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Table Of Contents
11.8 RAM Properties
The following table shows the different access properties of the three RAM blocks, according the different
modes described in the previous chapters.
Table 11-2. Access to RAM
Access Condition DATA RAM TAG RAM METADATARAM
CPU access when CMCC
DISABLED
R/W no R/W - hardfault no R/W - hardfault
CPU access when CMCC
ENABLED
CACHE section configured: R/
W
(1)
TCM section configured: R/W
no R/W - hardfault no R/W - hardfault
Debugger access when
CMCC DISABLED
R/W R/W R/W
Debugger access when
CMCC ENABLED
CACHE section configured: R/
W
(1)
TCM section configured: R/W
no R/W no R/W
Note: 
1. A write operation in this zone can corrupt the coherency of the cache. An invalidate operation may
be needed.
Related Links
11.7 DEBUG Mode
SAM D5x/E5x Family Data Sheet
CMCC - Cortex M Cache Controller
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Datasheet
DS60001507E-page 87