Product Support

SD Card Interface Specifications

SD card interface features

  • Host clock up to 208 MHz (SDR 104)
  • Supports card detection (insertion/removal) with dedicated card detection signal
  • Meets SD Host Controller Standard Specification version 3.0
  • Meets SD Physical Layer Specification version 3.01
  • Only supports SD memory
  • Supports 1.8v signal levels directly; requires an external level shifter to support devices that operate above 1.8V

Battery Path

There are four (4) through-hole connection points near the J4 VDC input connector; a +VBATTERY trace begins here and is routed to the power management device, EU2.

All battery solutions must be completely external to the expansion board except for standard communication and I/O interfaces. The EU2 device serves as the +VSYS voltage regulator.

OpenCV 3.0 / 3.1


OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning software library.

OpenCV was built to provide a common infrastructure for computer vision applications and to accelerate the use of machine perception in commercial products. Being a BSD-licensed product, OpenCV makes it easy for businesses to utilize and modify the code. See


There are a wide variety of accessories that you can get that work with the Intel® Joule™ compute module. This section discusses some options you have and provides design guidance to help you develop these items for your use case.

BIOS Update Steps

This section contains steps to flash the BIOS on your development platform for a Microsoft Windows* host computer.


The following instructions as based on the operator having a functional development platform and workstation that includes:


When developers compile, build, and run their applications, they may encounter runtime errors or other problems. There are several methods to debug different issues on the compute module.

Additional debug information can be found in these topics:

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