ATSAMD10D14A-SSNT - 48MHz Cortex-M0+ MCU 16KB Flash | Microchip
MPN: ATSAMD10D14A-SSNT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.95 | $19.50 |
| 100 | $1.74 | $174.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.36 | $1,360.00 |
ATSAMD10D14A-SSNT Overview
What is a Cortex-M0+ microcontroller? A microcontroller (MCU) is a single-chip computer integrating a CPU core, program memory, data RAM, and peripherals. The Cortex-M0+ is ARM's smallest, most energy-efficient application processor, designed for deterministic embedded control in cost- and power-sensitive products. Within the broader product taxonomy, the ATSAMD10D14A sits in the hierarchy: ARM Cortex-M0+ MCU -> 32-bit microcontroller -> embedded processor -> semiconductor IC. SAM D10D devices reach 2.46 CoreMark/MHz, enabling responsive control loops at very low active current.
Key features include the Cortex-M0+ core with single-cycle I/O access, 16 KB flash and 4 KB SRAM, a 12-channel 350 kSps 12-bit SAR ADC, two I2C and two SPI (SERCOM) peripherals, up to six UART-capable SERCOM channels, full-speed USB device support on related variants, and an Event System for inter-peripheral signalling without CPU wake-ups. The 20-pin SOIC package exposes 14 general-purpose I/O pins and supports capacitive touch via the Peripheral Touch Controller (PTC).
The ATSAMD10D14A integrates Microchip's proprietary SERCOM architecture, where each of six SERCOM slots can be independently configured as I2C, SPI, or UART, allowing designers to map the exact peripheral mix their application needs. The 12-bit ADC delivers up to 350 kSps with hardware averaging and oversampling, while the integrated voltage regulator, brown-out detector, and PLL provide a stable 48 MHz system clock from the internal 8 MHz oscillator.
Typical applications include home automation endpoints, low-cost consumer electronics, smart metering nodes, industrial sensor transmitters, and battery-powered IoT devices where the small 20-pin SOIC and wide 1.6 V to 3.6 V supply range enable direct lithium-cell or 3.3 V system-bus operation.
Designers should pay particular attention to the decoupling network - Microchip recommends at least one 100 nF X7R ceramic on each VDD pin and a bulk 4.7 uF on the main rail - and should plan the SWD footprint even in production boards to keep firmware updates possible.
This page consolidates current distributor pricing, pin-compatible drop-in alternatives in the SOIC-20 footprint, and design notes not always present on the manufacturer product page.
Drop-in alternatives for ATSAMD10D14A-SSNT β 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 ATSAMD10D14A-SSNT (same form factor and footprint) β differing in Package, ADC, RoHS Status, Core, Core Architecture.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAMD10D14A-SSUT
β Drop-Inπ Reference alternative (not in catalog)
ATSAMD10D13A-SSNT
β Drop-Inπ Reference alternative (not in catalog)
ATSAMD11D14A-SSNT
β Drop-Inβ In Stock
$0.99 / Unit
View Datasheet βATSAMD10D14A-SSNF
β Drop-Inπ Reference alternative (not in catalog)
ATSAMD10D14A-MNT
β Drop-Inβ In Stock
$1.42 / Unit
View Datasheet βATSAMD10D14A-SSNT Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Frequency | 48 MHz |
| CoreMark/MHz | 2.46 |
| Program Flash Memory | 16 KB (16K x 8) |
| SRAM | 4 KB |
| Supply Voltage (VDD) | 1.6 V to 3.6 V |
| Operating Temperature | -40C to +105C |
| Package | 20-pin SOIC (300 mil) |
| GPIO Pins | 14 (max, package-dependent) |
| ADC | 12-bit SAR, up to 350 kSps, up to 12 channels |
| SERCOM Modules | 6 (configurable as I2C / SPI / UART) |
| Timer / Counter | 16-bit TCC and TC peripherals |
| PTC (Touch) | Peripheral Touch Controller supported |
| Debug Interface | Serial Wire Debug (SWD), 2-wire |
| RoHS Status | Compliant (per Microchip product page) |
| MSL Level | 1 (per SOIC handling guidelines) |
ATSAMD10D14A-SSNT Pin Configuration
| Pin 1 | VDD β Main digital supply input (1.6 V to 3.6 V) |
| Pin 2 | VDDIO β I/O supply; tie to VDD |
| Pin 3 | GND β Ground |
| Pin 4 | PA00 β General-purpose I/O / SERCOM alternate |
| Pin 5 | PA01 β General-purpose I/O / SERCOM alternate |
| Pin 6 | PA02 β General-purpose I/O / ADC AIN0 |
| Pin 7 | PA03 β General-purpose I/O / ADC AIN1 / VREF |
| Pin 8 | PA04 β General-purpose I/O / ADC AIN2 |
| Pin 9 | PA05 β General-purpose I/O / ADC AIN3 |
| Pin 10 | PA06 β General-purpose I/O (default RESET function on fuses) |
| Pin 11 | PA07 β General-purpose I/O / SERCOM alternate |
| Pin 12 | PA08 β General-purpose I/O / SERCOM I2C |
| Pin 13 | PA09 β General-purpose I/O / SERCOM I2C |
| Pin 14 | PA10 β General-purpose I/O / SERCOM alternate |
| Pin 15 | PA11 β General-purpose I/O / SERCOM alternate |
| Pin 16 | PA14 β General-purpose I/O / SERCOM alternate |
| Pin 17 | PA15 β General-purpose I/O / SERCOM alternate |
| Pin 18 | PA16 β General-purpose I/O / SERCOM I2C |
| Pin 19 | PA17 β General-purpose I/O / SERCOM I2C |
| Pin 20 | PA22 β General-purpose I/O / SWDIO (debug) |
Typical Applications
ATSAMD10D14A-SSNT is suitable for 6 applications: Home Automation Endpoints, Smart Metering Nodes, Industrial Sensor Transmitters, Battery-Powered IoT Devices, Consumer Electronics Accessories, Capacitive Touch User Interfaces.
Home Automation Endpoints
The ATSAMD10D14A-SSNT fits home-automation endpoints such as smart switches, door sensors, and BLE-to-Zigbee bridges because of its 1.6-3.6 V supply window that accepts 2x AA or 1S Li-ion directly, and its 48 MHz Cortex-M0+ core that delivers 2.46 CoreMark/MHz for parsing wireless stacks. With six SERCOM channels the chip can simultaneously drive an I2C sensor, an SPI EEPROM, and a UART radio without glue logic. The 12-bit ADC at up to 350 kSps handles analog sensor conditioning, while the Peripheral Touch Controller enables capacitive button or slider interfaces typical of wall-mounted controls.
Recommended
Smart Metering Nodes
Utility metering nodes benefit from the ATSAMD10D14A-SSNT's wide operating temperature range (-40C to +105C) and low active current that suits battery-backed or energy-harvesting meters. The 12-bit SAR ADC can sample voltage and current channels for basic Class 1 metering accuracy, while the 16 KB flash accommodates metering protocol stacks. The Peripheral Touch Controller supports tamper-detection buttons, and the SOIC-20 package simplifies in-field replacement by utility crews. The Event System offloads sensor-triggered ADC sequencing from the CPU, lowering average power.
Recommended
Industrial Sensor Transmitters
For 4-20 mA loop-powered or RS-485 sensor transmitters, the ATSAMD10D14A-SSNT provides enough CPU headroom for linearization, while the 1.6-3.6 V supply supports direct 3.3 V operation from an isolated DC/DC. Six configurable SERCOM channels allow concurrent I2C sensor interfacing, SPI flash, and UART/RS-485 link. The 14 GPIO of the SOIC-20 package drive status LEDs, keypad inputs, and configuration switches. Industrial -40C to +105C qualification matches most factory-floor enclosure temperatures, reducing BOM cost versus -40C to +125C parts.
Recommended
Battery-Powered IoT Devices
IoT sensor nodes that sleep most of the time benefit from the ATSAMD10D14A-SSNT's low-power modes and fast wake-up from the Event System, allowing duty-cycled ADC and GPIO interrupts without CPU intervention. The 16 KB flash holds LoRaWAN or Matter device firmware comfortably, and 4 KB SRAM supports typical stack and buffer needs. Wide 1.6-3.6 V supply lets a single 1S Li-ion or 2x AA cell power the board without boost converters, raising overall system efficiency by 5-10 percent and extending battery life.
Recommended
Consumer Electronics Accessories
The ATSAMD10D14A-SSNT is well suited for low-cost consumer accessories such as wireless remote controls, gaming peripherals, and fitness wearables because of its compact 20-pin SOIC footprint, 1.6-3.6 V supply, and integrated Peripheral Touch Controller for capacitive input. The 48 MHz core comfortably handles USB HID, BLE controller interface, or custom wireless protocols. The 16 KB flash is enough for application firmware plus a small bootloader, and the 4 KB SRAM supports simultaneous sensor data buffering and radio packetization.
Recommended
Capacitive Touch User Interfaces
Products needing reliable capacitive buttons or sliders - kitchen appliances, audio panels, or industrial control surfaces - can use the Peripheral Touch Controller in the ATSAMD10D14A-SSNT to scan up to 12 self-capacitance or mutual-capacitance channels without external components. The 48 MHz Cortex-M0+ core runs the Microchip QTouch library for robust noise-immune touch decoding, while six SERCOMs manage I2C expanders or SPI displays around the touch hub. The 1.6-3.6 V range directly supports 3.3 V systems without an LDO.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMD10D14A-SSNT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMD10D14A-SSUT | ATSAMD10D13A-SSNT | ATSAMD11D14A-SSNT | ATSAMD10D14A-SSNF | ATSAMD10D14A-MNT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC | 20-SOIC (same) | 20-SOIC (same) | 20-SOIC (same) | 20-SOIC (same) | 20-SOIC (same) |
| Core | ARM Cortex-M0+ @ 48 MHz | ARM Cortex-M0+ @ 48 MHz | ARM Cortex-M0+ @ 48 MHz | ARM Cortex-M0+ @ 48 MHz | ARM Cortex-M0+ @ 48 MHz | ARM Cortex-M0+ @ 48 MHz |
| Flash | 16 KB | 16 KB | 8 KB (-50%) | 16 KB | 16 KB | 16 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Supply 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 +125C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
| USB Support | No | No | No | Yes (USB 2.0 FS device) | No | No |
| Approx. 1k Price (USD) | $1.36 | ~$1.45 | ~$1.25 | ~$1.55 | ~$1.36 | ~$1.40 |
Key Differentiators
- Smallest 20-SOIC Cortex-M0+ MCU with 16 KB flash in the SAM D10D family (vs ATSAMD10D13A-SSNT)
- Industrial +105C temperature range in SOIC-20 vs VQFN siblings (vs ATSAMD10D14A-MUT)
- No on-chip USB simplifies BOM and EMI (vs ATSAMD11D14A-SSNT)
Design Notes
Place one 100 nF X7R 0402 ceramic decoupling capacitor as close as possible to each VDD pin (pin 1) and VDDIO (pin 2), plus a 4.7 uF X5R bulk capacitor on the main supply trace. The SAM D10D internal LDO drives the digital core, so VDD ripple above 50 mV peak-to-peak can degrade ADC accuracy and brown-out behavior. For battery applications, add a 10 ohm ferrite bead on the supply rail if the source is a switching regulator.
Keep the 32.768 kHz crystal traces short and symmetric, with the load capacitors (typically 12 pF) placed within 5 mm of the XIN/XOUT pins. Route the SWDIO (PA22) and SWCLK traces together with a ground guard on both sides to avoid debugger noise coupling. The SOIC-20 has no exposed pad, so no thermal via stitching is needed, but the ground lead should still be tied to a low-impedance ground plane for return-current continuity.
Do not leave the PA06 pin floating if it is used as the default RESET input - configure the FUSES to repurpose PA06 as GPIO only after disabling the reset function. The Peripheral Touch Controller requires software calibration on first use; calling the QTouch library initialization before scanning channels prevents false touches. When migrating from ATSAMD10D13A-SSNT to ATSAMD10D14A-SSNT, verify that linker scripts are updated to use 16 KB flash regions instead of 8 KB.
Compliance Information
RoHS and REACH compliance per Microchip product page material declaration. The -SSNT suffix indicates a Pb-free SOIC package rated -40C to +105C. Not AEC-Q100 qualified - choose ATSAMD10D14A-SSUT if -40C to +125C is required, but this part is still not automotive-grade.
