ATSAMD20J16A-AUT - 48MHz Cortex-M0+ MCU 64KB Flash | Microchip
N.º da peça: ATSAMD20J16A-AUT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.07 | $4,07 |
| 10 | $3.66 | $36,60 |
| 100 | $3.21 | $321,00 |
| 500 | $2.79 | $1.395,00 |
| 1.000 | $2.4 | $2.400,00 |
ATSAMD20J16A-AUT Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and peripheral interfaces such as GPIO, timers, ADC, and communication controllers on one die. The SAM D20 family sits in the broader hierarchy: microcontroller -> embedded processor -> semiconductor device. Within Microchip's lineup it belongs to the SAME (Smart ARM Microcontroller Embedded) series, which also includes the SAM D21, SAM C20, SAM C21, SAM L21 and SAM D10/D11 sub-families.
Key features of the ATSAMD20J16A-AUT include an ARM Cortex-M0+ core running up to 48MHz, the Microchip Event System for low-latency inter-peripheral signalling, a 12-bit 1MSPS ADC with up to 16 analog channels, SERCOM (Serial Communication Interface) modules configurable as UART/SPI/I2C, a full-speed USB 2.0 device controller, and an on-chip 32kHz oscillator plus PLL for system clock. The integrated SleepWalking peripheral allows peripherals to wake the core only when needed.
The Cortex-M0+ core implements the ARMv6-M architecture with single-cycle I/O port access and a 2-stage pipeline, delivering 0.9 DMIPS/MHz while drawing only 9 uA/MHz in active mode. Hardware divide and atomic bit manipulation accelerate bare-metal and RTOS-based firmware, while the single-wire debug interface (SWD) removes the need for a JTAG header in low-pin-count designs.
Typical applications include home automation endpoints, smart metering, IoT sensor nodes, consumer appliances, low-cost HMI panels, and industrial control sub-systems. The wide 1.62V-3.63V supply window lets the device run directly from a single Li-ion cell or a 3.3V regulated rail, simplifying battery-powered designs.
When migrating from AVR to ARM, plan for vector-table setup, ARMv6-M interrupt priorities, and the SERCOM peripheral model rather than AVR USART/TWI registers. Always decouple VDD with a 100 nF X7R ceramic placed within 3 mm of the supply pin and provide a 4.7 uF bulk capacitor on the analog supply rail for ADC accuracy.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone, giving procurement, firmware and hardware engineers a single reference for the ATSAMD20J16A-AUT.
Alternativas drop-in para ATSAMD20J16A-AUT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAMD20J16A-AUT (mesmo formato e footprint) — diferindo em ADC, Package, SRAM, Core Architecture, USB.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAMD20J18A-AUT
✅ Drop-In✓ Em estoque
$2.78 / unidade
Ver ficha técnica →ATSAMD20J15A-AUT
✅ Drop-In✓ Em estoque
$1.85 / unidade
Ver ficha técnica →ATSAMD20J14A-AUT
✅ Drop-In✓ Em estoque
$1.85 / unidade
Ver ficha técnica →ATSAMC20J18A-AUT
✅ Drop-In✓ Em estoque
$3.1 / unidade
Ver ficha técnica →ATSAMC20J16A-AUT
✅ Drop-In✓ Em estoque
$1.82 / unidade
Ver ficha técnica →ATSAML21J16B-AUT
✅ Drop-In✓ Em estoque
$4.25 / unidade
Ver ficha técnica →ATSAMD20J16A-AUT Classificações máximas e características elétricas
| Core Architecture | ARM Cortex-M0+ (ARMv6-M) |
| Core Clock Speed | 48 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| SRAM | 8 KB |
| Supply Voltage (VDD) | 1.62 V to 3.63 V |
| Temperatura de operação | -40 C to +85 C (Industrial) |
| Encapsulamento | 64-pin TQFP with exposed pad (10x10 mm) |
| Tipo de montagem | Surface Mount |
| ADC | 12-bit, up to 1 MSPS |
| Communication Interfaces | SERCOM (UART/SPI/I2C), USB 2.0 Full-Speed Device |
| Timers | TC (16-bit), TCC (24-bit PWM) |
| DMA Channels | 12 channels |
| Debug Interface | SWD (Single-Wire Debug) |
| Nível MSL | MSL3 (per JEDEC J-STD-020) |
| Status RoHS | Compliant |
| Packaging | Tape & Reel (suffix -AUT) |
| Series | SAM D20J |
Configuração de pinos do ATSAMD20J16A-AUT
| Pino 1 | PA00 — GPIO / XIN32 (32.768 kHz crystal input) |
| Pino 2 | PA01 — GPIO / XOUT32 (32.768 kHz crystal output) |
| Pino 3 | PA02 — GPIO / AIN0 (ADC analog input) |
| Pino 4 | PA03 — GPIO / AIN1 / VREFA (ADC reference) |
| Pino 5 | GND — Ground |
| Pino 6 | VDD — Digital supply voltage |
| Pino 7 | VDDANA — Analog supply voltage |
| Pino 8 | PA04 — GPIO / AIN2 |
| Pino 9 | PA05 — GPIO / AIN3 |
| Pino 10 | PA06 — GPIO / AIN4 |
| Pino 11 | PA07 — GPIO / AIN5 |
| Pino 12 | PA08 — GPIO / AIN6 / SERCOM0 PAD0 |
| Pino 13 | PA09 — GPIO / AIN7 / SERCOM0 PAD1 |
| Pino 14 | PA10 — GPIO / AIN8 / SERCOM0 PAD2 |
| Pino 15 | PA11 — GPIO / AIN9 / SERCOM0 PAD3 |
| Pino 16 | PA12 — GPIO / SERCOM2 PAD0 |
| Pino 17 | PA13 — GPIO / SERCOM2 PAD1 |
| Pino 18 | PA14 — GPIO / SERCOM2 PAD2 |
| Pino 19 | PA15 — GPIO / SERCOM2 PAD3 |
| Pino 20 | PA16 — GPIO / SERCOM1 PAD0 / I2S SCK |
| Pino 21 | PA17 — GPIO / SERCOM1 PAD1 / I2S FS |
| Pino 22 | PA18 — GPIO / SERCOM1 PAD2 / I2S MCK |
| Pino 23 | PA19 — GPIO / SERCOM1 PAD3 / I2S SDO |
| Pino 24 | PA20 — GPIO / SERCOM3 PAD0 / I2S SDI |
| Pino 25 | PA21 — GPIO / SERCOM3 PAD1 |
| Pino 26 | PA22 — GPIO / SERCOM3 PAD2 |
| Pino 27 | PA23 — GPIO / SERCOM3 PAD3 / USB D- |
| Pino 28 | PA24 — GPIO / USB D+ |
| Pino 29 | PA25 — GPIO / SERCOM4 PAD0 |
| Pino 30 | PA26 — GPIO / SERCOM4 PAD1 |
| Pino 31 | PA27 — GPIO / SERCOM4 PAD2 |
| Pino 32 | PA28 — GPIO / SERCOM4 PAD3 |
| Pino 33 | PA29 — GPIO / SERCOM5 PAD0 |
| Pino 34 | PA30 — GPIO / SERCOM5 PAD1 / SWCLK |
| Pino 35 | PA31 — GPIO / SERCOM5 PAD2 / SWDIO |
| Pino 36 | PB00 — GPIO |
| Pino 37 | PB01 — GPIO |
| Pino 38 | PB02 — GPIO / SERCOM5 PAD3 |
| Pino 39 | PB03 — GPIO |
| Pino 40 | PB04 — GPIO |
| Pino 41 | PB05 — GPIO |
| Pino 42 | PB06 — GPIO |
| Pino 43 | PB07 — GPIO |
| Pino 44 | PB08 — GPIO |
| Pino 45 | PB09 — GPIO |
| Pino 46 | PB10 — GPIO |
| Pino 47 | PB11 — GPIO |
| Pino 48 | PB12 — GPIO |
| Pino 49 | PB13 — GPIO |
| Pino 50 | PB14 — GPIO |
| Pino 51 | PB15 — GPIO |
| Pino 52 | PB16 — GPIO |
| Pino 53 | PB17 — GPIO |
| Pino 54 | PB18 — GPIO |
| Pino 55 | PB19 — GPIO |
| Pino 56 | PB20 — GPIO |
| Pino 57 | PB21 — GPIO |
| Pino 58 | PB22 — GPIO |
| Pino 59 | PB23 — GPIO |
| Pino 60 | PB24 — GPIO |
| Pino 61 | PB25 — GPIO |
| Pino 62 | PB26 — GPIO |
| Pino 63 | PB27 — GPIO |
| Pino 64 | PB28 — GPIO |
Aplicações típicas
ATSAMD20J16A-AUT é adequado para 6 aplicaçãos: Home Automation Hubs and Sensor Nodes, Smart Metering Endpoints, Consumer Appliance Control Boards, Industrial Sensor Transmitters, USB HID and CDC Devices, Low-Cost HMI Panels and Display Drivers.
Home Automation Hubs and Sensor Nodes
The ATSAMD20J16A-AUT fits home automation hubs and battery-powered sensor nodes thanks to its 48MHz Cortex-M0+ core, 64KB Flash and 1.62V-3.63V supply window. The on-chip SERCOM peripherals can be software-configured as UART, SPI or I2C to interface Zigbee, BLE or LoRa daughter modules, while SleepWalking peripherals wake the CPU only on real events. A 32.768kHz crystal keeps the RTC running in standby, enabling multi-year coin-cell life on door, window and occupancy sensors that report via simple wake-transmit-sleep duty cycles.
Recomendado
Smart Metering Endpoints
The ATSAMD20J16A-AUT serves smart electricity, water and gas meter endpoints where the 12-bit 1MSPS ADC accurately samples current shunts and the 8KB SRAM buffers segmented metering data. Its wide 1.62V-3.63V supply lets the MCU run directly from a 3.6V Li-SOCl2 primary cell with no LDO, reducing quiescent loss. Hardware divide and the Event System let the firmware perform RMS calculations without CPU overhead, while AES via the peripheral library secures wireless M-Bus or wM-Bus telemetry.
Recomendado
Consumer Appliance Control Boards
The ATSAMD20J16A-AUT runs the control board of washing machines, dishwashers, coffee makers and air purifiers by combining capacitive-touch via the Peripheral Touch Controller (PTC), 6 SERCOM channels, and a TCC PWM block for motor and valve control. The 64KB Flash comfortably fits a USB device stack for firmware update via USB-C, while the 64-pin TQFP exposes enough GPIO to drive 7-segment displays and relay arrays. Its -40C to +85C industrial range supports refrigerator and freezer control where condensation is routine.
Recomendado
Industrial Sensor Transmitters
The ATSAMD20J16A-AUT powers 4-20mA loop-powered or RS-485 industrial sensor transmitters where its 1MSPS 12-bit ADC digitizes bridge pressure, RTD temperature or load-cell signals. The 12 DMA channels move ADC data into SRAM without CPU intervention, freeing the Cortex-M0+ core for linearization and HART-style protocol framing. The 1.62V minimum supply allows operation down to 8V loop voltage when paired with a buck-boost front end.
Recomendado
USB HID and CDC Devices
The ATSAMD20J16A-AUT integrates a USB 2.0 Full-Speed Device controller with on-chip transceiver, making it a strong fit for USB HID peripherals such as custom keyboards, foot pedals, control surfaces, and USB-CDC bridges to UART/SPI peripherals. With 64KB Flash the MCU accommodates the USB stack plus vendor firmware, while the 12-channel DMA offloads endpoint traffic from the CPU. The exposed pad on the TQFP-64 package helps dissipate heat during continuous USB enumeration.
Recomendado
Low-Cost HMI Panels and Display Drivers
The ATSAMD20J16A-AUT drives small graphical or character LCD panels in industrial HMIs and white-goods displays. Its 6 SERCOM channels support SPI display interfaces, while the TCC peripheral generates accurate backlight PWM and the PTC handles capacitive touch keys. The 48MHz core runs Microchip's same70 driver port for ST7789 or ILI9341 displays without noticeable frame-rate lag. The exposed-pad TQFP-64 simplifies thermal layout in enclosed panels.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAMD20J16A-AUT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAMD20J18A-AUT | ATSAMD20J15A-AUT | ATSAMD20J14A-AUT | ATSAMC20J16A-AUT | ATSAML21J16B-AUT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) |
| 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 | 64 KB | 256 KB | 32 KB | 16 KB | 64 KB | 64 KB |
| SRAM | 8 KB | 8 KB (32 KB option) | 4 KB | 4 KB | 8 KB | 8 KB |
| Supply Voltage | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V |
| USB | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Host+Device |
| Low-Power Features | SleepWalking, RTC | SleepWalking, RTC | SleepWalking, RTC | SleepWalking, RTC | SleepWalking, RTC | Ultra-low-power, SleepWalking, RTC, <1 uA standby |
| Price (qty 100, USD, as of 2026-09-21) | 3.21 | 3.60 | 3.00 | 2.85 | 3.30 | 3.55 |
Principais diferenciais
- Larger Flash headroom within same package (vs ATSAMD20J15A-AUT)
- Lower unit cost at identical pinout (vs ATSAMD20J18A-AUT)
- Drop-in upgrade path to ultra-low-power variant (vs ATSAML21J16B-AUT)
Notas de projeto
Place a 100 nF X7R decoupling capacitor within 3 mm of every VDD/VDDANA pin, plus a single 4.7 uF bulk capacitor on VDDANA to stabilize the ADC reference. The wide 1.62V-3.63V supply window allows direct Li-ion battery connection, but for ADC accuracy keep the analog rail above 2.4V to maintain 12-bit linearity. Avoid routing high-speed digital signals across the analog ground island to minimize digital-noise coupling into the ADC.
The 64-TQFP package exposes a thermal pad (EP) on the underside that must be soldered to a copper pour on the PCB for reliable operation at industrial temperatures -40C to +85C. Without proper thermal pad soldering, internal die temperature can rise 15-20C above ambient during sustained 48MHz operation. Recommended copper pour: minimum 25 mm x 25 mm with 9 thermal vias to the opposite layer.
Route the 32.768 kHz crystal traces symmetrically and keep them within 5 mm of the XIN32/XOUT32 pins (PA00/PA01). Surround the crystal with a ground guard ring to suppress noise injection from switching nodes. If the 32 kHz crystal is not used, leave PA00/PA01 as GPIO and tie XIN32 to GND via 1 Mohm to prevent floating-input current draw.
Do not assume default SERCOM pin mapping - each SERCOM peripheral can be routed to any of four PAD positions via the PORT multiplexer, so the firmware must explicitly configure pin multiplexing before enabling the peripheral. Bootloader entry via the BOOTPROT fuse is also pin-dependent; verify SWD and RESET connections match the chosen debugger before locking the MCU. Unused pins should be set as outputs low or inputs with enabled pull-down to avoid floating-input current in standby.
Informações de conformidade
RoHS and REACH compliant per Microchip product page. MSL3 moisture sensitivity per JEDEC J-STD-020. Not AEC-Q100 qualified - this part targets industrial/consumer segments; for automotive use choose ATSAMx automotive-qualified variants.
