DDR2 SDRAM RDIMM
MT18HTF12872PDZ – 1GB
MT18HTF25672PDZ – 2GB
MT18HTF51272PDZ – 4GB
Features
•
240-pin, registered dual in-line memory module
•
Fast data transfer rates: PC2-3200, PC2-4200,
PC2-5300, or PC2-6400
•
1GB (128 Meg x 72), 2GB (256 Meg x 72), 4GB (512
Meg x 72)
•
Supports ECC error detection and correction
•
V
DD
= V
DDQ
= +1.8V
•
V
DDSPD
= 1.7–3.6V
•
JEDEC-standard 1.8V I/O (SSTL_18-compatible)
•
Differential data strobe (DQS, DQS#) option
•
4n-bit prefetch architecture
•
Dual rank
•
Multiple internal device banks for concurrent
operation
•
Programmable CAS# latency (CL)
•
Posted CAS# additive latency (AL)
•
WRITE latency = READ latency - 1
t
CK
•
Programmable burst lengths (BL): 4 or 8
•
Adjustable data-output drive strength
•
64ms, 8192-cycle refresh
•
On-die termination (ODT)
•
Serial presence-detect (SPD) with EEPROM
•
Gold edge contacts
•
Halogen-free
Figure 1: 240-Pin RDIMM (MO-237 R/C G)
Module height: 30mm (1.181in)
Options Marking
•
Parity P
•
Operating temperature
– Commercial (0°C ≤ T
A
≤ +70°C)
None
– Industrial (–40°C ≤ T
A
≤ +85°C)
1
T
•
Package
–
240-pin DIMM (halogen-free) Z
•
Frequency/CL
2
–
2.5ns @ CL = 5 (DDR2-800) -80E
–
2.5ns @ CL = 6 (DDR2-800) -800
–
3.0ns @ CL = 5 (DDR2-667) -667
Notes:
1. Contact Micron for industrial temperature
module offerings.
2. CL = CAS (READ) latency; registered mode
will add one clock cycle to CL.
Table 1: Key Timing Parameters
Speed
Grade
Industry
Nomenclature
Data Rate (MT/s) t
RCD
(ns)
t
RP
(ns)
t
RC
(ns)CL = 6 CL = 5 CL = 4 CL = 3
-80E PC2-6400 800 800 533 400 12.5 12.5 55
-800 PC2-6400 800 667 533 400 15 15 55
-667 PC2-5300
–
667 553 400 15 15 55
-53E PC2-4200
– –
553 400 15 15 55
-40E PC2-3200
– –
400 400 15 15 55
1GB, 2GB, 4GB (x72, ECC, DR) 240-Pin DDR2 SDRAM RDIMM
Features
PDF: 09005aef83d3d893
htf18c128_256_512x72pdz.pdf - Rev. D 11/10 EN
1
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2009 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.