User Manual

240-Pin Unbuffered DIMM DDR3 SDRAM
http://www.supertalent.com/oem Products and Specifications discussed herein are subject to change without notice
8 © 2006 Super Talent Tech., Corporation.
11.3 AC Timing Parameters & Specifications (con’t)
DDR3-1066 DDR3-1333
Parameter Symbol
min max min max
Units Notes
Multi-Purpose Register Recovery Time tMPRR
1 - 1 - nCK
ACTIVE to PRECHARGE command period tRAS 37.5 70,000 36 70,000
ns
e
ACTIVE to ACTIVE command period for 1KB page size tRRD
max
(4tCK,7.5ns)
-
max
(4tCK,6ns)
-
e
ACTIVE to ACTIVE command period for 2KB page size tRRD
max
(4tCK,10ns)
-
max
(4tCK,7.5ns)
-
e
Four activate window for 1KB page size tFAW 37.5
-
30
- ns
e
Four activate window for 2KB page size tFAW 50
-
45
- ns
e
Command and Address setup time to CK, CK
referenced to Vih(ac) / Vil(ac) levels
tIS(base) 125 - 65 -
ps b,16
Command and Address hold time from CK, CK
referenced to Vih(ac) / Vil(ac) levels
tIH(base) 200 - 140 -
ps b,16
Command and Address setup time to CK, CK
referenced to Vih(ac) / Vil(ac) levels
tIS(base)
AC150
- - 65+125 -
ps b,16,27
Control & Address Input pulse width for each input tIPW 780 - 620 -
ps 28
Calibration Timing
Power-up and RESET calibration time tZQinitI 512 - 512 -
tCK
Normal operation Full calibration time tZQoper 25 - 256 -
tCK
Normal operation short calibration time tZQCS 64 - 64 -
tCK 23
Reset Timing
Exit Reset from CKE HIGH to a valid command tXPR
max(5tCK,
tRFC+ 10ns)
-
max(5tCK,
tRFC+ 10ns)
-
Self Refresh Timing
Exit Self Refresh to commands not requiring a locked
DLL
tXS
max(5tCK,tRF
C+ 10ns)
-
max(5tCK,tRF
C+ 10ns)
-
Exit Self Refresh to commands requiring a locked DLL tXSDLL tDLLK(min)
-
tDLLK(min)
- nCK
Minimum CKE low width for Self refresh entry to exit
timing
tCKESR
tCKE(min) +
1tCK
-
tCKE(min) +
1tCK
-
Valid Clock Requirement after Self Refresh Entry (SRE) tCKSRE
max(5tCK,
10ns)
-
max(5tCK,
10ns)
-
Valid Clock Requirement before Self Refresh Exit (SRX) tCKSRX
max(5tCK,
10ns)
-
max(5tCK,
10ns)
-
Power Down Timing
Exit Power Down with DLL on to any valid command;
Exit Precharge Power Down with DLL
frozen to commands not requiring a locked DLL
tXP
max
(3tCK,7.5ns)
-
max
(3tCK,6ns)
-
Exit Precharge Power Down with DLL frozen to
commands requiring a locked DLL
tXPDLL
max(10tCK,
24ns)
-
max(10tCK,
24ns)
- 2
CKE minimum pulse width tCKE
max(3tCK,
5.625ns)
-
max(3tCK,
5.625ns)
-
Command pass disable delay tCPDED 1 - 1 -
nCK
Power Down Entry to Exit Timing tPD tCKE(min) 9*tREFI tCKE(min) 9*tREFI
tCK 15
Timing of ACT command to Power Down entry tACTPDEN 1 - 1 -
nCK 20
Timing of PRE command to Power Down entry tPRPDEN 1 - 1 -
nCK 20
Timing of RD/RDA command to Power Down entry tRDPDEN RL + 4 +1
-
RL + 4 +1
-
Timing of WR command to Power Down entry
(BL8OTF, BL8MRS, BL4OTF)
tWRPDEN
WL + 4
+(tWR/tCK)
-
WL + 4
+(tWR/tCK)
- nCK 9
Timing of WRA command to Power Down entry
(BL8OTF, BL8MRS, BL4OTF)
tWRAPDEN
WL + 4
+WR+1
-
WL + 4
+WR+1
- nCK 10
Timing of WR command to Power Down entry
(BL4MRS)
tWRPDEN
WL + 2
+(tWR/
tCK(avg))
-
WL + 2
+(tWR/
tCK(avg))
- nCK 9