參數(shù)資料
型號(hào)： W942508CH-75
廠商： WINBOND ELECTRONICS CORP
元件分類： DRAM
英文描述： 8M x 4 BANKS x 8 BIT DDR SDRAM
中文描述： 32M X 8 DDR DRAM, 0.75 ns, PDSO66
封裝： 0.400 X 0.875 INCH, 0.65 MM PITCH, TSOP2-66
文件頁(yè)數(shù)： 1/47頁(yè)
文件大?。?/td> 1317K
代理商： W942508CH-75
W942508CH
8M
×
4 BANKS
×
8 BIT DDR SDRAM
Publication Release Date: May 21, 2003
- 1 -
Revision A3
Table of Contents-
1.
2.
3.
4.
5.
6.
7.
7.1
7.2
7.3
7.4
7.5
7.6
7.7
8.
8.1
8.2
8.3
8.4
9.
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
GENERAL DESCRIPTION ..................................................................................................3
FEATURES..........................................................................................................................3
KEY PARAMETERS............................................................................................................4
PIN CONFIGURATION........................................................................................................5
PIN DESCRIPTION..............................................................................................................6
BLOCK DIAGRAM...............................................................................................................7
ELECTRICAL CHARACTERISTICS....................................................................................8
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
Operation Mode .................................................................................................................15
Simplified Truth Table........................................................................................................15
Function Truth Table..........................................................................................................16
Function Truth Table for CKE ............................................................................................19
Simplified State Diagram....................................................................................................20
FUNCTIONAL DESCRIPTION...........................................................................................21
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
10.
TIMING WAVEFORMS............................................................................................................. 29
10.1
Command Input Timing......................................................................................................29
10.2
Timing of the CLK Signals..................................................................................................29
10.3
Read Timing (Burst Length = 4).........................................................................................30
10.4
Write Timing (Burst Length = 4).........................................................................................31
10.5
DM, DATA MASK (W942508CH/W942504CH).................................................................32
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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