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W631GG6KB
AC Timing and Operating Condition for -12/12I/12A/12K/-15/15I/15A/15K speed grades, continued
SYMBOL
SPEED GRADE
DDR3-1600
(-12/12I/12A/12K)
DDR3-1333
(-15/15I/15A/15K)
UNITS NOTES
PARAMETER
MIN.
MAX.
MIN.
MAX.
Command and Address Timing
t WR
t MRD
t MOD
t CCD
WRITE recovery time
Mode Register Set command cycle time
Mode Register Set command update delay
CAS# to CAS# command delay
15
4
max(12nCK,
15nS)
4
?
?
?
?
15
4
max(12nCK,
15nS)
4
?
?
?
?
nS
nCK
nCK
8, 26
t DAL (min)
Auto precharge write recovery + precharge
time
WR + roundup(t RP (min)/ t CK (avg))
nCK
6
t MPRR
t RRD
t FAW
t IS(AC175)
t IS(AC150)
t IH(DC100)
t IPW
Multi-Purpose Register Recovery Time
ACTIVE to ACTIVE command period for 2KB
page size
Four activate window for 2KB page size
Base specification
Command and Address
setup time to CK, CK#
V REF @ 1 V/nS
Base specification
Command and Address
setup time to CK, CK#
V REF @ 1 V/nS
Base specification
Command and Address
hold time from CK, CK#
V REF @ 1 V/nS
Control, address and control input pulse width
for each input
1
max(4nCK,
7.5nS)
40
45
220
170
320
120
220
560
?
?
?
?
1
max(4nCK,
7.5nS)
45
65
240
190
340
140
240
620
?
?
?
?
nCK
nS
pS
pS
pS
pS
pS
pS
pS
29
8
8
9, 41
9, 41, 42
9, 41
9, 41, 42
9, 41
9, 41, 42
10
Calibration Timing
t ZQ init
t ZQ oper
Power-up and RESET calibration time
Normal operation Full calibration time
max(512nCK,
640nS)
max(256nCK,
320nS)
?
?
max(512nCK,
640nS)
max(256nCK,
320nS)
?
?
t ZQCS
Normal operation Short calibration time
max(64nCK,
80nS)
?
max(64nCK,
80nS)
?
33
Reset Timing
t XPR
Exit Reset from CKE HIGH to a valid
command
max(5nCK,
120nS)
?
max(5nCK,
120nS)
?
Self Refresh Timing
t XS
Exit Self Refresh to commands not requiring a
locked DLL
max(5nCK,
120nS)
?
max(5nCK,
120nS)
?
34
t XSDLL
t CKESR
t CKSRE
t CKSRX
Exit Self Refresh to commands requiring a
locked DLL
Minimum CKE low width for Self Refresh entry
to exit timing
Valid Clock Requirement after Self Refresh
Entry (SRE)
Valid Clock Requirement before Self Refresh
Exit (SRX)
t DLLK (min)
t CKE (min) +
1nCK
max(5 nCK,
10nS)
max(5 nCK,
10nS)
?
?
?
?
t DLLK (min)
t CKE (min) +
1nCK
max(5 nCK,
10nS)
max(5 nCK,
10nS)
?
?
?
?
nCK
35
Refresh Timing
t RFC
REF command to A CT or REF command time
-40°C ≤ T CASE ≤ 85°C*
110
?
?
7.8
110
?
?
7.8
nS
μ S
36
t REFI
Average periodic
refresh Interval
0°C < T CASE ≤ 85°C
85°C ≤ T CASE ≤ 95°C
95°C < T CASE ≤ 105°C*
?
?
?
7.8
3.9
3.9
?
?
?
7.8
3.9
3.9
μ S
μ S
μ S
* -40°C ≤ T CASE ≤ 85°C is for 12I/12A/12K/15I/15A/15K grade only, 95°C < T CASE ≤ 105°C is for 12K/15K grade only.
Publication Release Date: Dec. 09, 2013
Revision A05
- 144 -
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