IOVDD connection options

by <a href="http://community.silabs.com/t5/Welcome-and-Announcements/Community-Ranking-System-and-Recognition-Program/m-p/140490#U140490"><font color="#000000"><font size="2">Hero Employee</font></font> </a> amenleung on ‎03-01-2017 06:00 PM

Question

What is the IOVDD connection options on EFM32 devices?

Answer

EFM32 Series 0 devices:

It requires the AVDD, VDD_DREG, and IOVDD pins to be connected together.

 

EFM32 Series 1 devices:

The three main options for IOVDD are:

  • Connect IOVDD to AVDD
  • Connect IOVDD to DC-DC output (Typically = 1.8 V)
  • Connect IOVDD to an external/independent supply