1GB, 2GB, 4GB (x64, DR) 240-Pin DDR2 SDRAM UDIMM Features DDR2 SDRAM UDIMM MT16HTF12864AZ 1GB MT16HTF25664AZ 2GB MT16HTF51264AZ 4GB Figure 1: 240-Pin UDIMM (MO-237 R/C E) Features Module height: 30mm (1.18in) 240-pin, unbuffered dual in-line memory module Fast data transfer rates: PC2-8500, PC2-6400, PC2-5300, PC2-4200, or PC2-3200 1GB (128 Meg x 64), 2GB (256 Meg x 64), 4GB (512 Meg x 64) V = V = 1.8V DD DDQ Options Marking V = 1.73.6V DDSPD Operating temperature JEDEC-standard 1.8V I/O (SSTL 18-compatible) Commercial (0C T +70C) None A Differential data strobe (DQS, DQS ) option 1 Industrial (40C T +85C) I A 4n-bit prefetch architecture Package 240-pin DIMM (halogen-free) Z Multiple internal device banks for concurrent 2 Frequency/CL operation 3 1.875ns CL = 7 (DDR2-1066) -1GA Programmable CAS latency (CL) 2.5ns CL = 5 (DDR2-800) -80E Posted CAS additive latency (AL) 2.5ns CL = 6 (DDR2-800) -800 t WRITE latency = READ latency - 1 CK 3ns CL = 5 (DDR2-667) -667 Programmable burst lengths (BL): 4 or 8 1. Contact Micron for industrial temperature Notes: Adjustable data-output drive strength module offerings. 64ms, 8192-cycle refresh 2. CL = CAS (READ) latency. On-die termination (ODT) 3. Not recommended for new designs. Serial presence-detect (SPD) with EEPROM Gold edge contacts Dual rank Halogen-free Table 1: Key Timing Parameters Data Rate (MT/s) t t t Speed Industry RCD RP RC Grade Nomenclature CL = 7 CL = 6 CL = 5 CL = 4 CL = 3 (ns) (ns) (ns) -1GA PC2-8500 1066 800 667 533 400 13.125 13.125 58.125 -80E PC2-6400 800 800 533 400 12.5 12.5 57.5 -800 PC2-6400 800 667 533 400 15 15 60 -667 PC2-5300 667 553 400 15 15 60 -53E PC2-4200 553 400 15 15 55 -40E PC2-3200 400 400 15 15 55 PDF: 09005aef83b82bc1 Micron Technology, Inc. reserves the right to change products or specifications without notice. 1 htf16c128 256 512x64az Rev. D 11/11 EN 2009 Micron Technology, Inc. All rights reserved. Products and specifications discussed herein are subject to change by Micron without notice.1GB, 2GB, 4GB (x64, DR) 240-Pin DDR2 SDRAM UDIMM Features Table 2: Addressing Parameter 1GB 2GB 4GB Refresh count 8K 8K 8K Row address 16K A 13:0 16K A 13:0 32K A 14:0 Device bank address 4 BA 1:0 8 BA 2:0 8 BA 2:0 Device configuration 512Mb (64 Meg x 8) 1Gb (128 Meg x 8) 2Gb (256 Meg x 8) Column address 1K A 9:0 1K A 9:0 1K A 9:0 Module rank address 2 S 1:0 2 S 1:0 2 S 1:0 Table 3: Part Numbers and Timing Parameters 1GB Modules 1 Base device: MT47H64M8, 512Mb DDR2 SDRAM Module Module Memory Clock/ Clock Cycles 2 t t Part Number Density Configuration Bandwidth Data Rate (CL- RCD- RP) MT16HTF12864A(I)Z-1GA 1GB 128 Meg x 64 8.5 GB/s 1.875ns/1066 MT/s 7-7-7 MT16HTF12864A(I)Z-80E 1GB 128 Meg x 64 6.4 GB/s 2.5ns/800 MT/s 5-5-5 MT16HTF12864A(I)Z-800 1GB 128 Meg x 64 6.4 GB/s 2.5ns/800 MT/s 6-6-6 MT16HTF12864A(I)Z-667 1GB 128 Meg x 64 5.3 GB/s 3.0ns/667 MT/s 5-5-5 Table 4: Part Numbers and Timing Parameters 2GB Modules 1 Base device: MT47H128M8, 1Gb DDR2 SDRAM Module Module Memory Clock/ Clock Cycles 2 t t Part Number Density Configuration Bandwidth Data Rate (CL- RCD- RP) MT16HTF25664A(I)Z-1GA 2GB 256 Meg x 64 8.5 GB/s 1.875ns/1066 MT/s 7-7-7 MT16HTF25664A(I)Z-80E 2GB 256 Meg x 64 6.4 GB/s 2.5ns/800 MT/s 5-5-5 MT16HTF25664A(I)Z-800 2GB 256 Meg x 64 6.4 GB/s 2.5ns/800 MT/s 6-6-6 MT16HTF25664A(I)Z-667 2GB 256 Meg x 64 5.3 GB/s 3.0ns/667 MT/s 5-5-5 Table 5: Part Numbers and Timing Parameters 4GB Modules 1 Base device: MT47H256M8, 2Gb DDR2 SDRAM Module Module Memory Clock/ Clock Cycles 2 t t Part Number Density Configuration Bandwidth Data Rate (CL- RCD- RP) MT16HTF51264A(I)Z-1GA 4GB 512 Meg x 64 8.5 GB/s 1.875ns/1066 MT/s 7-7-7 MT16HTF51264A(I)Z-80E 4GB 512 Meg x 64 6.4 GB/s 2.5ns/800 MT/s 5-5-5 MT16HTF51264A(I)Z-800 4GB 512 Meg x 64 6.4 GB/s 2.5ns/800 MT/s 6-6-6 MT16HTF51264A(I)Z-667 4GB 512 Meg x 64 5.3 GB/s 3.0ns/667 MT/s 5-5-5 Notes: 1. The data sheet for the base device can be found on Microns Web site. 2. All part numbers end with a two-place code (not shown) that designates component and PCB revisions. Consult factory for current revision codes. Example: MT16HTF51264AZ-80EH1. PDF: 09005aef83b82bc1 Micron Technology, Inc. reserves the right to change products or specifications without notice. 2 htf16c128 256 512x64az Rev. D 11/11 EN 2009 Micron Technology, Inc. All rights reserved.