ATSAMD20J17A-CU - 128KB Flash Cortex-M0+ MCU | Microchip
Référence : ATSAMD20J17A-CU ✓ Actif| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour ATSAMD20J17A-CU — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATSAMD20J17A-CU (même facteur de forme et même empreinte) — différant par SRAM, ADC, Package, Flash Memory, USB.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMD20J18A-CU
✅ Remplacement direct✓ En stock
$3.2 / unité
Voir la fiche technique →ATSAMD20J16A-CU
✅ Remplacement direct✓ En stock
$1.61 / unité
Voir la fiche technique →ATSAMD20J15A-CU
✅ Remplacement direct✓ En stock
$2.05 / unité
Voir la fiche technique →ATSAMD20J14A-CU
✅ Remplacement direct✓ En stock
$1.32 / unité
Voir la fiche technique →ATSAMD21J17A-CU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATSAMD20J17A-CU Valeurs maximales et caractéristiques électriques
| 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 |
| Plage de température de fonctionnement | -40C to +85C (industrial grade) |
| Boîtier | 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 |
| Statut RoHS | Compliant |
| Type de montage | Surface Mount |
Configuration des broches de ATSAMD20J17A-CU
| Broche A1 | VDDIO — Digital I/O supply |
| Broche A2 | PA02 — GPIO / ADC AIN0 |
| Broche A3 | PA03 — GPIO / ADC AIN1 / VREFA |
| Broche A4 | PA04 — GPIO / ADC AIN4 |
| Broche A5 | PA05 — GPIO / ADC AIN5 |
| Broche A6 | PA06 — GPIO / ADC AIN6 |
| Broche A7 | PA08 — GPIO / NRESET |
| Broche A8 | GND — Ground |
| Broche B1 | PA00 — GPIO / ADC AIN2 |
| Broche B2 | PA01 — GPIO / ADC AIN3 |
| Broche B3 | PA07 — GPIO / ADC AIN7 |
| Broche B4 | PA09 — GPIO / SERCOM |
| Broche B5 | PA10 — GPIO / SERCOM |
| Broche B6 | PA11 — GPIO / SERCOM |
| Broche B7 | PA12 — GPIO / SERCOM |
| Broche B8 | GND8 — Ground |
| Broche C1 | VDDIN — Voltage regulator input |
| Broche C2 | PA13 — GPIO / SERCOM |
| Broche C3 | PA14 — GPIO / SERCOM |
| Broche C4 | PA15 — GPIO / SERCOM |
| Broche C5 | PA16 — GPIO / SERCOM |
| Broche C6 | PA17 — GPIO / SERCOM |
| Broche C7 | PA18 — GPIO |
| Broche C8 | PA19 — GPIO |
| Broche D1 | PA20 — GPIO |
| Broche D2 | PA21 — GPIO |
| Broche D3 | PA22 — GPIO |
| Broche D4 | PA23 — GPIO |
| Broche D5 | PA24 — GPIO / USB DP |
| Broche D6 | PA25 — GPIO / USB DM |
| Broche D7 | PA27 — GPIO |
| Broche D8 | PA28 — GPIO |
| Broche E1 | GND — Ground |
| Broche E2 | PB02 — GPIO / ADC AIN10 |
| Broche E3 | PB03 — GPIO / ADC AIN11 |
| Broche E4 | PB04 — GPIO / ADC AIN12 |
| Broche E5 | PB05 — GPIO / ADC AIN13 |
| Broche E6 | PB06 — GPIO / ADC AIN14 |
| Broche E7 | PB07 — GPIO / ADC AIN15 |
| Broche E8 | PB08 — GPIO / ADC AIN2 |
| Broche F1 | PB09 — GPIO / ADC AIN3 |
| Broche F2 | PB10 — GPIO |
| Broche F3 | PB11 — GPIO |
| Broche F4 | PB12 — GPIO |
| Broche F5 | PB13 — GPIO |
| Broche F6 | PB14 — GPIO |
| Broche F7 | PB15 — GPIO |
| Broche F8 | GND — Ground |
| Broche G1 | PB17 — GPIO |
| Broche G2 | PB18 — GPIO |
| Broche G3 | PB19 — GPIO |
| Broche G4 | PB20 — GPIO |
| Broche G5 | PB21 — GPIO |
| Broche G6 | PB22 — GPIO |
| Broche G7 | PB23 — GPIO |
| Broche G8 | PB24 — GPIO |
| Broche H1 | PB25 — GPIO |
| Broche H2 | PB26 — GPIO |
| Broche H3 | PB27 — GPIO |
| Broche H4 | PB28 — GPIO |
| Broche H5 | PB29 — GPIO |
| Broche H6 | PB30 — GPIO |
| Broche H7 | PB31 — GPIO |
| Broche H8 | NC — Not connected (per datasheet) |
| Broche J1 | NC — Not connected (per datasheet) |
| Broche J2 | NC — Not connected (per datasheet) |
| Broche J3 | XIN32 — 32.768 kHz crystal input |
| Broche J4 | XOUT32 — 32.768 kHz crystal output |
| Broche J5 | VDDCORE — Internal core voltage (decoupling only) |
| Broche J6 | VDDIO — Digital I/O supply |
| Broche J7 | NC — Not connected (per datasheet) |
| Broche J8 | NC — Not connected (per datasheet) |
| Broche K1 | NC — Not connected (per datasheet) |
| Broche K2 | NC — Not connected (per datasheet) |
| Broche K3 | NC — Not connected (per datasheet) |
| Broche K4 | NC — Not connected (per datasheet) |
| Broche K5 | GND — Ground |
| Broche K6 | NC — Not connected (per datasheet) |
| Broche K7 | NC — Not connected (per datasheet) |
| Broche K8 | NC — Not connected (per datasheet) |
Applications typiques
ATSAMD20J17A-CU convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAMD20J17A-CU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
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.
