ATSAML10D16A-MFT - 32MHz Cortex-M23 MCU 64KB Flash | Microchip
MPN: ATSAML10D16A-MFT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.7 | $1,700.00 |
ATSAML10D16A-MFT Overview
What is a low-power microcontroller? An MCU is a single-chip computer integrating a CPU core, memory, and peripherals; a low-power variant adds aggressive clock gating, multiple sleep modes, and SleepWalking peripherals that wake only specific subsystems. Within the taxonomy, ATSAML10D16A-MFT is a 32-bit microcontroller, then a Cortex-M-class MCU, then a sub-1V active-class low-power MCU used as a power-management IC's companion in always-on systems.
Key features include an enhanced peripheral touch controller (PTC) for capacitive sensing without external components, a 12-bit ADC with up to 12 channels, an on-chip temperature sensor, and an ISO7816 smart-card interface. The device integrates an event system for inter-peripheral signalling without CPU wake-up and supports serial-wire debug. Security includes a unique 128-bit serial number and Microchip's SAM L10 TrustZone-lite tamper detection.
Technical depth: The Cortex-M23 core implements the Armv8-M baseline profile with single-cycle I/O, hardware single-precision multiply, and a 2-stage pipeline. The 24-VQFN exposed pad lowers thermal resistance and enables direct PCB die-attached heat spreading for sustained 32 MHz operation across the -40C to +125C industrial temperature range.
Typical applications include IoT sensor nodes, wearable health monitors, smart-card terminals, low-power wireless HMI touch interfaces, battery-powered industrial gauges, and home automation endpoints. The 100 nA sleep current enables multi-year coin-cell life when the application wakes only briefly to sample.
Design consideration: At 32 MHz with all peripherals active the active current stays below 25 uA/MHz; designers should bias the PTC clock and ADC prescaler to keep the duty cycle low. Decouple VDD and VDDCORE pins with 100 nF X7R close to each pin.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes that streamline the BOM decision beyond what the manufacturer datasheet alone provides.
Drop-in alternatives for ATSAML10D16A-MFT 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 ATSAML10D16A-MFT (same form factor and footprint) β differing in Package, ADC, Core, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAML10D15A-MFT
β Drop-Inπ Reference alternative (not in catalog)
ATSAML10D14A-MF
β Drop-Inβ In Stock
$2.18 / Unit
View Datasheet βATSAML11D16A-MFT
β Drop-Inβ In Stock
$2.51 / Unit
View Datasheet βATSAML11D15A-MFT
β Drop-Inβ In Stock
$2.42 / Unit
View Datasheet βATSAML10E14A-MFT
β Drop-Inπ Reference alternative (not in catalog)
ATSAML10D16A-MFT Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M23 (Armv8-M baseline) |
| Maximum Clock Frequency | 32 MHz |
| Program Memory | 64 KB Flash |
| SRAM | 16 KB |
| Operating Voltage | 1.62 V to 3.63 V |
| Active Mode Current | <25 uA/MHz |
| Sleep Mode Current | <100 nA |
| GPIO Count | 17 (approx.) |
| ADC | 12-bit SAR, up to 12 channels |
| Touch Controller | Enhanced PTC (Peripheral Touch Controller) |
| Smart Card Interface | ISO7816 |
| Communication | SERCOM x4 (configurable UART/SPI/I2C) |
| Operating Temperature | -40C to +125C (industrial) |
| Package | 24-VQFN (4x4 mm) with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ATSAML10D16A-MFT Pin Configuration
| Pin 1 | PA00 β GPIO / SERCOM pad |
| Pin 2 | PA01 β GPIO / SERCOM pad |
| Pin 3 | PA02 β GPIO / ADC AIN[0] |
| Pin 4 | PA03 β GPIO / ADC AIN[1] / VREFA |
| Pin 5 | PA04 β GPIO / ADC AIN[2] |
| Pin 6 | PA05 β GPIO / ADC AIN[3] |
| Pin 7 | PA06 β GPIO / ADC AIN[4] |
| Pin 8 | PA07 β GPIO / ADC AIN[5] |
| Pin 9 | VDDCORE β Internal core voltage decoupling |
| Pin 10 | GND β Ground |
| Pin 11 | VDD β Main power supply |
| Pin 12 | PA08 β GPIO / SERCOM pad |
| Pin 13 | PA09 β GPIO / SERCOM pad |
| Pin 14 | PA10 β GPIO / SERCOM pad |
| Pin 15 | PA11 β GPIO / SERCOM pad |
| Pin 16 | PA14 β GPIO / PTC X line |
| Pin 17 | PA15 β GPIO / PTC Y line |
| Pin 18 | PA16 β GPIO / PTC Y line |
| Pin 19 | PA17 β GPIO / PTC X line |
| Pin 20 | RESET β Reset input, active-low |
| Pin 21 | SWDIO β Serial-wire debug data |
| Pin 22 | SWCLK β Serial-wire debug clock |
| Pin 23 | NC β Not connected (per datasheet) |
| Pin 24 | NC β Not connected (per datasheet) |
Typical Applications
ATSAML10D16A-MFT is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Wearable Health and Fitness Devices, Smart Card and ISO7816 Terminals, Capacitive Touch HMI Panels, Industrial Low-Power Sensor Gauges, Smart Home and Building Automation Endpoints.
Battery-Powered IoT Sensor Nodes
The ATSAML10D16A-MFT's <100 nA deep-sleep current and 25 uA/MHz active consumption make it a primary fit for coin-cell IoT sensors that report temperature, humidity or motion on a duty-cycled schedule. Its 64 KB Flash holds application plus a LoRaWAN or BLE-stack image when paired with an external transceiver, while 16 KB SRAM provides headroom for sensor buffers and TLS handshake frames. The SleepWalking event system lets ADC conversions and PTC scans trigger interrupts without waking the CPU until threshold-crossing events occur, yielding measured average currents below 5 uA in many deployment profiles and extending CR2032 lifetime into the multi-year range.
Recommended
Wearable Health and Fitness Devices
Wearable fitness bands and continuous-health monitors benefit from the ATSAML10D16A-MFT's enhanced peripheral touch controller for capacitive button and slider sensing, plus its 12-bit SAR ADC for heart-rate and SpO2 front-ends. The Cortex-M23 core executes sensor-fusion DSP efficiently at 32 MHz while keeping the active current below 25 uA/MHz, enabling all-day wear with small Li-ion batteries. The 24-VQFN 4x4 mm footprint fits wristband PCBs with the exposed pad spreading heat across the skin-side copper pour for thermal comfort during sustained sampling.
Recommended
Smart Card and ISO7816 Terminals
The ATSAML10D16A-MFT integrates a hardware ISO7816 smart-card interface that handles asynchronous T=0 and T=1 protocols without external transceiver ICs, reducing BOM cost in payment terminals, eID readers and access-control panels. The 32 MHz Cortex-M23 core executes the application-layer cryptographic stack in firmware while the dedicated ISO7816 peripheral manages bit-level card timing. Low sleep current lets unattended terminals stay in field without battery replacement for years, and the 64 KB Flash fits a full EMVCo L1 stack with margin for application customisation.
Recommended
Capacitive Touch HMI Panels
The ATSAML10D16A-MFT's enhanced peripheral touch controller (PTC) supports mutual-capacitance and self-capacitance touch scanning across multiple buttons, sliders and wheels without external components beyond the sensor pattern itself. Hardware-driven scans and wake-on-touch events offload the CPU, allowing the MCU to remain in deep sleep until a user touches the panel. Designers can implement sealed glass-front HMIs for kitchen appliances, industrial controls and smart-home panels where mechanical switches would compromise the IP rating.
Recommended
Industrial Low-Power Sensor Gauges
Industrial pressure, level and flow gauges in remote locations rely on the ATSAML10D16A-MFT's -40C to +125C industrial temperature range and sub-100 nA sleep current for battery operation across multi-year service intervals. The 12-bit ADC with up to 12 channels handles 4-20 mA loop translation and bridge sensor excitation, while the SERCOM ports interface to RS-485 or wireless modules. The 24-VQFN exposed pad improves thermal coupling to the enclosure for stable readings across process temperatures.
Recommended
Smart Home and Building Automation Endpoints
Smart-home endpoints such as battery-powered door/window sensors, leak detectors and room controllers use the ATSAML10D16A-MFT to combine capacitive touch wake-up, environmental sensing and sub-GHz or BLE connectivity with years of battery life. The Cortex-M23 executes Zigbee or Matter-over-Thread stack fragments on the 64 KB Flash, while the event system coordinates ADC, PTC and SERCOM peripherals without CPU intervention. The exposed-pad 24-VQFN package fits coin-cell or 2xAAA enclosures with adequate thermal dissipation for indoor use.
Recommended
Recommended Products Summary
Engineering reference data for ATSAML10D16A-MFT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAML10D15A-MFT | ATSAML10D14A-MF | ATSAML11D16A-MFT | ATSAML11D15A-MFT | ATSAML10E14A-MFT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 24-VQFN (4x4 mm) | 24-VQFN (4x4 mm) - same | 24-VQFN (4x4 mm) - same | 24-VQFN (4x4 mm) - same | 24-VQFN (4x4 mm) - same | 24-VQFN (4x4 mm) - same |
| Core | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 + TrustZone-M | ARM Cortex-M23 + TrustZone-M | ARM Cortex-M23 |
| Max Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash | 64 KB | 32 KB (-50%) | 16 KB (-75%) | 64 KB | 32 KB (-50%) | 16 KB (-75%) |
| SRAM | 16 KB | 16 KB | 8 KB (-50%) | 16 KB | 16 KB | 8 KB (-50%) |
| TrustZone | No | No | No | Yes | Yes | No |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C |
Key Differentiators
- Industry's lowest-power Cortex-M23 MCU (vs ATSAMD10 Cortex-M0+ family)
- Enhanced peripheral touch controller on-chip (vs External AT42QT touch IC solutions)
- Direct SAM L11 upgrade path with TrustZone-M (vs Non-Microchip Cortex-M23 MCUs)
Design Notes
Estimated: at 32 MHz active with all peripherals on, the ATSAML10D16A-MFT draws ~800 uA from a 3.3 V supply; in deep sleep with RTC running, current drops below 100 nA. Designers should duty-cycle the CPU aggressively using the event system and use SERCOM standby to keep I/O wake-up latency under 10 us while preserving sub-uA average draw for coin-cell designs.
Place 100 nF X7R decoupling capacitors within 3 mm of every VDD and VDDCORE pin and connect the QFN exposed pad to a continuous ground copper pour with at least 8 thermal vias to the inner plane. This is mandatory for stable ADC readings and to keep junction temperature within the -40C to +125C industrial range during sustained 32 MHz operation.
Do not omit the 32.768 kHz crystal loading capacitors on XIN32/XOUT32 if the application needs RTC accuracy below 2% - the on-chip load capacitors are not always enabled by default in the MCU start-up code. Also confirm the SWD pins are not repurposed as GPIO in production firmware or debug access will be permanently lost.
Route the PTC touch lines as short, parallel traces with a ground hatch between adjacent channels and keep them away from switching DC-DC nodes by at least 5 mm. Crosstalk from a 2 MHz buck converter can desensitize the PTC and cause false touch detections in capacitive button layouts.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +125C. Not AEC-Q100 qualified - choose ATSAML10D16A-MFT variants in AEC-Q100 screening for automotive deployments.
