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
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DP8422A
DP8420A
DP8422A
20R4D)
ALS6311)
20-3A
AN-615
C1995
F245
tcpb9
20R4D
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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
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DP8422A
DP8420A
386PAL1
20-3A
schematic 80386
e174
ALS6311
80386 microprocessor
PAL20R4D
AN619
DP8421A
C1995
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Stag ppz
Abstract: 20L8D PLQ20R4-5A PLQ20L8-5A 20L8
Text: Philips Components-Signetics PLQ20R8-5 Series D ocum en t N o. EC N N o. D ate o f Issue June 1990 S tatus Preliminary Specification PAL -type devices 20L8, 20R8, 20R6, 20R4 Programmable Logic Devices FEATURES DESCRIPTION • Ultra high-speed The Signetics P LQ 20XX family consists
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PLQ20R8-5
24-pin
28-Pin
1B/27
ZL30/30A
30A31
20L8-7/20L8D
20R8-7/20R8D
20R6-7/20R6D
Stag ppz
20L8D
PLQ20R4-5A
PLQ20L8-5A
20L8
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20L8D
Abstract: amaze 20L8
Text: Philips Components-Signetics D o c u m e n t N o . 8 5 3 -1 3 5 9 ECN No. 99 7 9 1 D a te o f Is s u e J u n e 14, 1 9 9 0 S ta tu s P rod uct S p ecification PLUS20R8D/-7 Series PAL -type devices 20L8, 20R8, 20R6, 20R4 P ro g ra m m a b le Log ic D e vic es
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PLUS20R8D/-7
PLUS20L8
PLUS20R8
PLUS20R6
PLUS20R4
20L8D
amaze
20L8
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