humidity, or motion data every few minutes. The MCU wakes from Backup via RTC match, takes a sensor reading through its 16-bit Sigma-Delta ADC, transmits over a connected radio, and returns to deep sleep - yielding multi-year battery life. Its 128KB Flash supports BLE/Zigbee stack plus application firmware.
推薦
Smart Utility Meters with Segment LCD
The ATSAML22G17A-AUT integrates an on-chip segment LCD controller supporting up to 8 common and 25 segment pins (288 segments), eliminating the need for an external LCD driver in electricity/water/gas meters. The 16-bit Sigma-Delta ADC enables precision energy measurement, while Backup mode with RTC maintains timekeeping and tamper detection during mains power loss. The 1.62-3.6V supply matches single-cell Li-ion or 2xAA battery operation common in metering.
推薦
Capacitive Touch Human-Machine Interfaces
The ATSAML22G17A-AUT's integrated Peripheral Touch Controller (PTC) supports up to 256 capacitive touch channels with hardware-driven mutual- and self-capacitance sensing, enabling touch sliders, buttons, and proximity sensors without external touch ICs. Combined with the on-chip segment LCD for menu display and SERCOM peripherals for backlight/keypad I/O, it serves as a single-chip touch HMI solution for kitchen appliances, industrial control panels, and consumer electronics.
推薦
USB-Based Sensor Peripherals
The ATSAML22G17A-AUT's integrated USB 2.0 Full-Speed device controller with on-chip transceiver and internal pull-up resistors enables USB peripherals - HID sensors, data loggers, or programming dongles - using only a USB connector and ESD protection. Its Cortex-M0+ core and 128KB Flash easily handle USB stacks like LUFA or TinyUSB, while multiple SERCOM channels handle communication with downstream sensors over UART, SPI, or I2C.
推薦
Battery-Operated Medical Wearables
The ATSAML22G17A-AUT's low active current (39 uA/MHz) and deep Backup mode (490 nA) suit battery-powered medical wearables like continuous glucose monitors, pulse oximeters, and wearable ECG patches. The 16-bit Sigma-Delta ADC measures bioelectric signals with medical-grade precision, while the AES hardware accelerator secures patient data. Industrial -40 to +85C operation covers skin-contact temperature ranges during clinical use.
推薦
Industrial Sensor Transmitters
Industrial 4-20 mA loop-powered or battery-backed sensor transmitters benefit from the ATSAML22G17A-AUT's wide 1.62-3.6V supply, 16-bit ADC precision, and robust -40 to +85C industrial temperature range. The MCU's SERCOM channels connect to industrial fieldbus interfaces (RS-485, IO-Link) via external transceivers, while Backup mode retains process state during power interruptions. Hardware AES secures wireless or wired industrial communication.
推薦
Remote Controls and Home Automation
Low-power remote controls using the ATSAML22G17A-AUT benefit from sub-microamp standby, integrated PTC for capacitive touch buttons, segment LCD for status display, and 32 MHz CPU responsive to user input. The MCU can stay in Backup mode for years on a coin cell, waking on PTC touch or RTC timer to transmit IR/RF commands. Its wide supply range accepts unregulated battery packs, simplifying power-tree design.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAML22G17A-AUT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAML22G16A-MUT | ATSAML22G17A-MUT | ATSAML21J18B-AUT | ATSAME53J20A-AUT | EFM32G222F128-QFP48T | STM32L052K8T6 |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Silicon Labs | STMicroelectronics |
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP - same | 48-TQFP - same footprint | 48-TQFP - same | 48-LQFP (7x7) - same footprint |
| Core | Cortex-M0+ 32 MHz | Cortex-M0+ 32 MHz | Cortex-M0+ 32 MHz | Cortex-M0+ 48 MHz | Cortex-M4F 120 MHz | Cortex-M3 32 MHz | Cortex-M0+ 32 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 256 KB | 1 MB | 128 KB | 64 KB |
| SRAM | 16 KB | 8 KB | 16 KB | 32 KB | 256 KB | 16 KB | 8 KB |
| Operating Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.98 V to 3.8 V | 1.65 V to 3.6 V |
| USB | USB 2.0 FS Device (on-chip transceiver) | USB FS Device | USB FS Device | USB FS Device | USB FS Host/Device | No USB | USB FS Device |
| Segment LCD | Yes (on-chip controller) | Yes | Yes | Yes | No | Yes | No |
主要差異化特點
- Integrated 16-bit Sigma-Delta ADC plus 12-bit SAR ADC on-chip (對比ATSAMD21G18A-AUT)
- Sub-microamp Backup mode with 8KB backup SRAM (對比EFM32G222F128-QFP48T)
- Industrial-grade -40 to +85C operation in 48-TQFP (對比ATSAML22G17A-UUT (48-WLCSP commercial))
設計說明
The SAM L22G's Backup mode consumes only 490 nA with the 32 kHz crystal oscillator and RTC running, retaining 8KB backup SRAM for state preservation. To maximize battery life, configure the RTC to wake the MCU at the next event rather than using periodic Active polling. Estimated: at 1 wake per hour and 5 ms active processing at 32 MHz, average current stays below 10 uA, supporting multi-year operation from a single CR2032 coin cell.
Place the 32.768 kHz crystal within 5 mm of the XIN32/XOUT32 pins with short, symmetric traces and a ground guard ring to minimize stray capacitance. Decouple VDDIN and VDDIO with 100 nF X7R ceramic capacitors as close to the pins as possible, with a bulk 4.7 uF to handle switching transients. For USB applications, route the DP/DM traces as a 90-ohm differential pair with length matching under 50 mils.
Do not assume all ATSAML22G17A variants are drop-in compatible: the G17A-AUT is 48-TQFP industrial, G17A-UUT is 48-WLCSP commercial, and G17A-CFUT is 64-UFBGA - only the MUT suffix shares the AUT footprint. Pin 1 dot on TQFP must match PCB silkscreen orientation; the WLCSP and UFBGA variants use completely different pin maps. Always check the datasheet pinout diagram before PCB bring-up.
合規資訊
RoHS and REACH compliant per Microchip product page. Standard grade is not AEC-Q100 qualified - choose ATSAML21J18B-AUT for automotive applications.
