Define retention time

EZ-BIST tool usage, BFL flow, BII flow, memory grouping
Post Reply
iSTART
Posts: 757
Joined: 08 Dec 2020, 15:53

Define retention time

Post by iSTART »

In some EZ-BIST’s memory testing algorithms, they allow memories to do retention testing. For example,

March-RET algorithm is <(wb) (SLP) <(rb) >(wa) (SLP) >(ra)
Where (SLP) indicates sleep time and unit is 1T.

If want to extend the SLP time more than 1T, designer can specify the retention time to parameter “retention_time” in BFL’s BIST group settings.

For example,

BFL define{BIST}
……..
set retention_time = ##.##
…….
End define{BIST}


Where ##.## unit is micro second(us), for example 1.0 represents retention time is 1 us
Post Reply