64Mb: x32
SDRAM
AC FUNCTIONAL CHARACTERISTICS
(Notes: 5, 6, 7, 8, 9, 11; notes appear on page 35)
PARAMETER
SYMBOL
CCD
-5
1
1
1
0
0
2
0
5
-
-55
1
1
1
0
0
2
0
5
-
-6
1
1
1
0
0
2
0
5
4
3
2
1
1
2
2
3
2
–
-7
1
1
1
0
0
2
0
5
4
3
2
1
1
2
2
3
2
1
UNITS NOTES
t
t
READ/WRITEcommandtoREAD/WRITEcommand
CKE to clock disable or power-down entry mode
CKE to clock enable or power-down exit setup mode
DQM to input data delay
DQM to data mask during WRITEs
DQMtodatahigh-impedanceduringREADs
WRITE command to input data delay
Data-intoACTIVEcommand
CK
CK
17
14
14
17
17
17
17
t
t
CKED
t
t
PED
CK
t
t
DQD
CK
t
t
DQM
CK
t
t
DQZ
CK
t
t
DWD
CK
t
t
CL = 3
CL = 2
CL = 1
DAL(3)
DAL(2)
DAL(1)
CK 15, 21
t
t
CK 15, 21
t
t
-
-
CK 15, 21
t
t
Data-intoPRECHARGEcommand
Last data-in to burst STOP command
Lastdata-intonewREAD/WRITEcommand
Lastdata-intoPRECHARGEcommand
LOADMODEREGISTERcommandtoACTIVEorREFRESHcommand
Data-outtohigh-impedancefromPRECHARGEcommand
DPL
2
1
1
2
2
3
-
2
1
1
2
2
3
-
CK 16, 21
t
t
BDL
CK
17
17
t
t
CDL
CK
t
t
RDL
CK 16, 21
t
t
MRD
CK
26
17
17
17
t
t
CL = 3
CL = 2
CL = 1
ROH(3)
ROH(2)
ROH(1)
CK
t
t
CK
t
t
-
-
CK
64Mb: x32 SDRAM
64MSDRAMx32_5.p65 – Rev. B; Pub. 6/02
MicronTechnology,Inc.,reservestherighttochangeproductsorspecificationswithoutnotice.
©2002,MicronTechnology,Inc.
34
MICRON [ MICRON TECHNOLOGY ]
