NT256D72S89AKGU Nanya Technology, NT256D72S89AKGU Datasheet - Page 5

• Manufacturer Part Number: NT256D72S89AKGU
• Description: 256MB DDR SDRAM DIMM
• Manufacturer: Nanya Technology

NT256D72S89AKGU
256MB : 32M x 72
Low Profile Registered DDR SDRAM DIMM
Serial Presence Detect --
32Mx72 1 BANK REGISTERED DDR SDRAM DIMM based on 32Mx8, 4Banks, 8K Refresh, 2.5V DDR SDRAMs with SPD
REV 1.1
12/2002
36-61
Byte
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
62
63
6.
0
1
2
3
4
5
7
8
9
Number of Serial PD Bytes Written during
Production
Total Number of Bytes in Serial PD device
Fundamental Memory Type
Number of Row Addresses on Assembly
Number of Column Addresses on Assembly
Number of DIMM Bank
Data Width of Assembly (cont’)
Voltage Interface Level of this Assembly
DDR SDRAM Device Cycle Time at CL=2.5
DDR SDRAM Device Access Time from
Clock at CL=2.5
DIMM Configuration Type
Refresh Rate/Type
Primary DDR SDRAM Width
Error Checking DDR SDRAM Device Width
DDR SDRAM Device Attr: Min CLk Delay,
Random Col Access
DDR SDRAM Device Attributes:
Burst Length Supported
DDR SDRAM Device Attributes: Number of
Device Banks
DDR SDRAM Device Attributes: CAS
Latencies Supported
DDR SDRAM Device Attributes: CS Latency
DDR SDRAM Device Attributes: WE Latency
DDR SDRAM Device Attributes:
DDR SDRAM Device Attributes: General
Maximum Data Access Time from Clock at
CL=2
Maximum Data Access Time from Clock at
CL=1
Minimum Row Precharge Time (t
Minimum Row Active to Row Active delay
(t
Minimum RAS to CAS delay (t
Module Bank Density
Address and Command Setup Time Before
Clock
Address and Command Hold Time After
Clock
Data Input Setup Time Before Clock
Data Input Hold Time After Clock
Checksum Data
Data Width of Assembly
Minimum Clock Cycle at CL=2
Minimum Clock Cycle Time at CL=1
Minimum RAS Pulse Width (t
Reserved
SPD Revision
RRD
)
Description
RAS
Part 1 of 2
RCD
RP
)
)
)
Differential Clock, PLL, REGISTER
DDR266A
0.75ns
0.75ns
7.5ns
0.9ns
0.9ns
0.5ns
0.5ns
Initial
2/2.5
20ns
15ns
20ns
45ns
-7K
7ns
+/-0.2V Voltage Tolerance
SPD Entry Value
SDRAM DDR
5
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
SSTL 2.5V
7.8us / SR
DDR266B
Undefined
1 Clock
512MB
0.75ns
0.75ns
2, 4, 8
7.5ns
0.9ns
0.9ns
0.5ns
0.5ns
Initial
2/2.5
-75B
ECC
10ns
20ns
15ns
20ns
45ns
X72
X72
128
256
N/A
N/A
X8
X8
13
11
1
4
0
1
DDR200
0.8ns
0.8ns
1.1ns
1.1ns
0.6ns
0.6ns
Initial
2/2.5
10ns
30ns
15ns
30ns
50ns
-8B
8ns
Serial PD Data Entry (Hexadecimal) Note
DDR266A
-7K
0C
3C
2D
70
75
75
75
50
50
90
90
50
50
00
A7
DDR266B
-75B
0D
0A
0E
0C
A0
3C
2D
D7
80
08
07
01
48
00
04
75
75
02
82
08
08
01
04
01
02
26
00
75
00
00
50
50
40
90
90
50
50
00
00
© NANYA TECHNOLOGY CORP.
DDR200
-8B
AD
0C
A0
3C
B0
B0
80
80
80
78
78
32
60
60
00