UPD7554AA Ver la hoja de datos (PDF) - NEC => Renesas Technology

Número de pieza

componentes Descripción

Fabricante

UPD7554AA

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD7554A, 7554A(A)

8. µPD7554A APPLIED CIRCUITS

(1) Tape counter (VTR, deck)

Mechanical

Control

Microcomputer

PCL

SCK

SO

SI

µPD75008

µPD75108

etc.

Tape Counter

Microcomputer

RESET

CL1

P00/INT0

SCK

µ PD7554A

SI

P113

SO

P80

P81 P82 P83 P100 ~ P112

Driver µPA80C

Count Pulse

UP/DOWN Signal

7-Segment LED

(2) Remote control reception + key entry + LED display

Master

Microcomputer

PCL

SCK

SO

SI

µ PD75008

µ PD75108

etc.

µPD7554A

PCL P110

SCK P111

SO P112

SI (Chip

Selector

P113 Transfer

Request)

RESET

LED

12

Driver µPA80C

Remote

Control

Signal

Amplifier

Circuit

P00

µPC2800AHA(MS) etc.

P80

P81

P82

P83

P100

P101

P102

P103

Key Input 4 × 4

51

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