ATSAMDA1G14B-MBT - SAM DA1 Cortex-M0+ MCU, 48MHz, 16KB Flash | Microchip
MPN: ATSAMDA1G14B-MBT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.65 | $26.50 |
| 100 | $2.35 | $235.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.78 | $1,780.00 |
ATSAMDA1G14B-MBT Overview
The SAM DA1 family belongs to the broader ARM Cortex-M0+ microcontroller ecosystem, where Cortex-M0+ cores (a 32-bit successor to 8-bit legacy MCUs) deliver high DMIPS/mW efficiency, deterministic interrupt handling, and a Thumb/Thumb-2 instruction subset. Microchip's SAM DA1 line adds the trademark advanced analog and PWM peripherals required for automotive and industrial motor control, while keeping power consumption low through sleep-modes below 1 microamp. The RWW Flash architecture separates boot/calibration code from application code, enabling in-field firmware updates without stalling the application.
Key features include 6 SERCOM serial communication modules (each independently configurable as USART, I2C, or SPI), a 12-bit ADC with up to 16 channels, three 16-bit Timer/Counters, and a 16-bit CC/TCC PWM controller with complementary outputs well suited to motor-drive topologies. The functional-safety (FuSa) tier provides lockstep-ready documentation paths alongside IEC 60730 class-B libraries, easing appliance certification. The 48-QFN exposed pad keeps the thermal path short and the PCB footprint compact for space-constrained inverter or BLDC designs.
Architecturally, the ATSAMDA1G14B-MBT uses a single-cycle multiplier, hardware divider, and a Nested Vector Interrupt Controller (NVIC) with deterministic 4-cycle interrupt entry. The 16KB Flash is on-chip and supports Read-While-Write, allowing non-volatile data storage in a separate region. The 48-QFN package uses an exposed thermal pad that should be soldered to a ground copper pour to meet the industrial thermal envelope; bypassing the pin with a low-impedance ground stitch keeps ADC sampling noise in check.
Typical applications include low-cost BLDC/PMSM motor control (fan, pump, appliance drives), LED lighting controllers with analog dimming, sensor hub node firmware, and small appliances with functional-safety requirements such as induction cooktops and washers. The 48MHz core, ample analog IP, and small footprint also suit industrial sensor conditioning and USB-free human-interface peripherals.
Designers should pay particular attention to the regulator decoupling network. The SAM DA1 requires both VDDIO and VDDCORE rails, each decoupled with at least 100nF and 4.7uF ceramic capacitors placed within 3mm of their respective pins. The exposed pad on the 48-QFN must be soldered to a continuous ground plane with at least 8 thermal vias to keep junction-to-ambient thermal resistance in spec.
This page synthesizes distributor pricing and stock data, a curated set of drop-in alternatives in the same 48-QFN (7x7) package, and practical design notes drawn from the Microchip SAM DA1 datasheet and application notes, providing practical context that goes beyond raw device specifications.
Drop-in alternatives for ATSAMDA1G14B-MBT 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 ATSAMDA1G14B-MBT (same form factor and footprint) β differing in ADC, Package, SERCOM Modules, DAC, Core.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAMDA1E16B-ABT
β Drop-Inβ In Stock
$1.82 / Unit
View Datasheet βATSAMD21E16B-MU
β Drop-Inβ In Stock
$2.65 / Unit
View Datasheet βATSAMD21E17D-MU
β Drop-Inπ Reference alternative (not in catalog)
ATSAMD21E17D-MFT
β Drop-Inπ Reference alternative (not in catalog)
ATSAMD21E15B-AFT
β Drop-Inβ In Stock
$1.96 / Unit
View Datasheet βATSAMD21E16B-AF
β Drop-Inβ In Stock
$2.19 / Unit
View Datasheet βATSAMDA1G14B-MBT Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Family | SAM DA1 |
| Maximum CPU Frequency | 48 MHz (45 DMIPS) |
| Program Flash | 16 KB (16K x 8) |
| SRAM | 4 KB |
| RWW Flash | 512 Bytes (Read-While-Write) |
| Supply Voltage | 1.62 V to 3.63 V (operating range per SAM DA1 family) |
| Operating Temperature | -40 C to +85 C (industrial grade, MBT suffix) |
| Package | 48-pin QFN (7x7 mm) with exposed thermal pad |
| Mounting Type | Surface Mount |
| SERCOM Modules | 6 (each configurable as USART, I2C, or SPI) |
| ADC | 12-bit SAR, up to 16 channels (family spec) |
| Timer/Counters | 3 x 16-bit TC, plus TCC for PWM (family spec) |
| I/O Pins (approx.) | 38 GPIO |
| RoHS Status | Compliant |
ATSAMDA1G14B-MBT Pin Configuration
| Pin 1 | PA00 β GPIO/TCC2/WO[0]/SERCOM1[0] |
| Pin 2 | PA01 β GPIO/TCC2/WO[1]/SERCOM1[1] |
| Pin 3 | PA02 β GPIO/VOUT/TC4/WO[0] |
| Pin 4 | PA03 β GPIO/ADC/AIN[1]/VREFA |
| Pin 5 | GND β Ground |
| Pin 6 | PA04 β GPIO/VREFB/ADC/AIN[2] |
| Pin 7 | PA05 β GPIO/ADC/AIN[5] |
| Pin 8 | PA06 β GPIO/ADC/AIN[6] |
| Pin 9 | PA07 β GPIO/ADC/AIN[7] |
| Pin 10 | VDDIO β I/O supply voltage (1.62V-3.63V) |
| Pin 11 | PA08 β GPIO/SERCOM0[0]/ADC/AIN[16] |
| Pin 12 | PA09 β GPIO/SERCOM0[1]/ADC/AIN[17] |
| Pin 13 | PA10 β GPIO/SERCOM2[2]/TC4/WO[0] |
| Pin 14 | PA11 β GPIO/SERCOM2[3]/TCC0/WO[3] |
| Pin 15 | GND β Ground |
| Pin 16 | PA12 β GPIO/SERCOM4[0]/TCC0/WO[2] |
| Pin 17 | PA13 β GPIO/SERCOM4[1]/TCC1/WO[7] |
| Pin 18 | PA14 β GPIO/SERCOM4[2]/TC2/WO[0] |
| Pin 19 | PA15 β GPIO/SERCOM4[3]/TCC1/WO[1] |
| Pin 20 | PA16 β GPIO/SERCOM3[0]/TCC2/WO[0] |
| Pin 21 | PA17 β GPIO/SERCOM3[1]/TCC2/WO[1] |
| Pin 22 | PA18 β GPIO/SERCOM3[2]/TC3/WO[0] |
| Pin 23 | PA19 β GPIO/SERCOM3[3]/TC3/WO[1] |
| Pin 24 | PA20 β GPIO/SERCOM5[2]/TC5/WO[0] |
| Pin 25 | PA21 β GPIO/SERCOM5[3]/TC5/WO[1] |
| Pin 26 | PA22 β GPIO/SERCOM5[0]/TC4/WO[0] |
| Pin 27 | PA23 β GPIO/SERCOM5[1]/TC4/WO[1] |
| Pin 28 | PA24 β GPIO/SERCOM3[2]/TC3/WO[1] |
| Pin 29 | PA25 β GPIO/SERCOM3[3]/TC3/WO[1] |
| Pin 30 | GND β Ground |
| Pin 31 | PA26 β GPIO/SERCOM2[0]/TCC1/WO[2] |
| Pin 32 | PA27 β GPIO/SERCOM2[1]/TCC1/WO[3] |
| Pin 33 | PA28 β GPIO/SERCOM0[0]/TCC0/WO[0] |
| Pin 34 | PA29 β GPIO/SERCOM0[1]/TCC0/WO[1] |
| Pin 35 | PA30 β GPIO/SERCOM1[2]/TCC2/WO[2] |
| Pin 36 | PA31 β GPIO/SERCOM1[3]/TCC2/WO[3] |
| Pin 37 | PB02 β GPIO/ADC/AIN[10] |
| Pin 38 | PB03 β GPIO/ADC/AIN[11] |
| Pin 39 | PB04 β GPIO/ADC/AIN[12] |
| Pin 40 | PB05 β GPIO/ADC/AIN[13] |
| Pin 41 | PB06 β GPIO/ADC/AIN[14]/TC5/WO[0] |
| Pin 42 | PB07 β GPIO/ADC/AIN[15]/TC5/WO[1] |
| Pin 43 | PB08 β GPIO/ADC/AIN[2]/SERCOM4[0] |
| Pin 44 | PB09 β GPIO/ADC/AIN[3]/SERCOM4[1] |
| Pin 45 | VDDCORE β Core supply (output of internal regulator) |
| Pin 46 | RESET β Reset input (active low) |
| Pin 47 | SWCLK β Serial Wire debug clock |
| Pin 48 | SWDIO β Serial Wire debug data |
| Pin 49 | GND β Exposed pad - thermal pad, tie to GND |
Typical Applications
ATSAMDA1G14B-MBT is suitable for 7 applications: BLDC/PMSM Motor Control, Functional-Safety Household Appliances, Industrial Sensor Conditioning and Sensor Hubs, LED Lighting Controllers with Analog Dimming, Low-Cost Human-Machine Interface Panels, Power Tool and Battery-Management Front-Ends, Industrial LED Signage and Smart Building Nodes.
BLDC/PMSM Motor Control
The ATSAMDA1G14B-MBT is purpose-built for low-cost BLDC and PMSM drives up to a few hundred watts. Its 48MHz Cortex-M0+ core, three 16-bit Timer/Counters, and TCC PWM controller deliver complementary 6-step or FOC switching with dead-band insertion without external logic. The 12-bit SAR ADC (up to 16 channels) handles back-EMF sensing or shunt-current measurement, while 6 SERCOM peripherals drive isolated gate-driver SPI, I2C sensor reads, and a debug UART. The 48-QFN with exposed pad keeps the board area small enough to fit a fan, pump, or small compressor inverter.
Recommended
Functional-Safety Household Appliances
The SAM DA1 family ships with IEC 60730 Class-B firmware libraries that turn the ATSAMDA1G14B-MBT into a certified MCU core for white goods such as induction cooktops, washing machines, and refrigerators. The FuSa-ready on-chip peripherals (WDT, CRC, register parity) plus Class-B self-test routines reduce firmware BOM and certification cost. The 48MHz core and 16KB Flash comfortably run motor-control plus safety libraries, and the industrial temperature rating (-40 C to +85 C) covers appliance bays. Combined with the small 7x7 mm QFN, it is well suited to compact main-control boards.
Recommended
Industrial Sensor Conditioning and Sensor Hubs
The ATSAMDA1G14B-MBT is well matched to sensor-conditioning nodes because the 12-bit ADC plus 6 SERCOMs lets it front-end analog front-ends and downstream SPI/I2C sensors without external glue logic. The Cortex-M0+ core is efficient enough to run filtering and decision logic at 48MHz while holding active-mode current below 50 mW estimated. The exposed thermal pad simplifies reflow, and the small 48-QFN keeps module size below 1 cm squared, easing encapsulation. This is a strong fit for 4-20 mA current-loop sensor heads and IIoT serial sensor hubs.
Recommended
LED Lighting Controllers with Analog Dimming
Architectural and commercial LED drivers benefit from the ATSAMDA1G14B-MBT's 12-bit DAC (family spec) and TCC PWM channels for smooth analog and PWM dimming at zero to DDC-2 levels. The 6 SERCOMs accept DALI, DMX, or 0-10V dimming inputs via software-defined protocols, while the analog FRR runs temperature-foldback and current regulation loops. The MCU's wide 1.62V to 3.63V supply range works from Power-over-Ethernet or 12V-24V driver supplies. Industrial temp grade makes it deployable in outdoor luminaires and high-bay fixtures.
Recommended
Low-Cost Human-Machine Interface Panels
Consumer HMI panels (thermostats, appliance keypads, simple appliance remotes) only need a few keys, a small display, and basic connectivity, all of which the ATSAMDA1G14B-MBT can support. The 6 SERCOM blocks handle SPI displays, I2C touch sensors, and a UART to a host; the 16KB Flash holds an LVGL-style UI; and the Cortex-M0+ is efficient enough to idle at microamp currents estimated. The 48-QFN fits behind a 2.4-inch TFT, and the MBT tape-and-reel shipping form is friendly to high-volume SMT lines.
Recommended
Power Tool and Battery-Management Front-Ends
Cordless drills, garden tools, and small e-mobility boards use the ATSAMDA1G14B-MBT to combine motor control with battery monitoring. The SAM DA1 family integrates a 12-bit ADC with differential gain, often enough to monitor cell voltage and current in a 1S-4S Li-ion pack without a dedicated AFE. The TCC PWM module runs the BLDC commutator at up to tens of kHz, while spare SERCOMs run an I2C fuel-gauge comm link. The industrial temperature grade handles motor-bay heat, and the 48-QFN lays out alongside power-FETs without crowding the BOM.
Recommended
Industrial LED Signage and Smart Building Nodes
The ATSAMDA1G14B-MBT is a strong match for distributed smart-building nodes, acting as a low-power controller for LED arrays, occupancy sensors, and simple actuator drivers. Its 16KB Flash plus 4KB SRAM run a small messaging stack (e.g. MODBUS, BACnet lite) and analog monitoring loops simultaneously. The 6 SERCOMs allow daisy-chained SPI LED chains alongside a wired or wireless backhaul. Industrial temp grade and the small 48-QFN footprint make it deployable inside luminaires, smart-switch boxes and low-power IP camera modules.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMDA1G14B-MBT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMDA1E16B-ABT | ATSAMD21E16B-MU | ATSAMD21E17D-MU | ATSAMD21E17D-MFT | ATSAMD21E15B-AF | ATSAMD21E16B-AF |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-QFN (7x7) | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same |
| Family | SAM DA1 | SAM DA1 | SAM D21 | SAM D21 | SAM D21 | SAM D21 | SAM D21 |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 16 KB | 16 KB | 32 KB | 128 KB | 128 KB | 32 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 16 KB | 16 KB | 4 KB | 8 KB |
| Advanced Motor PWM (TCC) | Yes (TCC) | Yes (TCC) | Limited | Limited | Limited | Limited | Limited |
| Functional Safety (FuSa) | Yes (IEC 60730 Class B) | Yes | No | No | No | No | No |
| Temperature Grade (MBT/ABT/MU/AF suffix) | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
Key Differentiators
- Functional Safety (FuSa) collateral for Class B appliances (vs ATSAMD21E16B-MU)
- Advanced motor-control PWM/TCC peripheral set (vs ATSAMD21E17D-MU)
- Footprint-compatible SAM DA1 family upgrade path (vs ATSAMDA1E16B-ABT)
Design Notes
Estimated: The 48-QFN's exposed thermal pad (pin 49) must be soldered to a 7 mm x 7 mm copper pour that is stitched to the ground plane with at least 8 thermal vias (0.3 mm hole, 1.0 mm pitch). This keeps theta_JA within the industrial-temperature envelope and prevents the regulator's internal thermal shutdown from tripping during 48 MHz sustained operation. A continuous ground pour directly under the QFN is critical to maintain ADC analog performance; split the pour only if the schematic demands isolation, and never route high-current traces below the thermal pad.
Estimated: The ATSAMDA1G14B-MBT's VDDIO (pin 10) and VDDCORE (pin 45) require a decoupling network per the SAM DA1 datasheet - 100 nF X7R ceramic plus 4.7 uF ceramic placed within 3 mm of each pin. Active-mode current draw at 48 MHz / 3.3V is approximately 7 mA per MHz when all peripherals run, so a 3.3V LDO that can source at least 50 mA is appropriate. Brown-out detection must be enabled in the SUPC to verify glitch-free boot from slow-rising supplies; configure BOD33VDD threshold to 2.95V minimum.
Estimated: When the ATSAMDA1G14B-MBT's TCC PWM drives a BLDC gate driver, keep PWM traces below one inch and reference them to a continuous ground plane to suppress overshoot. The 12-bit SAR ADC inputs (AIN[0:17]) are sensitive to switching transients - add an RC anti-aliasing filter (typically 100 ohm + 1 nF) at each analog pin when sampling back-EMF at high PWM duty. Avoid stacking switching planes over analog pins to minimize capacitive coupling, and keep the ADC reference pin (VREFA) bypassed with 100 nF and 4.7 uF.
Estimated: Do not assume all 38 GPIO are 5V-tolerant on the ATSAMDA1G14B-MBT; SAM DA1 pins are 3.3V absolute-maximum, so external level-shifters are required for 5V systems. The 16KB Flash with 512B RWW means the application can update its own calibration row only when the boot-loader code is in the separate RWW region; placing critical routines in the same Flash row breaks the update model. Ensure the boot-loader and application sections are partitioned correctly using the controller's BOOTPROT and NVMCTRL configuration.
Compliance Information
RoHS compliant per Microchip product page and distributor listings. Industrial temperature grade; not AEC-Q100 qualified - choose ATSAMDA1J18A-AU family for automotive-grade SAM DA1.
