ATSAM4C32EA-AU
ATSAM4C32EA-AU - Dual-Core 120MHz MCU | Microchip
The Microchip Technology ATSAM4C32EA-AU is a dual-core 32-bit ARM Cortex-M4 microcontroller operating up to 120 MHz, with 2 MB of embedded Flash and up to 304 KB of SRAM, in a 144-pin LQFP package measuring 20 x 20 mm. The two Cortex-M4 processors provide parallel execution for smart-energy, industrial-control, communications, and embedded-system designs.
A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripheral interfaces, and control logic on one device. The ATSAM4C32 belongs to the SAM4C family of system-on-chip devices, placing it within the hierarchy of embedded MCU, processor, semiconductor, and industrial-control electronics. Its dual architecture allows one core to execute control tasks while the other handles communication, data processing, or time-sensitive operations.
Key device characteristics include a maximum operating frequency of 120 MHz, 2 MB of embedded Flash, and as much as 304 KB of SRAM. Each processor includes an on-chip cache according to the manufacturer datasheet. The ATSAM4C32EA-AU also includes cryptographic functionality and is identified as a green, industrial-temperature device in the product listing. Its 144-LQFP package provides a high pin count for external peripheral connectivity.
The dual Cortex-M4 architecture supports parallel software tasking without requiring a separate microcontroller. This can improve responsiveness in energy-management systems that must coordinate sensing, communications, control loops, and safety-related monitoring. The shared system-on-chip integration also reduces the need for discrete processing components while preserving dedicated real-time execution capability.
Typical applications include smart energy meters, industrial automation controllers, connected sensing equipment, building-control systems, communications equipment, and embedded gateways. The 120 MHz processing capacity is suitable for protocol handling and supervisory control, while the two cores can separate background processing from time-sensitive control tasks.
Designers should confirm pin assignments, peripheral multiplexing, power requirements, clock configuration, and memory constraints against the manufacturer datasheet before layout release. Because this is a 144-pin LQFP device, careful escape routing and thermal assessment are important. Microchip states that the ATSAM4C32 family is not recommended for new designs and recommends the PIC32CXMTC/MTG device family or its associated evaluation kits as an alternative direction.
This page consolidates the exact orderable-part information, verified technical characteristics, lifecycle guidance, application context, and design considerations needed to assess the ATSAM4C32EA-AU against a new embedded-control project.
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