2.7.1. eFlash cache

The IoT Subsystem includes an AHB instruction cache connected to the eFlash Controller to reduce eFlash accesses due to execute in place instructions fetches. This reduces the power consumption of the IoT Subsystem.

Note

Because the cache is only for instructions, AHB writes are bypassed and ignored. If a write changes program memory, software must invalidate the cache region.

The eFlash cache has the following features:

Copyright © 2015. All rights reserved.ARM DDI 0551A
Non-ConfidentialID120415