MT47H32M16BT-3:A TR Micron Technology Inc, MT47H32M16BT-3:A TR Datasheet - Page 76
![IC DDR2 SDRAM 512MBIT 3NS 92FBGA](/photos/7/26/72643/557-92-fbga_sml.jpg)
MT47H32M16BT-3:A TR
Manufacturer Part Number
MT47H32M16BT-3:A TR
Description
IC DDR2 SDRAM 512MBIT 3NS 92FBGA
Manufacturer
Micron Technology Inc
Datasheet
1.MT47H128M4BT-37EA_TR.pdf
(129 pages)
Specifications of MT47H32M16BT-3:A TR
Format - Memory
RAM
Memory Type
DDR2 SDRAM
Memory Size
512M (32Mx16)
Speed
3ns
Interface
Parallel
Voltage - Supply
1.7 V ~ 1.9 V
Operating Temperature
0°C ~ 85°C
Package / Case
92-FBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
557-1048-1
MT47H32M16BT-3:A
MT47H32M16BT-3:A
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Extended Mode Register (EMR)
Figure 36: EMR Definition
PDF: 09005aef82f1e6e2
512MbDDR2.pdf - Rev. O 7/09 EN
Notes:
The extended mode register controls functions beyond those controlled by the mode
register; these additional functions are DLL enable/disable, output drive strength, on-
die termination (ODT), posted AL, off-chip driver impedance calibration (OCD), DQS#
enable/disable, RDQS/RDQS# enable/disable, and output disable/enable. These func-
tions are controlled via the bits shown in Figure 36. The EMR is programmed via the LM
command and will retain the stored information until it is programmed again or the
device loses power. Reprogramming the EMR will not alter the contents of the memory
array, provided it is performed correctly.
The EMR must be loaded when all banks are idle and no bursts are in progress, and the
controller must wait the specified time
tion. Violating either of these requirements could result in an unspecified operation.
BA2
E15
16
0
0
0
1
1
1. E16 (BA2) is only applicable for densities ≥1Gb, reserved for future use, and must be pro-
2. Mode bits (En) with corresponding address balls (An) greater than E12 (A12) are re-
3. Not all listed AL options are supported in any individual speed grade.
4. As detailed in the Initialization (page 82) section notes, during initialization of the
1
E14
BA1
15
MRS
0
1
0
1
E12
grammed to “0.”
served for future use and must be programmed to “0.”
OCD operation, all three bits must be set to “1” for the OCD default state, then set to
“0” before initialization is finished.
0
1
14
BA0
E9
0
0
0
1
1
Extended mode register (EMR2)
Extended mode register (EMR3)
E11
Extended mode register (EMR)
0
1
Disabled
Outputs
Enabled
0
E8
n
An
RDQS Enable
0
0
1
0
1
E10
0
1
Mode register (MR)
Out
Mode Register Set
2
E7
12
0
1
0
0
1
A12
Yes
No
DQS# Enable
RDQS
Disable
Enable
OCD Operation
OCD exit
Reserved
Reserved
Reserved
Enable OCD defaults
11
DQS#
10
A10
OCD Program
9
A9
E6
0
0
1
1
4
8
A8
E2
0
1
0
1
7
A7 A6 A5 A4 A3
R
R
TT
R
TT
TT
6
(Nominal)
150Ω
disabled
75Ω
50Ω
Posted CAS# R
5
76
E5
0
0
0
0
1
1
1
1
4
E4
0
0
1
1
0
0
1
1
3
E3
0
1
0
1
0
1
0
1
TT
2
A2 A1 A0
Posted CAS# Additive Latency (AL)
ODS
E1
0
1
Micron Technology, Inc. reserves the right to change products or specifications without notice.
t
1
MRD before initiating any subsequent opera-
DLL
E0
0
1
Output Drive Strength
0
512Mb: x4, x8, x16 DDR2 SDRAM
Disable (test/debug)
Reserved
Enable (normal)
Extended Mode Register (EMR)
Address bus
Extended mode
register (Ex)
Reduced
DLL Enable
Full
0
1
2
3
4
5
6
3
©2004 Micron Technology, Inc. All rights reserved.
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