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W971GG8JB Dataheets PDF



Part Number W971GG8JB
Manufacturers Winbond
Logo Winbond
Description 16M X 8 BANKS X 8 BIT DDR2 SDRAM
Datasheet W971GG8JB DatasheetW971GG8JB Datasheet (PDF)

W971GG8JB 16M  8 BANKS  8 BIT DDR2 SDRAM Table of Contents- 1. GENERAL DESCRIPTION 4 2. FEATURES ....4 3. ORDER INFORMATION .....

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W971GG8JB 16M  8 BANKS  8 BIT DDR2 SDRAM Table of Contents- 1. GENERAL DESCRIPTION ...................................................................................................................4 2. FEATURES ...........................................................................................................................................4 3. ORDER INFORMATION .......................................................................................................................5 4. KEY PARAMETERS .............................................................................................................................5 5. BALL CONFIGURATION ......................................................................................................................6 6. BALL DESCRIPTION............................................................................................................................7 7. BLOCK DIAGRAM ................................................................................................................................8 8. FUNCTIONAL DESCRIPTION..............................................................................................................9 8.1 Power-up and Initialization Sequence ...................................................................................................9 8.2 Mode Register and Extended Mode Registers Operation ...................................................................10 8.2.1 Mode Register Set Command (MRS)...............................................................................10 8.2.2 Extend Mode Register Set Commands (EMRS) ..............................................................11 8.2.2.1 Extend Mode Register Set Command (1), EMR (1)................................................11 8.2.2.2 DLL Enable/Disable................................................................................................12 8.2.2.3 Extend Mode Register Set Command (2), EMR (2)................................................13 8.2.2.4 Extend Mode Register Set Command (3), EMR (3)................................................14 8.2.3 Off-Chip Driver (OCD) Impedance Adjustment ................................................................15 8.2.3.1 Extended Mode Register for OCD Impedance Adjustment ....................................16 8.2.3.2 OCD Impedance Adjust..........................................................................................16 8.2.3.3 Drive Mode .............................................................................................................17 8.2.4 On-Die Termination (ODT) ...............................................................................................18 8.2.5 ODT related timings .........................................................................................................18 8.2.5.1 MRS command to ODT update delay.............................................


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