COP8TAC9EMW8

Overview

The COP8TAC9EMW8 is an 8-bit CMOS Flash microcontroller from the COP8™ 8T family, manufactured by Texas Instruments. It features 4KB (4K x 8) of in-system reprogrammable Flash program memory and 128 bytes of volatile RAM. The device operates within a supply voltage range of 2.25V to 2.75V and supports clock frequencies up to 15MHz using an internal oscillator. It is housed in a 28-SOIC package with 24 I/O pins and functions across a temperature range of -40°C to +85°C.

Feature Summary

• In-system programmability via MICROWIRE/PLUS interface for Flash memory erasure and writing
• EMI reduction technology including low radiated emissions and gradual turn-on output drivers
• True in-system emulation capability allowing software debugging on final production boards
• Integrated ACCESS.Bus synchronous serial interface compatible with I2C and SMBus standards

Applications

• Embedded control systems requiring low electromagnetic interference
• Applications needing in-system reprogrammability without external programming hardware
• Development and pre-production phases utilizing standard COP8 development tools
• Volume production environments transitioning from Flash prototypes to Masked ROM devices

Procurement Notes

Verify component authenticity through authorized distributors as this part may be subject to obsolescence. Confirm that the specific suffix EMW8 corresponds to the 28-SOIC wide package variant. Ensure design compatibility with the 2.25V–2.75V operating voltage range. Check for RoHS compliance status as older batches may not meet current environmental regulations. Validate that code does not invoke Boot ROM functions if targeting future ROM-based production.

Selection Notes

Select this model when 4KB of Flash memory is required for applications needing frequent code updates. Choose the COP8TAC9EMW8 over the COP8TAB9 variant if larger program storage is necessary. Consider the 28-SOIC package for surface mount assembly requirements. Ensure the system design accommodates the specific 2.25V to 2.75V power supply constraints. Verify that the 15MHz maximum clock speed meets the processing performance needs.

Part Context

This component belongs to the COP8TAx9 series of 8-bit microcontrollers designed for moderate memory applications with advanced integration. It shares architectural similarities with the COP8TAx5 Masked ROM devices but includes additional Boot ROM and Flash capabilities. The COP8 family utilizes a modified Harvard architecture for efficient data table access. Development tools support both Flash and ROM variants to facilitate product lifecycle management.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.