nt1gt72u89d0by Nanya Techology, nt1gt72u89d0by Datasheet - Page 16

• Manufacturer Part Number: nt1gt72u89d0by
• Description: 240pin Unbuffered Ddr2 Sdram Module With Ecc Based On 128mx8 Ddr2 Sdram D-die
• Manufacturer: Nanya Techology

NT1GT72U89D0BY / NT2GT72U8PD0BY
1GB: 128M x 72 / 2GB: 256M x 72
Unbuffered DDR2 SDRAM DIMM with ECC
AC Timing Specifications for DDR2 SDRAM Devices Used on Module
(T
Speed Grade Definition
REV 1.0
03/2008
CASE
Symbol
t
t
t
Symbol
t
AONPD
t
XARDS
t
AOFPD
t
t
t
tRFC
t
t
XARD
AOND
t
AOFD
t
ANPD
t
AXPD
Delay
t
MRD
MOD
t
REFI
t
AON
AOF
OIT
t
RCD
RAS
t
= 0 °C ~ 85 °C; V
RC
RP
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
MRS command to ODT update delay
OCD drive mode output delay
Minimum time clocks remains ON after CKE
asynchronously drops Low
Refresh to active/Refresh command time
Average Periodic Refresh Interval
(85ºC < T
Average Periodic Refresh Interval
(0ºC ≤ T
Mode register set command cycle time
Row Cycle Time
RAS to CAS delay
Row Precharge Time
Row Active Time
Parameter
CASE
CASE
DDQ
≤ 85ºC)
= 1.8V ± 0.1V; V
≤ 95ºC)
Parameter
Min
45
60
15
15
DD
= 1.8V ± 0.1V, See AC Characteristics) (Part 2 of 2)
-3C
70,000
Max
-
-
-
Min
45
60
15
15
t
-AD
16
IS +
t
t
AC (min)
AC (min)
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
t
t
AC (min)
AC(min)
70,000
7-AL
Min.
t
2.5
Max
CK
2
2
3
8
2
0
0
-
-
-
PC2-5300
+ t
+2
+2
127.5
IH
3.9
7.8
57.5
12.5
12.5
t
Min
t
45
AC(max)
t
t
AC (max)+0.7
AC(max)
AC(max)
2.5t
2t
Max.
2.5
-AC
12
12
CK +
2
-
-
-
-
CK +
70,000
+0.6
Max
+1
+1
-
-
-
t
IS +
t
t
AC (min)
AC (min)
t
t
AC (min)
AC(min)
8-AL
Min.
t
2.5
CK
2
2
3
8
2
0
0
Unit
ns
ns
ns
ns
PC2-6400
+ t
+2
+2
127.5
IH
3.9
7.8
t
t
AC(max)
t
t
AC (max)+0.7
AC(max)
AC(max)
2.5t
© NANYA TECHNOLOGY CORP.
2t
Max.
2.5
12
12
CK +
2
-
-
-
-
CK +
+0.6
+1
+1
nCK
nCK
nCK
nCK
nCK
nCK
nCK
Unit
ns
ns
ns
ns
ns
ns
ns
ns
μs
μs