MT46H8M32LFB5-75:A TR Micron Technology Inc, MT46H8M32LFB5-75:A TR Datasheet - Page 5

• Manufacturer Part Number: MT46H8M32LFB5-75:A TR
• Description: IC DDR SDRAM 256MBIT 90VFBGA
• Manufacturer: Micron Technology Inc

Specifications of MT46H8M32LFB5-75:A TR

• Format - Memory: RAM
• Memory Type: Mobile DDR SDRAM
• Memory Size: 256M (8Mx32)
• Speed: 133MHz
• Interface: Parallel
• Voltage - Supply: 1.7 V ~ 1.95 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 90-VFBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 1:
FBGA Part Marking Decoder
General Description
PDF: 09005aef82091978 / Source: 09005aef8209195b
MT46H16M16LF__2.fm - Rev. H 6/08 EN
256Mb Mobile DDR Part Numbering
Micron DDR MT46
Example Part Number: MT 46 H 16 M 1 6 L F XX-75 IT :A
Due to space limitations, FBGA-packaged components have an abbreviated part
marking that is different from the part number. For a quick conversion of an FBGA code,
see the FBGA part marking decoder at
The 256Mb Mobile DDR SDRAM is a high-speed CMOS, dynamic random-access
memory containing 268,435,456 bits. It is internally configured as a quad-bank DRAM.
On the x16 device, each of the 67,108,864-bit banks is organized as 8,192 rows by 512
columns by 16 bits. On the x32 device, each of the 67,108,864-bit banks is organized as
4,096 rows by 512 columns by 32 bits.
The 256Mb Mobile DDR SDRAM uses a double data rate architecture to achieve high-
speed operation. The double data rate architecture is essentially a 2n-prefetch architec-
ture with an interface designed to transfer two data words per clock cycle at the I/O
balls
consists of a single 2n-bit-wide, one-clock-cycle data transfer at the internal DRAM core
and two corresponding n-bit-wide, one-half-clock-cycle data transfers at the I/O balls
A bidirectional data strobe (DQS) is transmitted externally, along with data, for use in
data capture at the receiver. DQS is a strobe transmitted by the Mobile DDR SDRAM
during READs and by the memory controller during WRITEs. DQS is edge-aligned with
data for READs and center-aligned with data for WRITEs. The x16 offering has two data
strobes: one for the lower byte and one for the upper byte. The x32 offering has four data
strobes, one per byte.
V
1.8V/1.8V
DD
/V
V
.
DD
V
DD
A single read or write access for the 256Mb Mobile DDR SDRAM effectively
DD
Q
Q
/
H
Configuration
16 Meg x 16
8 Meg x 32
Mobile Configuration
Package
60-Ball VFBGA (lead-free) BF
90-Ball VFBGA (lead-free) B5
16M16LF
8M32LF
5
Package
www.micron.com/decoder.
Micron Technology, Inc., reserves the right to change products or specifications without notice.
256Mb: x16, x32 Mobile DDR SDRAM
–
-75
-10
-6
Speed
Speed Grade
t CK = 6.0ns
t CK = 7.5ns
t CK = 9.6ns
FBGA Part Marking Decoder
IT
Temp
Operating Temp
Commercial
Industrial
:A
Revision
©2005 Micron Technology, Inc. All rights reserved.
Revision
First Generation
.