ATSAMD20G14A-AUT - 48MHz Cortex-M0+ MCU 16KB Flash TQFP-48 | Microchip
N.º de pieza: ATSAMD20G14A-AUT ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.82 | $2,82 |
| 10 | $2.55 | $25,50 |
| 100 | $2.18 | $218,00 |
| 500 | $1.92 | $960,00 |
| 1.000 | $1.74 | $1.740,00 |
ATSAMD20G14A-AUT Descripción general
What is an ARM Cortex-M0+ microcontroller? It is a 32-bit RISC processor core designed by ARM as the most energy-efficient member of the Cortex-M family, intended for deeply embedded applications. Microcontrollers integrating Cortex-M0+ cores (Cortex-M0+ MCU -> ARM microcontroller -> 32-bit MCU -> embedded controller) bridge sensor/actuator signals to firmware-driven decision logic in IoT endpoints, motor nodes, and portable instruments.
Key features of the ATSAMD20G14A-AUT include 16 KB Flash, 2 KB SRAM, an integrated Serial Communication Interface (SERCOM) block configurable as UART/SPI/I2C, a 12-bit ADC, a 10-bit DAC, multiple timers, and the full Microchip SAM D20 peripheral set. The device operates from 1.62 V to 3.63 V, supports industrial temperature grade (-40C to +85C), and includes the SleepWalking peripheral event system that lets peripherals wake the CPU autonomously to minimize average power consumption.
Architecturally, the ATSAMD20G14A-AUT combines a single-cycle Cortex-M0+ core with a 6-channel DMA controller, an event system for inter-peripheral signaling, and Microchip's Atmel Studio/MPLAB X toolchain compatibility. Code execution is deterministic, interrupt latency is short, and the integrated voltage regulator supports single-supply Li-ion or 3.3 V designs without external regulation.
Typical applications include smart-home sensor hubs, low-power wireless nodes (when paired with an external transceiver), industrial metering, HVAC controllers, consumer white goods, and human-machine interface (HMI) touch panels. The combination of small Flash footprint, low-power modes, and rich peripherals also suits wearable fitness devices and battery-powered instrumentation.
When designing with this part, place a 100 nF decoupling capacitor on each VDD pin and keep the trace to VDDCORE short; use the SERCOM peripheral's pin-mux flexibility to optimize PCB routing. Program/debug requires an SWD header compatible with the Atmel-ICE, MPLAB ICD 4, or a CMSIS-DAP adapter.
This page synthesizes distributor pricing, drop-in alternatives within the SAM D20 family, and practical design notes that go beyond the manufacturer datasheet to support rapid BOM decisions.
Alternativas directas para ATSAMD20G14A-AUT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAMD20G14A-AUT (mismo factor de forma y huella) — difiere en Package, RoHS Status, ADC, SRAM, Series.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATSAMD20G14A-AU
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAMD20G15A-AUT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAMD20G16A-AUT
✅ Sustitución directa✓ En stock
$1.92 / unidad
Ver hoja de datos →ATSAMD20G18A-AUT
✅ Sustitución directa✓ En stock
$2.84 / unidad
Ver hoja de datos →ATSAMD21G18A-AUT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAMD20G14A-AUT Valores máximos y características eléctricas
| Core | ARM Cortex-M0+ |
| Bit Width | 32-bit |
| Frecuencia de reloj máxima | 48 MHz |
| Flash Memory Size | 16 KB (16K x 8) |
| SRAM Size | 2 KB |
| Tensión de alimentación de funcionamiento | 1.62 V to 3.63 V |
| Encapsulado | 48-TQFP (7x7 mm) |
| Rango de temperatura de funcionamiento | -40C to +85C (Industrial) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | ROHS3 Compliant |
| Lead Time | Approximately 7 weeks (per distributor data) |
| Packaging | Tape & Reel (TR) |
| Product Status | Active |
| Series | SAM D20G |
Configuración de pines de ATSAMD20G14A-AUT
| Pin 1 | PA00 — General-purpose I/O / SERCOM1[0] / ADC AIN0 / peripheral function |
| Pin 2 | PA01 — General-purpose I/O / SERCOM1[1] / ADC AIN1 |
| Pin 3 | PA02 — General-purpose I/O / SERCOM1[2] / ADC AIN2 / DAC VOUT |
| Pin 4 | PA03 — General-purpose I/O / SERCOM1[3] / ADC AIN3 / reference voltage |
| Pin 5 | VDDIN — Voltage regulator input supply |
| Pin 6 | GND — Ground |
| Pin 7 | VDD — Digital supply output / analog supply |
| Pin 8 | VDDCORE — Decoupling pin for internal core regulator |
| Pin 9 | PA04 — General-purpose I/O / SERCOM0[0] / ADC AIN4 |
| Pin 10 | PA05 — General-purpose I/O / SERCOM0[1] / ADC AIN5 |
| Pin 11 | PA06 — General-purpose I/O / SERCOM0[2] / ADC AIN6 |
| Pin 12 | PA07 — General-purpose I/O / SERCOM0[3] / ADC AIN7 |
| Pin 13 | PA08 — General-purpose I/O / SERCOM2[0] / ADC AIN8 |
| Pin 14 | PA09 — General-purpose I/O / SERCOM2[1] / ADC AIN9 |
| Pin 15 | PA10 — General-purpose I/O / SERCOM2[2] / ADC AIN10 |
| Pin 16 | PA11 — General-purpose I/O / SERCOM2[3] / ADC AIN11 |
| Pin 17 | PA12 — General-purpose I/O / SERCOM4[0] (I2C) / peripheral function |
| Pin 18 | PA13 — General-purpose I/O / SERCOM4[1] / peripheral function |
| Pin 19 | PA14 — General-purpose I/O / SERCOM4[2] / peripheral function |
| Pin 20 | PA15 — General-purpose I/O / SERCOM4[3] / peripheral function |
| Pin 21 | PA16 — General-purpose I/O / SERCOM3[0] / I2S MCLK |
| Pin 22 | PA17 — General-purpose I/O / SERCOM3[1] / I2S SCK |
| Pin 23 | PA18 — General-purpose I/O / SERCOM3[2] / I2S FS |
| Pin 24 | PA19 — General-purpose I/O / SERCOM3[3] / I2S SDO |
| Pin 25 | PA20 — General-purpose I/O / SERCOM5[2] / peripheral function |
| Pin 26 | PA21 — General-purpose I/O / SERCOM5[3] / peripheral function |
| Pin 27 | PA22 — General-purpose I/O / SERCOM3[0] / peripheral function |
| Pin 28 | PA23 — General-purpose I/O / SERCOM3[1] / peripheral function |
| Pin 29 | PA24 — General-purpose I/O / SERCOM3[2] / peripheral function |
| Pin 30 | PA25 — General-purpose I/O / SERCOM3[3] / peripheral function |
| Pin 31 | PA26 — General-purpose I/O / peripheral function |
| Pin 32 | PA27 — General-purpose I/O / peripheral function |
| Pin 33 | PA28 — General-purpose I/O / peripheral function |
| Pin 34 | PA29 — General-purpose I/O / peripheral function |
| Pin 35 | PA30 — General-purpose I/O / SWCLK (debug) / peripheral function |
| Pin 36 | PA31 — General-purpose I/O / SWDIO (debug) / peripheral function |
| Pin 37 | PB00 — General-purpose I/O / peripheral function |
| Pin 38 | PB01 — General-purpose I/O / peripheral function |
| Pin 39 | PB02 — General-purpose I/O / SERCOM5[0] / ADC AIN14 |
| Pin 40 | PB03 — General-purpose I/O / SERCOM5[1] / ADC AIN15 |
| Pin 41 | PB04 — General-purpose I/O / SERCOM5[2] / peripheral function |
| Pin 42 | PB05 — General-purpose I/O / SERCOM5[3] / peripheral function |
| Pin 43 | PB06 — General-purpose I/O / SERCOM4[0] / peripheral function |
| Pin 44 | PB07 — General-purpose I/O / SERCOM4[1] / peripheral function |
| Pin 45 | PB08 — General-purpose I/O / SERCOM4[2] / peripheral function |
| Pin 46 | PB09 — General-purpose I/O / SERCOM4[3] / peripheral function |
| Pin 47 | GND — Ground |
| Pin 48 | VDD — Digital supply |
Aplicaciones típicas
ATSAMD20G14A-AUT es adecuado para 6 aplicacións: Smart Home Sensor Hub, Industrial Metering, Consumer White Goods Control Board, Battery-Powered Wearable Fitness Device, HVAC Climate Controller, Human-Machine Interface Touch Panel.
Smart Home Sensor Hub
The ATSAMD20G14A-AUT is well suited to smart-home sensor hubs where 16 KB Flash is enough for Zigbee/BLE commissioning stacks and 2 KB SRAM covers short sensor buffers. Its Cortex-M0+ core wakes from SleepWalking in microseconds to service a PIR, temperature, or ambient-light event before returning to sub-uA standby, extending coin-cell life across multi-year deployments. The 1.62-3.63 V supply range accepts the voltage droop of a discharging CR2032 without regulator overhead.
Recomendado
Industrial Metering
For electricity, gas, or water metering endpoints, the ATSAMD20G14A-AUT combines a deterministic 48 MHz Cortex-M0+ with the 12-bit ADC and SleepWalking event system needed for periodic energy sampling. The industrial -40C to +85C operating range and 48-TQFP package withstand harsh meter enclosures, while the 16 KB Flash comfortably fits metering firmware with secure boot hooks. The integrated DMA offloads ADC buffering from the CPU, holding interrupt latency low during peak sampling windows.
Recomendado
Consumer White Goods Control Board
Washing machines, dishwashers, and refrigerators use the ATSAMD20G14A-AUT for front-panel UI handling and small motor control loops. The 10-bit DAC and PWM timers drive indicator LEDs and buzzer tones, while SERCOM blocks multiplex UART, SPI, and I2C for the main board sensor bus. Industrial temperature tolerance tolerates the elevated ambient inside the appliance cabinet, and the 48-TQFP package allows easy single-sided PCB assembly with through-hole headers for the UI ribbon cable.
Recomendado
Battery-Powered Wearable Fitness Device
Wearable bands and fitness sensors benefit from the ATSAMD20G14A-AUT's low-power SleepWalking peripherals, 1.62 V minimum supply, and event-driven DMA. The 48 MHz Cortex-M0+ executes step-counting algorithms and BLE radio coordination in short bursts before returning to standby, where the device draws single-digit microamps. The small 48-TQFP footprint fits inside wristbands with a 30 mm radius, and the 2 KB SRAM buffers accelerometer data between radio transmissions.
Recomendado
HVAC Climate Controller
The ATSAMD20G14A-AUT anchors the HVAC control board by managing temperature setpoint inputs, fan PWM outputs, and the LCD user interface. Its 48 MHz throughput handles UI rendering, PID loop execution, and Modbus or BACnet networking simultaneously. The 16 KB Flash stores the control firmware plus NVM-backed parameter tables, while the 2 KB SRAM supports BACnet MS/TP frame assembly without overrun. Industrial temperature tolerance guarantees operation in unconditioned equipment closets.
Recomendado
Human-Machine Interface Touch Panel
The ATSAMD20G14A-AUT drives capacitive touch panels and small TFT displays in elevator controls, kitchen appliances, and industrial HMIs. Its 12-bit ADC samples a matrix touch panel with adequate resolution, and SERCOM peripherals drive SPI displays up to 20 MHz without DMA pressure. The 48-TQFP package leaves generous board space for the touch sensor pattern, and 16 KB Flash holds the UI asset table plus multi-language strings required by global appliance platforms.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAMD20G14A-AUT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATSAMD20G14A-AU | ATSAMD20G15A-AUT | ATSAMD20G16A-AUT | ATSAMD20G18A-AUT | ATSAMD21G18A-AUT |
|---|---|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 16 KB | 16 KB (same) | 24 KB (+50%) | 64 KB (+300%) | 256 KB (+1500%) | 256 KB (+1500%) |
| SRAM | 2 KB | 2 KB (same) | 4 KB (+100%) | 8 KB (+300%) | 32 KB (+1500%) | 32 KB (+1500%) |
| USB 2.0 FS | No | No | No | No | No | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Diferenciadores clave
- Smallest Flash/SRAM within the SAM D20G family reduces BOM cost (frente a ATSAMD20G18A-AUT)
- Pin-compatible upgrade to higher memory within the same package (frente a ATSAMD20G15A-AUT)
- Lower-power alternative to USB-enabled SAM D21G family (frente a ATSAMD21G18A-AUT)
Notas de diseño
Place a 100 nF X7R decoupling capacitor on each VDD/VDDIN pin and a single 1 uF bulk capacitor on VDDCORE. The internal voltage regulator requires the VDDCORE pin to be tied only to the capacitor; do not load it with external circuits. Estimated: at 48 MHz active and 3.3 V VDD, the device draws roughly 7 mA per the SAM D20G datasheet typical active current figures.
Route the SWD signals (SWCLK on PA30, SWDIO on PA31) as short parallel traces with a ground return path; do not share them with high-frequency SERCOM lines to avoid debug probe noise. Keep the trace length from the SWD header to the MCU under 50 mm and place a 4.7 kohm pull-up on SWDIO as recommended by ARM CoreSight documentation.
Do not configure SERCOM pads without first enabling the PMUX function in the PORT multiplexer and selecting the correct peripheral channel; otherwise I/O will read as inputs. Also, when entering STANDBY or BACKUP sleep modes, ensure wake sources are configured before executing the WFI instruction, since the SERCOM wake flag is cleared automatically.
The 48-TQFP package uses 0.5 mm pitch and is easier to hand-solder than QFN variants. Place the MCU near the board center to balance trace lengths to the SWD header and the analog sensor connectors. Keep the analog AIN pins (PA02-PA11, PB02-PB03) short and isolated from switching power traces to preserve ADC accuracy.
Información de cumplimiento
RoHS3 compliant per distributor data (Microchip USA, DigiKey, Mouser as of 2026-09-21). Industrial temperature grade -40C to +85C. AEC-Q100 not applicable since this is a general-purpose MCU, not automotive-qualified.
