ATSAMD20J17A-CU - 128KB Flash Cortex-M0+ MCU | Microchip
N.º da peça: ATSAMD20J17A-CU ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.32 | $4,32 |
| 10 | $3.89 | $38,90 |
| 100 | $3.46 | $346,00 |
| 500 | $3.11 | $1.555,00 |
| 1.000 | $2.78 | $2.780,00 |
| 3.000 | $2.52 | $7.560,00 |
ATSAMD20J17A-CU Visão geral
A microcontroller (MCU) is an integrated circuit that combines a processor core, program and data memory, peripherals, and I/O on a single die. The Cortex-M0+ class is the most area- and cost-optimized ARM core, designed for energy-efficient embedded applications while retaining the ARM Thumb-2 instruction set and a full Cortex-M ecosystem (CMSIS, vendor toolchains). Microcontrollers sit at the bottom of the embedded hierarchy: microcontroller -> embedded processor -> semiconductor -> integrated circuit.
Key features include up to 52 programmable I/O pins, a 12-bit ADC with up to 20 channels, a 10-bit DAC, a 256-channel Peripheral Touch Controller (PTC), an RTC with calendar mode, full-speed USB device, SERCOM serial interfaces (up to 6), and an Event System for hardware inter-peripheral signaling. The device also integrates an 8-channel DMA, brown-out detection, and multiple sleep modes for low-power operation.
The SAM D20 architecture pairs an ARM Cortex-M0+ core (single-cycle multiplier, NVIC) with a multi-layer AHB/APB bus matrix, allowing deterministic peripheral access. Microchip's Atmel Studio/Microchip Studio and ASF/MPLAB Harmony frameworks, plus SEGGER J-Link support, give the part a mature firmware ecosystem. Sleep currents in the microamp range make it well suited for battery-powered designs.
Typical applications include home automation, consumer electronics, smart metering, industrial control nodes, and low-power wireless sensor hubs. The 64-ball BGA package enables compact board layouts for wearables and IoT end nodes.
When designing with this part, confirm PCB land pattern compatibility for the 5x5 mm 64-ball UFBGA and verify decoupling per the SAM D20 datasheet. Use a 32.768 kHz crystal only if RTC accuracy requires it; otherwise the internal 48 MHz DFLL is sufficient. Configure unused I/O as outputs with low state to minimize leakage.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para ATSAMD20J17A-CU — 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 ATSAMD20J17A-CU (mesmo formato e footprint) — diferindo em SRAM, ADC, Package, Flash Memory, USB.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAMD20J18A-CU
✅ Drop-In✓ Em estoque
$3.2 / unidade
Ver ficha técnica →ATSAMD20J16A-CU
✅ Drop-In✓ Em estoque
$1.61 / unidade
Ver ficha técnica →ATSAMD20J15A-CU
✅ Drop-In✓ Em estoque
$2.05 / unidade
Ver ficha técnica →ATSAMD20J14A-CU
✅ Drop-In✓ Em estoque
$1.32 / unidade
Ver ficha técnica →ATSAMD21J17A-CU
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMD20J17A-CU Classificações máximas e características elétricas
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Family | SAM D20J (Atmel SMART) |
| Maximum CPU Frequency | 48 MHz |
| CoreMark/MHz | 2.14 |
| Flash Memory | 128 KB |
| SRAM | 16 KB |
| Operating Voltage Range | 1.6 V to 3.6 V |
| Faixa de temperatura de operação | -40C to +85C (industrial grade) |
| Encapsulamento | 64-ball UFBGA (5x5 mm) |
| I/O Pins (max) | 52 (programmable) |
| ADC | 12-bit, up to 20 channels |
| DAC | 10-bit |
| Touch Controller (PTC) | 256-channel |
| RTC | Yes, with calendar mode |
| USB | Full-speed USB Device |
| SERCOM Serial Interfaces | Up to 6 |
| DMA | 8-channel |
| Status RoHS | Compliant |
| Tipo de montagem | Surface Mount |
Configuração de pinos do ATSAMD20J17A-CU
| Pino A1 | VDDIO — Digital I/O supply |
| Pino A2 | PA02 — GPIO / ADC AIN0 |
| Pino A3 | PA03 — GPIO / ADC AIN1 / VREFA |
| Pino A4 | PA04 — GPIO / ADC AIN4 |
| Pino A5 | PA05 — GPIO / ADC AIN5 |
| Pino A6 | PA06 — GPIO / ADC AIN6 |
| Pino A7 | PA08 — GPIO / NRESET |
| Pino A8 | GND — Ground |
| Pino B1 | PA00 — GPIO / ADC AIN2 |
| Pino B2 | PA01 — GPIO / ADC AIN3 |
| Pino B3 | PA07 — GPIO / ADC AIN7 |
| Pino B4 | PA09 — GPIO / SERCOM |
| Pino B5 | PA10 — GPIO / SERCOM |
| Pino B6 | PA11 — GPIO / SERCOM |
| Pino B7 | PA12 — GPIO / SERCOM |
| Pino B8 | GND8 — Ground |
| Pino C1 | VDDIN — Voltage regulator input |
| Pino C2 | PA13 — GPIO / SERCOM |
| Pino C3 | PA14 — GPIO / SERCOM |
| Pino C4 | PA15 — GPIO / SERCOM |
| Pino C5 | PA16 — GPIO / SERCOM |
| Pino C6 | PA17 — GPIO / SERCOM |
| Pino C7 | PA18 — GPIO |
| Pino C8 | PA19 — GPIO |
| Pino D1 | PA20 — GPIO |
| Pino D2 | PA21 — GPIO |
| Pino D3 | PA22 — GPIO |
| Pino D4 | PA23 — GPIO |
| Pino D5 | PA24 — GPIO / USB DP |
| Pino D6 | PA25 — GPIO / USB DM |
| Pino D7 | PA27 — GPIO |
| Pino D8 | PA28 — GPIO |
| Pino E1 | GND — Ground |
| Pino E2 | PB02 — GPIO / ADC AIN10 |
| Pino E3 | PB03 — GPIO / ADC AIN11 |
| Pino E4 | PB04 — GPIO / ADC AIN12 |
| Pino E5 | PB05 — GPIO / ADC AIN13 |
| Pino E6 | PB06 — GPIO / ADC AIN14 |
| Pino E7 | PB07 — GPIO / ADC AIN15 |
| Pino E8 | PB08 — GPIO / ADC AIN2 |
| Pino F1 | PB09 — GPIO / ADC AIN3 |
| Pino F2 | PB10 — GPIO |
| Pino F3 | PB11 — GPIO |
| Pino F4 | PB12 — GPIO |
| Pino F5 | PB13 — GPIO |
| Pino F6 | PB14 — GPIO |
| Pino F7 | PB15 — GPIO |
| Pino F8 | GND — Ground |
| Pino G1 | PB17 — GPIO |
| Pino G2 | PB18 — GPIO |
| Pino G3 | PB19 — GPIO |
| Pino G4 | PB20 — GPIO |
| Pino G5 | PB21 — GPIO |
| Pino G6 | PB22 — GPIO |
| Pino G7 | PB23 — GPIO |
| Pino G8 | PB24 — GPIO |
| Pino H1 | PB25 — GPIO |
| Pino H2 | PB26 — GPIO |
| Pino H3 | PB27 — GPIO |
| Pino H4 | PB28 — GPIO |
| Pino H5 | PB29 — GPIO |
| Pino H6 | PB30 — GPIO |
| Pino H7 | PB31 — GPIO |
| Pino H8 | NC — Not connected (per datasheet) |
| Pino J1 | NC — Not connected (per datasheet) |
| Pino J2 | NC — Not connected (per datasheet) |
| Pino J3 | XIN32 — 32.768 kHz crystal input |
| Pino J4 | XOUT32 — 32.768 kHz crystal output |
| Pino J5 | VDDCORE — Internal core voltage (decoupling only) |
| Pino J6 | VDDIO — Digital I/O supply |
| Pino J7 | NC — Not connected (per datasheet) |
| Pino J8 | NC — Not connected (per datasheet) |
| Pino K1 | NC — Not connected (per datasheet) |
| Pino K2 | NC — Not connected (per datasheet) |
| Pino K3 | NC — Not connected (per datasheet) |
| Pino K4 | NC — Not connected (per datasheet) |
| Pino K5 | GND — Ground |
| Pino K6 | NC — Not connected (per datasheet) |
| Pino K7 | NC — Not connected (per datasheet) |
| Pino K8 | NC — Not connected (per datasheet) |
Aplicações típicas
ATSAMD20J17A-CU é adequado para 6 aplicaçãos: Home Automation Hubs, Smart Metering Endpoints, Wearable Fitness and Health Bands, Industrial Sensor Nodes, USB HID Peripherals, Consumer Appliance Control Boards.
Home Automation Hubs
The ATSAMD20J17A-CU is well suited to home automation gateway and sensor-hub roles because of its 48 MHz Cortex-M0+ core, 128 KB Flash for Zigbee/Matter/Thread stack libraries, and 16 KB SRAM for packet buffers. Its six SERCOM peripherals allow simultaneous I2C sensor buses, SPI flash storage, and UART debug console without external multiplexers. The full-speed USB device port enables direct PC-side commissioning tools. The 1.6V-3.6V supply range and microamp-level Standby current support battery-backed wireless nodes that must run on coin cells or 2xAA packs across multi-year deployments.
Recomendado
Smart Metering Endpoints
In electricity, gas, and water metering the ATSAMD20J17A-CU provides the metrology front-end and application host on a single die. The 12-bit ADC with up to 20 channels simultaneously samples voltage and current waveforms; the 10-bit DAC can drive analog front-end calibration. Low-power Standby with RTC retention enables <5uA quiescent draw between measurement windows. The 256-channel PTC supports capacitive user interfaces (button, slider) on meter enclosures without additional touch ICs, and the 128 KB Flash stores calibration constants, tariff tables, and DLMS/COSEM or wireless M-Bus stack code.
Recomendado
Wearable Fitness and Health Bands
For wearable fitness bands the ATSAMD20J17A-CU pairs a Cortex-M0+ core with the 256-channel PTC to drive touch/proximity buttons on the band enclosure while consuming minimal current. The 12-bit ADC samples heart-rate optical sensor photodiode signals, and SERCOM peripherals drive SPI displays and I2C accelerometers. The 64-ball UFBGA package (5x5 mm) fits inside wristband form factors where QFP would not, and the 1.6V minimum VDD allows direct Li-ion battery operation through the discharge curve. Sleep currents under 5uA preserve multi-day battery life.
Recomendado
Industrial Sensor Nodes
In factory-automation sensor nodes the ATSAMD20J17A-CU hosts IO-Link device stacks thanks to 128 KB Flash for protocol libraries and SERCOM peripherals for the IO-Link COM channel. The Event System allows deterministic hardware trigger of ADC conversions from timer or GPIO edges without CPU wake-up. Eight DMA channels move sensor data without core intervention, leaving the M0+ to handle higher-layer diagnostics. The -40C to +85C operating range covers typical industrial cabinet environments, and the 5x5 mm BGA supports compact IP67 sensor housings where board area is at a premium.
Recomendado
USB HID Peripherals
For USB keyboards, mice, touch pads, and custom HID peripherals the ATSAMD20J17A-CU integrates a full-speed USB device controller with on-chip transceiver. The 48 MHz Cortex-M0+ core executes HID class drivers in firmware, while the 12-bit ADC scans key matrices or resistive touch panels. The 128 KB Flash fits USB stacks plus application logic for macro recording or RGB lighting control. Internal 48 MHz DFLL with USB-SOF locking eliminates the need for an external crystal on cost-sensitive consumer HID designs.
Recomendado
Consumer Appliance Control Boards
In washing machines, dishwashers, and induction cooktops the ATSAMD20J17A-CU drives HMI displays via SPI, scans capacitive touch via the 256-channel PTC, and runs motor control algorithms on its 48 MHz Cortex-M0+ core. SERCOM ports talk to power-conversion ICs and triac drivers. The 64-ball UFBGA package fits the small PCB area typical of front-panel modules. Brown-out detection and watchdog timer meet IEC 60730 Class B safety requirements for household appliance firmware, and the wide supply range tolerates rectified mains-derived rails after step-down conversion.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAMD20J17A-CU — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAMD20J18A-CU | ATSAMD20J16A-CU | ATSAMD20J15A-CU | ATSAMD20J14A-CU | ATSAMD21J17A-CU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-ball UFBGA (5x5 mm) | 64-ball UFBGA (5x5 mm) - same | 64-ball UFBGA (5x5 mm) - same | 64-ball UFBGA (5x5 mm) - same | 64-ball UFBGA (5x5 mm) - same | 64-ball UFBGA (5x5 mm) - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ (SAM D21 family) |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 128 KB | 256 KB | 64 KB | 32 KB | 16 KB | 128 KB |
| SRAM | 16 KB | 32 KB | 8 KB | 4 KB | 2 KB | 16 KB |
| USB | Full-speed Device | Full-speed Device | Full-speed Device | Full-speed Device | Full-speed Device | Full-speed Device/Host |
| Operating Voltage | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Principais diferenciais
- Higher Flash density within the same footprint (vs ATSAMD20J16A-CU)
- Larger SRAM for buffer-heavy applications (vs ATSAMD20J15A-CU)
- Best balance of cost, Flash, and SRAM in SAM D20J family (vs ATSAMD20J18A-CU)
- Path to upgrade within the same footprint (vs ATSAMD21J17A-CU)
Notas de projeto
Place a 100nF ceramic decoupling capacitor as close as possible to every VDDIO, VDDIN, and VDDCORE ball, plus a single 4.7uF bulk capacitor on the main supply rail. The SAM D20 internal voltage regulator requires a minimum 1uF on VDDCORE for stability. Brown-out detection is enabled by default at 1.6V; configure the SUPC controller to match the application supply profile. USB VBUS sensing is routed to a dedicated pin - if unused, leave it floating or tied to GND through a high-impedance path.
The 64-ball UFBGA package uses a 0.5 mm ball pitch and a 5x5 mm body. Design the PCB land pattern per IPC-7351 with NSMD (non-solder mask defined) pads for improved BGA rework yield. Use a 4-layer stack-up with a continuous ground plane directly under the BGA to provide reference for the inner balls and thermal dissipation. Via-in-pad is recommended for inner balls to maximize breakout routing density; plug and cap the vias to prevent solder wicking during reflow.
Keep the ADC reference capacitor trace (VREFA, AREF) short and surrounded by ground pour to minimize noise coupling. The XIN32/XOUT32 32.768 kHz crystal traces should be symmetric, length-matched, and guarded by a ground ring to reduce susceptibility to digital switching noise. Route USB DP/DM as a 90 ohm differential pair with no splits in the reference plane; place the USB common-mode choke and ESD array within 4 mm of the connector. The SERCOM pads are multiplexed across many balls - assign functions early to avoid PCB re-spin.
Do not enable the internal DFLL 48 MHz before the 32.768 kHz crystal or internal oscillator is stable, otherwise the USB-SOF lock will fail and USB enumeration will be unreliable. The SERCOM peripheral pads require explicit PINMUX configuration in the PORT controller before use - firmware that fails to set PINMUX will see no peripheral response. For low-power designs, route unused I/O as analog inputs (lowest leakage) and disable the digital input buffer via the PORT controller to avoid parasitic current draw.
Informações de conformidade
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose ATSAMx20J family AEC-Q100 variants for automotive. Halogen-free per Microchip material declaration.
