# bbram Battery back Up RAM  RCM6600W

**URL:** <https://forums.digi.com/t/bbram-battery-back-up-ram-rcm6600w/17884>\
**Category:** Rabbit Software\
**Tags:** bbram\
**Created:** [January 12, 2017, 3:17pm UTC](https://forums.digi.com/t/bbram-battery-back-up-ram-rcm6600w/17884 "2017-01-12T15:17:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![chuckllx](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chuckllx](https://forums.digi.com/u/chuckllx)\
**Post date:** [January 12, 2017, 3:17pm UTC](https://forums.digi.com/t/bbram-battery-back-up-ram-rcm6600w/17884/1 "2017-01-12T15:17:21Z")

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can the RCM6600W utilize the ‘bbram’ for variables ?

ie.

bbram unsigned int data1;

and keep this intact after power is cycled ?

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**Author:** ![Campbell](https://avatars.discourse-cdn.com/v4/letter/c/97f17d/32.png) [@Campbell](https://forums.digi.com/u/Campbell)\
**Post date:** [January 12, 2017, 4:16pm UTC](https://forums.digi.com/t/bbram-battery-back-up-ram-rcm6600w/17884/2 "2017-01-12T16:16:06Z")

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you might want to check Dynamic C User’s Manual  
[http://ftp1.digi.com/support/documentation/019-0167\_L.pdf](http://ftp1.digi.com/support/documentation/019-0167_L.pdf)

See page 198  
IMPORTANT: bbram does not provide data integrity; instead, use the keyword protected to ensure integrity  
of data across power failures.

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<div class="post-metadata">

**Author:** ![Campbell](https://avatars.discourse-cdn.com/v4/letter/c/97f17d/32.png) [@Campbell](https://forums.digi.com/u/Campbell)\
**Post date:** [January 12, 2017, 4:19pm UTC](https://forums.digi.com/t/bbram-battery-back-up-ram-rcm6600w/17884/3 "2017-01-12T16:19:22Z")

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might also want to look at this

[http://www.digi.com/support/forum/56825/stored-in-sram-rcm6700](http://www.digi.com/support/forum/56825/stored-in-sram-rcm6700)