MT48H4M16LFB4-75 Micron Technology Inc, MT48H4M16LFB4-75 Datasheet - Page 5

• Manufacturer Part Number: MT48H4M16LFB4-75
• Manufacturer: Micron Technology Inc
• Type: SDRAMr

Specifications of MT48H4M16LFB4-75

• Organization: 4Mx16
• Density: 64Mb
• Address Bus: 14b
• Maximum Clock Rate: 133MHz
• Operating Supply Voltage (typ): 1.8V
• Package Type: VFBGA
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 1.9V
• Operating Supply Voltage (min): 1.7V
• Supply Current: 50mA
• Pin Count: 54
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Compliant

Figure 2:
General Description
PDF: 09005aef8237ed98, Source: 09005aef8237ed68
64mb_x16_Mobile SDRAM_Y24L_2.fm - Rev. B 10/06 EN
Part Numbering Diagram
The Micron
containing 67,108,864-bits. It is internally configured as a quad-bank DRAM with a
synchronous interface (all signals are registered on the positive edge of the clock signal,
CLK). Each of the x16’s 16,777,216-bit banks is organized as 4,096 rows by 256 columns
by 16 bits.
Read and write accesses to the SDRAM are burst oriented; accesses start at a selected
location and continue for a programmed number of locations in a programmed
sequence. Accesses begin with the registration of an ACTIVE command, which is then
followed by a READ or WRITE command. The address bits registered coincident with the
ACTIVE command are used to select the bank and row to be accessed (BA0, BA1 select
the bank; A0–A11 select the row). The address bits registered coincident with the READ
or WRITE command are used to select the starting column location for the burst access.
The SDRAM provides for programmable read or write burst lengths of 1, 2, 4, or 8 loca-
tions with a burst terminate option. An AUTO PRECHARGE function may be enabled to
provide a self-timed row precharge that is initiated at the end of the burst sequence.
The 64Mb SDRAM uses an internal pipelined architecture to achieve high-speed opera-
tion. This architecture is compatible with the 2n rule of prefetch architectures, but it also
allows the column address to be changed on every clock cycle to achieve a high-speed,
fully random access. Precharging one bank while accessing one of the other three banks
will hide the PRECHARGE cycles and provide seamless high-speed, random-access
operation.
54-ball VFBGA (8mm x 8mm) Lead-Free
V
1.7V - 1.95V
DD
/V
MT48
DD
Q
®
Example Part Number: MT48H4M16LF-8 IT
64Mb SDRAM is a high-speed CMOS, dynamic random-access memory
Configuration
4 Meg x16
V
Package
V
DD
DD
Q
/
H
Configuration
4M16LF
5
Package
B4
Micron Technology, Inc., reserves the right to change products or specifications without notice.
64Mb: 4 Meg x 16 Mobile SDRAM
–
Speed
-75
-8
None
IT
Speed Grade
7.5ns
8ns
Operating Temp
Commercial
Temp
Industrial
©2006 Micron Technology, Inc. All rights reserved.