MT9HVF3272KY-667B1 Micron Technology Inc, MT9HVF3272KY-667B1 Datasheet - Page 24

• Manufacturer Part Number: MT9HVF3272KY-667B1
• Description: MODULE DDR2 256MB 244MDIMM VLP
• Manufacturer: Micron Technology Inc

Specifications of MT9HVF3272KY-667B1

• Memory Type: DDR2 SDRAM
• Memory Size: 256MB
• Speed: 667MT/s
• Package / Case: 244-MDIMM
• Main Category: DRAM Module
• Sub-category: DDR2 SDRAM
• Module Type: 244VLP MiniRDIMM
• Device Core Size: 72b
• Organization: 32Mx72
• Total Density: 256MByte
• Chip Density: 256Mb
• Access Time (max): 450ps
• Maximum Clock Rate: 667MHz
• Operating Supply Voltage (typ): 1.8V
• Operating Current: 1.71A
• Number Of Elements: 9
• Operating Supply Voltage (max): 1.9V
• Operating Supply Voltage (min): 1.7V
• Operating Temp Range: 0C to 55C
• Operating Temperature Classification: Commercial
• Pin Count: 244
• Mounting: Socket
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Extended Mode Register 3 (EMR3)
Figure 11:
PDF: 09005aef81c9620b/Source: 09005aef81c961ec
HVF9C32_64_128x72K_2.fm - Rev. B 11/05 EN
Extended Mode Register 3 (EMR3) Definition
The extended mode register 3 (EMR3) controls functions beyond those controlled by the
mode register. Currently all bits in EMR3 are reserved as shown in Figure 11. The EMR3
is programmed via the LOAD MODE command and will retain the stored information
until it is programmed again or the device loses power. Reprogramming the extended
mode register will not alter the contents of the memory array, provided it is performed
correctly.
The extended mode register must be loaded when all banks are idle and no bursts are in
progress, and the controller must wait the specified time
subsequent operation. Violating either of these requirements could result in unspecified
operation.
256MB Address Bus
512MB Address Bus
1GB Address Bus
0*
BA2
16
* E12 (A12)–E0 (A0) are reserved for future use and must all be programmed to '0.'
* E13 (A13)–E0 (A0) are reserved for future use and must all be programmed to '0.'
M15
256MB, 512MB, 1GB: (x72, SR) 244-Pin DDR2 VLP Reg. MiniDIMM
BA1
15
EMR3
BA1
15
0
0
1
1
MRS
EMR(3) 0* 0*
14
BA1
BA0
M14
14
14
BA0
0
1
0
1
0*
13
13
0*
BA0
13
A13
Extended Mode Register (EMRS2)
Extended Mode Register (EMRS3)
A13
Extended Mode Register (EMRS)
0* 0*
12
12
0* 0*
12
A12 A11
A12 A11
Mode Register Set (MRS)
A12 A11
Mode Register Set
11
11
11
0*
0*
0*
10
10
10
A10
A10
A10
0* 0* 0* 0* 0* 0* 0* 0*
0* 0* 0* 0* 0* 0* 0* 0*
0* 0* 0* 0* 0* 0* 0* 0*
9
9
A9
A9
9
A9
8
8
A8
A8
8
A8
7
7
7
A7 A6 A5 A4 A3
A7 A6 A5 A4 A3
A7 A6 A5 A4 A3
24
6
6
6
* E16 (BA2) and E13 (A13) - E0 (A0) are
reserved for future use and must all
be programmed to '0.'
5
5
5
4
4
4
3
3
Micron Technology, Inc., reserves the right to change products or specifications without notice.
3
2
2
2
A2 A1 A0
A2 A1 A0
A2 A1 A0
Extended Mode Register 3 (EMR3)
0* 0*
0* 0*
0* 0*
1
1
1
0
0
0
Extended Mode
Register (Ex)
Extended Mode
Register (Ex)
Address Bus
Address Bus
Extended Mode
Register (Ex)
Address Bus
t
MRD before initiating any
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