MT9VDDF3272G-26AC1 Micron Technology Inc, MT9VDDF3272G-26AC1 Datasheet - Page 12
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MT9VDDF3272G-26AC1
Manufacturer Part Number
MT9VDDF3272G-26AC1
Description
MODULE SDRAM DDR 256MB 184DIMM
Manufacturer
Micron Technology Inc
Datasheet
1.MT9VDDF6472Y-335F1.pdf
(34 pages)
Specifications of MT9VDDF3272G-26AC1
Memory Type
DDR SDRAM
Memory Size
256MB
Speed
266MT/s
Package / Case
184-DIMM
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
and will retain the stored information until it is pro-
grammed again or the device loses power.
enabling of the DLL should always be followed by a
LOAD MODE REGISTER command to the mode regis-
ter (BA0/BA1 both LOW) to reset the DLL.
all device banks are idle and no bursts are in progress,
and the controller must wait the specified time before
initiating any subsequent operation. Violating either
of these requirements could result in unspecified oper-
ation.
DLL Enable/Disable
DLL enable is required during power-up initialization
and upon returning to normal operation after having
disabled the DLL for the purpose of debug or evalua-
tion. When the device exits self refresh mode, the DLL
is enabled automatically. Any time the DLL is enabled,
200 clock cycles with CKE HIGH must occur before a
READ command can be issued.
pdf: 09005aef80e119b2, source: 09005aef807d56a1
DDF9C32_64x72G.fm - Rev. B 9/04 EN
The extended mode register must be loaded when
The DLL must be enabled for normal operation.
The
12
NOTE:
E12
1. BA1 and BA0 (E14 and E13) must be “0, 1” to select the
2. QFC# is not supported.
0
–
E11
Extended Mode Register (vs. the base Mode Register).
Figure 8: Extended Mode Register
0 1
14
BA1 BA0
0
–
256MB, 512MB (x72, ECC, SR)
Micron Technology, Inc., reserves the right to change products or specifications without notice.
1 1
E10
184-PIN DDR SDRAM RDIMM
13
0
–
12
E9
A12
0
–
11
E8
0
A11
–
Definition Diagram
E7
10
0
–
A10
E6 E5
0
–
9
Operating Mode
A9
0
–
8
A8
E4
0
–
7
A7 A6 A5 A4 A3
E3
0
–
6
E2 2
0
–
5
©2004 Micron Technology, Inc. All rights reserved.
4
E1,
Valid
–
3
E0
2
A2 A1 A0
DS
Operating Mode
Reserved
Reserved
1
E1
0
DLL
0
E0
0
1
Drive Strength
Extended Mode
Register (Ex)
Address Bus
Normal
Disable
Enable
DLL