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Table 56: Electrical Characteristics and AC Operating Conditions (Continued)
Notes 1–8 apply to the entire table
Parameter
Symbol
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
Units Notes
Min
Max
Min
Max
Min
Max
Min
Max
DQS, DQS# High-Z time (RL + BL/2)
tHZ (DQS)
–
400
–
300
–
250
–
225
ps
DQS, DQS# differential READ preamble
tRPRE
0.9
0.9
0.9
0.9
CK
DQS, DQS# differential READ postamble
tRPST
0.3
0.3
0.3
0.3
CK
Command and Address Timing
DLL locking time
tDLLK
512
–
512
–
512
–
512
–
CK
CTRL, CMD, ADDR
setup to CK,CK#
Base (specification)
tIS
AC175
200
–
125
–
65
–
45
–
ps
VREF @ 1 V/ns
375
–
300
–
240
–
220
–
ps
CTRL, CMD, ADDR
setup to CK,CK#
Base (specification)
tIS
AC150
350
–
275
–
190
–
170
–
ps
VREF @ 1 V/ns
500
–
425
–
340
–
320
–
ps
CTRL, CMD, ADDR hold
from CK,CK#
Base (specification)
tIH
DC100
275
–
200
–
140
–
120
–
ps
VREF @ 1 V/ns
375
–
300
–
240
–
220
–
ps
Minimum CTRL, CMD, ADDR pulse width
tIPW
900
–
780
–
620
–
560
–
ps
ACTIVATE to internal READ or WRITE delay
tRCD
ns
PRECHARGE command period
tRP
ns
ACTIVATE-to-PRECHARGE command period
tRAS
ns
ACTIVATE-to-ACTIVATE command period
tRC
ns
ACTIVATE-to-ACTIVATE
minimum command
period
1KB page size
tRRD
MIN = greater of
4CK or 10ns
MIN = greater of
4CK or 7.5ns
MIN = greater of
4CK or 6ns
MIN = greater of
4CK or 6ns
CK
2KB page size
MIN = greater of 4CK or 10ns
MIN = greater of 4CK or 7.5ns
CK
Four ACTIVATE
windows
1KB page size
tFAW
40
–
37.5
–
30
–
30
–
ns
2KB page size
50
–
50
–
45
–
40
–
ns
Write recovery time
tWR
MIN = 15ns; MAX = n/a
ns
Delay from start of internal WRITE
transaction to internal READ command
tWTR
MIN = greater of 4CK or 7.5ns; MAX = n/a
CK
READ-to-PRECHARGE time
tRTP
MIN = greater of 4CK or 7.5ns; MAX = n/a
CK
CAS#-to-CAS# command delay
tCCD
MIN = 4CK; MAX = n/a
CK
Auto precharge write recovery + precharge
time
tDAL
MIN = WR + tRP/tCK (AVG); MAX = n/a
CK
MODE REGISTER SET command cycle time
tMRD
MIN = 4CK; MAX = n/a
CK
MODE REGISTER SET command update delay
tMOD
MIN = greater of 12CK or 15ns; MAX = n/a
CK
2Gb:
x4,
x8,
x16
DDR3
SDRAM
Electrical
Characteristics
and
AC
Operating
Conditions
PDF:
09005aef826aaadc
2Gb_DDR3_SDRAM.pdf
–
Rev.
K
04/10
EN
80
Micron
Technology,
Inc.
reserves
the
right
to
change
products
or
specifications
without
notice.
2006
Micron
Technology,
Inc.
All
rights
reserved.