Document Outline

• Revision Details
• Contents
• 1. Description
  • 1.1 Device Features & Ordering Information
    • 1.1.1 Key Features
  • 1.2 Pin Configuration
    • 1.2.1 128Mx4 DDR2 Pin Configuration
    • 1.2.2 64Mx8 DDR2 PIN CONFIGURATION
    • 1.2.3 32Mx16 DDR2 PIN CONFIGURATION
  • 1.3 PIN DESCRIPTION
• 2. Functional Description
  • 2.1 Simplified State Diagram
  • 2.2 Functional Block Diagram
    • 2.2.1 Functional Block Diagram(128Mx4)
    • 2.2.2 Functioal Block Diagram (64Mx8)
    • 2.2.3 Functional Block Diagram (32Mx16)
  • 2.3 Basic Function & Operation of DDR2 SDRAM
    • 2.3.1 Power up and Initialization
    • 2.3.2 Programming the Mode and Extended Mode Registers
      • 2.3.2.1 DDR2 SDRAM Mode Register Set (MRS)
      • 2.3.2.2 DDR2 SDRAM Extended Mode Register Set
      • 2.3.2.3 Off-Chip Driver (OCD) Impedance Adjustment
      • 2.3.2.4 ODT (On Die Termination)
  • 2.4 Bank Activate Command
  • 2.5 Read and Write Access Modes
    • 2.5.1 Posted CAS
    • 2.5.2 Burst Mode Operation
    • 2.5.3 Burst Read Command
    • 2.5.4 Burst Write Operation
    • 2.5.5 Write data mask
  • 2.6 Precharge Operation
  • 2.7 Auto Precharge Operation
  • 2.8 Refresh Commands
    • 2.8.1 Auto Refresh Command
    • 2.8.2 Self Refresh Operation
  • 2.9 Power-Down
  • 2.10 Asynchronous CKE Low Event
  • 2.11 No Operation Command
  • 2.12 Deselect Command
• 3. Truth Tables
  • 3.1 Command truth table.
  • 3.2 Clock Enable (CKE) Truth Table for Synchronous Transitions
• 4. Operating Conditions
  • 4.1 Absolute Maximum DC Ratings
  • 4.2 Operating Temperature Condition
• 5. AC & DC Operating Conditons
  • 5.1 DC Operation Conditions
    • 5.1.1 Recommended DC Operating Conditions (SSTL_1.8)
    • 5.1.2 ODT DC electrical characteristics
  • 5.2 DC & AC Logic Input Levels
    • 5.2.1 Input DC Logic Level
    • 5.2.2 Input AC Logic Level
    • 5.2.3 AC Input Test Conditions
    • 5.2.4 Differential Input AC logic Level
    • 5.2.5 Differential AC output parameters
    • 5.2.6 Overshoot/Undershoot Specification
  • 5.3 Output Buffer Levels
    • 5.3.1 Output AC Test Conditions
    • 5.3.2 Output DC Current Drive
    • 5.3.3 OCD defalut characteristics
  • 5.4 Default Output V-I characteristics
    • 5.4.1 Full Strength Default Pulldown Driver Characteristics
    • 5.4.2 Full Strength Default Pullup Driver Characteristics
    • 5.4.3 Calibrated Output Driver V-I Characteristics
  • 5.5 Input/Output Capacitance
• 6. IDD Specifications & Measurement Conditions
  • 6.1 IDD Specifications
  • 6.2 IDD Meauarement Conditions
• 7. AC Timing Specifications
  • 7.1 Timing Parameters by Speed Grade
  • 7.2 General notes, which may apply for all AC parameters
  • 7.3 Specific Notes for dedicated AC parameters
• 8. Package Dimensions
  • 8.1 Package Dimension(x4,x8)
  • 8.2 Package Dimension(x16)