IS42S16400F
IC42S16400F
OPERATING FREQUENCY / LATENCY RELATIONSHIPS
SYMBOL PARAMETER
-6
6ꢀ
-7
7ꢀ
-5
5ꢀ
UNITS
ns
ꢀ
ꢀ
—ꢀ
ClockꢀCycleꢀTimeꢀ
—ꢀ
OperatingꢀFrequencyꢀ
166ꢀ
1ꢀ
143ꢀ
1ꢀ
200ꢀ
1ꢀ
MHz
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
tc c D ꢀ
tc k e D ꢀ
tp e D ꢀ
tD q D ꢀ
tD q m ꢀ
tD q z ꢀ
tD w D ꢀ
tD a l ꢀ
tD p l ꢀ
tb D l ꢀ
tc D l ꢀ
tr D l ꢀ
READ/WRITEꢀcommandꢀtoꢀREAD/WRITEꢀcommandꢀ
CKEꢀtoꢀclockꢀdisableꢀorꢀpower-downꢀentryꢀmodeꢀ
CKEꢀtoꢀclockꢀenableꢀorꢀpower-downꢀexitꢀsetupꢀmodeꢀ
DQMꢀtoꢀinputꢀdataꢀdelayꢀ
1ꢀ
1ꢀ
1ꢀ
1ꢀ
1ꢀ
1ꢀ
0ꢀ
0ꢀ
0ꢀ
DQMꢀtoꢀdataꢀmaskꢀduringꢀWRITEsꢀ
DQMꢀtoꢀdataꢀhigh-impedanceꢀduringꢀREADsꢀ
WRITEꢀcommandꢀtoꢀinputꢀdataꢀdelayꢀ
Data-inꢀtoꢀACTIVEꢀcommandꢀ
0ꢀ
0ꢀ
0ꢀ
2ꢀ
2ꢀ
2ꢀ
0ꢀ
0ꢀ
0ꢀ
5ꢀ
5ꢀ
5ꢀ
Data-inꢀtoꢀPRECHARGEꢀcommandꢀ
Lastꢀdata-inꢀtoꢀburstꢀSTOPꢀcommandꢀ
Lastꢀdata-inꢀtoꢀnewꢀREAD/WRITEꢀcommandꢀ
Lastꢀdata-inꢀtoꢀPRECHARGEꢀcommandꢀ
2ꢀ
2ꢀ
2ꢀ
1ꢀ
1ꢀ
1ꢀ
1ꢀ
1ꢀ
1ꢀ
2ꢀ
2ꢀ
2ꢀ
tm r D ꢀ
ꢀ
LOADꢀMODEꢀREGISTERꢀcommandꢀ
toꢀACTIVEꢀorꢀREFRESHꢀcommand
2ꢀ
2ꢀ
2ꢀ
ꢀ
ꢀ
tr o h ꢀ
ꢀ
Data-outꢀtoꢀhigh-impedanceꢀfromꢀ
PRECHARGEꢀcommandꢀ
CLꢀ=ꢀ3ꢀ
CLꢀ=ꢀ2ꢀ
3ꢀ
2ꢀ
3ꢀ
2ꢀ
3ꢀ
2ꢀ
cycle
cycle
Note:
1. A minimum setup time t ꢀ+ꢀ1CLKꢀmustꢀbeꢀsatisfied.
ss
AC TEST CONDITIONS (Input/OutputꢀReferenceꢀLevel:ꢀ1.4V)
Input Load
Output Load
tCK
tCHI
t
CL
2.0V
50 Ω
1.4V
0.8V
CLK
I/O
+1.5V
tCS
tCH
2.0V
1.4V
50 pF
INPUT
0.8V
tAC
t
OH
OUTPUT
1.4V
1.4V
14
Integrated Silicon Solution, Inc. — www.issi.com
Rev. A
03/19/08
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
