ATSAMA5D27-SOM1

Overview

The ATSAMA5D27-SOM1 is a System-on-Module (SOM) developed by Microchip Technology, designed to simplify the integration of industrial-grade Linux systems. It integrates the ATSAMA5D27C-D1G-CU System-in-Package (SiP), which contains an ARM Cortex-A5 MPU running at 500 MHz, with essential peripheral components on a single-sided PCB. The module consolidates power management, non-volatile boot memory, Ethernet PHY, and 1 Gbit DDR2 SDRAM. This integration addresses signal integrity challenges for high-speed interfaces and reduces electromagnetic compatibility (EMC) design complexity. The compact form factor measures 40 mm x 38 mm with a 0.8 mm pitch, facilitating manual soldering and reducing overall PCB complexity.

Feature Summary

• Integrated SiP containing SAMA5D27 MPU, 128 MB DDR2 SDRAM, MIC2800 PMIC, KSZ8081RNAIA Ethernet PHY, SST26VF064BT QSPI Flash, and 24AA02E48T-I/OT EEPROM.
• ARM Cortex-A5 core operating at up to 500 MHz with NEON multimedia engine and hardware security features including TrustZone and secure boot.
• Compact 40 mm x 38 mm single-sided PCB design with 103 I/Os, eliminating manual impedance matching for DDR interfaces.
• Includes MAC address in integrated serial EEPROM and supports free Linux distribution and bare-metal C code examples.

Applications

• Industrial Human Machine Interfaces (HMI)
• White goods control systems
• Kiosks and Point-of-Sale (POS) terminals

Procurement Notes

Verify component authenticity through authorized Microchip distributors or direct channels. Confirm RoHS3 compliance status as specified in current datasheets. Check for specific assembly site variations via PCN documentation if required for supply chain traceability. Ensure handling procedures adhere to moisture sensitivity level requirements during storage and reflow processes.

Selection Notes

Select this SOM when minimizing board space and simplifying high-speed DDR/Ethernet layout is critical. It is suitable for designs requiring immediate access to validated Linux software stacks. Consider transitioning to the standalone SiP or MPU if custom peripheral integration beyond the module's scope is needed, leveraging the same underlying processor architecture.

Part Context

This module is part of the SMART SAMA5D2 series, based on the ARM Cortex-A5 architecture. It serves as a reference implementation for the ATSAMA5D27C-D1G-CU SiP. The SOM allows designers to bypass complex signal integrity issues associated with DDR and PHY routing, accelerating time-to-market for embedded applications requiring robust connectivity and processing power.

Replacement Considerations

For pin-compatible replacements within the SAMA5D2 family, evaluate other MPU variants such as the ATSAMA5D27A-CN, noting that package differences may exist. Direct SOM replacements are limited; consider evaluating newer Microchip SOMs like those based on the SAM9x75 if higher performance or different interface requirements are necessary.