nt1gt72u8pb1bd-2c Nanya Techology, nt1gt72u8pb1bd-2c Datasheet - Page 13

• Manufacturer Part Number: nt1gt72u8pb1bd-2c
• Description: 240pin Ddr2 Sdram Fully Buffered Dimm Based On 64mx8 & 128mx4 Ddr2 Sdram - B Die
• Manufacturer: Nanya Techology

NT512T72U89B1BD-2C / NT1GT72U8PB1BD-2C / NT2GT72U4NB1BD-2C
512MB: 64Mx72 / 1GB: 128Mx72 / 2GB: 256Mx72
AC Timing Specifications for DDR2 SDRAM Devices Used on Module
(T
REV 1.0
09/2007
CASE
= 0 °C ~ 85 ° C; V
DDQ
Symbol
t
t
t
t
t
t
t
AONPD
t
AOFPD
t
XARDS
t
t
t
AOND
t
t
t
t
XSNR
XSRD
XARD
AOFD
t
ANPD
AXPD
t
t
Delay
WR
MRD
MOD
t
REFI
t
AON
AOF
RFC
RAS
RCD
t
t
OIT
RC
XP
RP
= 1.8V ± 0.1V; V
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
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
Mode register set command cycle time
MRS command to ODT update delay
OCD drive mode output delay
Minimum time clocks remains ON after CKE
asynchronously drops Low
Write recovery time with Auto-Precharge
Refresh to active/Refresh command time
Average Periodic Refresh Interval
(85ºC < T
Average Periodic Refresh Interval
(0º C < T
ACT to PRE delay
ACT to RD(A) or WT(A) delay
PRE to ACT delay
ACT to ACT delay
CASE
DD
CASE
= 1.8V ± 0.1V, See AC Characteristics) (Part 2 of 2)
< 85º C)
< 95ºC)
Parameter
Speed Grade Definition
Refresh parameters
13
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
t
t
t
t
t
WR
Min.
8-AL
AC(min)
AC(min)
AC(min)
AC(min)
t
12.5
12.5
57.5
+10
200
t
t
2.5
CK
RFC
+2
+2
IS
45
t
2
2
2
3
8
2
0
0
IH
/t
+
+
CK
-2C
105
3.9
7.8
t
t
t
t
70000
2.5t
2t
Max.
AC(max)
AC(max)
AC(max)
AC(max)
+0.6
+0.7
2.5
+1
+1
12
12
CK
2
+
-
-
-
-
-
-
-
-
-
-
-
CK
+
Unit Notes
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
=s
=s
ns
ns
ns
ns
© NANYA TECHNOLOGY CORP.