DDR2 SDRAM
MT47H256M4 – 32 Meg x 4 x 8 banks
MT47H128M8 – 16 Meg x 8 x 8 banks
MT47H64M16 – 8 Meg x 16 x 8 banks
Features
•VDD = +1.8V ±0.1V, VDDQ = +1.8V ±0.1V
•JEDEC-standard 1.8V I/O (SSTL_18-compatible)
•Differential data strobe (DQS, DQS#) option
•4n-bit prefetch architecture
•Duplicate output strobe (RDQS) option for x8
•DLL to align DQ and DQS transitions with CK
•8 internal banks for concurrent operation
•Programmable CAS latency (CL)
•Posted CAS additive latency (AL)
•WRITE latency = READ latency - 1 tCK
•Selectable burst lengths (BL): 4 or 8
•Adjustable data-output drive strength
•64ms, 8192-cycle refresh
•On-die termination (ODT)
•Industrial temperature (IT) option
•Automotive temperature (AT) option
•RoHS-compliant
•Supports JEDEC clock jitter specification
Options1Marking
•Configuration
–256 Meg x 4 (32 Meg x 4 x 8 banks) 256M4
–128 Meg x 8 (16 Meg x 8 x 8 banks) 128M8
–64 Meg x 16 (8 Meg x 16 x 8 banks) 64M16
•FBGA package (Pb-free) – x16
–84-ball FBGA (8mm x 12.5mm)
Rev. G, H HR
•FBGA package (Pb-free) – x4, x8
–60-ball FBGA (8mm x 11.5mm)
Rev. G HQ
•FBGA package (Pb-free) – x4, x8
–60-ball FBGA (8mm x 10mm) Rev. H CF
•FBGA package (lead solder) – x16
–84-ball FBGA (8mm x 12.5mm)
Rev. G, H HW
•FBGA package (lead solder) – x4, x8
–60-ball FBGA (8mm x 11.5mm)
Rev. G HV
•FBGA package (lead solder) – x4, x8
–60-ball FBGA (8mm x 10mm) Rev. H JN
•Timing – cycle time
–1.875ns @ CL = 7 (DDR2-1066) -187E
–2.5ns @ CL = 5 (DDR2-800) -25E
–2.5ns @ CL = 6 (DDR2-800) -25
–3.0ns @ CL = 4 (DDR2-667) -3E
–3.0ns @ CL = 5 (DDR2-667) -3
–3.75ns @ CL = 4 (DDR2-533) -37E
•Self refresh
–Standard None
–Low-power L
•Operating temperature
–Commercial (0°C ≤ TC ≤ 85°C) None
–Industrial (–40°C ≤ TC ≤ 95°C;
–40°C ≤ TA ≤ 85°C) IT
–Automotive (–40°C ≤ TC , TA ≤ 105ºC) AT
•Revision :G/:H
Note: 1. Not all options listed can be combined to
define an offered product. Use the Part
Catalog Search on www.micron.com for
product offerings and availability.
1Gb: x4, x8, x16 DDR2 SDRAM
Features
PDF: 09005aef821ae8bf
1GbDDR2.pdf – Rev. V 6/10 EN 1Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2004 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.
Table 1: Key Timing Parameters
Speed Grade Data Rate (MT/s) tRC (ns)CL = 3 CL = 4 CL = 5 CL = 6 CL = 7
-187E 400 533 667 800 1066 54
-25E 400 533 800 800 n/a 55
-25 400 533 667 800 n/a 55
-3E 400 667 667 n/a n/a 54
-3 400 533 667 n/a n/a 55
-37E 400 533 n/a n/a n/a 55
Table 2: Addressing
Parameter 256 Meg x 4 128 Meg x 8 64 Meg x 16
Configuration 32 Meg x 4 x 8 banks 16 Meg x 8 x 8 banks 8 Meg x 16 x 8 banks
Refresh count 8K 8K 8K
Row address A[13:0] (16K) A[13:0] (16K) A[12:0] (8K)
Bank address BA[2:0] (8) BA[2:0] (8) BA[2:0] (8)
Column address A[11, 9:0] (2K) A[9:0] (1K) A[9:0] (1K)
Figure 1: 1Gb DDR2 Part Numbers
Package
Pb-free
84-ball 8mm x 12.5mm FBGA
60-ball 8mm x 11.5mm FBGA
60-ball 8mm x 10.0mm FBGA
Lead solder
84-ball 8mm x 12.5mm FBGA
60-ball 8mm x 10mm FBGA
60-ball 8mm x 11.5mm FBGA
HR
HQ
CF
HW
JN
HV
Example Part Number: MT47H128M8CF-25
Configuration
256 Meg x 4
128 Meg x 8
64 Meg x 16
256M4
128M8
64M16
Speed Grade
tCK = 1.875ns, CL = 7
tCK = 2.5ns, CL = 5
tCK = 2.5ns, CL = 6
tCK = 3ns, CL = 4
tCK = 3ns, CL = 5
tCK = 3.75ns, CL = 4
-187E
-25E
-25
-3E
-3
-37E
-
Configuration
MT47H Package Speed
Revision
Revision
:G/:H
:
Low power
Industrial temperature
Automotive temperature
L
IT
AT
{
Note: 1. Not all speeds and configurations are available in all packages.
1Gb: x4, x8, x16 DDR2 SDRAM
Features
PDF: 09005aef821ae8bf
1GbDDR2.pdf – Rev. V 6/10 EN 2Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2004 Micron Technology, Inc. All rights reserved.
FBGA Part Number System
Due to space limitations, FBGA-packaged components have an abbreviated part marking that is different from the
part number. For a quick conversion of an FBGA code, see the FBGA Part Marking Decoder on Micron’s Web site:
http://www.micron.com.
1Gb: x4, x8, x16 DDR2 SDRAM
Features
PDF: 09005aef821ae8bf
1GbDDR2.pdf – Rev. V 6/10 EN 3Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2004 Micron Technology, Inc. All rights reserved.
