Microchip Technology ATSAMA5D35A-CU

Overview

ATSAMA5D35A-CU from Microchip Technology (formerly Atmel) is a high-performance, power-efficient ARM® Cortex®-A5-based embedded MPU operating at up to 536 MHz, featuring a VFPv4 floating-point unit, 128 KB on-chip SRAM, and integrated Gigabit Ethernet MAC (GMAC) with IEEE 1588 support. It integrates dual CAN controllers, 12-channel 12-bit ADC with resistive touchscreen interface, and hardware-accelerated AES/TDES/SHA cryptographic engines - designed for industrial HMI, secure gateway, and battery-powered edge control applications.

For engineers reviewing the ATSAMA5D35A-CU datasheet, ATSAMA5D35A-CU pinout, ATSAMA5D35A-CU application, or ATSAMA5D35A-CU equivalent, key selection considerations include its dual-CAN + GMAC + LCD controller feature set, 324-ball LFBGA package compatibility, DDR2/LPDDR2 memory interface with 24-bit ECC, and secure boot with TRNG and FIPS-compliant encryption engines.

Technical Context

The ATSAMA5D35A-CU implements a multi-layer bus architecture with 39 DMA channels to sustain high-bandwidth data flow between the Cortex-A5 core, DDR2/LPDDR2 memory controller, and peripherals including GMAC, dual CAN, and LCD controller. Its system clock runs up to 166 MHz, supported by two PLLs - one 400–1000 MHz system PLL and a dedicated 480 MHz USB PLL.

Security is implemented via a dedicated TRNG, hardware AES-256/TDES/SHA-512 engines, and Atmel Secure Boot - enabling authenticated firmware loading and tamper-resistant external data transfers. The device supports boot from NAND Flash (with 24-bit PMECC), eMMC, SD card, or serial DataFlash®, with remap capability and battery-backed registers for low-power retention.

Key Specifications

Pinout & Package

The ATSAMA5D35A-CU is housed in a 324-ball Low-Profile Fine-Pitch Ball Grid Array (LFBGA) package measuring 15 mm × 15 mm × 1.4 mm with 0.8 mm ball pitch. This package supports high I/O density (160 GPIOs), DDR2 signal integrity via dedicated VDDIODDR rails, and thermal dissipation suitable for extended industrial temperature range operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar embedded MPU applications.

Compared with ATSAMA5D27C-CU and i.MX6ULL, the ATSAMA5D35A-CU uniquely combines dual CAN 2.0B, IEEE 1588-enabled GMAC, and FIPS-compliant hardware crypto - making it the only option among the three qualified for time-critical, secure, multi-bus industrial edge nodes without external assist chips.

Availability

ATSAMA5D35A-CU is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateway, and battery-powered telematics applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.

Supply support for ATSAMA5D35A-CU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a global semiconductor company delivering scalable, secure, and reliable microcontrollers, analog, FPGA, and connectivity solutions for industrial, automotive, and communications markets.

The SAMA5D3 series was designed specifically for high-reliability industrial human-machine interface and secure connectivity applications - emphasizing low-power operation, hardware-based security, and rich peripheral integration for Linux-capable edge devices.

FAQ

What is the maximum operating frequency of the ATSAMA5D35A-CU?

The ATSAMA5D35A-CU operates at a maximum CPU frequency of 536 MHz using the ARM Cortex-A5 core. This frequency is achieved with dynamic voltage and frequency scaling (DVFS) support, and the internal system clock runs up to 166 MHz. The device also includes a dedicated 480 MHz PLL for USB high-speed operation, independent of the main system clock domain.

Does the ATSAMA5D35A-CU support secure boot and cryptographic acceleration?

Yes, the ATSAMA5D35A-CU includes Atmel Secure Boot Solution with hardware-based verification, a True Random Number Generator (TRNG), and dedicated cryptographic engines for AES-256, TDES, and SHA-1/224/256/384/512. These features enable FIPS PUB 197 and 46-3 compliant operations and allow secure firmware authentication and encrypted data transfers without software overhead - all integral to the ATSAMA5D35A-CU's silicon design.

Which memory types does the ATSAMA5D35A-CU support natively?

The ATSAMA5D35A-CU natively supports DDR2, LPDDR, and LPDDR2 memory via its 32-bit dynamic RAM controller (up to 512 MB), and MLC/SLC NAND Flash with hardware 24-bit PMECC error correction. It also supports parallel NOR Flash, SRAM, and serial DataFlash® through its External Bus Interface (EBI) and High-Speed Multimedia Card Interfaces (HSMCI) for eMMC 4.3 and SD 2.0 cards - all directly managed by the ATSAMA5D35A-CU without external controllers.

How many CAN interfaces does the ATSAMA5D35A-CU provide, and what protocol versions are supported?

The ATSAMA5D35A-CU integrates two independent CAN controllers (CAN0 and CAN1), each fully compliant with CAN 2.0 Part A and CAN 2.0 Part B specifications. Each controller supports 8 message mailboxes with hardware acceptance filtering and loopback self-test mode - enabling robust dual-fieldbus communication in automotive diagnostics, industrial PLC backplanes, and vehicle telematics systems using the ATSAMA5D35A-CU as the central node.

What package type and pin count does the ATSAMA5D35A-CU use?

The ATSAMA5D35A-CU is offered exclusively in a 324-ball Low-Profile Fine-Pitch Ball Grid Array (LFBGA) package measuring 15 mm × 15 mm × 1.4 mm with 0.8 mm ball pitch. This package provides 160 general-purpose I/Os, dedicated DDR2 signaling lanes, and power domains optimized for industrial temperature operation - and is the only package variant assigned to the ATSAMA5D35A-CU part number per Microchip's official documentation.