About: Electronic Arrays 9002

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The Electronic Arrays 9002, or EA9002, was an 8-bit microprocessor released in 1976. It was designed to be easy to implement in systems with few required support chips. It included 64 bytes of built-in RAM and could be directly connected to TTL devices. It was packaged in a 28-pin DIP which made it less expensive to implement than contemporary designs like the 40-pin MOS 6502 and Zilog Z80. Today it would be known as a microcontroller, although that term did not exist at the time.

Attributes	Values
rdfs:label	Electronic Arrays 9002 (en)
rdfs:comment	The Electronic Arrays 9002, or EA9002, was an 8-bit microprocessor released in 1976. It was designed to be easy to implement in systems with few required support chips. It included 64 bytes of built-in RAM and could be directly connected to TTL devices. It was packaged in a 28-pin DIP which made it less expensive to implement than contemporary designs like the 40-pin MOS 6502 and Zilog Z80. Today it would be known as a microcontroller, although that term did not exist at the time. (en)
name	Electronic Arrays 9002 (en)
foaf:depiction
dcterms:subject	Computer-related introductions in 1976 8-bit microprocessors
Wikipage page ID	57663349 (xsd:integer)
Wikipage revision ID	1096360495 (xsd:integer)
Link from a Wikipage to another Wikipage	Electronic Arrays Microcomputer Read-only memory Binary coded decimal Depletion-load NMOS logic Intel 4040 Monterey, California Most significant bit Mostek NEC Transistor-transistor logic Arithmetic logic unit MOS Technology Macro assembler Call stack Function (computer programming) Computer program Zilog Z80 Address space Dual in-line package 8-bit Adam Osborne Computer-related introductions in 1976 Flip-flop (electronics) Fairchild F8 Microcontroller Power supply Texas Instruments 8-bit microprocessors FORTRAN IV IBM System/360 Cash register Random-access memory Single-board computer Transistor–transistor logic National CSS MOS 6502 Electronic calculator Dynamic RAM Static RAM Circuit board RCA COSMAC Main memory dbr:Design_win dbr:Intel_8212 dbr:Rockwell_PPS-8
Link from a Wikipage to an external page	http://www.swtpc.com/mholley/Microprocessors/EDN_Sep_20_1975_6502.pdf https://amigan.yatho.com/AnIntroductionToMicroprocessorsVol2.pdf https://web.archive.org/web/20160424050556/http:/www.swtpc.com/mholley/Microprocessors/EDN_Sep_20_1975_6502.pdf http://www.bitsavers.org/components/eeTimes/EE_Times_Integrated_Circuit_Applications_1976.pdf
sameAs	Electronic Arrays 9002 Electronic Arrays 9002
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thumbnail	wiki-commons:Special:FilePath/Electronic_Arrays_9002.png?width=300
arch	Electronic Arrays 9002 (en)
manuf	Electronic Arrays
pack	28 (xsd:integer)
slow-unit	MHz (en)
slowest	4 (xsd:integer)
has abstract	The Electronic Arrays 9002, or EA9002, was an 8-bit microprocessor released in 1976. It was designed to be easy to implement in systems with few required support chips. It included 64 bytes of built-in RAM and could be directly connected to TTL devices. It was packaged in a 28-pin DIP which made it less expensive to implement than contemporary designs like the 40-pin MOS 6502 and Zilog Z80. Today it would be known as a microcontroller, although that term did not exist at the time. The 28-pin design did not have enough pins left over to implement a 16-bit address bus, and instead had 12 address lines which limited main memory to 4,096 bytes. This was not a significant limitation at the time, as memory was still very expensive and the target market could often make do with the internal RAM. There was a single 8-bit accumulator used for arithmetic and eight 8-bit registers it could use for storing temporary values. These were supported by another eight 4-bit registers which acted as the most significant bits of the 8-bit registers, extending them to 12-bits for indexing and similar address manipulation. Electronic Arrays (EA) had problems with the new depletion-load NMOS logic fabrication line and struggled with deliveries. By 1977, the 6502 and Z80 had taken over much of the market, and in November EA stopped selling the design. The company was sold to NEC the next year. (en)
address-width	12 (xsd:integer)
data-width	8 (xsd:integer)
instructions	55 (xsd:integer)
prov:wasDerivedFrom	wikipedia-en:Electronic_Arrays_9002?oldid=1096360495&ns=0
page length (characters) of wiki page	16739 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Electronic_Arrays_9002
is Link from a Wikipage to another Wikipage of	Electronic Arrays List of microprocessors 12-bit computing EA9002
is Wikipage redirect of	EA9002
is foaf:primaryTopic of	wikipedia-en:Electronic_Arrays_9002

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