nt1gt64u8hb0by Nanya Techology, nt1gt64u8hb0by Datasheet - Page 20

• Manufacturer Part Number: nt1gt64u8hb0by
• Description: 256mb 32m X 64 / 512mb 64m X 64 / 1gb 128m X 64 Unbuffered Ddr2 Sdram Dimm
  
  
  
• Manufacturer: Nanya Techology

NT256T64UH4B0FY / NT512T64U88B0BY / NT1GT64U8HB0BY
256MB: 32M x 64 / 512MB: 64M x 64 / 1GB: 128M x 64
Unbuffered DDR2 SDRAM DIMM
AC Timing Specifications for DDR2 SDRAM Devices Used on Module
(T
Speed Grade Definition
REV 1.2
03/2007
CASE
Symbol
t
t
t
Symbol
t
AONPD
t
t
t
t
XARDS
AOFPD
t
t
t
AOND
t
t
XSNR
XSRD
XARD
t
AOFD
t
ANPD
AXPD
t
t
WR
WTR
t
AON
t
DAL
RTP
t
CKE
AOF
WR
t
RCD
RAS
t
XP
= 0 °C ~ 85 ° C; V
RC
RP
Write recovery time without Auto-Precharge
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
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 Cycle Time
RAS to CAS delay
Row Precharge Time
Row Active Time
Parameter
DDQ
= 1.8V ± 0.1V; V
Parameter
DD
Min
45
60
15
15
= 1.8V ± 0.1V, See AC Characteristics) (Part 2 of 2)
-37B
70,000
Max
-
-
-
Min
ODT
WR+t
t
45
60
15
15
t
t
20
t
t
RFC
(min)
AC (min)
AC (min)
WR
AC(min)
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
6-AL
Min.
200
7.5
7.5
2.5
t
15
+2
AC
2
2
3
2
3
8
/t
PC2-4200
+10
+2
-3C
CK
RP
70,000
t
Max
t
t
2.5t
t
AC (max)
AC(max)
AC(max)
AC(max)
2t
Max.
-
-
-
+0.6
2.5
+1
+1
CK +
+1
2
-
-
-
-
-
-
-
-
CK +
WR+t
t
t
t
t
t
RFC
AC (min)
AC (min)
(min)
WR
AC(min)
Min
7-AL
Min.
45
60
15
15
200
t
7.5
7.5
2.5
15
+2
AC
2
2
3
2
3
8
PC2-5300
/t
+10
+2
CK
RP
-25D
t
2.5t
t
t
t
AC (max)
70,000
AC(max)
AC(max)
AC(max)
2t
Max.
+0.6
Max
+0.7
2.5
+1
+1
CK +
2
-
-
-
-
-
-
-
-
-
CK +
WR+t
t
t
t
t
t
RFC
(min)
AC (min)
AC (min)
WR
AC(min)
8-AL
Min.
57.5
12.5
12.5
200
Min
7.5
7.5
2.5
t
+2
15
45
AC
2
2
3
2
3
8
PC2-6400
/t
© NANYA TECHNOLOGY CORP.
+10
+2
CK
RP
-25C
t
t
t
2.5t
t
AC (max)
70,000
AC(max)
AC(max)
AC(max)
2t
Max.
+0.6
Max
+0.7
2.5
+1
+1
CK +
2
-
-
-
-
-
-
-
-
CK +
Unit
Unit
t
t
t
t
t
t
t
t
t
t
t
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK