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The VL65C22V-02PC is a CMOS Versatile Interface Adapter (VIA) manufactured by VLSI Technology Inc. Below are its key specifications, descriptions, and features:

Manufacturer:

• VLSI Technology Inc.

Description:

• The VL65C22V-02PC is a 65C22 CMOS Versatile Interface Adapter (VIA).
• It is a peripheral interface chip designed for use with 8-bit microprocessors, providing parallel I/O, timers, and interrupt capabilities.
• It is compatible with the Rockwell/WDC 65C22 and MOS Technology 6522 VIA.

Features:

• CMOS Technology – Low power consumption.
• Operating Voltage: 5V (±10%).
• Clock Speed: Up to 2 MHz (VL65C22V-02PC variant).
• Parallel I/O Ports:
• Two 8-bit bidirectional ports (Port A & Port B).
• Programmable data direction registers.
• Timers:
• Two 16-bit programmable interval timers (Timer 1 & Timer 2).
• Timer 1 can operate in free-running or one-shot mode.
• Timer 2 can be used as a pulse counter or event timer.
• Shift Register:
• 8-bit serial shift register with external clocking.
• Interrupt Control:
• Programmable interrupt flags and masks.
• Supports IRQ (Interrupt Request) output.
• Handshake Control:
• Built-in handshake signals (CA1, CA2, CB1, CB2) for peripheral interfacing.
• Package:
• 40-pin DIP (Dual In-line Package).

Applications:

• Embedded systems.
• Peripheral interfacing for 8-bit microprocessors (e.g., 6502, 65C02).
• Industrial control systems.
• Retro computing and hobbyist projects.

This information is based on the manufacturer's datasheet and technical documentation. For detailed electrical characteristics and timing diagrams, refer to the official VLSI VL65C22V-02PC datasheet.