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W942516CH Datasheet

  • W942516CH

  • 4M X 4 BANKS X 16 BIT DDR SDRAM

  • 47頁

  • WINBOND

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W942516CH
4M
脳
4 BANKS
脳
16 BIT DDR SDRAM
Table of Contents-
1.
2.
3.
4.
5.
6.
7.
GENERAL DESCRIPTION ......................................................................................................... 3
FEATURES ................................................................................................................................. 3
KEY PARAMETERS ................................................................................................................... 4
PIN CONFIGURATION ............................................................................................................... 5
PIN DESCRIPTION..................................................................................................................... 6
BLOCK DIAGRAM ...................................................................................................................... 7
ELECRICAL CHARACTERISTICS ............................................................................................. 8
7.1
7.2
7.3
7.4
7.5
7.6
7.7
Absolute Maximum Ratings ................................................................................................. 8
Recommended DC Operating Conditions............................................................................ 8
Capacitance ......................................................................................................................... 9
Leakage and Output Buffer Characteristics ......................................................................... 9
DC Characteristics ............................................................................................................. 10
AC Characteristics and Operating Condition ..................................................................... 11
AC Test Conditions ............................................................................................................ 13
Simplified Truth Table ........................................................................................................ 15
Function Truth Table .......................................................................................................... 16
Function Truth Table for CKE ............................................................................................ 19
Simplified Stated Diagram.................................................................................................. 20
Power Up Sequence .......................................................................................................... 21
Command Function............................................................................................................ 21
Read Operation.................................................................................................................. 24
Write Operation .................................................................................................................. 24
Precharge........................................................................................................................... 24
Burst Termination............................................................................................................... 25
Refresh Operation.............................................................................................................. 25
Power Down Mode............................................................................................................. 25
Mode Register Operation ................................................................................................... 25
Command Input Timing...................................................................................................... 29
Timing of the CLK Signals.................................................................................................. 29
8.
OPERATION MODE ................................................................................................................. 15
8.1
8.2
8.3
8.4
9.
FUNCTIONAL DESCRIPTION.................................................................................................. 21
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10.
TIMING WAVEFORMS ............................................................................................................. 29
10.1
10.2
-1-
Publication Release Date: May 20, 2003
Revision A2

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