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UPD75108A - 4-BIT SINGLE-CHIP MICROCOMPUTER

General Description

that of an 8-bit microcomputer.

Operating at high speeds, the microcomputer allows data to be manipulated in units of 1, 4, or 8 bits.

Key Features

  • Internal memory.
  • Program memory (ROM) : 8064 × 8 bits (µ PD75108A) : 4096 × 8 bits (µ PD75104A).
  • Data memory (RAM) : 512 × 4 bits ( µPD75108A) : 320 × 4 bits ( µPD75104A).
  • Architecture “75X” rivaling 8-bit microcomputers.
  • 43 systematically organized instructions.
  • A wealth of bit manipulation instructions.
  • 8-bit data transfer, compare, operation, increment, and decrement instructions.
  • 1-byte relative branch instructions.

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Full PDF Text Transcription for UPD75108A (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for UPD75108A. For precise diagrams, and layout, please refer to the original PDF.

DATA SHEET MOS INTEGRATED CIRCUIT µPD75104A, 75108A 4-BIT SINGLE-CHIP MICROCOMPUTER DESCRIPTION µPD75108A is a 4-bit single-chip CMOS microcomputer having a data processi...

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5108A is a 4-bit single-chip CMOS microcomputer having a data processing capability comparable to that of an 8-bit microcomputer. Operating at high speeds, the microcomputer allows data to be manipulated in units of 1, 4, or 8 bits. In addition, various bit manipulation instructions are provided to reinforce I/O manipulation capability. Equipped with I/Os for interfacing with peripheral circuits operating on a different supply voltage, outputs that can directly drive LEDs, and analog inputs, µPD75108A is suitable for controlling such small equipments as cameras and VCRs. Detailed functions are described in the following us

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