MicroZed is a System-on-Module (SOM) developed, manufactured, and supported by Avnet. This SOM is based on the Xilinx Zynq-7000 device family, including device sizes of 7010 and 7020 as well as both commercial and industrial temperature grades. This SOM was first introduced by Avnet in July 2013 (see https://www.businesswire.com/news/home/20130731005551/en/Avnet-Electronics-Marketing-Releases-the-MicroZed-Next-Generati… ).
MicroZed has undergone several revisions over the years to make various improvements and to account for components going obsolete. That is the case once again, as Avnet is preparing to migrate MicroZed from Rev G to Rev H. The primary reason behind the update to Rev H was to replace a few end-of-life parts. Avnet's typical commitment to a SOM/SBC is 10 years, as explained in Warranty, RoHS, and Lifecycle for Avnet SOMs/SBCs . At this point, there are only 2.5 years left in the 10-year lifecycle for MicroZed. However, Zynq-7000 and MicroZed are still very popular, and Avnet decided to make the investment to update MicroZed once again to potentially allow many more years into the future.
While we had the design open, there were several minor enhancements that were also made, based on what we have learned over the years. The specific issues are explained in the MicroZed_RevG_Errata_201105 as well as how these issues were addressed on Rev H in the Product Change Notification PCN 20005 (MicroZed Rev H) .
Note that MicroZed Rev H is fully backward-compatible with Rev G and earlier Revs. A bitstream that works on a previous board will work on the updated revision.
I am now working with the Element14 team to get several more design documents specific to Rev H posted on the MicroZed product page. In the meantime, I have uploaded these documents to the MicroZed Community Documents page if you'd like an early look at them.
The Rev H production build is underway now, and we expect to have them in stock by March 2021. The new part numbers are: