Datasheet

DTM65521A
2 GB - 256Mx72, 240-Pin FB-DIMM
Document 06054, Revision A, 1-Aug-08, Dataram Corporation © 2008 Page 12
AC Operating Conditions (AC operating conditions unless otherwise noted)
Parameter Symbol
Min
Value
Max
Value
Unit Note
DQ Input Pulse Width
t
DIPW
0.35 - CLK
Read DQS Preamble Time
t
RPRE
0.9 1.1 CLK
Read DQS Postamble Time
t
RPST
0.4 0.6 CLK
Write DQS Preamble Hold Time
t
WPRE
0.35 - CLK
Write DQS Postamble Time
t
WPST
0.4 0.6 CLK
Mode Register Set Delay
t
MRD
2 - CLK
Exit Self Refresh to Non-Read Command
t
XSNR
tRFC + 10
-
ns
Exit Self Refresh to Read Command
t
XSRD
200 - CLK
- 7.8 μs 1
Average Periodic Refresh Interval
t
REFI
- 3.9 μs 2
NOTES:
1. For 0 C < T
Case
≤ 85 C
2. For 85 C < T
Case
≤ 95 C