The Z84C2004PSC is a Z80 PIO (Parallel Input/Output) device manufactured by Zilog. It's a general-purpose I/O interface chip designed to work with Z80 microprocessors. The PIO provides parallel ports that can be individually configured for input or output, enabling communication with various peripheral devices.

Applications

• Interface for printers and scanners
• Control interface for industrial machinery
• Data acquisition systems
• Keyboard and display interfaces
• General-purpose I/O in embedded systems
• Legacy computer systems using the Z80 processor

Features

• Two 8-bit parallel ports (Port A and Port B)
• Individual port configuration for input or output
• Interrupt handling capabilities
• Handshake signals for asynchronous data transfer
• TTL compatible inputs and outputs
• Low power consumption

Benefits

• Flexible I/O interface for Z80-based systems
• Simplified interfacing with a wide range of peripheral devices
• Reduced component count compared to discrete logic implementations
• Efficient interrupt handling for real-time applications
• Compatibility with legacy Z80 hardware and software
• Cost-effective I/O solution

Additional Details

The Z84C2004PSC is typically supplied in a DIP (Dual In-line Package). It requires a single 5V power supply. The device is programmed through the Z80's memory-mapped I/O space. Each port can be configured with or without handshake signals. Interrupts can be generated by either port. Consult the Zilog datasheet for detailed pinout information, timing diagrams, and programming examples. The PIO provides a versatile I/O interface for Z80 applications. It's a vital component in many legacy systems and embedded designs.