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Preliminary Data Sheet
Rev.0.9
20.09.2011
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
10600-999
8500-777
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
Four bank
1K Page size
Activate period
2K Page size
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
SYMBOL
t IH(Base)
t IH(1V)
t CCD
t RC
t RRD
t RCD
t FAW
t RAS
t RTP
t WR
t DAL
t WTR
t RP
t MRD
MIN
140
240
4
49.5
max
4nCK,10ns
13.5
30
45
36
max
4nCK,7.5ns
15
t WR + t RP /t CK
max
4nCK,7.5ns
13.5
4
MAX
70 ’ 200
MIN
200
300
4
50.625
max
4nCK,7.5ns
13.125
37.5
50
37.5
max
4nCK,7.5ns
15
t WR + t RP /t CK
max
4nCK,7.5ns
13.125
4
MAX
70 ’ 200
Unit
ps
ps
t CK
ns
ns
ns
ns
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
t REFI
t REFI (IT)
7.8
3.9
7.8
3.9
μs
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
t AON
t AOF
t AONPD
t AOFPD
t ADC
-250
0.3
2
2
0.3
250
0.7
8,5
8,5
0.7
-300
0.3
2
2
0.3
300
0.7
8,5
8,5
0.7
ps
t CK
ns
ns
t CK
Exit self refresh to commands
max
max
not requiring a locked DLL
t XS
5nCK,tR
5nCK,tR
ns
Write levelling setup from rising
FC + 10ns
FC + 10ns
CK, CK# crossing to rising DQS,
t WLS
195
245
ps
DQS# crossing
Write levelling setup from rising
DQS, DQS# crossing to rising
t WLH
195
245
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
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