Datasheet > DP84322

DP84322

更新时间： 2024-09-28 23:47:59

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其他 - ETC		/
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16页	312K
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DP84322 数据手册

March 1986

DP84322 Dynamic RAM Controller Interface Circuit

for the 68000 CPU

General Description

The DP84322 dynamic RAM controller interface is a Pro-

Features

Provides 3-chip solution for the 68000 CPU and dynam-

ic RAM interface (DP84300, DP84322, & DP8409A)

Works with all 68000 speed versions

grammable Array Logic (PAL ) device which allows for easy

interface between the DP8409A, 17, 18, 19, 28, 29 dynamic

RAM Controllers and the 68000/008/010 microprocessors.

Possibility of operation at 8 MHz with no wait states

Performs hidden refresh

The DP84322 supplies all the control signals needed to per-

form memory read, write and refresh. Logic is included for

inserting a wait state when using fast CPUs.

DTACK is automatically inserted for both memory ac-

cess and memory refresh

Performs forced refresh using typically 4 CPU clocks

Standard National Semiconductor PAL part

(DMPAL16R4)

PAL logic equations can be modified by the user for his

specific application and programmed into any of the

PAL in the National Semiconductor PAL family, includ-

ing the new high speed PALs.

Connection and Block Diagrams

Dual-In-Line Package

TL/F/5003–1

Top View

Order Number DP84322J or DP84322N

See NS Package Number J20A or N20A

TL/F/5003–2

TRI-STATEÉ is a registered trademark of National Semiconductor Corp.

PALÉ is a registered trademark of and used under license from Monolithic Memories, Inc.

1995 National Semiconductor Corporation

TL/F/5003

RRD-B30M75/Printed in U. S. A.

12 3 4 5 6 7...16

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与DP84322相关器件

型号	品牌	获取价格	描述	数据表
DP84322J	NSC	获取价格	IC SPECIALTY MICROPROCESSOR CIRCUIT, CDIP20, CERAMIC, DIP-20, Microprocessor IC:Other
DP84322J3	TI	获取价格	IC,MEMORY CONTROLLER,BIPOLAR,DIP,20PIN
DP84322N	NSC	获取价格	IC SPECIALTY MICROPROCESSOR CIRCUIT, PDIP20, PLASTIC, DIP-20, Microprocessor IC:Other
DP84322N3	TI	获取价格	IC,MEMORY CONTROLLER,BIPOLAR,DIP,20PIN
DP84322N-3/A+	TI	获取价格	IC,MEMORY CONTROLLER,BIPOLAR,DIP,20PIN
DP84322N-3/B+	ETC	获取价格	DRAM Controller
DP8432V	NSC	获取价格	microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers
DP8432V-33	NSC	获取价格	microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers
DP84332N3	TI	获取价格	IC,MEMORY CONTROLLER,BIPOLAR,DIP,20PIN
DP84332N-3	ETC	获取价格	DRAM Controller