preliminary Data Sheet
Rev.0.9
15.11.2011
DDR3 SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND RECOMMENDED
AC OPERATING CONDITIONS (Continued)
(0°C ≤ T CASE ≤ + 85°C; V DDQ = +1.5V ± 0.075V, V DD = +1.5V ± 0.075V)
AC CHARACTERISTICS
12800-11-11-11
10600-9-9-9
PARAMETER
CTRL, CMD, Addr hold to CK,
CK#
CTRL, CMD, Addr hold to CK,
CK# V REF @ 1V/ns
CAS# to CAS# command delay
ACTIVE to ACTIVE (same bank)
command period
ACTIVE bank a to ACTIVE bank
b command
ACTIVE to READ or WRITE
delay
SYMBOL
t IH(Base)
t IH(1V)
t CCD
t RC
t RRD
t RCD
MIN
120
220
4
48.75
max
4nCK,6ns
13.75
MAX
-
-
-
-
-
-
MIN
140
240
4
49.5
max
4nCK,6ns
13.5
MAX
-
-
-
-
-
-
Unit
ps
ps
t CK
ns
ns
ns
Four bank
Activate period
1K Page size
2K Page size
t FAW
30
40
-
-
30
45
-
-
ns
ACTIVE to PRECHARGE
command
Internal READ to precharge
command delay
Write recovery time
Auto precharge write recovery +
precharge time
Internal WRITE to READ
command delay
PRECHARGE command period
LOAD MODE command cycle
time
t RAS
t RTP
t WR
t DAL
t WTR
t RP
t MRD
35
max
4nCK,7.5ns
15
t WR + t RP /t CK
max
4nCK,7.5ns
13.75
4
70 ’ 200
-
-
-
-
-
-
36
max
4nCK,7.5ns
15
t WR + t RP /t CK
max
4nCK,7.5ns
13.5
4
70 ’ 200
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
t CK
REFRESH to ACTIVE or
REFRESH to REFRESH
t RFC
260
70 ’ 200
260
70 ’ 200
ns
command interval
Average periodic refresh interval
0 °C ≤ T CASE ≤ 85°C
85 °C < T CASE ≤ 95°C
RTT turn-on from ODTL on
reference
RTT turn-on from ODTL off
reference
Asynchronous RTT turn-on
delay (power Down with DLL off)
Asynchronous RTT turn-off
delay (power Down with DLL off)
RTT dynamic change skew
Exit self refresh to commands
not requiring a locked DLL
t REFI
t REFI (IT)
t AON
t AOF
t AONPD
t AOFPD
t ADC
t XS
-
-
-225
0.3
2
2
0.3
max
5nCK,tR
FC + 10ns
7.8
3.9
225
0.7
8.5
8.5
0.7
-
-
-
-250
0.3
2
2
0.3
max
5nCK,tR
FC + 10ns
7.8
3.9
250
0.7
8.5
8.5
0.7
-
μs
ps
t CK
ns
ns
t CK
ns
Write levelling setup from rising
CK, CK# crossing to rising DQS,
t WLS
165
-
195
-
ps
DQS# crossing
Write levelling setup from rising
DQS, DQS# crossing to rising
t WLH
165
-
195
-
ps
CK, CK# crossing
First DQS, DQS# rising edge
DQS, DQS# delay
t WLMRD
t WLDQSEN
40
25
-
-
40
25
-
-
t CK
t CK
Swissbit AG
Industriestrasse 4
CH – 9552 Bronschhofen
Fon: +41 (0) 71 913 03 03
Fax: +41 (0) 71 913 03 15
www.swissbit.com
eMail: info@swissbit.com
Page 10
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