SEP02G72D1BH2MT-25R Datasheet, PDF (10/14 Pages) List of Unclassifed Manufacturers – 2GB DDR2 – SDRAM registered DIMM

Data Sheet
Rev.1.2 25.11.2010
DDR2 SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND RECOMMENDED
AC OPERATING CONDITIONS (Continued)
(0°C ≤ TCASE ≤ + 85°C; VDDQ = +1.8V ± 0.1V, VDD = +1.8V ± 0.1V)
AC CHARACTERISTICS
PARAMETER
Address and control input hold
time
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 Activate period
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
PRECHARGE ALL command
period
LOAD MODE command cycle
time
CKE low to CK, CK# uncertainty
REFRESH to ACTIVE or
REFRESH to REFRESH
command interval
Average periodic refresh
interval
(0°C<= T_CASE <= 85 °C)
(85°C<= T_CASE <= 95 °C)
Exit SELF REFRESH to non-
READ command
Exit SELF REFRESH to READ
command
Exit SELF REFRESH timing
reference
ODT turn-on delay
ODT turn-on
SYMBOL
t_IH
t_CCD
t_RC
t_RRD
t_RCD
t_FAW
t_RAS
t_RTP
t_WR
t_DAL
t_WTR
t_RP
t_RPA
t_MRD
t_DELAY
t_RFC
t_REFI
t_{REFI (IT)}
t_XSNR
t_XSRD
t_ISXR
t_AOND
t_AON
ODT turn-off delay
ODT turn-off
t_AOFD
t_AOF
ODT turn-on (power-down mode) t_AONPD
ODT turn-off (power-down mode) t_AOFPD
ODT to power-down entry latency t_ANPD
6400-666
MIN
MAX
0.25
2
60
7.5
15
37.5
45
70,000
7.5
15
tWR + tRP
7.5
15
tRP + tCK
2
tIS + tCK + tIH
105 70’000
7.8
3.9
tRFC(min)
+ 10
200
tIS
2
tAC(min)
2.5
tAC(min)
tAC(min) +
2,000
tAC(min) +
2,000
3
2
tAC(max)
+ 1,000
2.5
tAC(max)
+ 600
2 x tCK +
tAC(max)
+ 1,000
2.5 x tCK +
tAC(max)
+ 1,000
5300-555
MIN
MAX
0.275
2
60
7.5
15
37.5
45
70,000
7.5
15
tWR + tRP
7.5
15
tRP + tCK
2
tIS + tCK + tIH
105 70’000
7.8
3.9
tRFC(min)
+ 10
200
tIS
2
tAC(min)
2.5
tAC(min)
tAC(min) +
2,000
tAC(min) +
2,000
3
2
tAC(max)
+ 1,000
2.5
tAC(max)
+ 600
2 x tCK +
tAC(max)
+ 1,000
2.5 x tCK +
tAC(max)
+ 1,000
Unit
ns
tCK
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tCK
tCK
ns
µs
ns
tCK
ps
tCK
ps
tCK
ps
ps
ps
tCK
Swissbit AG
Industriestrasse 4
CH-9552 Bronschhofen
Fon: [phone]
Fax: [phone]
www.swissbit.com
eMail: [e-mail]
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