nt1gt72u4pb0bv Nanya Techology, nt1gt72u4pb0bv Datasheet - Page 19

• 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
t
t
t
t
t
t
IH
Symbol
t
t
DH (base)
t
IS
t
DS (base)
DQSL,(H)
CH (avg)
CL (avg)
CK (avg)
t
LZ(DQS)
t
CASE
DQSCK
t
t
t
t
LZ(DQ)
t
t
t
DQSQ
t
WPST
WPRE
t
DQSS
t
t
RPRE
t
t
DIPW
RPST
Delay
t
t
QHS
t
MRD
(base) Address and control input hold time
(base) Address and control input setup time
IPW
t
DSS
DSH
RFC
QH
AC
HP
HZ
= 0 °C ~ 85 ° C; V
Average CK low-level width
DQ output access time from CK/
DQS output access time from CK/
Average CK high-level width
Minimum half clk period for any given cycle;
defined by clk high (t
Clock Cycle Time
DQ and DM input hold time
DQ and DM input setup time
Input pulse width
DQ and DM input pulse width (each input)
Data-out high-impedance time from CK/
Data-out low-impedance time from CK/
DQS low-impedance time from CK/
DQS-DQ skew (DQS & associated DQ
signals)
Data hold Skew Factor
Data output hold time from DQS
Write command to 1st DQS latching transition
DQS input low (high) pulse width
(write cycle)
DQS falling edge to CK setup time
(write cycle)
DQS falling edge hold time from CK
(write cycle)
Mode register set command cycle time
Write postamble
Write preamble
Read preamble
Read postamble
Minimum time clocks remains ON after CKE
asynchronously drops Low
Refresh to active/Refresh command time
DDQ
= 1.8V ± 0.1V; V
Parameter
CH
)
or clk low (t
DD
= 1.8V ± 0.1V, See AC Characteristics) (Part 1 of 2)
CL
) time
Min(t
t
IS
t
t
CL
2t
HP
+
-0.45
t
-0.25
0.48
0.48
0.60
0.35
0.35
0.20
0.20
0.40
0.35
Min.
-0.4
175
AC min
(abs))
100
275
200
CH
0.9
0.4
t
AC min
3
CK
-t
2
-
-
-
19
(abs),
QHS
DDR2-667
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
+ t
IH
-3C
+0.45
t
t
t
Max.
+0.4
0.52
0.52
AC max
AC max
AC max
0.24
0.34
0.25
0.60
1.1
0.6
8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
105
t
IS
t
t
Min(t
CL
2t
+
HP
(abs),
-0.35
t
-0.25
Min.
0.48
0.48
0.60
0.35
0.35
0.20
0.20
0.40
0.35
-0.4
125
AC min
250
175
(abs))
2.5
0.9
0.4
t
AC min
50
CK
-t
2
-
-
-
QHS
DDR2-800
CH
-25D/25C
+ t
IH
+0.35
t
t
t
Max
+0.4
0.52
0.52
AC max
AC max
AC max
0.20
0.30
0.25
0.60
1.1
0.6
8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
© NANYA TECHNOLOGY CORP.
t
t
t
t
t
t
t
t
t
t
t
t
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
nCK
Unit
ns
ns
(avg)
(avg)
ns
ns
ps
ps
(avg)
(avg)
ns
ns
ns
ns
ns
ns
(avg)
(avg)
(avg)
(avg)
(avg)
(avg)
ps
ps
(avg)
(avg)
ns
ns
Notes