ATSAMD11D14A-SSNT - 48MHz Cortex-M0+ MCU, 16KB Flash | Microchip
MPN: ATSAMD11D14A-SSNT ✓ Hoạt độngATSAMD11D14A-SSNT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one silicon die. The Cortex-M0+ core is an ultra-low-power ARM processor designed for energy-efficient embedded applications; in the broader taxonomy it sits below Cortex-M3/M4 parts and above 8-bit microcontrollers in performance. The SAM D11D series specifically targets designs that need modern 32-bit performance with USB connectivity in compact packages.
Key features of the ATSAMD11D14A-SSNT include the 48 MHz Cortex-M0+ core reaching 2.46 CoreMark/MHz, 16 KB of in-system programmable Flash, 4 KB SRAM, and an integrated USB 2.0 Full-Speed device controller with on-chip transceiver. The device also includes a SERCOM (serial communication) interface count of up to six, a 12-bit ADC, 10-bit DAC, and multiple timers. The 20-pin SOIC footprint keeps the solution footprint minimal while exposing enough I/O for typical sensor, motor, and human-interface nodes.
The SAM D11D architecture uses a single-cycle hardware multiplier, tightly-coupled memory bus, and Microchip's proprietary peripheral event system that lets peripherals trigger each other without CPU intervention. SleepWalking I/O and multiple low-power modes (IDLE, STANDBY, BACKUP) reduce active current to well below 1 mA in deep sleep, allowing battery-powered designs to extend operating life. The integrated USB transceiver removes the need for an external PHY or precision resistors, simplifying USB device certification.
Typical applications include USB HID peripherals, home automation nodes, consumer electronics such as remote controls and gaming accessories, metering endpoints, industrial sensor hubs, and low-cost IoT bridges. The combination of USB, ADC, and rich serial peripherals covers most connected-sensor use cases in a single chip.
When designing with this part, note the 20-pin SOIC package shares the SAM D11D family footprint, enabling drop-in migration between pin-compatible family members. Use the Atmel/Microchip START code-configurator to generate initialization code and verify the USB peripheral against the latest USB device class stack for certification.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD11D14A-SSNT — 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 ATSAMD11D14A-SSNT (cùng hình factor và footprint) — khác nhau ở Package, ADC, RoHS Status, DAC, MSL Level.
ATSAMD11C14A-SSNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD11D14A-MNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD10D14A-SSNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD11C14A-SSUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD10D14A-MNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD11D14A-SSNT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M0+ |
| CPU Core Count | Single-core |
| Maximum CPU Frequency | 48 MHz |
| CoreMark per MHz | 2.46 CoreMark/MHz |
| Program Flash | 16 KB (16K x 8) |
| SRAM | 4 KB |
| Operating Voltage Range | 1.6 V to 3.6 V |
| Hộp | 20-SOIC (300 mil) |
| Kiểu lắp đặt | Surface Mount |
| USB Interface | USB 2.0 Full-Speed Device with on-chip transceiver |
| Nhiệt độ hoạt động | -40C to +105C |
| ADC | 12-bit |
| DAC | 10-bit |
| SERCOM (Serial Communication) Channels | Up to 6 |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân ATSAMD11D14A-SSNT
| Chân 1 | VDD — Power supply input (1.6V to 3.6V) |
| Chân 2 | USB_DP — USB Data Plus (D+) |
| Chân 3 | USB_DM — USB Data Minus (D-) |
| Chân 4 | RESET — Reset input, active low |
| Chân 5 | SWDIO — Serial Wire Debug I/O |
| Chân 6 | SWCLK — Serial Wire Debug Clock |
| Chân 7 | PA04 — General purpose I/O / SERCOM0 / ADC |
| Chân 8 | PA05 — General purpose I/O / SERCOM0 / ADC |
| Chân 9 | PA06 — General purpose I/O / SERCOM0 / ADC |
| Chân 10 | GND — Ground reference |
| Chân 11 | PA07 — General purpose I/O / SERCOM0 / ADC |
| Chân 12 | PA08 — General purpose I/O / SERCOM1 / ADC |
| Chân 13 | PA09 — General purpose I/O / SERCOM1 / ADC |
| Chân 14 | PA10 — General purpose I/O / SERCOM1 / ADC |
| Chân 15 | PA11 — General purpose I/O / SERCOM1 / ADC |
| Chân 16 | PA14 — General purpose I/O / SERCOM2 |
| Chân 17 | PA15 — General purpose I/O / SERCOM2 |
| Chân 18 | PA16 — General purpose I/O / SERCOM3 |
| Chân 19 | PA17 — General purpose I/O / SERCOM3 |
| Chân 20 | VDD — Power supply input (1.6V to 3.6V) |
Ứng dụng tiêu biểu
ATSAMD11D14A-SSNT phù hợp cho 6 Áp dụngs: USB HID Peripherals, Home Automation Sensor Nodes, Consumer Electronics Remote Controls, Smart Metering Endpoints, Industrial Sensor Hubs, IoT Bridges and USB Dongles.
USB HID Peripherals
The ATSAMD11D14A-SSNT fits USB HID peripherals because its integrated USB 2.0 Full-Speed device controller with on-chip transceiver eliminates the need for an external PHY and precision pull-up resistors, saving BOM cost and PCB area. The 48 MHz Cortex-M0+ core running at 2.46 CoreMark/MHz delivers sufficient throughput for HID report generation at 1000 Hz polling, while 16 KB Flash holds USB descriptors plus a small bootloader. Its 1.6 V-3.6 V supply range supports direct USB bus-powered operation after a 3.3 V LDO. Designers should route D+/D- as a 90-ohm differential pair and add ESD protection diodes near the connector.
Được đề xuất
Home Automation Sensor Nodes
The ATSAMD11D14A-SSNT is well suited to home automation sensor nodes that require USB connectivity for commissioning or firmware updates plus low-power standby operation for battery life. The 12-bit ADC provides accurate sensor readings, while SleepWalking I/O and BACKUP mode reduce standby current to allow multi-year coin-cell operation. Six SERCOM channels support I2C sensors, SPI displays, and UART modules concurrently. The 20-SOIC package is hand-solderable for prototyping, which speeds early-stage development cycles for small-volume smart-home products.
Được đề xuất
Consumer Electronics Remote Controls
The ATSAMD11D14A-SSNT serves consumer remote controls because its 48 MHz Cortex-M0+ offers more headroom than 8-bit MCUs while maintaining sub-1 mA active current for battery-powered designs. The integrated USB peripheral enables direct firmware updates from a PC or phone charger without an external programmer. With 16 KB Flash and 4 KB SRAM, the device fits IR/RF protocol stacks, button matrix scanning, and BLE pairing sequences via a UART-attached radio. The 20-SOIC 300-mil package simplifies assembly at consumer price points.
Được đề xuất
Smart Metering Endpoints
The ATSAMD11D14A-SSNT fits smart metering endpoints that need reliable 32-bit processing, USB for service technician readout, and industrial-grade -40C to +105C temperature support. The 12-bit ADC captures analog sensor signals with calibrated linearity, and the on-chip 10-bit DAC supports calibration or 4-20 mA loop emulation. BACKUP mode with RTC keeps time-of-day across power cycles for time-stamped metering data. The Cortex-M0+ provides CRC and AES peripherals that can be offloaded for secure data logging when paired with external crypto ICs.
Được đề xuất
Industrial Sensor Hubs
The ATSAMD11D14A-SSNT is well-matched to industrial sensor hubs that aggregate multiple I2C/SPI sensors into a USB-attached industrial node. Six SERCOM channels can be multiplexed to handle up to six concurrent serial peripherals, and the 48 MHz Cortex-M0+ runs at 2.46 CoreMark/MHz for sensor fusion and filtering. The 1.6 V-3.6 V supply works directly from regulated 3.3 V industrial rails, while the -40C to +105C temperature grade tolerates factory floor environments. The 20-SOIC footprint enables easy hand rework on prototype assemblies during field testing.
Được đề xuất
IoT Bridges and USB Dongles
The ATSAMD11D14A-SSNT fits IoT bridges that connect legacy RS-232/RS-485 equipment to modern USB hosts because its on-chip USB Full-Speed transceiver plus six SERCOM channels handle both UART and USB concurrently. The 16 KB Flash fits CDC-ACM and vendor-class USB stacks with a small application layer, while 4 KB SRAM is enough for USB ping-pong buffers and protocol state. Designers can directly enumerate as a COM port on PC, Mac, and Linux without driver installation, enabling zero-install IoT bridges. The 20-SOIC package keeps the dongle small enough for laptop-side use.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD11D14A-SSNT — 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 | ATSAMD11C14A-SSNT | ATSAMD11D14A-MNT | ATSAMD10D14A-SSNT | ATSAMD11C14A-SSUT | ATSAMD10D14A-MNT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (300 mil) | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SSOP - smaller pitch | 20-SOIC - same |
| CPU Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| USB Peripheral | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | No USB | USB 2.0 Full-Speed Device | No USB |
| Operating Voltage | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
Bảo phân biệt quan trọng
- Integrated USB 2.0 Full-Speed with on-chip transceiver (vsATSAMD10D14A-SSNT)
- Compact 20-SOIC footprint with Cortex-M0+ performance (vsATSAMC21E17A-AUT)
- Six SERCOM channels for flexible peripheral mapping (vsPIC16F628-04/SO)
Ghi chú thiết kế
Place a 1 µF X7R ceramic decoupling capacitor as close as possible to the VDD pins (1 and 20 on 20-SOIC) and a 100 nF decoupling capacitor for high-frequency noise. According to the SAM D11 datasheet, the part draws up to ~10 mA active and <1 µA in BACKUP mode. Use a low-dropout regulator such as the Microchip MCP1700 for USB-bus-powered designs to stay above 3.3 V under transient load.
Route the USB DP and DM signals as a 90-ohm differential pair with controlled impedance, keeping the pair length-matched within 2 mm and avoiding splits for vias or planes. Add 27-33 ohm series resistors close to the MCU side per USB 2.0 high-speed signal-integrity guidelines. Place a 0.1 µF decoupling capacitor within 5 mm of each VDD pin. According to the SAM D11 datasheet, the integrated USB transceiver removes the need for external precision resistors.
Do not omit the SWDIO/SWCLK pull-up resistors on the programming/debug pins - these are required for reliable ARM SWD programming. Ensure the RESET pin is held low during power-up and not left floating. According to the SAM D11 datasheet, the part requires a 1.6 V minimum supply at startup; inrush on USB bus power can drop the rail below this threshold if bulk capacitance is insufficient. Add at least 10 µF bulk capacitance on the 3.3 V rail.
Keep the 20-SOIC 300-mil package land pattern correct to avoid solder-bridging during reflow. Use Microchip's free Atmel START tool to generate the recommended SAM D11 land pattern and pinout diagram. According to the manufacturer datasheet, exposed thermal considerations are minimal at SOIC power levels, but routing the VDD plane on an inner layer improves decoupling and reduces EMI from switching I/O.
Thông tin tuân thủ
RoHS compliant per distributor listing. Industrial grade -40C to +105C. Not AEC-Q100 qualified - choose ATSAMC21 family for automotive applications. Lead-free reflow profile per J-STD-020.
