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UPD554 Dataheets PDF



Part Number UPD554
Manufacturers NEC
Logo NEC
Description 4-BIT SINGLE CHIP MICROCOMPUTER
Datasheet UPD554 DatasheetUPD554 Datasheet (PDF)

NEe Microcomputers, Inc. 4-81T SINGLE CHIP MICROCOMPUTER NEe Jl-PD554 DESCRIPTION The J,lP0554 is the standard J,lCOM-45 4·bit single chip microcomputer. with high voltage outputs that can be'pulled to -35V for direct interfacing to vacuum fluorescent displays. The J,lP0554 is manufactured with a standard PMOS process. allowing use of a single -1 OV power supply. The J,lP0554 provides all of the hardware features of the J,lCOM-45 family. and executes all 58 instructions of the J,lCOM-45 instr.

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NEe Microcomputers, Inc. 4-81T SINGLE CHIP MICROCOMPUTER NEe Jl-PD554 DESCRIPTION The J,lP0554 is the standard J,lCOM-45 4·bit single chip microcomputer. with high voltage outputs that can be'pulled to -35V for direct interfacing to vacuum fluorescent displays. The J,lP0554 is manufactured with a standard PMOS process. allowing use of a single -1 OV power supply. The J,lP0554 provides all of the hardware features of the J,lCOM-45 family. and executes all 58 instructions of the J,lCOM-45 instruction set. PIN CONFIGURATION Cll PCo PC, PC2 PCa POo PO, P02 POa PEO PEl PE2 PE3 VSS Clo VGG RESET iNT PAa PA2 PAl PAo PGO PF3 PF2 PF, PFo TEST PAo-PAa PCo,PC3 POO-P03 PEo·PEa PFo·PFa PGO INT ClO·Cll RESET VGG VSS TEST PIN NAMES Input Port A Input/Output Port C Input/Output Port 0 Output Port E Output Port F Output Port G Interrupt Input External Clock Signals Reset Power Suppl y Negative Power Supply Positi ve Factory Test Pi n (Connect to V55) II ABSOLUTE MAXIMUM RAT INGS* Operati.


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