ATSAMD11C14A-SSUT - 32-bit ARM Cortex-M0+ MCU 48MHz 16KB Flash | Microchip
MPN: ATSAMD11C14A-SSUT ✓ Hoạt độngATSAMD11C14A-SSUT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (flash), data memory (SRAM), and a rich set of peripheral interfaces. The Cortex-M0+ is the smallest, most energy-efficient ARM core designed for embedded applications, sitting at the bottom of the Cortex-M hierarchy (Cortex-M0/M0+ -> Cortex-M3 -> Cortex-M4 -> Cortex-M7). The SAM D11C series specifically adds native USB 2.0 full-speed and an integrated 48 MHz digital frequency-locked loop (DFLL) on-chip oscillator, which removes the need for an external crystal in USB applications.
Key differentiating features include 16 KB flash with read-while-write support, 4 KB SRAM, up to 12 SERCOM pads that can each be configured as USART, I2C, or SPI, a 12-bit 350 ksps ADC with up to 10 channels, a 10-bit 350 ksps DAC, two analog comparators, two I2S interfaces, and a real-time clock. The device operates from 1.62 V to 3.63 V and is qualified for -40 C to +85 C industrial temperature range.
The ATSAMD11C14A-SSUT's architecture uses a two-bus AHB-Lite matrix with a separate APB bridge, allowing DMA-driven SERCOM, ADC, and DAC operations to occur in parallel with CPU execution. The on-chip DFLL48M locks to the 32.768 kHz crystal reference to derive the 48 MHz USB clock, eliminating the BOM cost of a high-frequency external crystal. The peripheral event system and 6-channel DMA controller further reduce CPU overhead in real-time applications.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), home automation sensor nodes, low-power wireless gateways with USB charging interfaces, consumer toys and wearables with USB-C connectivity, industrial meter reading equipment, and small motor-control daughterboards. The combination of native USB, small footprint, and Cortex-M0+ ecosystem support makes it well suited to volume-cost-sensitive designs that still need modern connectivity.
When designing with this part, plan the PCB layout to keep the USB DP/DM traces length-matched within 4 mm and the 32.768 kHz crystal traces short and guarded. Decouple VDD with at least one 100 nF X7R capacitor placed within 2 mm of the pin, and add a 4.7 uF bulk capacitor for the USB VBUS rail. Program the DFLL before USB enumeration to meet USB 2.0 full-speed jitter specifications.
This page consolidates distributor stock, AEC-Q100 sibling variants, and practical design notes not found in the manufacturer datasheet to accelerate your component selection and PCB bring-up.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD11C14A-SSUT — 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 ATSAMD11C14A-SSUT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature Range, DAC, Core Architecture.
ATSAMD11C14A-SSNT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD11D14A-SSNT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD11C14A-MUT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD11C14A-SSUT Tỷ lệ tối đa & tính chất điện
| Core Processor | ARM Cortex-M0+ |
| Core Size | 32-Bit |
| Maximum Clock Speed | 48 MHz |
| Program Memory Size | 16 KB (16K x 8) FLASH |
| RAM Size | 4 KB |
| Supply Voltage Range | 1.62 V to 3.63 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C |
| Hộp | 14-SOIC (SS) 3.90 mm |
| Number of I/O Pins | 12 |
| ADC | 12-bit, 10 channels, up to 350 ksps |
| DAC | 10-bit, 1 channel, 350 ksps |
| USB | USB 2.0 Full-Speed Device |
| Communication Interfaces | I2C, SPI, UART/USART, USB, I2S |
| Connectivity | I2C, SPI, UART, USB |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Series | SAM D11C |
Cấu hình chân ATSAMD11C14A-SSUT
| Chân 1 | PA02 — GPIO / ADC AIN[0] |
| Chân 2 | PA03 — GPIO / ADC AIN[1] / DAC VOUT |
| Chân 3 | PA04 — GPIO / VBUS sense |
| Chân 4 | GND — Ground |
| Chân 5 | VDD — Digital supply voltage (1.62V - 3.63V) |
| Chân 6 | PA05 — GPIO / ADC AIN[5] |
| Chân 7 | PA06 — GPIO / ADC AIN[6] / SERCOM0 |
| Chân 8 | PA07 — GPIO / SERCOM0 / I2S |
| Chân 9 | PA09 — GPIO / USB DP |
| Chân 10 | PA10 — GPIO / USB DM |
| Chân 11 | PA14 — GPIO / SERCOM2 / SWD clock (SWCLK) |
| Chân 12 | PA15 — GPIO / SERCOM2 / SWD data (SWDIO) |
| Chân 13 | PA16 — GPIO / SERCOM1 / I2S |
| Chân 14 | PA17 — GPIO / SERCOM1 / XIN32 (32.768 kHz crystal in) |
Ứng dụng tiêu biểu
ATSAMD11C14A-SSUT phù hợp cho 6 Áp dụngs: USB HID Peripheral Devices, Home Automation Sensor Nodes, USB Charging-Status Indicators, Consumer Toys and Wearables, Industrial Meter Reading Equipment, Small Motor Control Daughterboards.
USB HID Peripheral Devices
The ATSAMD11C14A-SSUT is well suited to USB Human Interface Device (HID) peripherals such as keyboards, mice, custom HID input devices, and game controllers because its integrated USB 2.0 Full-Speed Device controller eliminates the need for an external USB-to-UART bridge IC. The 16 KB flash comfortably holds HID report descriptors, debounce logic, and CAPS-LOCK/NUMPAD class firmware; the 4 KB SRAM handles HID report buffers and protocol state. The on-chip DFLL48M locks to a 32.768 kHz crystal and provides the 48 MHz USB clock, removing the USD 0.30 external high-frequency crystal. Designers can free additional pins by using the 6-channel DMA to drive USB endpoints without CPU intervention.
Được đề xuất
Home Automation Sensor Nodes
The ATSAMD11C14A-SSUT is appropriate for low-cost home automation sensor nodes (temperature, humidity, contact, motion) that communicate via I2C sensor hubs or simple UART radios. Its 12-bit 350 ksps ADC provides enough resolution for thermistor/photodiode/PIR signal chains, while the 6 SERCOM pads can each be configured as I2C, SPI, or UART, allowing flexible sensor fan-out without an I/O expander. The sub-5 uA STANDBY current with RTC running enables multi-year battery life on 2x AA cells; the Cortex-M0+ wakes in <10 us on RTC compare to take a measurement and transmit. The 14-SOIC package allows hand-solderable prototypes and reduces assembly cost for low-volume SKUs.
Được đề xuất
USB Charging-Status Indicators
The ATSAMD11C14A-SSUT can serve as a USB-C charging-status indicator MCU that drives LEDs based on VBUS voltage, USB PD negotiation result, or battery telemetry from an external fuel gauge. Its 10-bit DAC and PWM channels generate smooth LED fade animations while the USB device stack reports charging current over I2C to a host. The 12-bit ADC monitors VBUS and battery voltage with 1 mV resolution, sufficient for accurate charge-state indication. The 14-SOIC fits behind a USB-C connector in a 25x30 mm enclosure with no additional components beyond a regulator and passives.
Được đề xuất
Consumer Toys and Wearables
The ATSAMD11C14A-SSUT is a strong fit for consumer toys and entry-level wearables where small footprint, low power, and USB charging support are critical. The 14-SOIC is small enough for wearable wristbands and toy controllers while remaining hand-solderable. The Cortex-M0+ runs at <50 uA/MHz active, supporting all-day battery life on 80 mAh Li-Po; the 12-bit ADC handles heart-rate sensor analog front-ends, and the 10-bit DAC drives audio prompts or haptic feedback waveforms. USB device mode enables firmware updates and battery charging through a single USB-C connector.
Được đề xuất
Industrial Meter Reading Equipment
The ATSAMD11C14A-SSUT is appropriate for industrial meter reading peripherals (gas, water, electric meter AMR add-ons, handheld reader probes) that need USB connectivity for data export and a robust industrial temperature range. The -40 C to +85 C operating range and integrated 12-bit ADC measure sensor signals to within 0.1% accuracy; the SERCOM-configurable I2C/SPI interfaces connect to modern metering ICs and EEPROMs. The Cortex-M0+ executes meter protocol stacks (DLMS/COSEM, Modbus RTU) at 48 MHz with deterministic interrupt latency. USB device mode enables handheld reader probes to dump logged data to a laptop without additional bridge ICs.
Được đề xuất
Small Motor Control Daughterboards
The ATSAMD11C14A-SSUT can drive small motor-control daughterboards for fans, pumps, and miniature BLDC motors where its 48 MHz Cortex-M0+ runs simple 6-step or FOC commutation algorithms and its PWM channels drive gate drivers. The 10-bit DAC generates reference waveforms for closed-loop current control, and the on-chip analog comparators provide hardware overcurrent protection with <100 ns response time. The 12-bit ADC samples back-EMF at 350 ksps, sufficient for slow-speed BLDC commutation up to 10,000 RPM. The 14-SOIC footprint mounts on small stepper motor carrier boards.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD11C14A-SSUT — 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-SSNT | ATSAMD11C14A-MUT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SS) 3.90 mm | 20-SOIC (SN) - same SOIC family, larger | 20-SOIC (SN) - same SOIC family, larger | QFN-32 (M) 5x5 mm - different package |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 16 KB | 16 KB | 32 KB (+100%) | 16 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB |
| I/O Pins | 12 | 18 (+50%) | 18 (+50%) | Up to 24 (+100%) |
| USB | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device |
Bảo phân biệt quan trọng
- Smallest SAM D11C package with native USB (vsATSAMD11C14A-SSNT)
- Higher flash option within same pinout family (vsATSAMD11D14A-SSNT)
- QFN package option for space-constrained designs (vsATSAMD11C14A-MUT)
Ghi chú thiết kế
Place the 100 nF VDD decoupling capacitor within 2 mm of pin 5 with a direct via to the ground plane. Add a 4.7 uF bulk capacitor on VBUS to meet USB inrush current requirements per USB 2.0 spec section 7.2.4. Keep the 32.768 kHz crystal traces (PA17/PA18 in larger packages) shorter than 5 mm and surround them with a ground guard ring to minimize jitter on the DFLL48M-derived 48 MHz USB clock.
The USB DP and DM traces (PA09/PA10) must be length-matched within 4 mm and routed over a continuous ground plane with 33 ohm series resistors placed within 6 mm of the MCU pins. Maintain 90 ohm differential impedance if USB 2.0 high-speed certification is ever required (this part is Full-Speed only). Avoid routing digital signals (SERCOM, PWM) across the DP/DM pair to prevent coupling into the eye pattern.
Do not skip the NVM software row configuration - the ATSAMD11C14A-SSUT requires specific fuse settings to enable the USB clock source and lock bits. Program the DFLL48M calibration after every cold boot to meet USB 2.0 full-speed jitter (within +/- 2.5% of nominal). Do not assume the bootloader is present - the standard -SSUT variant has NO factory bootloader; order -SU variant or use SWD to program firmware.
Thông tin tuân thủ
RoHS compliant per Microchip product page; lead-free finish (Matte Tin). Industrial temperature grade -40C to +85C. No AEC-Q100 automotive qualification - for automotive applications use SAM D11C variants with -AUT suffix.
