512MB, 1GB, 2GB, 4GB (x64, DR) 240-Pin DDR2 UDIMM
Features
DDR2 SDRAM UDIMM
MT16HTF6464AY – 512MB
MT16HTF12864AY – 1GB
MT16HTF25664AY – 2GB
MT16HTF51264AY – 4GB
Features
•
240-pin, unbuffered dual in-line memory module
•
Fast data transfer rates: PC2-8500, PC2-6400,
PC2-5300, PC2-4200, or PC2-3200
•
512MB (64 Meg x 64), 1GB (128 Meg x 64),
2GB (256 Meg x 64), 4GB (512 Meg x 64)
•
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
•
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
•
Dual rank
Figure 1: 240-Pin UDIMM (MO-237 R/C B and E)
Module height: 30.0mm (1.18in)
Options
•
Operating temperature
–
Commercial (0°C
≤
T
A
≤
+70°C)
–
Industrial (–40°C
≤
T
A
≤
+85°C)
•
Package
–
240-pin DIMM (lead-free)
•
Frequency/CL
–
1.875ns @ CL = 7 (DDR2-1066)
–
2.5ns @ CL = 5 (DDR2-800)
–
2.5ns @ CL = 6 (DDR2-800)
–
3ns @ CL = 5 (DDR2-667)
–
3.75ns @ CL = 4 (DDR2-533
–
5.0ns @ CL = 3 (DDR2-400)
Notes:
Marking
None
I
Y
-1GA
-80E
-800
-667
-53E
-40E
1. Contact Micron for industrial temperature
module offerings.
2. CL = CAS (READ) latency.
3. Available only in 2GB, Rev. E devices.
4. Not available in 512MB, 4GB module density.
5. Not recommended for new designs.
Table 1: Key Timing Parameters
Speed
Grade
-1GA
-80E
-800
-667
-53E
-40E
Industry
Nomenclature
PC2-8500
PC2-6400
PC2-6400
PC2-5300
PC2-4200
PC2-3200
Data Rate (MT/s)
CL = 7
1066
CL = 6
800
800
800
–
–
–
CL = 5
667
800
667
667
–
–
CL = 4
533
533
533
553
553
400
CL = 3
400
400
400
400
400
400
t
RCD
t
RP
t
RC
(ns)
13.125
12.5
15
15
15
15
(ns)
13.125
12.5
15
15
15
15
(ns)
58.125
57.5
60
60
55
55
PDF: 09005aef80f09084
htf16c64_128_256x64ay.pdf - Rev. G 3/10 EN
1
Products and specifications discussed herein are subject to change by Micron without notice.
Micron Technology, Inc. reserves the right to change products or specifications without notice.
©
2003 Micron Technology, Inc. All rights reserved.
MICRON [ MICRON TECHNOLOGY ]
