The Intel P8742AH is an 8-bit single-chip microcomputer. It is part of the MCS-48 family and is designed for a wide range of control applications. It integrates a CPU, RAM, ROM/EPROM, I/O ports, and a timer/counter on a single chip.

Applications

• Keyboard controllers
• Appliance control (e.g., washing machines, microwave ovens)
• Industrial control systems
• Remote control systems
• Simple embedded systems

Features

• 8-bit CPU
• 128 bytes of RAM
• 2048 bytes of EPROM (Erasable Programmable Read-Only Memory)
• 27 I/O lines
• 8-bit timer/counter
• Single-level interrupt
• On-chip oscillator

Benefits

• Provides a compact and cost-effective solution for control applications.
• On-chip EPROM allows for easy program updates and modifications.
• Versatile I/O ports enable interfacing with a variety of external devices.
• Timer/counter provides precise timing and counting capabilities.
• Simplified system design due to integrated functionality.
• Reduced component count leads to lower system cost and increased reliability.

Additional Details

The P8742AH operates on a 5V power supply. It is available in a 40-pin DIP (Dual In-line Package). Programming the EPROM requires a dedicated EPROM programmer. Refer to the Intel datasheet for complete electrical characteristics and programming specifications. The EPROM version allows for in-circuit reprogramming, making it suitable for prototyping and small production runs.