ATSAML22G16A-MUT - 32MHz Cortex-M0+ MCU 64KB Flash | Microchip
MPN: ATSAML22G16A-MUT ✓ Hoạt độngATSAML22G16A-MUT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals. The SAM L22 family sits in Microchip's ultra-low-power MCU portfolio, optimized for battery-powered and energy-harvesting applications. The Cortex-M0+ core is the smallest and most energy-efficient ARM core, making it the right choice when deterministic real-time response and long battery life outweigh raw computational throughput. The SAM L22 belongs to the power management MCU segment, sitting hierarchically between 8-bit MCUs (e.g., PIC16) and higher-end Cortex-M4/M7 families (e.g., SAME70).
Key features include segmented LCD support (up to 8x40 segments with on-chip charge pump), a 12-bit ADC with oversampling, multiple SERCOM interfaces configurable as UART/SPI/I2C, a full-speed USB 2.0 device/host with embedded PHY, an ISO 7816 smart-card interface, and an integrated PTC (Peripheral Touch Controller) for capacitive touch sensing. The device is AEC-Q100 qualified, making it automotive-ready.
Architecturally, the SAM L22 uses an event-driven SERCOM system and SleepWalking peripherals that allow the CPU to remain in deep sleep until a peripheral triggers an interrupt, dramatically reducing system-level power. The 39 µA/MHz active figure and 490 nA backup figure are enabled by dedicated low-power voltage regulators and an ultra-low-power RTC on a separate power domain.
Typical applications include IoT sensor nodes, smart metering, wearable fitness bands, electronic shelf labels, industrial HMI with LCD, automotive body controllers, and battery-powered medical devices such as glucose meters. Designers should consider this MCU when sub-1 µA standby current and segment-LCD support are required without moving to a Cortex-M4 class device. This page consolidates distributor pricing, drop-in package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ATSAML22G16A-MUT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAML22G16A-MUT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, USB, ADC, Active Current.
ATSAML22G17A-MUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAML22G18A-MUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAML22G16A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAML21G16B-MUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAML10E16A-MUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAML11D16A-MFT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMG55J19B-MUT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAML22G16A-MUT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M0+ |
| CPU Bit Width | 32-bit |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| SRAM | 8 KB |
| Supply Voltage (VDD) | 1.6 V to 3.6 V |
| Active Current (CoreMark) | 39 µA/MHz |
| Backup Mode Current (RTC) | 490 nA |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | 48-pin QFN (7x7 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| AEC-Q100 | Qualified |
| Carrier Type | Tape & Reel |
| Crypto Accelerator | AES 256-bit |
| LCD Controller | Up to 8x40 segments |
| USB | USB 2.0 Full-Speed device/host |
| Touch Sensor | Peripheral Touch Controller (PTC) |
Cấu hình chân ATSAML22G16A-MUT
| Chân 1 | PA00 — GPIO / XIN (external clock input) |
| Chân 2 | PA01 — GPIO / XOUT (external clock output) |
| Chân 3 | PA02 — GPIO / ADC AIN0 / DAC VOUT |
| Chân 4 | PA03 — GPIO / ADC AIN1 / REF VREFA |
| Chân 5 | GND — Ground |
| Chân 6 | VDD — Digital supply voltage |
| Chân 7 | PA04 — GPIO / SERCOM0 PAD0 |
| Chân 8 | PA05 — GPIO / SERCOM0 PAD1 |
| Chân 9 | PA06 — GPIO / SERCOM0 PAD2 |
| Chân 10 | PA07 — GPIO / SERCOM0 PAD3 |
| Chân 11 | PA08 — GPIO / SERCOM1 PAD0 / USB DP |
| Chân 12 | PA09 — GPIO / SERCOM1 PAD1 / USB DM |
| Chân 13 | PA10 — GPIO / SERCOM2 PAD0 |
| Chân 14 | PA11 — GPIO / SERCOM2 PAD1 |
| Chân 15 | PA12 — GPIO / SERCOM2 PAD2 |
| Chân 16 | PA13 — GPIO / SERCOM2 PAD3 |
| Chân 17 | PA14 — GPIO / SERCOM3 PAD0 |
| Chân 18 | PA15 — GPIO / SERCOM3 PAD1 |
| Chân 19 | PA16 — GPIO / SERCOM3 PAD2 / I2S SCK |
| Chân 20 | PA17 — GPIO / SERCOM3 PAD3 / I2S FS |
| Chân 21 | PA18 — GPIO / SERCOM4 PAD0 |
| Chân 22 | PA19 — GPIO / SERCOM4 PAD1 |
| Chân 23 | PA20 — GPIO / SERCOM4 PAD2 |
| Chân 24 | PA21 — GPIO / SERCOM4 PAD3 |
| Chân 25 | PA22 — GPIO / SERCOM5 PAD0 |
| Chân 26 | PA23 — GPIO / SERCOM5 PAD1 |
| Chân 27 | PA24 — GPIO / USB SOF 1kHz |
| Chân 28 | PA25 — GPIO / USB VBUS |
| Chân 29 | GND — Ground |
| Chân 30 | VDD — Digital supply voltage |
| Chân 31 | PA26 — GPIO / ADC AIN2 |
| Chân 32 | PA27 — GPIO / ADC AIN3 |
| Chân 33 | PA28 — GPIO / ADC AIN4 / BOD VIN |
| Chân 34 | PA29 — GPIO / ADC AIN5 |
| Chân 35 | PA30 — GPIO / SWCLK (programming clock) |
| Chân 36 | PA31 — GPIO / SWDIO (programming data) |
| Chân 37 | PB00 — GPIO / LCD SEG0 |
| Chân 38 | PB01 — GPIO / LCD SEG1 |
| Chân 39 | PB02 — GPIO / LCD SEG2 / PTC Y0 |
| Chân 40 | PB03 — GPIO / LCD SEG3 / PTC Y1 |
| Chân 41 | PB04 — GPIO / LCD SEG4 |
| Chân 42 | PB05 — GPIO / LCD SEG5 |
| Chân 43 | PB06 — GPIO / LCD SEG6 |
| Chân 44 | PB07 — GPIO / LCD SEG7 |
| Chân 45 | PB08 — GPIO / LCD SEG8 |
| Chân 46 | PB09 — GPIO / LCD SEG9 / PTC X0 |
| Chân 47 | PB10 — GPIO / LCD SEG10 / PTC X1 |
| Chân 48 | PB11 — GPIO / LCD SEG11 / PTC X2 |
Ứng dụng tiêu biểu
ATSAML22G16A-MUT phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Nodes, Smart Metering with LCD Display, Wearable Fitness Bands, Automotive Body Controllers, Industrial HMI with Segmented LCD, Battery-Powered Medical Devices.
Battery-Powered IoT Sensor Nodes
The ATSAML22G16A-MUT's 490 nA backup current with RTC retention and 39 µA/MHz active consumption make it ideal for IoT sensor nodes running on coin cells or 2x AA batteries. SleepWalking SERCOM peripherals allow the CPU to stay in deep sleep until a sensor interrupt fires, while the integrated 12-bit ADC with hardware oversampling supports direct connection to temperature, humidity, and gas sensors. Compared to Cortex-M4 alternatives, the M0+ core halves active energy while remaining fast enough for LoRaWAN/Sigfox protocol stacks.
Được đề xuất
Smart Metering with LCD Display
The ATSAML22G16A-MUT integrates an LCD controller supporting up to 8x40 segments with an on-chip charge pump, eliminating external LCD bias ICs in electricity, water, and gas meters. Combined with its 490 nA backup mode and 10+ year battery capability, it is purpose-built for utility metering. The ISO 7816 interface supports smart-card add-on modules, and the 32-bit Cortex-M0+ core handles metering algorithms, tariff logic, and wireless M-Bus or wM-Bus stacks within the 64KB Flash budget.
Được đề xuất
Wearable Fitness Bands
Wearables demand sub-50 µA average current for multi-day battery life, and the ATSAML22G16A-MUT delivers with Cortex-M0+ efficiency. The Peripheral Touch Controller (PTC) supports capacitive touch buttons and sliders without external ICs, while the integrated LCD segment driver powers always-on displays showing time, steps, and notifications. Its small QFN-48 (7x7 mm) footprint enables compact PCB layouts typical of wrist-worn form factors. Compared to Cortex-M4 BLE SoCs, the SAM L22 saves 30-40% system energy when BLE is offloaded to a companion radio.
Được đề xuất
Automotive Body Controllers
AEC-Q100 qualification makes the ATSAML22G16A-MUT suitable for non-safety automotive body electronics such as door modules, seat controllers, and HVAC panels. The 1.6V-3.6V supply range tolerates 12V battery transients when paired with a TVS clamp and LDO. The Cortex-M0+ core handles LIN bus stacks, PWM actuator control via TCC timers, and capacitive touch interfaces for sealed keypads. Compared to AEC-Q100 Cortex-M4 parts, the SAM L22 reduces BOM cost by 25% in body-domain applications where LCD and touch dominate.
Được đề xuất
Industrial HMI with Segmented LCD
Factory-floor HMIs require readable displays under wide temperature ranges and vibration, where segmented LCDs excel over TFT in cost and contrast. The ATSAML22G16A-MUT's 8x40-segment LCD controller and -40C to +85C operating range cover most industrial environments. The Cortex-M0+ core handles Modbus RTU, IO-Link stack, or EtherCAT slave protocols via the SERCOM interfaces, while the AES 256-bit engine secures authenticated firmware updates. Compared to TFT-based HMIs, the LCD variant costs 40% less at the BOM level.
Được đề xuất
Battery-Powered Medical Devices
Medical devices such as glucose meters, pulse oximeters, and portable ECG patches benefit from the ATSAML22G16A-MUT's ultra-low backup current (490 nA) and segment-LCD support, which together enable multi-month battery life on coin cells. The Cortex-M0+ deterministic interrupt response is sufficient for sensor sampling loops at kHz rates, while the 12-bit ADC with hardware oversampling reduces noise for photoplethysmography (PPG) measurements. The on-chip AES 256-bit engine supports secure patient data logging required by HIPAA-style guidelines.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAML22G16A-MUT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAML22G17A-MUT | ATSAML22G18A-MUT | ATSAML21G16B-MUT | ATSAML10E16A-MUT | ATSAML11D16A-MFT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-48 (7x7 mm) | QFN-48 (7x7 mm) - same | QFN-48 (7x7 mm) - same | QFN-48 (7x7 mm) - same | QFN-48 (7x7 mm) - same | QFN-48 (7x7 mm) - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M23 (TrustZone-M) |
| Flash | 64 KB | 128 KB | 256 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 8 KB | 16 KB | 32 KB | 8 KB | 8 KB | 8 KB |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 48 MHz | 32 MHz | 32 MHz |
| Active Current | 39 µA/MHz | 39 µA/MHz | 39 µA/MHz | 35 µA/MHz | 30 µA/MHz | 40 µA/MHz |
| Backup Current (RTC) | 490 nA | 490 nA | 490 nA | 450 nA | 490 nA | 520 nA |
| LCD Controller | Yes (8x40 segments) | Yes (8x40 segments) | Yes (8x40 segments) | No | No | No |
| USB 2.0 Full-Speed | Yes (device/host) | Yes (device/host) | Yes (device/host) | Yes (device/host) | No | No |
| Unit Price (qty 1) | $3.85 | $4.10 | $4.50 | $3.75 | $3.20 | $3.95 |
Bảo phân biệt quan trọng
- Integrated segment LCD controller with on-chip charge pump (vsATSAML21G16B-MUT)
- 490 nA ultra-low-power backup mode (vsATSAMG55J19B-MUT)
- AEC-Q100 automotive qualification at Cortex-M0+ price point (vsATSAML10E16A-MUT)
- Full USB 2.0 with embedded PHY and ISO 7816 smart-card interface (vsATSAML11D16A-MFT)
Ghi chú thiết kế
The ATSAML22G16A-MUT has two supply domains - VDDIN (main digital 1.6-3.6V) and VDDANA (analog 1.6-3.6V). Decouple both domains with a 100nF ceramic capacitor placed within 5mm of each pin, plus a bulk 4.7µF ceramic at the supply entry. If using the integrated LCD charge pump, add a 1µF ceramic on VLCD. Avoid routing the analog ADC traces under switching nodes to preserve the 12-bit ADC SNR.
Estimated: The QFN-48 (7x7) package has a typical θJA of approximately 30°C/W on a 4-layer JEDEC test board. At maximum active load (32 MHz, all peripherals on, 39 µA/MHz, 3.3V), power dissipation is approximately 4.1 mW, so junction temperature rise is only 0.12°C above ambient - thermal management is rarely a concern. However, in enclosed industrial housings with no airflow, ensure ambient temperature stays below 85°C for reliable AEC-Q100-grade operation.
Solder the QFN-48 exposed pad (EP) directly to a flooded copper pad on the top layer with 9 thermal vias (0.3mm drill, 0.6mm pitch) connecting to inner ground planes. This both grounds the EP electrically and reduces θJA by 30-50%. Keep the SWD/SWCK pins (PA30/PA31) routed with no more than 50mm trace length and bypass them with 22Ω series resistors only if you observe SWD communication errors.
The Cortex-M0+ core does NOT have a hardware divide instruction - using `/` or `%` in tight loops on 32-bit integers can stall for 32 cycles. Use libgcc's __aeabi_uidiv or pre-computed constants instead. Also note that GPIO slew-rate and drive-strength settings must be configured before enabling high-speed SERCOM or I2S lines, otherwise signal integrity violations will appear on the bus.
When using the integrated USB 2.0 full-speed transceiver, the USB DP/DM traces must be 90Ω differential, length-matched to within 150 mil, and routed over a continuous ground plane. Place the ESD protection array (e.g., USBLC6-2) within 5mm of the connector. Without proper routing, USB compliance failures occur at the eye-diagram test, especially at 12 MHz Full-Speed edge rates.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip material declaration. AEC-Q100 Grade 1 qualified for automotive applications. Halogen-free per IEC 61249-2-21. Conflict minerals compliant per Section 1502 of the Dodd-Frank Act.