MT18HVF6472Y Datasheet, PDF (1/15 Pages) Micron Technology – DDR2 VLP Registered DIMM (RDIMM)

1GB (x72, ECC, SR) 240-Pin DDR2 VLP RDIMM
Features
DDR2 VLP Registered DIMM (RDIMM)
MT18HVF12872(P) – 1GB
For the latest data sheet and for component data sheets, refer to Micron's Web site: www.micron.com/products/ddr2
Features
• Supports 95°C with double refresh
• Fits with the ATCA form factor
• 240-pin, registered dual in-line memory module
• Fast data transfer rates: PC2-3200, PC2-4200, or PC2-5300
• Supports ECC error detection and correction
• VDD = VDDQ = +1.8V
• VDDSPD = +1.7V to +3.6V
• JEDEC-standard 1.8V I/O (SSTL_18-compatible)
• Differential data strobe (DQS, DQS#) option
• 4-bit prefetch architecture
• DLL to align DQ and DQS transitions with CK
• Single rank
• Multiple internal device banks for concurrent
operation
• Programmable CAS# latency (CL)
• Posted CAS# additive latency (AL)
• WRITE latency = READ latency - 1 ^tCK
• Programmable burst lengths: 4 or 8
• Adjustable data-output drive strength
• 64ms, 8,192-cycle refresh
• On-die termination (ODT)
• Serial presence-detect (SPD) with EEPROM
• Gold edge contacts
Table 1: Addressing
Refresh count
Row address
Device bank address
Device page size per bank
Device configuration
Column address
Module rank address
Figure 1: 240-Pin VLP DIMM (MO-237)
Functionally equivelent to R/C “U” and “V”
Height: 17.9mm (0.705in)
Options
Marking
• Parity
• Package
240-pin DIMM (lead-free)
• Frequency/CAS latency¹
3.0ns @ CL = 5 (DDR2-667)²
3.75ns @ CL = 4 (DDR2-533)
5.0ns @ CL = 3 (DDR2-400)
• PCB height
17.9mm (1.18in)
P
Y
-667
-53E
-40E
Notes: 1. CL = CAS (READ) latency; registered mode
will add one clock cycle to CL.
2. Contact Micron for product availability.
1GB
8K
16K (A0–A13)
4 (BA0, BA1)
1KB
512Mb (128 Meg x 4)
2K (A0–A9, A11)
1 (S0#)
Table 2: Key Timing Parameters
Speed Grade
-667
-53E
-40E
Industry Nomenclature
PC2-5300
PC2-4200
PC2-3200
Data Rate (MT/s)
CL = 5
667
–
–
CL = 4
533
533
400
CL = 3
–
400
400
t_RCD
(ns)
15
15
15
t_RP
(ns)
15
15
15
t_RC
(ns)
55
55
55
PDF: 09005aef82255aba/Source: 09005aef82255a83
HVF18C64_128_256x72G.fm - Rev. B 5/06 EN
1
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©2003 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.