COP8SAC740N8

Overview

The COP8SAC740N8 is an 8-bit CMOS microcontroller from the COP8SA family, featuring 4k bytes of One-Time Programmable (OTP) EPROM and 128 bytes of RAM. It utilizes a modified Harvard architecture with a 1 µs instruction cycle time at 10 MHz CKI. The device operates within a supply voltage range of 2.7V to 5.5V and supports an industrial temperature range of -40°C to +85°C. It is housed in a 40-pin DIP package and includes features such as low EMI design, Multi-Input Wakeup logic, and a 16-bit timer/counter.

Feature Summary

• Low electromagnetic interference (EMI) design utilizing patented circuitry for reduced radiated emissions.
• Integrated Multi-Input Wakeup logic allowing multiple pins to trigger interrupts or wake the device from power-saving modes.
• Modified Harvard architecture enabling direct access to data tables stored in program memory.
• High current output capability on specific ports suitable for driving LEDs or small loads without external components.

Applications

• Low-cost embedded control systems requiring robust EMI performance
• Battery-powered devices utilizing HALT and IDLE power-saving modes
• Industrial controllers needing reliable operation across wide temperature ranges

Procurement Notes

Verify the specific ordering suffix 'N8' corresponds to the 40-pin DIP package and the -40°C to +85°C temperature grade as listed in the official National Semiconductor/Texas Instruments COP8SA Family datasheet. Confirm that OTP programming requirements are met prior to deployment, as the memory is not erasable once programmed.

Selection Notes

Select this component when a cost-effective 8-bit solution with integrated OTP memory and low EMI characteristics is required. Ensure the application benefits from the modified Harvard architecture for efficient data table handling. Verify that the 40-pin DIP form factor fits the mechanical constraints and that the 2.7V to 5.5V operating voltage aligns with the system power supply.

Part Context

This part belongs to the COP8SA family of 8-bit CMOS microcontrollers, which are supersets of the earlier COP800 family. The family offers various memory configurations ranging from 1k to 4k bytes and supports multiple package types including CSP, SOIC, and DIP. The COP8SAC7 variant specifically provides 4k OTP EPROM, positioning it for applications requiring moderate code storage with production flexibility.

Replacement Considerations

COP8SAx devices are pin-compatible replacements for COP800 family devices in new designs. No direct public substitute part numbers are confirmed in the provided documentation.