COP8SAA720M9

Overview

The COP8SAA720M9 is an 8-bit CMOS microcontroller from the COP8SA series, manufactured by National Semiconductor. It features a ROM-based architecture with 1k bytes of program memory and 64 bytes of RAM. The device operates on a 3V or 5V power supply and supports a maximum clock frequency of 10 MHz. It is housed in a 20-pin DIP package and is designed for low-cost embedded applications requiring efficient code execution and low electromagnetic interference.

Feature Summary

• High-speed instruction execution with a 1 µs cycle time at 10 MHz clock input
• Memory-mapped architecture allowing direct data access from program memory
• Integrated 16-bit timer/counter supporting PWM, external event counting, and input capture modes
• Low power consumption with HALT and IDLE operating modes

Applications

• Battery-powered consumer electronics
• Industrial control systems
• Smart home appliances

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature range compatibility. Ensure the design accounts for the 3V/5V dual voltage operation requirements. Confirm that the 20-pin DIP footprint matches the target PCB layout. Check for any end-of-life notices as this component may be legacy.

Selection Notes

Select this model when a cost-effective 8-bit solution with sufficient I/O for simple control tasks is required. The 1k ROM size limits complex application logic compared to larger variants. Consider the 20-pin constraint if more general-purpose inputs are needed. The COP8 core offers a balance of performance and simplicity for dedicated functions.

Part Context

This part belongs to the COP8SA family, which serves as a modern replacement for older COP800 series devices. The series emphasizes low EMI and high pin efficiency. It shares architectural similarities with other COP8SA models but differs in memory capacity and package options. The COP8 core provides a robust foundation for basic microcontroller applications.

Replacement Considerations

Direct substitutes within the COP8SA family include COP8SAA520N7XXX for similar functionality in different packages. Verify pinout compatibility before swapping. No cross-family replacements are officially confirmed without detailed electrical matching.