ATSAML10D14A-MF - 32MHz Cortex-M23 MCU 16KB Flash | Microchip
MPN: ATSAML10D14A-MF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
ATSAML10D14A-MF Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (SRAM), and integrated peripherals. Within the broader taxonomy, the ATSAML10D14A-MF sits in the ultra-low-power MCU category, which targets battery-operated and energy-harvesting applications. ARM Cortex-M23 cores specifically use the Armv8-M architecture with TrustZone-M security extensions (note: TrustZone is enabled on the SAM L11 family, while the SAM L10 omits TrustZone for lower cost and power). The SAM L10/L11 families represent Microchip's lowest-power general-purpose 32-bit MCU platform.
Key features include an enhanced Peripheral Touch Controller (PTC) supporting hardware-based capacitive touch sensing, advanced analog peripherals (12-bit ADC, 10-bit DAC, operational amplifiers, and analog comparators), SERCOM serial communication interfaces, and an ISO7816 smart card interface. The 24-VQFN package offers a compact 4x4 mm footprint suitable for space-constrained PCB designs.
Architecturally, the device uses a single-cycle hardware multiplier, MPU for memory protection, and Microchip's proprietary picoPower technology that enables deep-sleep retention modes with sub-microamp standby current. Security features include CRC, true random number generator, and secure boot (without TrustZone).
Typical applications include IoT sensor nodes, wearable health monitors, smart home devices, battery-powered industrial sensors, secure access control (without TrustZone), and touch-based human-machine interfaces. The combination of low power, integrated touch, and analog peripherals makes it particularly suited for always-on edge devices.
When designing with this part, ensure your PCB layout provides adequate thermal dissipation even though the device is low-power. Use the SERCOM modules (each reconfigurable for I2C/SPI/UART) to maximize pin utilization. Decoupling capacitors (100 nF + 1 uF) should be placed within 3 mm of the VDD pins.
This page synthesizes distributor pricing, same-family variants, and practical design notes that complement the manufacturer datasheet for accelerated component selection.
Drop-in alternatives for ATSAML10D14A-MF 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 ATSAML10D14A-MF (same form factor and footprint) β differing in ADC, Package, SRAM, Active Mode Current, Sleep Mode Current.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAML10D15A-MF
β Drop-Inβ In Stock
$1.52 / Unit
View Datasheet βATSAML10D16A-MF
β Drop-Inπ Reference alternative (not in catalog)
ATSAML11D14A-MU
β Drop-Inβ In Stock
$1.91 / Unit
View Datasheet βATSAMD10D14A-MF
β Drop-Inπ Reference alternative (not in catalog)
ATSAML10D14A-MF Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M23 (Armv8-M baseline) |
| Maximum Clock Frequency | 32 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| SRAM | 4 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Active Mode Current | < 25 uA/MHz |
| Sleep Mode Current | < 100 nA |
| Package | 24-VQFN (4x4 mm) with exposed pad |
| Operating Temperature Range | -40 C to +125 C |
| I/O Pins | 17 (approx.) |
| ADC | 12-bit, up to 5 channels |
| DAC | 10-bit, 1 channel |
| Analog Comparators | Yes |
| Operational Amplifiers | Yes (integrated) |
| Touch Controller | Peripheral Touch Controller (PTC) |
| Serial Communication | SERCOM (configurable as I2C/SPI/UART) |
| Smart Card Interface | ISO7816 |
| TrustZone-M | Not present (SAM L11 adds TrustZone) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ATSAML10D14A-MF Pin Configuration
| Pin 1 | PA00 β General purpose I/O / ADC input |
| Pin 2 | PA01 β General purpose I/O / ADC input |
| Pin 3 | PA02 β General purpose I/O / ADC / PTC |
| Pin 4 | PA03 β General purpose I/O / ADC / PTC |
| Pin 5 | GND β Ground |
| Pin 6 | VDD β Power supply (1.62 V to 3.63 V) |
| Pin 7 | PA04 β General purpose I/O / SERCOM |
| Pin 8 | PA05 β General purpose I/O / SERCOM |
| Pin 9 | PA06 β General purpose I/O / SERCOM / PTC |
| Pin 10 | PA07 β General purpose I/O / SERCOM / PTC |
| Pin 11 | PA08 β General purpose I/O / SERCOM |
| Pin 12 | PA09 β General purpose I/O / SERCOM |
| Pin 13 | PA10 β General purpose I/O / SERCOM / PTC |
| Pin 14 | PA11 β General purpose I/O / SERCOM / PTC |
| Pin 15 | GND β Ground |
| Pin 16 | VDD β Power supply (1.62 V to 3.63 V) |
| Pin 17 | PA14 β General purpose I/O / PTC |
| Pin 18 | PA15 β General purpose I/O / PTC |
| Pin 19 | PA16 β General purpose I/O / SERCOM / PTC |
| Pin 20 | PA17 β General purpose I/O / SERCOM / PTC |
| Pin 21 | PA18 β General purpose I/O / SERCOM / PTC |
| Pin 22 | PA19 β General purpose I/O / SERCOM / PTC |
| Pin 23 | RESET β Reset input (active-low) |
| Pin 24 | SWDIO β Serial Wire Debug I/O |
Typical Applications
ATSAML10D14A-MF is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Wearable Health Monitors, Capacitive Touch HMI, Smart Card and Secure Access, Industrial Sensor Transmitters, Smart Home Edge Devices.
Battery-Powered IoT Sensor Nodes
The ATSAML10D14A-MF is engineered for battery-powered IoT sensor nodes that spend most of their life in sleep. Its <100 nA deep-sleep current (per Microchip SAM L10 datasheet) and <25 uA/MHz active draw allow multi-year coin-cell operation with periodic sensor reads. The 32 MHz Cortex-M23 core processes sensor data in microseconds, after which the MCU returns to sleep. Integrated SERCOM ports reconfigure as I2C/SPI/UART to interface temperature, humidity, or motion sensors without external glue logic. The 16 KB Flash fits small LoRaWAN MAC stacks or proprietary protocols. Compared with a discrete RTC + sensor arrangement, this single-chip solution reduces BOM by 3-5 components and shrinks the PCB footprint below 10x10 mm.
Recommended
Wearable Health Monitors
For wearable fitness bands and continuous-health monitors, the ATSAML10D14A-MF offers the picoPower active/sleep profile needed for week-long battery life. The integrated 12-bit ADC samples heart-rate or SpO2 photodiode signals, while the on-chip op-amp conditions the photoplethysmography (PPG) signal without external active components. Its 24-VQFN 4x4 mm footprint fits wristbands and patches. Hardware Peripheral Touch Controller (PTC) enables capacitive touch buttons on the device enclosure. The Cortex-M23's single-cycle multiplier accelerates DSP tasks like heart-rate variability FFT in real time. The 4 KB SRAM buffers several seconds of biosignal data before BLE transmission.
Recommended
Capacitive Touch HMI
The ATSAML10D14A-MF integrates Microchip's enhanced Peripheral Touch Controller (PTC), supporting hardware-driven capacitive touch sensing on up to 8 channels without CPU intervention. This enables water-tolerant sliders, buttons, and proximity sensors in appliances, white goods, and consumer electronics. The MCU's deep sleep (<100 nA) keeps touch wake-up latency below 100 microseconds while consuming less than a coin-cell battery over a year of standby. The integrated analog op-amps and comparators provide signal conditioning for self-cap and mutual-cap electrode networks. With 17 GPIO available and SERCOM ports for display or backlight control, the part is a complete touch HMI solution.
Recommended
Smart Card and Secure Access
The ATSAML10D14A-MF includes a hardware ISO7816 smart card interface, enabling direct connection to contact smart cards without external level translators. This makes it ideal for secure door access terminals, payment readers, and identification/authentication modules. The integrated true random number generator (TRNG) and CRC engine support secure boot and message authentication. While the SAM L10 omits TrustZone-M (present on L11), it still provides sufficient security for non-classified access control. Active mode current below 25 uA/MHz allows operation from a USB or PoE-powered host without dedicated power management. The 32 MHz CPU handles asymmetric crypto in software for elliptic-curve operations.
Recommended
Industrial Sensor Transmitters
Industrial 4-20 mA loop-powered sensor transmitters benefit from the ATSAML10D14A-MF's wide operating voltage (1.62 V to 3.63 V) and low active current. The on-chip 12-bit ADC digitizes bridge sensor or RTD signals with the integrated op-amp providing gain. The Cortex-M23 runs linearization algorithms in real time, then drives a current-loop DAC or PWM output. Sleep current below 100 nA means the transmitter can be loop-powered continuously without draining the loop current budget. The -40 C to +125 C operating temperature range supports deployment in outdoor enclosures and process-control cabinets. Hardware SERCOM ports connect to HART modems or wireless add-on modules.
Recommended
Smart Home Edge Devices
Smart-home end nodes such as battery-powered door/window sensors, leak detectors, and remote control buttons all rely on the ATSAML10D14A-MF's picoPower profile. The Cortex-M23 + 16 KB Flash runs Zigbee or Thread MAC/PHY coordination logic, with the device spending >99% of its life in deep sleep. The integrated PTC supports touch buttons on the device exterior, eliminating mechanical switches that wear out. With 17 GPIO, designers can connect multiple sensor inputs (reed switch, PIR, temperature) without external I/O expanders. Active current below 25 uA/MHz ensures that even with daily activation cycles, a CR2032 cell lasts 3-5 years.
Recommended
Recommended Products Summary
Engineering reference data for ATSAML10D14A-MF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAML10D15A-MF | ATSAML10D16A-MF | ATSAML11D14A-MU | ATSAMD10D14A-MF |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 24-VQFN (4x4 mm) | 24-VQFN (4x4 mm) | 24-VQFN (4x4 mm) | 24-VQFN (same family) | 24-VQFN (4x4 mm) |
| Core | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 (TrustZone-M) | ARM Cortex-M0+ |
| Max Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 48 MHz |
| Flash | 16 KB | 24 KB | 32 KB | 16 KB | 16 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Active Current | <25 uA/MHz | <25 uA/MHz | <25 uA/MHz | <25 uA/MHz | ~50 uA/MHz (typ) |
| Sleep Current | <100 nA | <100 nA | <100 nA | <100 nA | ~2 uA (typ) |
| TrustZone-M | No | No | No | Yes | No |
Key Differentiators
- Lowest sleep current in its class (vs ATSAMD10D14A-MF)
- Cortex-M23 with TrustZone-M ready ecosystem (vs ATSAMD10D14A-MF)
- Compact 4x4 mm VQFN with full SAM L10 peripheral set (vs ATSAML11D14A-MU)
Design Notes
Estimated: at 32 MHz active and 3.3 V supply, the ATSAML10D14A-MF core draws approximately 25 uA/MHz * 32 MHz = 800 uA. Add 50-100 uA for analog peripherals during conversion. Use a 1 uF bulk + 100 nF ceramic decoupling pair within 3 mm of each VDD pin. For sleep-mode retention below 100 nA, ensure no floating inputs above VDD + 0.3 V and disable unused peripherals via the CLKCTRL registers before entering STANDBY.
The 24-VQFN package has an exposed thermal pad that MUST be soldered to a ground copper pour for both thermal dissipation and electrical ground reference. Provide at least 8 thermal vias in a 3x3 grid under the pad. Route SERCOM signals on inner layers to reduce crosstalk with the PTC touch channels. Place the 32.768 kHz crystal within 5 mm of the XIN/XOUT pins if used for RTC; add 12 pF load capacitors to GND.
Do not assume TrustZone-M is present on the SAM L10 - it is only on the SAM L11 family. Failing to disable unused SERCOM modules before sleep will increase quiescent current by 50-200 uA per port. The Cortex-M23 requires Armv8-M toolchain (ARM Compiler 6, GCC 9+); legacy Cortex-M0 toolchains may produce incorrect code. Always assert the RESET pin during power ramp until VDD is stable for at least 1 ms.
Compliance Information
RoHS and REACH compliant per Microchip product page and DigiKey listing. Not AEC-Q100 qualified (industrial grade -40 C to +125 C). Halogen-free and lead-free packaging.
