Products and specifications discussed herein are subject to change by Micron without notice.
512MB (x72, ECC, SR) 184-Pin DDR VLP RDIMM
Features
PDF: 09005aef81c737fb/Source: 09005aef81c7379d Micron Technology, Inc., reserves the right to change products or specifications without notice.
DVF9C64x72.fm - Rev. B 10/07 EN
1 ©2005 Micron Technology, Inc. All rights reserved.
DDR SDRAM VLP RDIMM
MT9VDVF6472 – 512MB
For component data sheets, refer to Micron’s Web site: www.micron.com
Features
• 184-pin, very low profile registered dual in-line
memory module (VLP RDIMM)
• Fast data transfer rates: PC2700 or PC3200
• 512MB (64 Meg x 72)
• Supports ECC error detection and correction
•V
DD = VDDQ = +2.5V
(-40B V
DD = VDDQ = +2.6V)
•V
DDSPD = +2.3V to +3.6V
• 2.5V I/O (SSTL_2-compatible)
• Internal, pipelined, double data rate (DDR)
2n-prefetch architecture
• Bidirectional data strobe (DQS) transmitted/
received with data—that is, source-synchronous
data capture
• Differential clock inputs (CK and CK#)
• Multiple internal device banks for concurrent
operation
•Single rank
• Selectable burst lengths (BL): 2, 4, or 8
• Auto precharge option
• Auto refresh and self refresh modes: 7.8125µs
maximum average periodic refresh interval
• Serial presence-detect (SPD) with EEPROM
• Selectable CAS latency (CL) for maximum
compatibility
• Gold edge contacts
Figure 1: 184-Pin VLP RDIMM (MO-206)
Notes: 1. Contact Micron for industrial temperature
module offerings.
2. CL = CAS (READ) latency; registered mode
adds one clock cycle to CL.
Options Marking
• Operating temperature
1
– Commercial (0°C ≤ T
A
≤ +70°C) None
– Industrial (–40°C ≤ T
A
≤ +85°C) I
•Package
– 184-pin DIMM (standard) G
– 184-pin DIMM (Pb-free) Y
• Memory clock, speed, CAS latency
2
– 5.0ns (200 MHz), 400 MT/s, CL = 3 -40B
– 6.0ns (166 MHz), 333 MT/s, CL = 2.5 -335
PCB height: 18.29mm (0.72in)
Notes: 1. The values of
t
RCD and
t
RP for -335 modules show 18ns to align with industry specifications;
actual DDR SDRAM device specifications are 15ns.
Table 1: Key Timing Parameters
Speed
Grade
Industry
Nomenclature
Data Rate (MT/s)
t
RCD
(ns)
t
RP
(ns)
t
RC
(ns) NotesCL = 3 CL = 2.5 CL = 2
-40B PC3200 400 333 266 15 15 55
-335 PC2700 – 333 266 18 18 60 1