Can I reprogram the volatile key after the key of Volatile Key with Tamper Protection Bit Set security mode is erased in Stratix® V/Arria® V/Cyclone® V devices?

Description

No. You cannot program any key if the Tamper Protection Bit is set.

Resolution

Ensure the required external battery V_CCBAT is provided all the time if you use the Volatile Key with Tamper Protection Bit Set security mode.

This information is updated in the Stratix® V Device Handbook: Volume 1: Device Interfaces and Integration, Arria® V Device Handbook: Volume 1: Device Interfaces and Integration, and Cyclone® V Device Handbook: Volume 1: Device Interfaces and Integration to clarify.