ATSAMA5D31A-CU

The ATSAMA5D31A-CU is an ARM® Cortex®-A5 based embedded microprocessor IC delivering a 32-bit single-core CPU at 536 MHz in a 324-LFBGA (15×15) surface-mount package. Designed for industrial applications, it combines compute performance with integrated connectivity, memory support and hardware security to simplify system design.

Key benefits include low-power operating modes (below 0.5 mW in low-power mode), broad memory interface support and an industrial operating temperature range of −40 °C to 85 °C. The device is RoHS compliant.

Key Features

• Core ARM® Cortex®-A5 processor with a single 32-bit core running at 536 MHz, integrated MMU and floating point unit (VFPv4) plus 32 KB instruction and 32 KB data caches for improved code execution and data processing.
• Memory and Storage High-bandwidth 32-bit multi-port dynamic RAM controller supporting DDR2, LPDDR and LPDDR2 (up to 512 Mbyte) and an independent static memory controller with support for SLC/MLC NAND Flash and up to 24-bit ECC (PMECC). Includes internal boot ROM and internal SRAM.
• Connectivity Three USB 2.0 ports and one 10/100 Mbps Ethernet MAC, with additional serial interfaces available such as I2C, UART, SPI and CAN as part of the integrated peripheral set.
• Display and Sensor Interfaces Integrated LCD controller with hardware overlay support, touchscreen interface and a CMOS sensor interface to support advanced user interfaces and camera input.
• Security Hardware-accelerated crypto engines including AES, SHA and TDES plus a True Random Number Generator (TRNG) and a secure boot mechanism to protect code and data.
• System Architecture & DMA Multi-layer bus architecture with 39 DMA channels and two central DMA controllers to sustain high peripheral and memory throughput without impacting CPU performance.
• Low Power & Power Management Multiple low-power modes and power management features including a shut-down controller, battery backup registers and selectable low-frequency oscillators to optimize energy use in battery-powered designs.
• Package & Reliability 324-LFBGA (15×15) surface-mount package, industrial grade operation from −40 °C to 85 °C and RoHS compliance for robust field deployment.

Typical Applications

• Human–Machine Interfaces (HMI) and Control Panels — Drives LCD displays and touchscreens while handling UI logic and peripheral connectivity.
• Industrial Gateways and Connectivity Devices — Provides Ethernet and multiple serial interfaces for protocol bridging, data aggregation and field connectivity.
• Battery-Powered Embedded Products — Low-power modes and integrated power management support designs that require long battery life.
• Secure Embedded Systems — Hardware crypto engines and secure boot support anti-cloning, code protection and secure data transfers.
• Imaging and Sensor Modules — CMOS sensor interface and display controller enable camera-based user interfaces and sensor-rich applications.

Unique Advantages

• Balanced performance and efficiency: 536 MHz Cortex‑A5 core with floating point support and cache to handle compute tasks while offering sub-milliwatt low-power operation.
• Integrated security acceleration: AES, SHA, TDES and TRNG engines plus secure boot reduce external components and offload cryptographic workloads.
• Flexible memory and storage support: Controllers for DDR2/LPDDR/LPDDR2 and MLC NAND with up to 24-bit ECC simplify memory subsystem design and support robust data storage.
• Comprehensive peripheral set: Multiple USB 2.0 ports, 10/100 Ethernet and serial interfaces (I2C, UART, SPI, CAN) streamline system integration for connected applications.
• High-bandwidth system architecture: Multi-layer bus and 39 DMA channels sustain concurrent high-speed transfers between peripherals and memory.
• Industrial-grade packaging and thermal range: 324-LFBGA package and −40 °C to 85 °C operating range support deployment in demanding environments.

Why Choose ATSAMA5D31A-CU?

The ATSAMA5D31A-CU positions itself as a compact, industrial-grade MPU that pairs a 536 MHz ARM® Cortex®-A5 core with extensive on-chip peripherals, hardware security and flexible memory interfaces. Its combination of performance, low-power capability and integrated connectivity reduces system complexity and BOM count for embedded designers.

This device is suitable for developers building HMIs, industrial connectivity nodes, secure embedded controllers and battery-powered devices who need a verified feature set, on-chip accelerators and a robust package and temperature range for fielded products.

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