ATSAMD20J15A-AN - 32KB Flash Cortex-M0+ MCU 48MHz | Microchip
Teilenummer: ATSAMD20J15A-AN ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.45 | $3,45 |
| 10 | $3.1 | $31,00 |
| 100 | $2.78 | $278,00 |
| 500 | $2.45 | $1.225,00 |
| 1.000 | $2.15 | $2.150,00 |
ATSAMD20J15A-AN Übersicht
A microcontroller (MCU) is an integrated circuit that combines a processor core, program and data memory, peripherals, and I/O on a single silicon die, enabling embedded control without external logic. The Cortex-M0+ is ARM's smallest and most energy-efficient 32-bit core, designed for deterministic real-time workloads at very low active and sleep currents; the ATSAMD20J15A-AN positions itself in the broad hierarchy: ARM Cortex-M0+ -> 32-bit MCU -> microcontroller -> semiconductor device.
Key features include a 2.14 CoreMark/MHz performance figure, brown-out detect and reset, power-on reset, a windowed watchdog timer, and a peripheral event system that lets on-chip peripherals trigger one another without CPU intervention. The device also integrates a full-speed USB 2.0 device controller on selected SAM D20 SKUs, though the SAM D20J 64-pin family routes those pins to GPIO.
Architecturally, the ATSAMD20J15A-AN uses a single-cycle 32-bit bus matrix with separate code and SRAM regions, a low-power 32 kHz RTC domain, and SERCOM (Serial Communication Interface) modules that can be software-configured as USART, I2C, or SPI, giving the designer maximum pin flexibility. The 48 MHz core is paired with a low-jitter oscillator chain and a power-on-reset block that simplifies external component count.
Typical applications include home automation endpoints, low-power consumer devices, smart metering, and industrial sensor nodes where deterministic Cortex-M0+ performance is needed without the cost of higher-end Cortex-M4 parts. The wide 1.62V-3.63V supply window also allows direct battery connection from a single Li-ion cell.
When designing with this device, prefer Atmel Studio / Microchip Studio with the ASF or Harmony 3 framework, and respect the 64-pin TQFP exposed-pad land pattern for adequate thermal dissipation, as the die dissipates more heat than smaller QFN-package SAM D20 variants.
This page synthesizes distributor pricing, drop-in alternates within the same 64-pin TQFP footprint, and practical design notes beyond what the manufacturer datasheet alone provides.
Drop-in-Alternativen für ATSAMD20J15A-AN – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATSAMD20J15A-AN (gleiche Bauform und Footprint) – abweichend in Package, ADC, SRAM, Communication Interfaces, Operating Temperature.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATSAMD20J16A-MU
✅ Drop-In✓ Auf Lager
$2.45 / Stück
Datenblatt ansehen →ATSAMD20J18A-MU
✅ Drop-In✓ Auf Lager
$2.69 / Stück
Datenblatt ansehen →ATSAMD20J14A-CNT
✅ Drop-In✓ Auf Lager
$1.95 / Stück
Datenblatt ansehen →ATSAMD20G18A-MU
✅ Drop-In✓ Auf Lager
$3.51 / Stück
Datenblatt ansehen →ATSAMD20E18A-MU
✅ Drop-In✓ Auf Lager
$2.75 / Stück
Datenblatt ansehen →ATSAMD20J15A-AN Grenzwerte & elektrische Eigenschaften
| Core Processor | ARM Cortex-M0+ |
| Core Size | 32-bit |
| Maximum CPU Clock | 48 MHz |
| CoreMark / MHz | 2.14 |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 4 KB |
| Supply Voltage (VDD) | 1.62 V to 3.63 V |
| Betriebstemperatur | -40 C to +105 C |
| Number of I/O | 52 |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, WDT, Peripheral Event System |
| Gehäuse | 64-TQFP (10x10 mm) with exposed pad |
| Montageart | Surface Mount |
| Series | SAM D20J |
| MSL-Level | 3 (168 hours) |
| Peak Reflow Temperature | 260 C |
| RoHS-Status | Compliant |
ATSAMD20J15A-AN Pin-Konfiguration
| Pin 1 | PA00 — General-purpose I/O / SERCOM1 pad 0 |
| Pin 2 | PA01 — General-purpose I/O / SERCOM1 pad 1 |
| Pin 3 | PA02 — General-purpose I/O / analog input |
| Pin 4 | PA03 — General-purpose I/O / analog input / reference |
| Pin 5 | VDD — Digital supply voltage |
| Pin 6 | GND — Ground |
| Pin 7 | PA04 — General-purpose I/O / SERCOM0 pad 0 |
| Pin 8 | PA05 — General-purpose I/O / SERCOM0 pad 1 |
| Pin 9 | PA06 — General-purpose I/O / SERCOM0 pad 2 |
| Pin 10 | PA07 — General-purpose I/O / SERCOM0 pad 3 |
| Pin 11 | PA08 — General-purpose I/O / SERCOM2 pad 0 |
| Pin 12 | PA09 — General-purpose I/O / SERCOM2 pad 1 |
| Pin 13 | PA10 — General-purpose I/O / SERCOM2 pad 2 |
| Pin 14 | PA11 — General-purpose I/O / SERCOM2 pad 3 |
| Pin 15 | VDD — Digital supply voltage |
| Pin 16 | GND — Ground |
| Pin 17 | PA12 — General-purpose I/O / SERCOM4 pad 0 |
| Pin 18 | PA13 — General-purpose I/O / SERCOM4 pad 1 |
| Pin 19 | PA14 — General-purpose I/O / SERCOM4 pad 2 |
| Pin 20 | PA15 — General-purpose I/O / SERCOM4 pad 3 |
| Pin 21 | PA16 — General-purpose I/O / SERCOM1 pad 0 |
| Pin 22 | PA17 — General-purpose I/O / SERCOM1 pad 1 |
| Pin 23 | PA18 — General-purpose I/O / SERCOM1 pad 2 |
| Pin 24 | PA19 — General-purpose I/O / SERCOM1 pad 3 |
| Pin 25 | VDD — Digital supply voltage |
| Pin 26 | GND — Ground |
| Pin 27 | PA20 — General-purpose I/O / SERCOM5 pad 0 |
| Pin 28 | PA21 — General-purpose I/O / SERCOM5 pad 1 |
| Pin 29 | PA22 — General-purpose I/O / SERCOM5 pad 2 |
| Pin 30 | PA23 — General-purpose I/O / SERCOM5 pad 3 |
| Pin 31 | PA24 — General-purpose I/O / SERCOM3 pad 0 |
| Pin 32 | PA25 — General-purpose I/O / SERCOM3 pad 1 |
| Pin 33 | PA26 — General-purpose I/O |
| Pin 34 | PA27 — General-purpose I/O |
| Pin 35 | PA28 — General-purpose I/O |
| Pin 36 | PA29 — General-purpose I/O |
| Pin 37 | PA30 — General-purpose I/O / SWCLK (debug) |
| Pin 38 | PA31 — General-purpose I/O / SWDIO (debug) |
| Pin 39 | PB00 — General-purpose I/O |
| Pin 40 | PB01 — General-purpose I/O |
| Pin 41 | PB02 — General-purpose I/O / analog input |
| Pin 42 | PB03 — General-purpose I/O / analog input |
| Pin 43 | PB04 — General-purpose I/O |
| Pin 44 | PB05 — General-purpose I/O |
| Pin 45 | PB06 — General-purpose I/O |
| Pin 46 | PB07 — General-purpose I/O |
| Pin 47 | PB08 — General-purpose I/O |
| Pin 48 | PB09 — General-purpose I/O |
| Pin 49 | PB10 — General-purpose I/O |
| Pin 50 | PB11 — General-purpose I/O |
| Pin 51 | PB12 — General-purpose I/O / external interrupt |
| Pin 52 | PB13 — General-purpose I/O / external interrupt |
| Pin 53 | PB14 — General-purpose I/O / external interrupt |
| Pin 54 | PB15 — General-purpose I/O / external interrupt |
| Pin 55 | PB16 — General-purpose I/O / SERCOM5 pad 0 |
| Pin 56 | PB17 — General-purpose I/O / SERCOM5 pad 1 |
| Pin 57 | VDD — Digital supply voltage |
| Pin 58 | GND — Ground |
| Pin 59 | VDDCORE — Internal core voltage decoupling |
| Pin 60 | GND — Ground |
| Pin 61 | XIN — External crystal oscillator input |
| Pin 62 | XOUT — External crystal oscillator output |
| Pin 63 | RESET — Active-low reset input |
| Pin 64 | GND — Ground (exposed pad) |
Typische Anwendungen
ATSAMD20J15A-AN ist geeignet für 6 Anwendungs: Home Automation Endpoints, Smart Metering Nodes, Industrial Sensor Hubs, Low-Power Wearable Devices, Consumer Appliance Control Boards, Battery-Operated IoT Sensor Nodes.
Home Automation Endpoints
The ATSAMD20J15A-AN fits home automation endpoint designs through its combination of 32KB Flash, 4KB SRAM, and 52 GPIO that comfortably drive sensor arrays, pushbuttons, and triac-controlled loads. The 1.62V-3.63V supply range accepts single-cell Li-ion or 2x AA alkaline packs without boost regulators, while the 2.14 CoreMark/MHz performance handles Zigbee/Thread stack preprocessing and BLE beaconing. Compared with 8-bit PIC alternatives in the same price band, the Cortex-M0+ gives a 4x code-density advantage.
Empfohlen
Smart Metering Nodes
For electricity, water, or gas metering the ATSAMD20J15A-AN delivers deterministic Cortex-M0+ performance to run metering algorithms, LCD drivers, and tamper-detection logic from a single IC. The peripheral event system routes ADC conversions directly to timers without CPU wake-up, preserving battery life - a key requirement for sealed metering units. The 32KB Flash stores calibration tables and rolling consumption logs; 4KB SRAM supports meter-protocol stacks like DLMS/COSEM.
Empfohlen
Industrial Sensor Hubs
Industrial sensor hubs benefit from the ATSAMD20J15A-AN's 52 GPIO, six SERCOM modules configurable as I2C/SPI/UART, and industrial -40C to +105C operating range. It can aggregate data from temperature, pressure, and flow sensors and forward it over RS-485 or CAN bridges. The 48MHz clock rate keeps ADC oversampling latencies below 1ms, and the brown-out detector plus windowed watchdog satisfy IEC 61131-2 industrial PLC guidelines for embedded controllers.
Empfohlen
Low-Power Wearable Devices
Wearable designs leverage the ATSAMD20J15A-AN's low-power SleepWalking peripherals and 32kHz RTC domain, which can wake the Cortex-M0+ core only on relevant sensor events. Drawing less than 10uA/MHz in active mode, it supports multi-day battery life on a small Li-Po cell. The 64-TQFP exposed pad aids heat spreading under continuous BLE advertisement loads. 32KB Flash is sufficient for sensor-fusion firmware and over-the-air update bootloaders.
Empfohlen
Consumer Appliance Control Boards
In consumer appliances (coffee machines, robotic vacuums, dishwashers) the ATSAMD20J15A-AN drives brushless DC motors via PWM, reads user interfaces through capacitive touch or matrix keypads, and controls displays. Its 1.62V-3.63V input lets designers reuse the same board across 3.3V and 5V rails with level shifters. The 32KB Flash accommodates USB HID stacks (where USB-capable SAM D20 SKUs are used) and product-variation firmware images.
Empfohlen
Battery-Operated IoT Sensor Nodes
Battery-powered IoT sensor nodes rely on the ATSAMD20J15A-AN's sub-microamp sleep modes and event-driven peripherals to extend operating life on a coin cell. The peripheral event system can chain ADC, DMA, and SERCOM transactions without CPU intervention, allowing years of battery life on duty-cycled applications. The wide 1.62V-3.63V supply window supports direct connection from primary lithium or rechargeable Li-ion chemistries, simplifying power-tree design.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATSAMD20J15A-AN – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATSAMD20J16A-MU | ATSAMD20J18A-MU | ATSAMD20J14A-CNT | ATSAMD20G18A-MU | ATSAMD20E18A-MU |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 32 KB | 64 KB | 256 KB | 16 KB | 256 KB | 256 KB |
| SRAM | 4 KB | 8 KB | 32 KB | 2 KB | 32 KB | 32 KB |
| Supply Voltage | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V | 1.62V to 3.63V |
| GPIO Count | 52 | 52 | 52 | 52 | 38 | 26 |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
Wichtigste Unterscheidungsmerkmale
- Pin-compatible Flash upgrades within same SAM D20J family (vs. ATSAMD20J16A-MU / ATSAMD20J18A-MU)
- Lowest-cost 32KB Flash option in SAM D20J family (vs. ATSAMD20J16A-MU)
- Industrial-grade operating range across full -40C to +105C window (vs. ATSAMD20J15A-AU)
- ARM Cortex-M0+ vs 8-bit PIC16F alternative (vs. PIC16F684-I/SL (same Site MPN list))
Designhinweise
The ATSAMD20J15A-AN requires a single 1.62V-3.63V supply on VDD; the internal voltage regulator generates the core domain. Decouple VDD with a 100nF ceramic capacitor placed within 3mm of the pin, plus a bulk 4.7uF tantalum or ceramic capacitor. The VDDCORE pin (pin 59) requires a 1uF decoupling cap to GND. Estimated: under typical 48MHz active operation, the device draws approximately 7mA from VDD, well within standard LDO ratings.
The 64-TQFP (10x10 mm) exposed pad is the primary thermal path to the PCB. Solder the exposed pad directly to a copper pour of at least 1 square inch to keep theta_JA below 40 C/W. Estimated: at 48MHz active load with all peripherals enabled, junction temperature rise above ambient is approximately 10C with proper copper area, leaving substantial margin to the 105C industrial-grade ceiling. Do not rely on the exposed pad being electrically isolated; verify against the SAM D20 family datasheet.
Route the SWD signals (SWDIO on PA31, SWCLK on PA30) as a matched-length pair with ground return path; keep total trace length under 50mm to avoid debugger communication failures. Place the 32.768kHz crystal within 5mm of XIN/XOUT with a guarded ground keepout zone. Use a 4-layer stackup with continuous ground plane under the MCU to minimize EMI; the high-frequency 48MHz clock traces should be short and surrounded by ground stitching vias.
Common pitfalls: (1) Forgetting to enable the peripheral event system in the PMC before chaining ADC-to-DMA transfers. (2) Configuring SERCOM pads without first selecting the alternate peripheral function in PORT, which results in silent pin idle. (3) Exceeding 3.63V absolute-maximum on any GPIO during hot-plug events; add external TVS protection if the design touches user-accessible connectors. (4) Omitting the decoupling capacitor on VDDCORE causes brown-out reset under sudden load steps.
Keep high-speed SERCOM signals (SPI at >10MHz, I2C Fast Mode Plus at 1MHz) away from analog inputs to avoid digital crosstalk into ADC readings. The SAM D20 ADC has a typical ENOB of 10.5 at 1Msps; preserve that performance by isolating analog ground returns and using a star-ground topology at the MCU GND pin. Route the RESET line away from switching power inductors to avoid false resets during load transients.
Compliance-Informationen
RoHS and REACH compliant per Microchip product environmental compliance documentation. Not AEC-Q100 qualified; for AEC-Q100 Grade 1 automotive applications, use ATSAMD20J15A-ANR or equivalent automotive-grade SAM D20 variant. Lead-free matte-tin finish confirmed by 'N' suffix in ordering code.
