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MELPS 4 - Mitsubishi

Mitsubishi MELPS 4
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Developer Mitsubishi
Manufacturer Mitsubishi
Type microcontrollers
Production 1978
ISA MELPS 4
Word size 4 bit
0.5 octets
1 nibbles
Technology pMOS, CMOS
Clock 100 kHz-600 kHz
Package DIP28, DIP40, DIP42, DIP64, QFP68

The MELPS 4 was a family of 4-bit microcontrollers developed by Mitsubishi and introduce in March of 1978. Originally designed using pMOS technology, a second chip MELPS 41 (and later MELPS 42) was designed using CMOS technology.

Members

Family Members
Part ROM RAM Frequency I/O
Ports
Package Notes
M58840 2048x9-bit 128x4-bit 300 kHz - 600 kHz 25 DIP42 incorporates a A/D converter
M58841 2048x9-bit 128x4-bit 300 kHz - 600 kHz 25 DIP42 Identical to M58840, except separate RESET (pin 20)
M58842S 128x4-bit 300 kHz - 600 kHz 25 DIP64 MELPS 4 System Evaluation Device (external ROM)
M58843 1024x9-bit 64x4-bit 300 kHz - 600 kHz 23 DIP28
M58844 1024x9-bit 64x4-bit 300 kHz - 600 kHz 36 DIP40 Same as M58843, more I/O
M58845 2048x9-bit 128x4-bit 300 kHz - 600 kHz 31 DIP42
M58846 2048x9-bit 128x4-bit 300 kHz - 600 kHz 31 DIP42
M58847 2048x9-bit 128x4-bit 240 kHz - 400 kHz 22 DIP40
M58494 4096x10-bit 32x4-bit 100 kHz - 455 kHz QFP68,
QFP72
"MELPS 41"
M58496 2048x10-bit 128x4-bit 250 kHz - 525 kHz 28 QFP72 "MELPS 42"
M58497 2048x10-bit 128x4-bit 120 kHz - 260 kHz 28 QFP72 "MELPS 42"

Others

Part Description
PCA0401 single-board system-evaluation computer for M58840

Software Support

No Language Name
GBIASOOO1 FORTRAN MELPS 4 Cross Assembler-MELCOM 70
GBIASOO02 FORTRAN MELPS 4 Cross Assembler-MELCOM 7000 or COSMO 700
GBISMOOO1 FORTRAN MELPS 4 Simulator-MELCOM 70
GBISPOOO1 FORTRAN MELPS 4 Paper-Tape Generation Program for PROM writer-MELCOM 70
GBISPOO02 FORTRAN MELPS 4 Paper-Tape Generation Program for PROM Writers-MELCOM 7000 and COSMO 700
GBIASOO03 FORTRAN MELPS 41 Cross Assembler-MELCOM 70
GBISMOO02 FORTRAN MELPS 41 Simulator-MELCOM 70
GBISPOO03 FORTRAN MELPS 41 Pape~-Tape Generation Program for PROM Writers-MELCOM 70

Design

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ISA

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Documents


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Facts about "MELPS 4 - Mitsubishi"
designerMitsubishi +
full page namemitsubishi/melps 4 +
instance ofmicrocontroller family +
instruction set architectureMELPS 4 +
main designerMitsubishi +
manufacturerMitsubishi +
nameMitsubishi MELPS 4 +
packageDIP28 +, DIP40 +, DIP42 +, DIP64 + and QFP68 +
technologypMOS + and CMOS +
word size4 bit (0.5 octets, 1 nibbles) +