Products and specifications discussed herein are subject to change by Micron without notice.
512MB, 1GB (x72, ECC, SR) 184-Pin DDR SDRAM RDIMM
Features
PDF: 09005aef8074e85b/Source: 09005aef8072fe49 Micron Technology, Inc., reserves the right to change products or specifications without notice.
DDF18C64_128x72.fm - Rev. F 9/08 EN
1 ©2003 Micron Technology, Inc. All rights reserved.
DDR SDRAM RDIMM
MT18VDDF6472 – 512MB
1
MT18VDDF12872 – 1GB
For component data sheets, refer to Micron’s Web site: www.micron.com
Features
• 184-pin, registered dual in-line memory module
(RDIMM)
• Fast data transfer rates: PC2100, PC2700, or PC3200
• 512MB (64 Meg x 72) and 1GB (128 Meg x 72)
• Supports ECC error detection and correction
•V
DD = VDDQ = +2.5V (-40B: VDD = 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
184-Pin RDIMM (MO-206) Figures
Figure 1: R/C J (-40B)
PCB height: 28.58mm (1.125in)
Figure 2: R/C C (-335, -265)
Notes: 1. Not recommended for new designs.
2. Contact Micron for industrial temperature
module offerings.
3. CL = CAS (READ) latency; registered mode
will add one clock cycle to CL.
Options Marking
• Operating temperature
2
– 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
3
– 5.0ns (200 MHz), 400 MT/s, CL = 3 -40B
– 6.0ns (167 MHz), 333 MT/s, CL = 2.5 -335
– 7.5ns (133 MHz), 266 MT/s, CL = 2.5
1
-265
PCB height: 28.58mm (1.125in)