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'''NEC Corporation''' [[Japanese]] multinational semiconductor and electronics company.
 
'''NEC Corporation''' [[Japanese]] multinational semiconductor and electronics company.
 +
 +
== Microprocessors ==
 +
* {{\\|SX}} (vector processors)
 +
:• [[nec/microarchitectures/sx-aurora|SX-Aurora]] (microarch)
 +
 +
=== Families ===
 +
* {{\\|Vector Engine}}
 +
:• [[nec/vector engine/type 10a|Type 10A]]
 +
:• [[nec/vector engine/type 10ae|Type 10AE]]
 +
:• [[nec/vector engine/type 10b|Type 10B]]
 +
:• [[nec/vector engine/type 10be|Type 10BE]]
 +
:• [[nec/vector engine/type 10c|Type 10C]]
 +
:• [[nec/vector engine/type 10ce|Type 10CE]]
  
 
== Microcontrollers ==
 
== Microcontrollers ==
−
* {{\\|μPD707}}
+
* {{\\|μPD707}}/μPD708 ([[1971]])
−
* {{\\|μPD751}} (first Japanese single-chip microprocessor)
+
* {{\\|μPD751}} ([[1973]])
 +
 
 
* {{\\|μCOM-4|μCOM-4 extended family}}
 
* {{\\|μCOM-4|μCOM-4 extended family}}
−
** {{\\|μCOM-42|μCOM-42 family}}
+
:• [[nec/μcom-4/isa|μCOM-4 ISA]]
−
** {{\\|μCOM-43|μCOM-43 family}}
+
* {{\\|μCOM-42|μCOM-42 family}}
−
** {{\\|μCOM-44|μCOM-44 family}}
+
:• [[nec/μcom-42/μpd548|μPD548]]
−
** {{\\|μCOM-45|μCOM-45 family}}
+
:• [[nec/μcom-42/μpd555|μPD555]]
−
** {{\\|μCOM-46|μCOM-46 family}}
+
* {{\\|μCOM-43|μCOM-43 family}}
−
{{expand list}}
+
:• [[nec/μcom-43/μpd546|μPD546]]
 +
:• [[nec/μcom-43/μpd553|μPD553]]
 +
:• [[nec/μcom-43/μpd556|μPD556]](B)
 +
:• [[nec/μcom-43/μpd557l|μPD557L]]
 +
:• [[nec/μcom-43/μpd650|μPD650]]
 +
* {{\\|μCOM-44|μCOM-44 family}}
 +
:• [[nec/μcom-44/μpd547|μPD547]]
 +
:• [[nec/μcom-44/μpd547l|μPD547L]]
 +
:• [[nec/μcom-44/μpd552|μPD552]]
 +
:• [[nec/μcom-44/μpd651|μPD651]]
 +
* {{\\|μCOM-45|μCOM-45 family}}
 +
:• [[nec/μcom-45/μpd550|μPD550]]
 +
:• [[nec/μcom-45/μpd550l|μPD550L]]
 +
:• [[nec/μcom-45/μpd554|μPD554]]
 +
:• [[nec/μcom-45/μpd554l|μPD554L]]
 +
:• [[nec/μcom-45/μpd652|μPD652]]
 +
* {{\\|μCOM-46|μCOM-46 family}}
 +
 
 +
=== Tables ===
 +
<table class="wikitable sortable">
 +
<tr><th colspan="9" style="background:#D6D6FF;">NEC Microcontrollers</th></tr>
 +
<tr><th>Model</th><th>Family</th><th>Introduction</th><th>ROM</th><th>RAM</th><th>Pins</th></tr>
 +
{{#ask: [[Category:microcontroller models by nec]] [[microcontroller family::~*]]
 +
|?full page name
 +
|?part number
 +
|?model number
 +
|?first launched
 +
|?rom breakdown
 +
|?ram breakdown
 +
|?pin count
 +
|format=template
 +
|template=proc table 1
 +
|userparam=7
 +
|mainlabel=-
 +
}}
 +
</table>
 +
<!--
 +
nec/μcom-4
 +
:• nec/μcom-4/isa
 +
nec/μcom-42
 +
:• nec/μcom-42/μPD548
 +
:• nec/μcom-42/μpd548
 +
:• nec/μcom-42/μpd555
 +
nec/μcom-43
 +
:• nec/μcom-43/μpd546
 +
:• nec/μcom-43/μpd553
 +
:• nec/μcom-43/μpd556
 +
:• nec/μcom-43/μpd557l
 +
:• nec/μcom-43/μpd650
 +
nec/μcom-44
 +
:• nec/μcom-44/μpd547
 +
:• nec/μcom-44/μpd547l
 +
:• nec/μcom-44/μpd552
 +
:• nec/μcom-44/μpd651
 +
nec/μcom-45
 +
:• nec/μcom-45/μpd550
 +
:• nec/μcom-45/μpd550l
 +
:• nec/μcom-45/μpd554
 +
:• nec/μcom-45/μpd554l
 +
:• nec/μcom-45/μpd652
 +
 
 +
nec/μpd546
 +
nec/μpd547
 +
nec/μpd547l
 +
nec/μpd548
 +
nec/μpd550
 +
nec/μpd554
 +
nec/μpd556
 +
nec/μpd650
 +
nec/μpd652
 +
nec/μpd707
 +
nec/μpd708
 +
nec/μpd751
 +
 
 +
:• nec/vector engine -->
 +
 
 +
== Calculators Chipsets ==
 +
:;• [http://www.datamath.org/NEC_IC.htm NEC IC]
 +
*µPD261 (1972) • 8-Segment Decoder (DIP20)
 +
:(with Serial input and VF-Display driver outputs)
 +
*µPD262 (1973) • 12 digit, Timing Controller (DIP20)
 +
*µPD264 (1973) • 12 digit, External Memory Register (DIP20)
 +
 
 +
*'''µPD271''' (1972) • 8 digits, [[10 µm]] PMOS (DIP28)
 +
*'''µPD272''' (1973) • Low-voltage version of µPD271 (DIP28)
 +
*µPD273 (1973) • 8 digits, single-chip (DIP28)
 +
*µPD274 (1974) • 8 digits, single-chip (DIP28)
 +
*µPD275 (1974) • 8 digits, single-chip (DIP28)
 +
*µPD276 (1974) • 8 digits, single-chip (DIP28)
 +
*µPD277 (1973) • 8 digits, single-chip (DIP28)
 +
*µPD278 (1975) • 8 digits, single-chip, Enhanced (DIP28)
 +
 
 +
*µPD280 (1973) • Program ROM (DIP24)
 +
*µPD281 (1973) • 12 digit, Program ROM (DIP24)
 +
*µPD282 (1973) • 12 digit, Arithmetic Logic Unit, Data Registers (DIP28)
 +
*µPD283 (1973) • 12 digit, Program ROM (DIP24)
 +
 
 +
*µPD940 (1974) • 8 digits, single-chip (DIP28)
 +
*µPD941 (1974) • 8 digits, single-chip (DIP28)
 +
*µPD942 (1974) • 8 digits, single-chip (DIP28)
 +
*µPD943 (1974) • 8 digits, single-chip (DIP28)
 +
*µPD946 (1975) • 8 digits, single-chip, Enhanced (DIP28)
 +
*µPD947 (1975) • 8 digits, single-chip, Enhanced (DIP28)
 +
 
 +
== Part Numbering System ==
 +
[[NEC]] introduced already with their first Integrated Circuits (ICs) a well-organized numbering scheme for their products.
 +
:The leading '''µ''' is a registered trademark used with ICs and the following two letters define the Family Type:
 +
 
 +
* '''µPA''' - Array Element
 +
* '''µPB''' - Bipolar, Digital IC
 +
* '''µPC''' - Bipolar, Linear IC
 +
* '''µPD''' - MOS Digital IC
 +
 
 +
The Family Type is followed by the Product Number, in many cases a sequential number:
 +
* '''nnn''' - Product Identification Number. Usually numerals, but may include letters
  
−
== Microprocessors ==
+
Additional fields are reserved for Revision (one character, starting with A) and Functional Classification (one character).
−
* {{\\|SX}} [[vector processors]]
+
 
−
{{expand list}}
+
The next field is used for the Package Type (one or two characters):
 +
* A - Metal Can or Metallic
 +
* B - Ceramic
 +
* C - Plastic DIP
 +
* D - Ceramic DIP
 +
* Fx - BGA, LGAM
 +
* Gx - QFP, SOP, TSOP, SSOP
 +
* Hx - SIP
 +
* Mx - Part of SSOP
 +
* Nx - BGA
 +
* Sx - BGA, PGA
 +
 
 +
Additional fields are used for Quality Grade, Custom Codes, Speed Classification, etc.
 +
 
 +
Note: Some products may have characters such as /JM suffixed to their part numbers. These characters indicate where the product was manufactured.
 +
:The first character after the slash indicates the country where the manufacturer of the IC diffusion processing is located, and the second character
 +
:indicates the country where the product was assembled. In the case of /JM, the J stands for Japan, and the M for Malaysia.
 +
 
 +
A typical single-chip calculator circuit from NEC manufactured in 1975 might read [[NEC]] '''µPD940C''' H5728M:
 +
* MOS Digital IC, 940, Plastic DIP
 +
* H5728M is a production lot/date code, we assume that 5 represents the year 1975 and 7 the month July
 +
: Note: 1 January, …, 9 September, X October, Y November and Z December
 +
 
 +
== LSI/MOS Process Timeline ==
 +
* [[1971]] - [[10 µm]] metal gate [[PMOS]], enhancement mode transistors for gates and loads
 +
* [[1974]] - [[7.5 µm]] metal gate PMOS, enhancement mode transistors for gates and loads
 +
* [[1975]] - [[7.5 µm]] metal gate PMOS, enhancement mode transistors for gates, depletion mode transistors for loads
 +
* [[1976]] - [[5 µm]] metal gate PMOS, enhancement mode transistors for gates, depletion mode transistors for loads
 +
* [[1974]] - [[7.5 µm]] silicon gate [[NMOS]], enhancement mode transistors for gates and loads
 +
* [[1975]] - [[7.5 µm]] silicon gate NMOS, enhancement mode transistors for gates, depletion mode transistors for loads
 +
* [[1975]] - [[5 µm]] silicon gate NMOS, enhancement mode transistors for gates, depletion mode transistors for loads
 +
* [[1978]] - [[4 µm]] silicon gate NMOS, enhancement mode transistors for gates, depletion mode transistors for loads
 +
* [[1975]] - [[7.5 µm]] metal gate [[CMOS]]
 +
* [[1976]] - [[5 µm]] silicon gate [[CMOS]]
 +
* [[1978]] - [[4 µm]] silicon gate [[CMOS]]
 +
* [[1980]] - [[3 µm]] silicon gate [[CMOS]]
  
−
== Families ==
+
[[Category:nec]]
−
* {{\\|Vector Engine}}
 

Latest revision as of 09:31, 15 November 2025

NEC
NEC logo.svg
Type Public
Founded July 17, 1899
Tokyo, Japan
Headquarters Tokyo, Japan
Website https://www.nec.com/

NEC Corporation Japanese multinational semiconductor and electronics company.

Microprocessors[edit]

  • SX (vector processors)
• SX-Aurora (microarch)

Families[edit]

• Type 10A
• Type 10AE
• Type 10B
• Type 10BE
• Type 10C
• Type 10CE

Microcontrollers[edit]

• μCOM-4 ISA
• μPD548
• μPD555
• μPD546
• μPD553
• μPD556(B)
• μPD557L
• μPD650
• μPD547
• μPD547L
• μPD552
• μPD651
• μPD550
• μPD550L
• μPD554
• μPD554L
• μPD652

Tables[edit]

NEC Microcontrollers
ModelFamilyIntroductionROMRAMPins
μPD546μCOM-4319772000x10 bit96x4 bit42
μPD547μCOM-4419771000x10 bit64x4 bit42
μPD547LμCOM-44L19781000x10 bit64x4 bit42
μPD548μCOM-4219771920x10 bit96x4 bit42
μPD550μCOM-451977640x8 bit32x4 bit28
μPD550LμCOM-45L1980640x8 bit32x4 bit28
μPD552μCOM-44H19781000x10 bit64x4 bit42
μPD553μCOM-43H19782000x8 bit96x4 bit42
μPD554μCOM-4519781000x8 bit32x4 bit28
μPD554LμCOM-45L19811000x8 bit32x4 bit28
μPD555μCOM-42 EVACHIP197796x4 bit64
μPD556 μPD556BEVACHIP-43197796x4 bit64
μPD557LμCOM-43SL19812000x8 bit96x4 bit28
μPD650μCOM-43C19782000x10 bit96x4 bit42
μPD651μCOM-44C19781000x10 bit64x4 bit42
μPD652μCOM-45C19781000x8 bit32x4 bit42

Calculators Chipsets[edit]

• NEC IC
  • µPD261 (1972) • 8-Segment Decoder (DIP20)
(with Serial input and VF-Display driver outputs)
  • µPD262 (1973) • 12 digit, Timing Controller (DIP20)
  • µPD264 (1973) • 12 digit, External Memory Register (DIP20)
  • µPD271 (1972) • 8 digits, 10 µm PMOS (DIP28)
  • µPD272 (1973) • Low-voltage version of µPD271 (DIP28)
  • µPD273 (1973) • 8 digits, single-chip (DIP28)
  • µPD274 (1974) • 8 digits, single-chip (DIP28)
  • µPD275 (1974) • 8 digits, single-chip (DIP28)
  • µPD276 (1974) • 8 digits, single-chip (DIP28)
  • µPD277 (1973) • 8 digits, single-chip (DIP28)
  • µPD278 (1975) • 8 digits, single-chip, Enhanced (DIP28)
  • µPD280 (1973) • Program ROM (DIP24)
  • µPD281 (1973) • 12 digit, Program ROM (DIP24)
  • µPD282 (1973) • 12 digit, Arithmetic Logic Unit, Data Registers (DIP28)
  • µPD283 (1973) • 12 digit, Program ROM (DIP24)
  • µPD940 (1974) • 8 digits, single-chip (DIP28)
  • µPD941 (1974) • 8 digits, single-chip (DIP28)
  • µPD942 (1974) • 8 digits, single-chip (DIP28)
  • µPD943 (1974) • 8 digits, single-chip (DIP28)
  • µPD946 (1975) • 8 digits, single-chip, Enhanced (DIP28)
  • µPD947 (1975) • 8 digits, single-chip, Enhanced (DIP28)

Part Numbering System[edit]

NEC introduced already with their first Integrated Circuits (ICs) a well-organized numbering scheme for their products.

The leading µ is a registered trademark used with ICs and the following two letters define the Family Type:
  • µPA - Array Element
  • µPB - Bipolar, Digital IC
  • µPC - Bipolar, Linear IC
  • µPD - MOS Digital IC

The Family Type is followed by the Product Number, in many cases a sequential number:

  • nnn - Product Identification Number. Usually numerals, but may include letters

Additional fields are reserved for Revision (one character, starting with A) and Functional Classification (one character).

The next field is used for the Package Type (one or two characters):

  • A - Metal Can or Metallic
  • B - Ceramic
  • C - Plastic DIP
  • D - Ceramic DIP
  • Fx - BGA, LGAM
  • Gx - QFP, SOP, TSOP, SSOP
  • Hx - SIP
  • Mx - Part of SSOP
  • Nx - BGA
  • Sx - BGA, PGA

Additional fields are used for Quality Grade, Custom Codes, Speed Classification, etc.

Note: Some products may have characters such as /JM suffixed to their part numbers. These characters indicate where the product was manufactured.

The first character after the slash indicates the country where the manufacturer of the IC diffusion processing is located, and the second character
indicates the country where the product was assembled. In the case of /JM, the J stands for Japan, and the M for Malaysia.

A typical single-chip calculator circuit from NEC manufactured in 1975 might read NEC µPD940C H5728M:

  • MOS Digital IC, 940, Plastic DIP
  • H5728M is a production lot/date code, we assume that 5 represents the year 1975 and 7 the month July
Note: 1 January, …, 9 September, X October, Y November and Z December

LSI/MOS Process Timeline[edit]

  • 1971 - 10 µm metal gate PMOS, enhancement mode transistors for gates and loads
  • 1974 - 7.5 µm metal gate PMOS, enhancement mode transistors for gates and loads
  • 1975 - 7.5 µm metal gate PMOS, enhancement mode transistors for gates, depletion mode transistors for loads
  • 1976 - 5 µm metal gate PMOS, enhancement mode transistors for gates, depletion mode transistors for loads
  • 1974 - 7.5 µm silicon gate NMOS, enhancement mode transistors for gates and loads
  • 1975 - 7.5 µm silicon gate NMOS, enhancement mode transistors for gates, depletion mode transistors for loads
  • 1975 - 5 µm silicon gate NMOS, enhancement mode transistors for gates, depletion mode transistors for loads
  • 1978 - 4 µm silicon gate NMOS, enhancement mode transistors for gates, depletion mode transistors for loads
  • 1975 - 7.5 µm metal gate CMOS
  • 1976 - 5 µm silicon gate CMOS
  • 1978 - 4 µm silicon gate CMOS
  • 1980 - 3 µm silicon gate CMOS
Retrieved from "https://en.wikichip.org/w/index.php?title=nec&oldid=103964"
Facts about "NEC Corporation"
RDF feed
company typepublic +
foundedJuly 17, 1899 +
founded locationTokyo, Japan +
full page namenec +
headquartersTokyo, Japan +
instance ofsemiconductor company +
nameNEC +
websitehttps://www.nec.com/ +
wikidata idQ219203 +