COP8SAC720Q3

Overview

The COP8SAC720Q3 is an 8-bit CMOS EPROM-based microcontroller from the COP8SA family, manufactured by Texas Instruments. It features 4k bytes of EPROM program memory and 128 bytes of RAM. The device utilizes a 20-pin DIP package and operates within a room temperature range only. Key architectural features include an 8-bit memory-mapped architecture with a 1 µs instruction cycle time at 10 MHz CKI. It integrates a 16-bit timer/counter with PWM output, MICROWIRE/PLUS serial I/O, and Multi-Input Wakeup logic. The design supports low EMI through gradual turn-on drivers and includes user-selectable Power-On Reset and Watchdog options.

Feature Summary

• Low electromagnetic interference (EMI) design utilizing patented circuitry for reduced radiated emissions.
• Versatile instruction set optimized for code efficiency with single-byte, single-cycle execution capabilities.
• Flexible I/O configuration allowing software selection of TRI-STATE, push-pull, or weak pull-up modes.
• Integrated peripherals including a 16-bit timer with PWM generation and MICROWIRE/PLUS serial interface.

Applications

• Low-cost embedded control systems requiring minimal external components
• Battery-operated devices utilizing low current drain and power-saving HALT/IDLE modes
• Applications necessitating quiet operation due to strict EMI constraints
• Industrial controllers using MICROWIRE/PLUS communication protocols

Procurement Notes

Verify the specific ordering suffix Q3 confirms the 20-pin DIP package and room temperature operational range as documented in the official datasheet. Confirm that the EPROM variant meets the required erasable window specifications if field reprogramming is necessary. Ensure compatibility with existing COP8 development tools for programming and debugging. Check for end-of-life status and availability of alternative packages such as PLCC or SOIC if form factor changes are permissible.

Selection Notes

Select this component when a cost-effective 8-bit solution with EPROM flexibility is required for room temperature environments. The COP8SAC720Q3 is suitable for designs needing up to 24 I/O pins in a compact 20-pin footprint. Consider this part for applications where low EMI is critical and high current output drive capability reduces the need for external buffer components. Evaluate the 4k memory size against application code requirements to ensure sufficient space for complex logic and data tables.

Part Context

The COP8SAC720Q3 belongs to the COP8SA family, which serves as a pin-compatible superset to the older COP800 family. This family emphasizes integration and low cost, offering ROM and OTP variants across various package types. The COP8SA series introduces enhanced EMI reduction features compared to previous generations while maintaining the established instruction set architecture familiar to COP8 designers.

Replacement Considerations

COP8SAC720N9 is a verified substitute offering identical electrical and functional specifications but rated for an extended temperature range of -40°C to +85°C. Both parts share the same 20-pin DIP package and memory configuration. Designers should verify thermal management requirements before substituting between these variants.