App note: Common IC interface problems

Posted on Sunday, July 22nd, 2012 in app notes by DP

A somewhat humorous app note describing the common IC interface protocols like I2C, SPI, and GPIO. Also covered are some problem with these interfaces that turn happy faces to sad.

How can an interface change a happy face to a sad face? Engineers have happy faces when an interface works properly. Sad faces indicate failure somewhere. Because interfaces between microprocessors and ICs are simple—even easy—they are often ignored until interface failure causes sad faces all around. In this article, we discuss a common SPI error that can be almost impossible to find in a large system. Links to interface tutorial information are provided for complete information. Noise as a system issue and ICs to minimize its effects are also described.

This entry was posted on Sunday, July 22nd, 2012 at 9:00 pm and is filed under app notes. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Nathan Johnson: 100 channels. Not many are legal in any given area. Be sure to comply with local laws.
  • William Brodie-Tyrrell: It's getting to the point where it's cheaper and definitely easier to use a Pi Zero or similar and a $20 3G USB dongle. Power...
  • KH: IIRC most of the actual operating system of modern HDDs is in one of the platter(s); the stuff on the 25VF010 is a bootup firmware......
  • Trev: I don't know of any inexpensive 3G modules (prices start around $US 50), but it does explain why 2G modules are relatively inexpensive by comparison....
  • Zonie: This site Rocks!