cancel
Showing results for 
Search instead for 
Did you mean: 

Knowledge Base Articles

F-RAM Contents when Shipped from Infineon – KBA88164

Anonymous
Not applicable

F-RAM Contents when Shipped from Infineon – KBA88164

Version: *B

 

Translation - Japanese: サイプレスから出荷時のFRAMの中身について - KBA88164 - Community Translated (JA)

 

Question:

Are F-RAM contents programmed when shipped from Infineon?

Answer:

Infineon ships F-RAM devices with 0x00 except the 8 Mb and 16 Mb ExcelonTM F-RAMs offered in 24-FBGA package, which are shipped with random (or garbage) data. However, inspection routines at customer or contract manufacturer sites often reprogram these values to a known repeating pattern such as 0xAA, 0x55, 0x00, 0xFF, 0xA5, and 0x5A. Do not assume that the F-RAM is in a set programmed state. If your system routines use the F-RAM contents to determine first-time system configuration and cold or warm boot status, you must always program the device with a known data pattern as part of the final system manufacturing test.

Version history
Revision #:
2 of 2
Last update:
‎May 04, 2021 10:13 PM
Updated by: