ATSAMD10C14A-SSUT - 32-bit Cortex-M0+ MCU, 16KB Flash, 14-SOIC | Microchip
MPN: ATSAMD10C14A-SSUT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.79 | $179.00 |
| 500 | $1.52 | $760.00 |
| 1,000 | $1.31 | $1,310.00 |
| 3,000 | $1.12 | $3,360.00 |
ATSAMD10C14A-SSUT Overview
What is an ARM Cortex-M0+ microcontroller? A Cortex-M0+ microcontroller is a 32-bit RISC processor core licensed by Arm Holdings, designed for energy-efficient embedded applications. Within the broader taxonomy, the ATSAMD10C14A sits inside Microcontrollers -> Integrated Circuits -> Semiconductors, and uses the Arm Cortex-M0+ instruction set as part of the Cortex-M family. The M0+ profile is the smallest and lowest-power Cortex-M core, optimized for deterministic interrupt response and minimal silicon area.
Key features of the ATSAMD10C14A-SSUT include an in-system programmable Flash, a six-channel DMA controller, a six-channel Event System, a programmable interrupt controller, a 32-bit RTC, two 16-bit Timer/Counters (TC) and one 24-bit Timer/Counter for Control (TCC), plus a full-speed USB 2.0 device interface and up to 22 programmable I/O pins depending on package. The serial peripherals cover SERCOM (I2C, SPI, UART) channels and an I2S interface, providing flexible connectivity for sensors and actuators.
Architecturally, the ATSAMD10C14A-SSUT uses a single-cycle hardware multiplier, single-cycle I/O port access, and a low-power SleepWalking peripheral event system that allows the CPU to remain in sleep until a peripheral requires attention. The integrated full-speed USB 2.0 transceiver (with on-chip pull-up and pull-down resistors) eliminates the need for an external PHY for HID, CDC, or vendor-class USB device applications.
Typical applications include home automation nodes, low-power consumer electronics, smart metering, industrial sensor interfacing, USB human-interface devices (HID) such as keyboards and mice, and battery-powered IoT endpoints. The wide 1.6-3.6 V supply range supports direct Li-ion / 2xAA battery operation without additional regulation.
When designing with this part, note that the 14-SOIC package has limited I/O count compared to larger QFN variants; verify pin assignments carefully against the application requirements. The internal 48 MHz RC oscillator plus PLL provides flexible clocking, but a 32.768 kHz crystal is recommended for RTC accuracy.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet to accelerate BOM decisions.
Drop-in alternatives for ATSAMD10C14A-SSUT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAMD10C14A-SSUT (same form factor and footprint) — differing in Package, Operating Temperature Range, ADC, Communication Interfaces, Connectivity.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAMD10C13A-SSUT
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →ATSAMD11C14A-SSUT
✅ Drop-In✓ In Stock
$1.8 / Unit
View Datasheet →ATSAMD10D14A-SSUT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ATSAMD10C14A-SSUT Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Frequency | 48 MHz |
| CoreMark/MHz | 2.46 |
| Program Memory (Flash) | 16 KB (16K x 8) |
| SRAM | 4 KB |
| Supply Voltage Range | 1.6 V to 3.6 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Type | 14-SOIC (150 mil) |
| Pin Count | 14 |
| Mounting Type | Surface Mount |
| DMA Channels | 6 |
| Event System Channels | 6 |
| Programmable I/O Pins | Up to 22 (package-dependent) |
| 16-bit Timer/Counters (TC) | 2 |
| 24-bit Timer/Counter for Control (TCC) | 1 |
| USB Interface | USB 2.0 Full-Speed Device |
| RTC | 32-bit Real-Time Clock |
| RoHS Status | Compliant |
| Lead-Free | Yes |
ATSAMD10C14A-SSUT Pin Configuration
| Pin 1 | PA03 — GPIO / SERCOM pad |
| Pin 2 | PA04 — GPIO / SERCOM pad |
| Pin 3 | GND — Ground |
| Pin 4 | VDD — Power supply (1.6 V - 3.6 V) |
| Pin 5 | PA05 — GPIO / SERCOM pad |
| Pin 6 | PA06 — GPIO / SERCOM pad |
| Pin 7 | PA07 — GPIO / SERCOM pad |
| Pin 8 | PA08 — GPIO / SERCOM pad |
| Pin 9 | PA09 — GPIO / SERCOM pad |
| Pin 10 | PA10 — GPIO / SERCOM pad |
| Pin 11 | PA11 — GPIO / SERCOM pad (D-) |
| Pin 12 | PA14 — GPIO / SERCOM pad (D+) |
| Pin 13 | PA17 — GPIO / SERCOM pad |
| Pin 14 | PA18 — GPIO / SERCOM pad / XIN |
Typical Applications
ATSAMD10C14A-SSUT is suitable for 7 applications: USB Human Interface Device (HID), Home Automation Sensor Nodes, Smart Metering Edge Devices, Industrial Sensor Interface Modules, Low-Cost Consumer Electronics, Battery-Powered Wearable Accessories, Educational and Maker Platforms.
USB Human Interface Device (HID)
The ATSAMD10C14A-SSUT is an excellent fit for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. Its integrated USB 2.0 Full-Speed device transceiver with on-chip pull-up/pull-down resistors eliminates the need for an external PHY, shrinking the BOM by $0.20-0.40. The 48 MHz Cortex-M0+ core runs HID class drivers and Consumer/Control report descriptors without performance headroom issues, while 4 KB SRAM handles report buffers. Place a 1.5 kΩ pull-up on D+ (or D- for low-speed) per USB 2.0 spec; the device supports bus-powered or self-powered topologies through its VBUS sense pin. Compared to discrete MCU + FTDI-style bridges, this single-chip solution reduces PCB area by roughly 40%.
Recommended
Home Automation Sensor Nodes
For battery-powered home automation nodes (temperature, motion, contact sensors), the ATSAMD10C14A-SSUT delivers the right blend of low power and connectivity. Its SleepWalking event system wakes the CPU only when a SERCOM-completed transfer or a configured TC compare event occurs, keeping idle current in the microamp range and enabling multi-year coin-cell operation. The 1.6-3.6 V supply aligns directly with 2xAA alkaline or single-cell Li-FeS2 chemistries without a boost converter. The 14-SOIC footprint is hand-solderable, simplifying prototype rework. The two 16-bit TC plus one 24-bit TCC provide ample PWM and capture channels for sensor sampling and LED driving, while the 32-bit RTC handles time-stamping for offline logging.
Recommended
Smart Metering Edge Devices
Smart electricity, water, and gas meters benefit from the ATSAMD10C14A-SSUT's combination of low power, accurate RTC, and flexible serial peripherals. The integrated 32-bit RTC with 32.768 kHz crystal support delivers timekeeping accuracy better than ±5 ppm, suitable for time-of-use billing. The six-channel DMA controller moves ADC samples from the internal 12-bit ADC to RAM without CPU intervention, freeing the core for protocol stack processing on SERCOM (UART/SPI/I2C) interfaces. The 14-SOIC package's industrial temperature range (-40 to +85 °C) is rated for outdoor meter enclosures, and its 1.6-3.6 V supply accommodates single-cell Li-SOCl2 backup batteries. Compared to 8-bit metering MCUs, the 32-bit core handles DLMS/COSEM encryption with margin.
Recommended
Industrial Sensor Interface Modules
Industrial 4-20 mA loop-powered sensor heads, RTD conditioners, and bridge-sensor front-ends often require a small, deterministic MCU. The ATSAMD10C14A-SSUT fits with its deterministic Cortex-M0+ interrupt latency (typically 15 clock cycles) and the 24-bit TCC for precise PWM-driven excitation of bridge sensors. The six-channel DMA handles continuous ADC-to-RAM streaming while the CPU runs calibration math, and SERCOM instances can be flexibly mapped to I2C for EEPROM, SPI for ADC, or UART for diagnostics. The 1.6-3.6 V supply is compatible with 3.3 V industrial rails. Compared to larger QFN SAM D20/D21 parts, the 14-SOIC is hand-reworkable in the field - a key advantage for installed-base retrofits.
Recommended
Low-Cost Consumer Electronics
Toys, remote controls, appliance UI boards, and small consumer gadgets benefit from the ATSAMD10C14A-SSUT's sub-$1.50 volume pricing and tiny 14-SOIC footprint. The Cortex-M0+ core runs capacitive-touch libraries and simple BLE-beacon-style soft stacks through the SERCOM-based UART interface. The 16 KB Flash is sufficient for state machines plus a USB bootloader, supporting field firmware updates via the integrated USB Full-Speed device. Designers can leverage Atmel Studio / Microchip Studio and the SAME54/SAMD10-compatible ASF/START code base to cut development time. The 14-SOIC's 1.27 mm pitch is friendly to low-cost 2-layer FR-4 boards, an advantage over 0.5 mm-pitch QFN alternatives.
Recommended
Battery-Powered Wearable Accessories
Wearable accessories such as fitness bands, smart watches (sub-display logic), and BLE beacons favor the ATSAMD10C14A-SSUT's low-power profile and small PCB footprint. Sleep currents in the single-digit microamp range combined with 4 KB SRAM retention allow weeks-to-months standby on a 100 mAh Li-Po cell. The 24-bit TCC can drive NeoPixel/WS2812-style LED strips directly via DMA-fed PWM, eliminating the timing-critical bit-banging overhead typical of 8-bit MCUs. The 1.6-3.6 V supply aligns with Li-Po / Li-ion cells without an LDO. Compared to Cortex-M4 alternatives, the M0+ keeps dynamic power at roughly half for the same workload, extending wearable battery life.
Recommended
Educational and Maker Platforms
The ATSAMD10C14A-SSUT's Arduino-compatible tooling and Microchip/Atmel ecosystem make it a popular choice for maker boards, educational kits, and STEM microcontroller trainers. Its 48 MHz Cortex-M0+ is fast enough to run MicroPython subsets via the in-system programmable Flash, while the integrated USB Full-Speed device enables drag-and-drop UF2 bootloaders without an external programmer. The 14-SOIC package is breadboard-friendly via adapter boards, and the SAME54/SAMD10-compatible HAL library lowers the barrier for new developers. Compared to more exotic Cortex-M33 parts, this device offers a balance of cost, familiarity, and feature set ideal for the educational tier.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMD10C14A-SSUT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMD10C13A-SSUT | ATSAMD11C14A-SSUT | ATSAMD10D14A-SSUT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 16 KB | 8 KB (-50%) | 16 KB | 16 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB |
| Supply Voltage Range | 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 |
| 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 |
| Crypto Accelerator | No | No | Yes | No |
Key Differentiators
- Integrated USB Full-Speed transceiver with on-chip pull-up/pull-down (vs ATSAMD10C13A-SSUT)
- Adds hardware crypto accelerator for AES-256 and SHA-256 (vs ATSAMD11C14A-SSUT)
- Mature SAM D10 ecosystem with Microchip Studio and START code configurator (vs ATSAMD10D14A-SSUT)
Design Notes
The ATSAMD10C14A-SSUT operates from 1.6 V to 3.6 V on VDD. For USB Full-Speed device operation, VDD must be at least 3.0 V to meet USB signal-amplitude requirements; below 3.0 V the USB driver may violate the VOH 2.8 V minimum. Add a 1 µF + 100 nF decoupling pair as close to the VDD and GND pins as possible, plus a 4.7 µF bulk capacitor for inrush during USB attach. Estimated: at VDD=3.3 V and 48 MHz active, the core current is approximately 7 mA per the SAM D10 family datasheet; standby sleep current is in the low microamp range.
Place the 32.768 kHz crystal within 5 mm of XIN/XOUT (PA18/PA19) and route traces over a continuous ground pour to minimize stray capacitance. The 14-SOIC 150-mil package has a 1.27 mm pitch - use 0.3 mm trace/space rules and avoid running noisy digital lines under the crystal. The exposed die-attach pad is not present on this SOIC, so no thermal pad stitching is required, simplifying layout versus QFN variants of the SAM D10 family.
Do not assume SERCOM pin mapping is fixed; the SERCOM multiplexers must be configured via the PORT and PMUX registers before peripheral use - a common bug is to enable a SERCOM before assigning its pads, which locks the peripheral until reset. For USB, configure the D+ pull-up via the SYSCTRL or USB.PADCAL registers; external 1.5 kΩ pull-ups are not required but may be used if board-level ESD protection demands them. The NVMCTRL lock bits should be cleared before in-system programming via SWD; locked devices require a full chip erase through Atmel Studio / Microchip Studio.
The USB D+/D- lines on the ATSAMD10C14A-SSUT are 90 Ω differential impedance-controlled; route them over a continuous ground plane with 0.8-1.0 mm trace width and 0.15 mm spacing on a 4-layer stack-up. Place the 27 Ω series damping resistors within 5 mm of the MCU pads to suppress reflections at full-speed (12 Mbps) edges. Keep total D+/D- trace length under 25 mm to avoid ISI; matched-length routing is recommended if longer runs are unavoidable.
Compliance Information
RoHS and lead-free compliance per Microchip product page for ATSAMD10C14. Not AEC-Q100 qualified - choose ATSAMC20/SAM Dx1 automotive variants for vehicle applications. Halogen-free status not explicitly stated in the verified data and marked as [DATA_NEEDED].
