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    Rochester Electronics LLC DP8420V-33

    DRAM CONTROLLER, 256K X 1 PQCC68
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    DigiKey DP8420V-33 Bulk 9
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    Rochester Electronics LLC DP8420AV-20

    DRAM CONTROLLER, CMOS
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    DigiKey DP8420AV-20 Bulk 14
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    Rochester Electronics LLC DP8420AV-25

    DRAM CONTROLLER, CMOS
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    Rochester Electronics LLC DP8420AVX-25

    DRAM CONTROLLER, CMOS
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    DigiKey DP8420AVX-25 Bulk 11
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    National Semiconductor Corporation DP8420AV-20

    IC,MEMORY CONTROLLER,CMOS,LDCC,68PIN
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    Quest Components DP8420AV-20 744
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    DP8420AV-20 203
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    DP8420AV-20 64
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    DP8420AV-20 32
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    Rochester Electronics DP8420AV-20 1,296 1
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    Bristol Electronics DP8420AV-20 80 1
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    DP8420 Datasheets (10)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    DP8420A National Semiconductor microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Original PDF
    DP8420AV-20 National Semiconductor microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Original PDF
    DP8420AV-20 Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    DP8420AV-25 National Semiconductor microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Original PDF
    DP8420AV-25 Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    DP8420AVX-20 National Semiconductor Memory Misc, microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Original PDF
    DP8420AVX-25 National Semiconductor Memory Misc, microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Original PDF
    DP8420V National Semiconductor microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Original PDF
    DP8420V-33 National Semiconductor microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Original PDF
    DP8420V-33 National Semiconductor microCMOS Programmable 256k/1M/4M Dynamic RAM Controller / Drivers Scan PDF

    DP8420 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    AN-615

    Abstract: C1995 DP8420A DP8422A F245 tcpb9 20R4D
    Text: National Semiconductor Application Note 615 Lawson H C Chang March 1989 INTRODUCTION This application note describes interfacing the DP8422A DRAM controller also applicable to DP8420A 21A to the 68000 (16 MHz) with slower memories This design is based upon burst mode access by holding RAS low and toggling


    Original     		PDF DP8422A DP8420A DP8422A 20R4D) ALS6311) 20-3A AN-615 C1995 F245 tcpb9 20R4D

    NS32532

    Abstract: 74F632 74F245 AN-540 C1995 DP8420A DP8422A PAL16R4D dRAM edac 74as244
    Text: I INTRODUCTION This appendix describes how to interface two NS32532 microprocessors both synchronous to the same system clock to a DP8422A DRAM controller and a 74F632 EDAC chip It is assumed that the reader is already familiar with NS32532 the DP8422A and the 74F632 modes of operation The National Semiconductor DP8420A can be used in place of the


    Original     		PDF NS32532 DP8422A 74F632 NS32532 DP8420A 74F245 AN-540 C1995 PAL16R4D dRAM edac 74as244

    timing diagram of 8086 maximum mode

    Abstract: 8086 minimum mode and maximum mode 8086 microprocessor APPLICATIONS timing diagram of 8086 minimum mode max and min mode 8086 8086 microprocessor max mode operation 8086 timing diagram 74AS04 8086 microprocessor introduction interfacing of memory devices with 8086
    Text: I INTRODUCTION This application note describes how to interface the 80186 microprocessor to the DP8422A DRAM controller also applicable to DP8420A 21A It is assumed that the reader is already familiar with 80186 and the DP8422A modes of operation This application note will also allow the 8086 88


    Original     		PDF DP8422A DP8420A 16-bit timing diagram of 8086 maximum mode 8086 minimum mode and maximum mode 8086 microprocessor APPLICATIONS timing diagram of 8086 minimum mode max and min mode 8086 8086 microprocessor max mode operation 8086 timing diagram 74AS04 8086 microprocessor introduction interfacing of memory devices with 8086

    9737

    Abstract: 74AS32 74AS373 AN-543 C1995 DP8420A DP8422A PAL16R6B
    Text: I INTRODUCTION This application note describes how to interface the National Semiconductor NS32332 microprocessor to the DP8422A DRAM controller also applicable to DP8420A 21A There are four designs shown in this application note The differences between these designs are as


    Original     		PDF NS32332 DP8422A DP8420A DP8422A 9737 74AS32 74AS373 AN-543 C1995 PAL16R6B

    schematic 80386

    Abstract: e174 ALS6311 80386 microprocessor PAL20R4D AN619 DP8421A C1995 DP8420A DP8422A
    Text: National Semiconductor Application Note 619 Lawson H C Chang February 1989 INTRODUCTION This application note describes how to interface the 80386 microprocessor to the DP8422A DRAM controller also applicable to DP8420A 21A with burst mode access The 80386 is running at 16 MHz 20 MHz or 25 MHz speed It is


    Original     		PDF DP8422A DP8420A 386PAL1 20-3A schematic 80386 e174 ALS6311 80386 microprocessor PAL20R4D AN619 DP8421A C1995

    74AS139

    Abstract: block diagram of 80386 microprocessor 82384 80386 microprocessor block diagram 80386 microprocessor features 80386 microprocessor 74as175 cpu 80386 80386 82384 clock
    Text: INTRODUCTION This application note describes how to interface the 80386 microprocessor to the DP8422A DRAM controller also applicable to DP8420A 21A The 80386 is interfaced with the DP8422A in both address pipelined (Design 1) and nonaddress pipelined (Design 2) mode up to 50 MHz (8038625) It is assumed that the reader is already familiar with


    Original     		PDF DP8422A DP8420A 74AS139 block diagram of 80386 microprocessor 82384 80386 microprocessor block diagram 80386 microprocessor features 80386 microprocessor 74as175 cpu 80386 80386 82384 clock

    DP8422-25

    Abstract: PAL16L8 programming specifications 74AS374 74F245 AN-602 C1995 DP8420A DP8422A PAL16L8D 74F245 national
    Text: INTRODUCTION This application note describes how to interface the 29000 microprocessor to the DP8422A DRAM controller also applicable to DP8420A 21A The DP8422A supports the 29000 in the burst access mode It is assumed that the reader is already familiar with 29000 access cycles and the


    Original     		PDF DP8422A DP8420A PAL16L8D) 20-3A DP8422-25 PAL16L8 programming specifications 74AS374 74F245 AN-602 C1995 PAL16L8D 74F245 national

    DP8420AV-20

    Abstract: DP820 DP8422AV-25 DP8421A C1995 DP8420A DP8420AV-25 DP8422A V68A 8420a
    Text: DP8420A 21A 22A microCMOS Programmable 256k 1M 4M Dynamic RAM Controller Drivers General Description Features The DP8420A 21A 22A dynamic RAM controllers provide a low cost single chip interface between dynamic RAM and all 8- 16- and 32-bit systems The DP8420A 21A 22A generate all the required access control signal timing for


    Original     		PDF DP8420A 32-bit DP8420AV-20 DP820 DP8422AV-25 DP8421A C1995 DP8420AV-25 DP8422A V68A 8420a

    DP8422V-33

    Abstract: No abstract text available
    Text: DP8420V-33,DP8421V-33,DP8422V-33, DP84T22-25 DP8420V-33 DP8421V-33 DP8422V-33 DP84T22-25 microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Literature Number: SNOS603A DP8420V 21V 22V-33 DP84T22-25 microCMOS Programmable 256k 1M 4M Dynamic RAM


    Original     		PDF DP8420V-33 DP8421V-33 DP8422V-33, DP84T22-25 DP8422V-33 DP84T22-25 256k/1M/4M SNOS603A

    DP8421AV-25

    Abstract: No abstract text available
    Text: DP8420A,DP8421A,DP8422A DP8420A DP8421A DP8422A microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers Literature Number: SNOSBX7A DP8420A 21A 22A microCMOS Programmable 256k 1M 4M Dynamic RAM Controller Drivers General Description Features The DP8420A 21A 22A dynamic RAM controllers provide a


    Original     		PDF DP8420A DP8421A DP8422A DP8422A 256k/1M/4M DP8421AV-25

    74as04

    Abstract: 74AS138 74as74 74as02 68450 TL E28 74AS245 AN-538 C1995 DP8420A
    Text: National Semiconductor Application Note 538 Joe Tate and Rusty Meier May 1989 INTRODUCTION This application note explains interfacing the DP8420A 21A 22A DRAM controller to the 68000 Three different designs are shown and explained It is assumed that the reader is familiar with the 68000 access cycles and


    Original     		PDF DP8420A 74AS138 74as04 74as74 74as02 68450 TL E28 74AS245 AN-538 C1995

    32C016

    Abstract: NS32008 inverter wait 74AS32 TL E28 74AS04 74AS373 C016 DP8420A AN5421
    Text: National Semiconductor Application Note 542 Joe Tate and Rusty Meier May 1989 INTRODUCTION This application note explains interfacing the DP8420A 21A 22A to the National Semiconductor 32C016 Two different designs are shown and explained It is assumed the reader is familiar with the NS32C016 access cycles and the DP8420A 21A 22A modes of operation This


    Original     		PDF DP8420A 32C016 NS32C016 NS32008 32C016 inverter wait 74AS32 TL E28 74AS04 74AS373 C016 AN5421

    Z80000

    Abstract: Z280 74ALS373 input port datasheet Z8000 74ALS373 AN-546 C1995 DP8420A DP8422A Z280 CPU
    Text: I INTRODUCTION This application note describes how to interface the Z280 microprocessor to the DP8422A DRAM controller also applicable to DP8420A 21A It is assumed that the reader is already familiar with Z280 and the DP8422A modes of operation The interface to the Z80000 and Z8000 is similar to


    Original     		PDF DP8422A DP8420A Z80000 Z8000 Z280 74ALS373 input port datasheet 74ALS373 AN-546 C1995 Z280 CPU

    F245

    Abstract: an6161 16L8D DP8422A an-6161 components combinational logic circuit AN61-61 AN-616 C1995 DP8420A
    Text: National Semiconductor Application Note 616 Lawson H C Chang March 1989 INTRODUCTION This application note describes interfacing the DP8422A DRAM controller also applicable to DP8420A 21A to the 68020 with slower memories This design is based upon burst mode access by holding RAS low and toggling CAS It


    Original     		PDF DP8422A DP8420A DP8422A 20-3A F245 an6161 16L8D an-6161 components combinational logic circuit AN61-61 AN-616 C1995

    74AS244

    Abstract: 100541 74AS32 AN-541 C1995 DP8420A DP8422A NS32532 PAL16R4D 32NS-2A
    Text: 1 0 INTRODUCTION This application note describes how to interface the National Semiconductor NS32532 microprocessor to the DP8422A DRAM controller also applicable to DP8420A 21A It is assumed that the reader is already familiar with NS32532 and the DP8422A modes of operation


    Original     		PDF NS32532 DP8422A DP8420A DP8422A 74AS244 100541 74AS32 AN-541 C1995 PAL16R4D 32NS-2A

    74AS00

    Abstract: 80286 80286 Microprocessor microprocessor 80286 80286 timing diagram 80286-12 80286-10 8422a 74AS08 74as175
    Text: National Semiconductor Application Note 545 Webster Rusty Meier Jr and Joe Tate November 1987 INTRODUCTION This application note describes how to interface the 80286 microprocessor to the DP8422A DRAM controller (also applicable to DP8420A 21A) There are three designs contained within this application note The designs differ in


    Original     		PDF DP8422A DP8420A 74AS00 80286 80286 Microprocessor microprocessor 80286 80286 timing diagram 80286-12 80286-10 8422a 74AS08 74as175

    DP8422

    Abstract: 74F74 AN-539 AN-617 C1995 DP8420A DP8422A
    Text: National Semiconductor Application Note 617 Chris Koehle July 1989 INTRODUCTION This application note explains interfacing the DP8422A DRAM controller to two 68020 microprocessors that are running at the same frequency but asynchronously to each other This application note is a supplement to AN-539 Interfacing the DP8420A 21A 22A to the 68020 and is intended to show synchronization logic and timing requirements for a Port B CPU that is running asynchronous to the


    Original     		PDF DP8422A AN-539 DP8420A DP8422A 20-3A DP8422 74F74 AN-539 AN-617 C1995

    68030

    Abstract: 74AS32 PAL16R4D 74F245 AN-537 C1995 DP8420A DP8422A 74AS138 DP8422
    Text: I INTRODUCTION This application note describes how to interface the 68030 microprocessor to the DP8422A DRAM controller also applicable to DP8420A 21A It is assumed that the reader is already familiar with 68030 and the DP8422A modes of operation II DESCRIPTION OF DESIGN ALLOWING UP TO 25 MHz


    Original     		PDF DP8422A DP8420A 68030 74AS32 PAL16R4D 74F245 AN-537 C1995 74AS138 DP8422

    ch 453d

    Abstract: C1995 DP8420V DP8421V DP8422V DP84T22 DP84T22-25
    Text: DP8420V 21V 22V-33 DP84T22-25 microCMOS Programmable 256k 1M 4M Dynamic RAM Controller Drivers General Description Features The DP8420V 21V 22V-33 DP84T22-25 dynamic RAM controllers provide a low cost single chip interface between dynamic RAM and all 8- 16- and 32-bit systems The


    Original     		PDF DP8420V 2V-33 DP84T22-25 32-bit ch 453d C1995 DP8421V DP8422V DP84T22

    DP8420V

    Abstract: DP8421V DP8422V DP84T22 DP84T22-25 TD3A
    Text: M ay 1992 DP8420V/21V/22V-33, DP84T22-25 microCMOS Programmable 256k/1M /4M Dynamic RAM Controller/Drivers General Description Features The D P 8 4 2 0 V /2 1 V /2 2 V -3 3 , DP84T22-25 dynam ic RAM contro lle rs provide a low cost, single chip interface betw een


    OCR Scan     		PDF DP8420V/21V/22V-33, DP84T22-25 256k/1M/4M 32-bit DP8420V DP8421V DP8422V DP84T22 TD3A

    P8420

    Abstract: DP84T22-25 RAY 33A AN77-3 TD422
    Text: i 9 1991 gH National ÆÆ Semiconductor PRELIMINARY May 1991 D P 8 4 2 0 V /2 1 V /2 2 V -3 3 , D P84T22-25 m icroCM O S Program m able 2 5 6 k /1 M /4 M Dynam ic RAM C o n tro lle r/D riv e rs General Description Features The DP8420V/21V/22V-33, DP84T22-25 dynamic RAM


    OCR Scan     		PDF DP8420V/21V/22V-33, DP84T22-25 256k/1M/4M P84T22-25 32-bit DP8420V P8420 RAY 33A AN77-3 TD422

    b649

    Abstract: dp84300
    Text: DP8428/NS32828, DP8429/NS32829 1 Megabit High Speed Dynamic RAM Controller/Drivers General Description Features The DP8420 and DP8429 1M DRAM Controller/Drivers are designed to provide “ No-Waitstate" CPU interface to Dy­ namic RAM arrays of up to 8 Mbytes and larger. The


    OCR Scan     		PDF DP8428/DP8429/NS32828/NS32829 DP8409A, DP8417, b649 dp84300

    Untitled

    Abstract: No abstract text available
    Text: a l Semiconductor May 1992 DP8420V/21V/22V-33, DP84T22-25 microCMOS Programmable 256k/1M /4M Dynamic RAM Controller/Drivers General Description Features The DP8420V/21V/22V-33, DP84T22-25 dynamic RAM controllers provide a low cost, single chip interface between


    OCR Scan     		PDF DP8420V/21V/22V-33, DP84T22-25 256k/1M 32-bit

    Untitled

    Abstract: No abstract text available
    Text: B bSGllSÔ 00 7244^ 4 National Semiconductor INSC4 PRELIMINARY May 1991 NATL SEMICOND UP/UC DP8420V/21V/22V-33, DP84T22-25 microCMOS Programmable 256k/1M /4M Dynamic RAM " T '-S Z -W Z . i Controller/Drivers General Description Features The DP8420V/21V/22V-33, DP84T22-25 dynamic RAM


    OCR Scan     		PDF DP8420V/21V/22V-33, DP84T22-25 256k/1M 32-bit 211-1181NS8R