ATSAM3X2CA-AU
ATSAM3X2CA-AU - 84MHz 32-Bit ARM MCU | Microchip Technology
The Microchip Technology ATSAM3X2CA-AU is a 32-bit ARM Cortex-M3 microcontroller operating at up to 84 MHz, with a 1.62 V to 3.6 V supply range, 36K x 8 bits of SRAM, and a 100-LQFP (14 x 14 mm) package. It belongs to the SAM3X series and combines a high-performance processor core with embedded flash, SRAM, and peripheral integration in a surface-mount package.
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals on one device. The ATSAM3X2CA-AU is therefore a microcontroller, an embedded controller, a semiconductor, and a member of the broader industrial-control and embedded-processing categories. Its 84 MHz operating speed supports responsive control loops and real-time embedded tasks, while the 1.62 V to 3.6 V operating range permits integration with low-voltage digital systems.
The verified product information identifies the device as a 36K x 8-bit RAM device in the SAM3X series. The listing also confirms its 84 MHz maximum speed and 100-LQFP package. Detailed flash capacity, peripheral configuration, pin assignments, electrical limits, and temperature ratings are not included in the supplied verified snippets and therefore are not inferred here. Those parameters should be confirmed in the complete manufacturer documentation before schematic capture or PCB layout.
The 100-LQFP package provides 100 external lead positions and is intended for surface-mount assembly. Its 14 x 14 mm body is larger than the compact QFN packages used by many competing microcontrollers, but it provides a generous lead count for external peripheral connections. Engineers should use the official pin diagram and land pattern rather than infer connectivity from the package dimensions.
Typical design roles include embedded control, sensor aggregation, communications equipment, and compact industrial automation. In these systems, the 84 MHz Cortex-M3 processor can execute control firmware while the integrated memory retains working data. The exact peripheral complement and communication capabilities must be verified before assigning USB, Ethernet, UART, CAN, or other functions to specific pins.
A key design consideration is package-level planning. A 100-LQFP footprint requires adequate routing escape space, careful decoupling, and assembly-process verification. Designers should also confirm power sequencing, clocking, programming access, and every peripheral signal against the full ATSAM3X2CA-AU documentation. This page intentionally separates verified facts from missing technical fields.
This page combines verified pricing, package, speed, memory, and source information with explicit engineering gaps, helping engineers evaluate the ATSAM3X2CA-AU without presenting unavailable flash, pinout, temperature, or compliance data as established facts.
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