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.
