k4b2g0846b Samsung Semiconductor, Inc., k4b2g0846b Datasheet - Page 48

• Manufacturer Part Number: k4b2g0846b
• Description: 2gb B-die Ddr3 Sdram Specification
• Manufacturer: Samsung Semiconductor, Inc.

K4B2G04(08/16)46B
[ Table 47 ] Timing Parameters by Speed Bin (Cont.)
Power Down Timing
Exit Power Down with DLL on to any valid com-
mand;Exit Percharge Power Down with DLL
frozen to commands not requiring a locked DLL
Exit Precharge Power Down with DLL frozen to com-
mands requiring a locked DLL
CKE minimum pulse width
Command pass disable delay
Power Down Entry to Exit Timing
Timing of ACT command to Power Down entry
Timing of PRE command to Power Down entry
Timing of RD/RDA command to Power Down entry
Timing of WR command to Power Down entry
(BL8OTF, BL8MRS, BL4OTF)
Timing of WRA command to Power Down entry
(BL8OTF, BL8MRS, BL4OTF)
Timing of WR command to Power Down entry
(BL4MRS)
Timing of WRA command to Power Down entry
(BL4MRS)
Timing of REF command to Power Down entry
Timing of MRS command to Power Down entry
ODT high time without write command or with wirte
command and BC4
ODT high time with Write command and BL8
Asynchronous RTT tum-on delay (Power-Down with
DLL frozen)
Asynchronous RTT tum-off delay (Power-Down with
DLL frozen)
ODT turn-on
RTT_NOM and RTT_WR turn-off time from ODTLoff
reference
RTT dynamic change skew
First DQS pulse rising edge after tDQSS margining
mode is programmed
DQS/DQS delay after tDQS margining mode is pro-
grammed
Setup time for tDQSS latch
Write leveling hold time from rising DQS, DQS cross-
ing to rising CK, CK crossing
Write leveling output delay
Write leveling output error
ODT Timing
Write Leveling Timing
Parameter
Speed
tWRAPDEN
tWRAPDEN
tMRSPDEN
tWLDQSEN
tACTPDEN
tREFPDEN
tWRPDEN
tWRPDEN
tPRPDEN
tRDPDEN
tWLMRD
tAONPD
Symbol
tCPDED
tAOFPD
tXPDLL
ODTH4
ODTH8
tWLOE
tAON
tWLS
tWLH
tWLO
tCKE
tAOF
tADC
tXP
tPD
WL +2 +WR
tMOD(min)
tCKE(min)
RL + 4 +1
tCK(avg))
tCK(avg))
(10nCK,
+WR +1
WL + 4
WL + 4
WL + 2
(3nCK,
(3nCK,
+(tWR/
+(tWR/
7.5ns)
7.5ns)
24ns)
-400
MIN
max
max
max
325
325
0.3
0.3
+1
40
25
1
1
1
1
4
6
2
2
0
0
DDR3-800
9*tREFI
MAX
400
Page 48 of 61
8.5
8.5
0.7
0.7
9
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
WL +2 +WR
tMOD(min)
tCKE(min)
RL + 4 +1
tCK(avg))
tCK(avg))
5.625ns)
(10nCK,
+WR +1
WL + 4
+(tWR/
WL + 4
WL + 2
+(tWR/
(3nCK,
(3nCK,
7.5ns)
24ns)
-300
MIN
max
max
max
245
245
0.3
0.3
+1
40
25
1
1
1
1
4
6
2
2
0
0
DDR3-1066
9*tREFI
MAX
300
8.5
8.5
0.7
0.7
9
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
WL +2 +WR
(3nCK,6ns)
tMOD(min)
tCKE(min)
RL + 4 +1
tCK(avg))
tCK(avg))
5.625ns)
(10nCK,
+WR +1
(3nCK,
WL + 4
+(tWR/
WL + 4
WL + 2
+(tWR/
24ns)
max
max
max
-250
MIN
195
195
0.3
0.3
+1
40
25
1
1
1
1
4
6
2
2
0
0
DDR3-1333
9*tREFI
MAX
250
8.5
8.5
0.7
0.7
9
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2Gb DDR3 SDRAM
Rev. 1.0 December 2008
WL +2 +WR
(3nCK,6ns)
(3nCK,5ns)
tMOD(min)
tCKE(min)
RL + 4 +1
tCK(avg))
tCK(avg))
(10nCK,
+WR +1
WL + 4
+(tWR/
WL + 4
WL + 2
+(tWR/
24ns)
MIN
max
max
max
-225
165
165
0.3
0.3
+1
40
25
1
1
1
1
4
6
2
2
0
0
DDR3-1600
9*tREFI
MAX
225
8.5
8.5
0.7
0.7
7.5
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
tCK(avg)
tCK(avg)
Units
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
tCK
tCK
tCK
ns
ns
ps
ps
ps
ns
ns
20,21
Note
15
20
20
10
10
7,f
8,f
2
9
9
3
3
f