nt1gt72u4pa0bv Nanya Techology, nt1gt72u4pa0bv Datasheet - Page 19

• Manufacturer Part Number: nt1gt72u4pa0bv
• Description: 240pin Registered Ddr2 Sdram Module Based On 64mx8 & 128mx4 Ddr2 Sdram Die A
• Manufacturer: Nanya Techology

NT512T72U89A0BV / NT1GT72U4PA0BV / NT2GT72U4NA2BV
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 1.2
09/2006
CASE
= 0 °C ~ 85 ° C; V
Symbol
t
t
t
t
t
t
t
XARDS
AONPD
AOFPD
t
t
t
t
t
t
t
t
XSNR
XSRD
XARD
t
AOND
t
t
ANPD
t
t
t
t
A
AXPD
t
WR
REFI
RRD
FAW
CCD
WTR
t
AON
RCD
RTP
t
CKE
AOF
RAS
t
t
DAL
WR
OIT
OFD
RC
RP
XP
DDQ
= 1.8V ± 0.1V; V
Average Periodic Refresh Interval
(85ºC < T
Average Periodic Refresh Interval
(0ºC 7 T
Active bank A to Active bank B command
For Activate window
Write recovery time
Write recovery time with Auto-Precharge
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
DD
7 85º C)
7 95ºC)
= 1.8V ± 0.1V, See AC Characteristics) (Part 2 of 2)
Parameter
Speed Grade Definition
ODT
19
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
t
t
AC(min)
AC(min)
t
t
t
WR
7-AL
37.5
AC(min)
AC(min)
Min.
WR
+t
+10
200
t
7.5
7.5
7.5
2.5
15
45
15
60
15
RFC
2
2
2
3
0
2
3
8
/t
RP
CK
+2
+2
-3C
3.9
7.8
t
t
AC(max)
t
AC(max)
2.5t
t
AC(max)
70000
2t
Max.
AC(max)
+0.7
2.5
0.6
12
CK
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CK
+
+1
+1
+
+
Unit
t
t
t
t
t
t
t
t
t
t
t
6s
6s
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
© NANYA TECHNOLOGY CORP.
Notes