®
IS42S81600A, IS42S16800A, IS42S32400A
IS42LS81600A, IS42LS16800A, IS42LS32400A
ISSI
OPERATING FREQUENCY / LATENCY RELATIONSHIPS
SYMBOL PARAMETER
-7
7
-10.
UNITS
ns
—
Clock Cycle Time
10
100
1
—
OperatingFrequency
133
1
MHz
tCCD
tCKED
tPED
tDQD
tDQM
tDQZ
tDWD
tDAL
tDPL
tBDL
tCDL
tRDL
tMRD
READ/WRITE command to READ/WRITE command
CKE to clock disable or power-down entry mode
CKE to clock enable or power-down exit setup mode
DQM to input data delay
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
1
1
1
1
0
0
DQM to data mask during WRITEs
DQM to data high-impedance during READs
WRITE command to input data delay
Data-in to ACTIVE command
0
0
2
2
0
0
5
4
Data-intoPRECHARGEcommand
Last data-in to burst STOP command
Last data-in to new READ/WRITE command
Last data-in to PRECHARGE command
2
2
1
1
1
1
2
2
LOAD MODE REGISTER command
to ACTIVE or REFRESH command
2
2
tROH
Data-outtohigh-impedancefrom
PRECHARGEcommand
CL = 3
CL = 2
3
2
3
2
cycle
22
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
ADVANCEDINFORMATION Rev. 00A
06/01/02
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
