參數資料
型號: DP8440V
英文描述: DRAM Controller
中文描述: DRAM控制器
文件頁數: 2/46頁
文件大?。?/td> 644K
代理商: DP8440V
DRAM
Controller
Maximum Clock
Frequency
Package
Type
Bus Width
Supporting
Largest DRAM
Possible
DP8440V-40
40 MHz
84-Pin PLCC
8, 16, 32
16 Mbits
DP8440VLJ-40
40 MHz
100-Pin PQFP
8, 16, 32
16 Mbits
DP8440VLJ-25
25 MHz
100-Pin PQFP
8, 16, 32
16 Mbits
DP8441VLJ-40
40 MHz
100-Pin PQFP
8, 16, 32, 64
64 Mbits
DP8441VLJ-25
25 MHz
100-Pin PQFP
8, 16, 32, 64
64 Mbits
Table of Contents
1.0 CONNECTION DIAGRAMS
2.0 FUNCTIONAL INTRODUCTION
3.0 SIGNAL DESCRIPTION
3.1 Address and Control Signals
3.2 DRAM Control Signals
3.3 Refresh Signals
3.4 Reset and Programming Signals
3.5 Clock Inputs
3.6 Power Signals and Capacitor Input
4.0 PROGRAMMING AND RESETTING
4.1 Reset
4.2 Programming Sequence
4.3 Programming Selection Bits
5.0 ACCESS MODES
5.1 Opening Access
5.2 Normal Mode
5.3 Page Mode
5.4 Burst Access
5.5 Inner Page Burst Access
6.0 REFRESH MODES
6.1 Auto-Internal Refresh
6.2 Externally Controlled Refresh
6.3 Error Scrubbing during Refresh
6.4 Extending Refresh
6.5 Refresh Types
7.0 WAIT SUPPORT
7.1 DTACK During Opening Access
7.2 DTACK During Page Access
7.3 DTACK During Burst Access
7.4 Next Address or Early DTACK Support
8.0 ABSOLUTE MAXIMUM RATINGS
9.0 DC ELECTRICAL CHARACTERISTICS
10.0 LOAD CAPACITANCE
11.0 AC TIMING PARAMETERS
12.0 AC TIMING WAVEFORMS
CLK and DECLK Timing
Refresh Timing
Refresh and Access Timing
Programming and Initialization Period Timing
Normal Mode Access Timing
Page Mode Access Timing
Burst Mode Access Timing
13.0 ERRATA
14.0 PHYSICAL DIMENSIONS
2
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相關代理商/技術參數
參數描述
DP8440V-40 制造商:NSC 制造商全稱:National Semiconductor 功能描述:microCMOS Programmable 16/64 Mbit Dynamic RAM Controller/Driver
DP8440VLJ-25 制造商:Rochester Electronics LLC 功能描述:- Bulk
DP8440VLJ-40 制造商:NSC 制造商全稱:National Semiconductor 功能描述:microCMOS Programmable 16/64 Mbit Dynamic RAM Controller/Driver
DP8441 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
DP84412J 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DRAM Controller