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The SAMA5D27 Wireless SOM1 (WLSOM1) is a small, single-sided System-on-Module (SoM) from Microchip which combines a high-performance microprocessor based on the Arm® Cortex®-A5 core with Wi-Fi® and Bluetooth® wireless connectivity.

The SoM form factor and high level of integration provide valuable benefits to designers who need to run applications on the Linux operating system and to transfer data over Wi-Fi and Bluetooth networks:

  • Shortens development time
  • Reduces development risk and eliminates the need for RF design expertise
  • Simplifies wireless certification
  • Accelerates integration with cloud services
  • Integrated support for AWS Greengrass and Microsoft Azure cloud services
  • Pre-provisioned ECC608 Secure Element
  • Arm TrustZone® support
  • Reduces component count and vendor list, and simplifies inventory and production process

The Cortex-A5 processor core is supported by a 2Gbit LPDDR2 DRAM system-in-package which runs at up to 500MHz. The SoM also includes Microchip’s WILC3000 Wi-Fi /Bluetooth dual-mode wireless connectivity module. This connectivity module features a u.FL connector for an antenna. It supports high-speed data transfers at rates up to 72Mbits/s in Wi-Fi mode, and up to 3Mbits/s in Bluetooth mode.

The module’s maximum data rate in Bluetooth Low Energy mode is 1Mbit/s.

The module is supplied pre-certified for operation in the US, Canada and Europe. Microchip also supplies a list of qualified antennas for use with the module.

The SoM’s MCP16502 Power Management IC (PMIC) provides a space- and feature-optimized power system for the module. Featuring 94 I/Os, the SoM board has a footprint of just 41mm x 41mm and is 3.3mm high.

The ATSAMA5D27-WLSOM1 is supplied with free Linux distribution and bare metal C code examples.

  • 10/100 Ethernet PHY
  • USB Device and Host interfaces
  • Two CAN interfaces
  • 64Mbit serial Quad I/O Flash memory
  • 128kbytes of SRAM
  • Cache memory
  • 32kbytes in L1, 128kbytes in L2
  • Graphics controller
  • 18-bit graphic LCD controller
  • Camera interface
  • 51-channel DMA controller
  • Operating-temperature range: -40°C to 85°C
  • IoT devices
  • Smart appliances
  • Healthcare equipment
  • Human-machine interfaces
  • Access control panels
  • Home automation
  • Industrial automation


FTM Development Board

The USB-powered ATSAMA5D27-WLSOM1-EK1 features serial debug interfaces and a 20-pin JTAG connector, two USB connectors, one Ethernet port and an SD card slot. It also has two mikroBUS™ connectors and two XPRO PTC connectors, a Wi-Fi/Bluetooth antenna, and may optionally be supplied with a 5” WVGA touchscreen LCD.