4GB (x72, DR) 240-Pin DDR2 SDRAM 1.55V FBDIMM
Features
1.55V DDR2 FBDIMM
MT36RTF51272FZ – 4GB
Figure 1: 240-Pin FBDIMM (MO-256 R/C E)
Features
240-pin, fully buffered DIMM (FBDIMM)
Very low power DDR2 operation
•
•
Module height: 30.35mm (1.19in)
• 1.5V ≤ VDD ≤ 1.9V for DDR2 SDRAM
• 1.5V ≤ VDD ≤ 1.9V for advanced memory buffer
(AMB) DRAM I/O
VDD = 1.55V
•
•
Backward compatible with systems designed for the
standard (1.8V) FBDIMM
Options
Marking
Package
•
Dual rank
240-pin DIMM (halogen-free)
Z
•
•
–
Frequency/CL1
•
Component configuration: 256 Meg x 4
3.0ns @ CL = 5 (DDR2-667)
-667
–
Functionality
1. CL = CAS (READ) latency.
Note:
This 1.55V FBDIMM consumes less power than a stand-
ard 1.8V FBDIMM. However, it has the same timing
and operating parameters as a standard FBDIMM.
This enables backward compatibility with systems de-
signed for use with standard FBDIMMs.
Information in the 1.8V DDR2 FBDIMM data sheet is
directly applicable to this 1.55V DDR2 FBDIMM, ex-
cept where stated otherwise in this data sheet.
Table 1: Key Timing Parameters
Data Rate (MT/s)
Speed
Grade
Industry
Nomenclature
tRCD
(ns)
tRP
(ns)
tRC
(ns)
CL = 5
667
–
CL = 4
553
CL = 3
400
-667
-53E
PC2-5300
PC2-4200
15
15
15
15
55
553
400
55
PDF: 09005aef840d5a4c
rtf36c512x72fz.pdf - Rev. A 06/10 EN
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1
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Products and specifications discussed herein are subject to change by Micron without notice.