nt1gt72u4pb0bv Nanya Techology, nt1gt72u4pb0bv Datasheet - Page 20

• Manufacturer Part Number: nt1gt72u4pb0bv
• Description: 240pin Registered Ddr2 Sdram Module Based On 64mx8 & 128mx4 Ddr2 Sdram Die B
• Manufacturer: Nanya Techology

NT2GT72U4NB0BV / NT2GT72U4NB1BV
NT512T72U89B0BV / NT1GT72U4PB0BV
512MB: 64M x 72 / 1GB: 128M X 72 / 2GB: 256M X 72
Registered DDR2 SDRAM DIMM
AC Timing Specifications for DDR2 SDRAM Devices Used on Module
(T
REV 1.3
05/2007
CASE
Symbol
t
t
t
t
AONPD
t
t
t
XARDS
t
AOFPD
t
t
t
t
t
t
AOND
t
t
t
t
XSNR
XSRD
XARD
t
t
ANPD
AXPD
t
t
t
A
t
WTR
t
REFI
REFI
RRD
FAW
CCD
AON
RCD
t
DAL
RTP
t
CKE
AOF
RAS
t
WR
OIT
OFD
XP
RC
RP
= 0 °C ~ 85 ° C; V
Average Periodic Refresh Interval
(85º C < T
Average Periodic Refresh Interval
(0ºC 7 T
Active bank A to Active bank B command
For Activate window
Write recovery time
Auto precharge write recovery + precharge
time
Internal write to read command delay
Internal read to precharge command delay
Exit self refresh to a Non-read command
Exit self refresh to a Read command
Exit precharge power down to any Non- read
command
Exit active power down to read command
Exit active power down to read command
CKE minimum pulse width
OCD drive mode output delay
ODT turn-on delay
ODT turn-on
ODT turn-on (Power down mode)
ODT turn-off delay
ODT turn-off
ODT turn-off (Power down mode)
ODT to power down entry latency
ODT power down exit latency
Row Active Time
RAS to CAS delay
Row Cycle Time
Row Precharge Time
to
CASE
CASE
DDQ
7 85ºC)
7 95º C)
= 1.8V ± 0.1V; V
Parameter
DD
= 1.8V ± 0.1V, See AC Characteristics) (Part 2 of 2)
Speed Grade Definition
t
t
AC(min)
AC(min)
t
t
7-AL
Min.
37.5
AC(min)
AC(min)
+t
+10
WR
t
200
7.5
7.5
7.5
2.5
15
45
15
60
15
RFC
ODT
2
2
2
3
0
2
3
8
RP
20
DDR2-667
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
+2
+2
-3C
t
t
AC(max)
AC(max)
t
t
AC(max)
2.5t
AC(max)
70000
2t
Max.
2.5
12
CK
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CK
+ 0.6
+0.7
+
+1
+1
+
3.9
7.8
12.5 (-25C)
57.5 (-25C)
12.5 (-25C)
15 (-25D)
60 (-25D)
15 (-25D)
t
t
AC(min)
AC(min)
t
t
8-AL
AC(min)
AC(min)
Min.
WR
+t
+10
200
t
7.5
7.5
7.5
2.5
35
15
RFC
45
2
2
2
3
0
2
3
8
RP
DDR2-800
-25D/-25C
+2
+2
t
t
AC(max)
AC(max)
t
t
AC(max)
2.5t
AC(max)
70000
2t
Max.
2.5
12
CK
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CK
+ 0.6
+0.7
+
+1
+1
+
© NANYA TECHNOLOGY CORP.
Unit
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
6s
6s
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes