The PIC18F8720/8620/6720/6620 parts you have received conform functionally to the Device Data Sheet (DS39609 B), except for the anomalies described below. All of the issues listed here will be addressed in future revisions of the PIC18F8720/8620/6720/6620 silicon. The following silicon errata apply only to PIC18F8720/8620/6720/6620 devices with these Device/Revision IDs: PIC18F8720/8620/6720/6620 PIC18F8720/8620/6720/6620 Rev. A4 Silicon/Data Sheet Errata The PIC18F8720/8620/6720/6620 parts you have 2. Module: External Memory Interface received conform functionally to the Device Data Sheet (PIC18F8620 only) (DS39609B), except for the anomalies described In Extended Microcontroller mode, or Micro- below. processor mode, the external memory interface is All of the issues listed here will be addressed in future inactive from 20000h to 2FFFFh. ALE and WRL revisions of the PIC18F8720/8620/6720/6620 silicon. signals are inactive between 20000h and 2FF……