nt1gt72u89d0bd-ac Nanya Techology, nt1gt72u89d0bd-ac Datasheet - Page 25

• Manufacturer Part Number: nt1gt72u89d0bd-ac
• Description: 240pin Ddr2 Sdram Fully Buffered Dimm Based On 128mx8 1gb/2gb/4gb , 256mx4 4gb , And 512mx4 8gb Ddr2 Sdram
• Manufacturer: Nanya Techology

NT1GT72U89D0BD-AC / NT2GT72U8PD0BD-AC / NT4GT72U4ND0BD-AC / NT4GT72U8ND9BD-AC
NT1GT72U89D1BD-3C / NT2GT72U8PD1BD-3C / NT4GT72U4ND1BD-3C / NT8GTT72U4ND3YD-3C
NT1GT72U89D1BN-3C / NT2GT72U8PD1BN-3C / NT4GT72U4ND1BN-3C / NT8GTT72U4ND4YD-3C
NT1GT72U89D2BD-3C / NT2GT72U8PD2BD-3C / NT4GT72U4ND2BD-3C / NT8GTT72U4ND5YD-3C
NT1GT72U89D6BD-AC / NT2GT72U8PD6BD-AC / NT4GT72U8ND9BD-3C
AC Timing Specifications for DDR2 SDRAM Devices Used on Module
(T
REV 1.3
03/2009
CASE
= 0 °C ~ 85 ° C; V
Symbol
t
t
t
t
AONPD
t
t
t
XARDS
t
AOFPD
t
t
t
t
AOND
t
AOFD
t
ANPD
t
t
t
XSNR
XSRD
XARD
t
AXPD
t
t
WR
t
WTR
AON
CCD
RTP
t
CKE
AOF
RAS
RCD
t
t
DAL
WR
OIT
RC
XP
RP
DDQ
= 1.8V
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
0.1V; V
DD
Parameter
= 1.8V
0.1V, See AC Characteristics) (Part 2 of 2)
Speed Grade Definition
ODT
25
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
t
t
t
t
WR
7-AL
Min.
AC(min)
AC(min)
AC(min)
(min)
WR
+t
+10
200
t
7.5
7.5
2.5
t
15
RFC
+2
+2
45
15
60
15
2
2
2
3
0
2
AC
3
8
/t
RP
CK
-3C
t
t
t
70000
2t
2.5t
Max.
(max)
AC(max)
AC(max)
AC(max)
+0.6
2.5
t
+1
+1
12
+1
CK
2
AC
+
-
-
-
-
-
-
-
-
-
CK
+
t
t
t
t
t
WR
8-AL
Min.
AC(min)
AC(min)
AC(min)
AC(min)
12.5
57.5
12.5
+t
WR
t
+10
200
7.5
7.5
2.5
15
+2
+2
45
RFC
2
2
2
3
0
2
3
8
/t
RP
CK
-AC
t
t
t
t
70000
2.5t
2t
Max.
AC(max)
AC(max)
AC(max)
AC(max)
+0.6
+0.7
2.5
12
+1
+1
CK
2
+
-
-
-
-
-
-
-
-
-
CK
+
Unit Notes
t
ns
ns
t
ns
ns
ns
t
t
t
t
t
ns
t
ns
ns
t
ns
ns
t
t
ns
ns
ns
ns
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
© NANYA TECHNOLOGY CORP.