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Microchip Technology ATSAMA5D31A-CFUR
- Part No.:
- ATSAMA5D31A-CFUR
- Manufacturer:
- Microchip Technology
- Category:
- Microprocessors
- Package:
- 324-TFBGA
- Datasheet:
-
ATSAMA5D31A-CFUR.pdf
- Description:
- IC MPU SAMA5D3 536MHZ 324TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
ATSAMA5D31A-CFUR 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, 32 KB instruction and data caches, and integrated security engines (AES-256, SHA-256, TRNG). It supports DDR2/LPDDR2 memory with 24-bit ECC and targets industrial HMI, battery-powered control panels, and secure connected devices.
For engineers reviewing the ATSAMA5D31A-CFUR datasheet, ATSAMA5D31A-CFUR pinout, ATSAMA5D31A-CFUR application, or ATSAMA5D31A-CFUR equivalent, key selection criteria include its dual Ethernet MACs (GMAC + EMAC), 12-channel 12-bit ADC with resistive touchscreen support, LCD controller with hardware overlays, and secure boot with hardware-accelerated cryptography - all in a 324-ball LFBGA package.
Technical Context
The ATSAMA5D31A-CFUR implements a multi-layer bus architecture with 39 DMA channels to sustain high bandwidth between the Cortex-A5 core and peripherals including GMAC, EMAC, USB Host/Device, and ISI. Its memory subsystem includes a 512 MB DDR2/LPDDR2 controller with datapath scrambling and an independent Static Memory Controller supporting SLC/MLC NAND Flash with 24-bit PMECC.
Security is implemented via dedicated hardware blocks: AES-256/TDES encryption engines compliant with FIPS PUB 197/46-3, SHA-1/224/256/384/512 hash accelerator, True Random Number Generator (TRNG), and Atmel Secure Boot Solution enabling authenticated firmware loading from NAND, eMMC, or SD card.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-A5, ARM v7-A Thumb2 ISA, up to 536 MHz - enables Linux-capable real-time processing for complex UI and connectivity stacks. |
| Memory Interface | 32-bit DDR2/LPDDR2 controller supporting 512 MB with datapath scrambling - ensures high-bandwidth, secure main memory access. |
| Security Engines | AES-256, TDES, SHA-256, TRNG - provides FIPS-compliant cryptographic acceleration for secure boot, OTA updates, and encrypted data transfers. |
| Peripherals | GMAC (10/100/1000 Mbps + IEEE 1588), EMAC (10/100 Mbps), 2× CAN, 3× USB (2 HS host + 1 device), 12-bit ADC w/ 12-ch touch - supports industrial networking, automotive comms, and rich HMI. |
| Display & Imaging | LCD controller with overlay, alpha-blending, rotation, scaling, and ITU-R BT.601/656 ISI interface - enables high-fidelity graphics and camera integration without CPU load. |
| Package | 324-ball LFBGA, 15 × 15 × 1.4 mm, 0.8 mm pitch - compatible with standard PCB assembly processes and thermal management for industrial environments. |
Pinout & Package
ATSAMA5D31A-CFUR 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/LPDDR2 signal integrity, and thermal dissipation suitable for extended industrial operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA31 | Parallel I/O Controller A | 32-bit configurable GPIO bank with schmitt-trigger inputs, programmable pull-up/down, and interrupt-on-change - used for general-purpose control, button sensing, and peripheral interfacing. |
| PB0–PB26 | Parallel I/O Controller B | 27-bit GPIO bank with primary assignment to GMAC signals (GTX0–GRX7, GMDC/GMDIO) - enables direct gigabit Ethernet PHY connection without external glue logic. |
| PC0–PC31 | Parallel I/O Controller C | 32-bit GPIO bank supporting EMAC, SPI1, TWI1, USART1, and ADC analog inputs (AD0–AD11) - integrates wired networking, serial comms, and capacitive/resistive touch acquisition. |
| PD0–PD19 | Parallel I/O Controller D | 20-bit GPIO bank assigned to MCI0 (eMMC/SD), SPI0, USART0, and ADTRG - supports boot media, flash expansion, and synchronous sensor interfaces. |
| PE0–PE31 | Parallel I/O Controller E | 32-bit GPIO bank dedicated to External Bus Interface (EBI) signals (A0–A25, D0–D15, NCS0–NCS3, NWE/NRD) - enables direct connection to NOR/NAND flash, SRAM, and FPGA co-processors. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-accelerated LCD controller | Supports overlay composition, alpha-blending, rotation, and color space conversion - reduces CPU load by >70% during dynamic GUI rendering. |
| Dual Ethernet MACs (GMAC + EMAC) | Independent 10/100/1000 Mbps and 10/100 Mbps controllers with IEEE 1588 timestamping - enables redundant networking, time-sensitive industrial protocols, and legacy device bridging. |
| Secure boot with hardware crypto | Verifies signed firmware images using SHA-256 and decrypts payloads via AES-256 before execution - prevents unauthorized code injection and cloning. |
| 12-channel 12-bit ADC with touchscreen | Integrated resistive touch-screen controller (AD0UL–AD3LR) and 7 auxiliary analog inputs - eliminates need for external touch controller IC in HMI designs. |
| Multi-layer bus + 39 DMA channels | Decouples CPU from high-bandwidth peripherals (USB, ISI, GMAC) - sustains >400 MB/s aggregate throughput without CPU polling overhead. |
Applications
| Industrial Control Panel | Secure IoT Gateway |
|---|---|
Use Scenario: Operator-facing HMIs in factory automation systems requiring real-time response, graphical visualization, and local data logging. IC Role / Device Role / Timing Role: Main application processor executing Linux-based UI framework (e.g., Qt), managing touch input, driving TFT display, and coordinating EtherCAT/PROFINET over GMAC. Use Value: Integrated LCD controller and 12-bit ADC with touch support eliminate external display and touch ICs, reducing BOM cost and board area by ~35%. | Use Scenario: Edge gateway aggregating sensor data from Modbus RTU/ASCII field devices and forwarding to cloud via TLS-secured MQTT over Gigabit Ethernet. IC Role / Device Role / Timing Role: Secure application processor running embedded Linux, performing cryptographic offload (AES/SHA), managing dual Ethernet interfaces, and hosting TLS stack. Use Value: Hardware-accelerated crypto engines reduce TLS handshake latency by 4× vs. software-only implementation, enabling sub-100 ms secure connection setup. |
| Medical Patient Monitor | Battery-Powered Test Equipment |
Use Scenario: Portable diagnostic device displaying real-time waveforms (ECG, SpO₂), storing patient data locally, and supporting wireless firmware updates. IC Role / Device Role / Timing Role: Primary MCU handling waveform rendering via LCD controller, analog acquisition via 12-bit ADC, and secure OTA updates using AES-256 decryption and SHA-256 signature verification. Use Value: On-chip secure boot and crypto engines ensure only authenticated firmware executes, meeting IEC 62304 Class C safety requirements without external secure element. | Use Scenario: Handheld multimeter or oscilloscope requiring long battery life, high-resolution display, and USB-based PC communication. IC Role / Device Role / Timing Role: Application processor managing TFT display, analog front-end sampling, USB device interface for PC control, and low-power state management (0.5 mW shutdown mode). Use Value: Sub-0.5 mW low-power mode extends battery runtime to >120 hours; integrated USB transceivers eliminate external PHY, saving 3 mm² PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded MPU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP i.MX6ULL | ARM Cortex-A7 @ 900 MHz; single 10/100 EMAC; no GMAC or hardware LCD controller; uses external DDR3 | Lacks integrated gigabit Ethernet and display acceleration - requires external LVDS bridge and video codec for comparable HMI performance | Select when prioritizing higher CPU clock speed and lower licensing cost over integrated display/security features |
| Renesas RZ/G1C | ARM Cortex-A7 @ 1.0 GHz; single 10/100/1000 EMAC; no dedicated touchscreen ADC; supports DDR3L only | Missing resistive touch controller and 24-bit NAND ECC - necessitates external touch IC and NAND controller for industrial storage reliability | Select when needing higher single-thread performance and DDR3L compatibility, accepting added complexity for touch and NAND |
Compared with i.MX6ULL and RZ/G1C, ATSAMA5D31A-CFUR delivers superior integration for HMI-centric designs through its hardware LCD engine, 12-bit touchscreen ADC, dual Ethernet MACs, and on-die crypto accelerators - reducing system-level component count and validation effort.
Availability
ATSAMA5D31A-CFUR is available at Aetrix Electronics and suitable for industrial control panels, secure IoT gateways, medical monitors, and battery-powered test equipment requiring stable component supply across multi-year production cycles.
Supply support for ATSAMA5D31A-CFUR 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 microcontrollers, analog, FPGA, and security solutions with a focus on reliability, longevity, and embedded system integration.
The SAMA5D3 series was designed specifically for high-performance, low-power industrial HMIs and secure edge devices - emphasizing integrated display, connectivity, and hardware-enforced security without external co-processors.
FAQ
What is the maximum operating frequency of the ATSAMA5D31A-CFUR?
The ATSAMA5D31A-CFUR operates at a maximum CPU frequency of 536 MHz. This speed is achieved using the ARM Cortex-A5 core with VFPv4 floating-point unit and is sustained under thermal and voltage conditions specified in the official Microchip datasheet (11121C–ATARM–15-Oct-13). The device also supports dynamic frequency scaling to optimize power consumption in battery-operated applications.
Does the ATSAMA5D31A-CFUR support secure boot, and how is it implemented?
Yes, the ATSAMA5D31A-CFUR implements Atmel Secure Boot Solution using hardware-accelerated SHA-256 and AES-256 engines. During startup, it verifies digital signatures of firmware images stored in NAND Flash, eMMC, or SD card before loading into RAM. The ATSAMA5D31A-CFUR enforces chain-of-trust execution and prevents unauthorized or tampered code from running - a requirement for IEC 62304 and IEC 62443 compliance.
What types of memory does the ATSAMA5D31A-CFUR support natively?
The ATSAMA5D31A-CFUR natively supports DDR2, LPDDR, and LPDDR2 memory via its 32-bit dynamic RAM controller (up to 512 MB), and SLC/MLC NAND Flash with up to 24-bit error correction (PMECC) via its Static Memory Controller. It also includes 160 KB ROM (bootloader), 128 KB SRAM, and interfaces for eMMC 4.3, SD 2.0, and Serial DataFlash - eliminating need for external memory controllers.
How many Ethernet interfaces does the ATSAMA5D31A-CFUR provide, and what are their capabilities?
The ATSAMA5D31A-CFUR provides two independent Ethernet MACs: a Gigabit Ethernet MAC (GMAC) supporting 10/100/1000 Mbps with IEEE 1588 precision time protocol, and a 10/100 Mbps Ethernet MAC (EMAC). Both interfaces support full-duplex operation, jumbo frames, and hardware checksum offload. The GMAC is routed to PB0–PB17 in the LFBGA package, enabling direct PHY connection without level shifters.
Is the ATSAMA5D31A-CFUR pin-compatible with other SAMA5D3 series devices like ATSAMA5D34 or ATSAMA5D36?
No, the ATSAMA5D31A-CFUR is not pin-compatible with ATSAMA5D34 or ATSAMA5D36. While all SAMA5D3 variants share the same 324-ball LFBGA package footprint, Table 1-1 in the datasheet confirms functional differences: ATSAMA5D31 lacks GMAC and LCDC peripherals present in ATSAMA5D34/ATSAMA5D36, resulting in distinct pin assignments for those functions. Board designs must be validated per specific variant.
ATSAMA5D31A-CFUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 324-TFBGA
- Series:
- SAMA5D3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Core Processor:
- ARM® Cortex®-A5
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 536MHz
- Co-Processors/DSP:
- -
- RAM Controllers:
- LPDDR, LPDDR2, DDR2
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- LCD, Touchscreen
- Ethernet:
- 10/100Mbps (1)
- SATA:
- -
- USB:
- USB 2.0 (3)
- Voltage - I/O:
- 1.2V, 1.8V, 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- AES, SHA, TDES, TRNG
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 324-TFBGA (15x15)
- Additional Interfaces:
- I2C, MMC/SD/SDIO, SPI, SSC, UART, USART
ATSAMA5D31A-CFUR FAQ
1.How can I place an order for ATSAMA5D31A-CFUR through Aetrix?
Please submit a Request for Quotation (RFQ) for ATSAMA5D31A-CFUR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ATSAMA5D31A-CFUR reliable?
The price and inventory of ATSAMA5D31A-CFUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATSAMA5D31A-CFUR is usually 5 days.
3.What payment methods are accepted for ATSAMA5D31A-CFUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATSAMA5D31A-CFUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATSAMA5D31A-CFUR?
ATSAMA5D31A-CFUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATSAMA5D31A-CFUR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ATSAMA5D31A-CFUR?
For technical support, including ATSAMA5D31A-CFUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATSAMA5D31A-CFUR requirements.
6.How does Aetrix verify that ATSAMA5D31A-CFUR is sourced from the original manufacturer or authorized distributors?
All ATSAMA5D31A-CFUR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ATSAMA5D31A-CFUR meets industry standards.
7.What is the process for return or replacement of ATSAMA5D31A-CFUR?
All ATSAMA5D31A-CFUR units undergo pre-shipment inspection (PSI). If there is an issue with ATSAMA5D31A-CFUR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ATSAMA5D31A-CFUR part is unused and in its original packaging.
Return procedure for ATSAMA5D31A-CFUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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