MT18HTF25672AZ-667H1 Micron Technology Inc, MT18HTF25672AZ-667H1 Datasheet
MT18HTF25672AZ-667H1
Specifications of MT18HTF25672AZ-667H1
Related parts for MT18HTF25672AZ-667H1
MT18HTF25672AZ-667H1 Summary of contents
Page 1
... DDR2 SDRAM UDIMM MT18HTF12872AZ – 1GB MT18HTF25672AZ – 2GB MT18HTF51272AZ – 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 • 1GB (128 Meg x 72), 2GB (256 Meg x 72), 4GB (512 Meg x 72) • ...
Page 2
... The data sheet for the base device can be found on Micron’s Web site. Notes: 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: MT18HTF25672AZ-667H1. PDF: 09005aef83c6d17f htf18c128_256_512x72az.fm - Rev. C 12/10 EN ...
Page 3
Pin Assignments Table 6: Pin Assignments 240-Pin UDIMM Front Pin Symbol Pin Symbol Pin DQ19 61 REF DQ0 33 DQ24 63 4 DQ1 34 DQ25 ...
Page 4
... Pin Descriptions The pin description table below is a comprehensive list of all possible pins for all DDR2 modules. All pins listed may not be supported on this module. See Pin Assignments for information specific to this module. Table 7: Pin Descriptions Symbol Type Ax Input BAx Input ...
Page 5
... SPD EEPROM power supply: 1.7–3.6V. Reference voltage: V /2. DD Ground. No connect: These pins are not connected on the module. No function: These pins are connected within the module, but provide no functionality. Not used: These pins are not used in specific module configurations/operations. Reserved for future use. 5 Pin Descriptions and V ...
Page 6
Functional Block Diagram Figure 2: Functional Block Diagram S1# S0 DQS0 DQS0 DM0 DQ0 DQ DQ1 DQ DQ2 DQ DQ3 DQ DQ4 DQ DQ5 DQ DQ6 DQ DQ7 DQ DQS1# DQS1 DM1 DM DQ8 DQ DQ9 ...
Page 7
... DRAM core and eight corresponding n-bit-wide, one-half-clock-cycle data trans- fers at the I/O pins. DDR2 modules use two sets of differential signals: DQS, DQS# to capture data and CK and CK# to capture commands, addresses, and control signals. Differential clocks and data strobes ensure exceptional noise immunity for these signals and provide precise crossing points to capture input signals ...
Page 8
... Electrical Specifications Stresses greater than those listed may cause permanent damage to the module. This is a stress rating only, and functional operation of the module at these or any other condi- tions outside those indicated in the device data sheet are not implied. Exposure to absolute maximum rating conditions for extended periods may adversely affect reliability. ...
Page 9
... Component specifications are available on Micron's Web site. Module speed grades cor- relate with component speed grades. Table 9: Module and Component Speed Grades DDR2 components may exceed the listed module speed grades; module may not be available in all listed speed grades Module Speed Grade -1GA ...
Page 10
IDD Specifications Table 10: DDR2 I Specifications and Conditions – 1GB (Die Revision G) DD Values shown for MT47H64M8 DDR2 SDRAM only and are computed from values specified in the 512Mb (64 Meg x 8) component data sheet Parameter Operating ...
Page 11
... DD DD commands; Address bus inputs are stable during deselects; Data bus inputs are switch- ing 1. Value calculated as one module rank in this operating condition; all other module ranks Notes: 2. Value calculated reflects all module ranks in this operating condition. Table 11: DDR2 I Specifications and Conditions – 2GB (Die Revisions E and G) ...
Page 12
... DD DD HIGH between valid commands; Address bus inputs are stable during deselects; Data bus inputs are switching 1. Value calculated as one module rank in this operating condition; all other module ranks Notes: 2. Value calculated reflects all module ranks in this operating condition. Table 12: DDR2 I Specifications and Conditions – ...
Page 13
... DD DD HIGH between valid commands; Address bus inputs are stable during deselects; Data bus inputs are switching 1. Value calculated as one module rank in this operating condition; all other module ranks Notes: 2. Value calculated reflects all module ranks in this operating condition. Table 13: DDR2 I Specifications and Conditions – ...
Page 14
... DD DD HIGH between valid commands; Address bus inputs are stable during deselects; Data bus inputs are switching 1. Value calculated as one module rank in this operating condition; all other module ranks Notes: 2. Value calculated reflects all module ranks in this operating condition. PDF: 09005aef83c6d17f htf18c128_256_512x72az ...
Page 15
Serial Presence-Detect For the latest SPD data, refer to Micron's SPD page: www.micron.com/SPD. Table 14: SPD EEPROM Operating Conditions Parameter/Condition Supply voltage Input high voltage: logic 1; All inputs Input low voltage: logic 0; All inputs Output low voltage: I ...
Page 16
... TYP 123.0 (4.84) TYP Back view U13 U14 U15 U16 5.0 (0.197) TYP 63.0 (2.48) additional design dimensions. times occur. 16 Module Dimensions 17.78 (0.7) TYP 10.0 (0.394) TYP Pin 120 U17 U18 U19 Pin 121 TYP Micron Technology, Inc. reserves the right to change products or specifications without notice. ...