COP8CCR9LVA7/NOPB

Overview

The COP8CCR9LVA7/NOPB is an 8-bit CMOS Flash microcontroller from the COP8CCR9 family, featuring 32 kbytes of Flash program memory and 1 kbyte of volatile RAM. It integrates a 10-bit Analog-to-Digital Converter with up to 16 channels, two USART modules, and three timers. The device supports dual clock operation with a clock doubler for speeds up to 20 MHz and includes Virtual EEPROM functionality. It operates within a voltage range of 4.17V to 4.5V and offers in-system programmability via MICROWIRE/PLUS.

Feature Summary

• Integrated Virtual EEPROM capability using Flash program memory for nonvolatile data storage emulation.
• Dual clock system with high-speed and low-speed oscillators, including a clock doubler for enhanced performance.
• True in-system emulation support for software debugging on production boards.
• EMI reduction technology featuring gradual turn-on output drivers and internal current smoothing.

Applications

• Applications requiring low electromagnetic interference (EMI) emissions.
• Systems needing in-system reprogrammability and virtual EEPROM features.
• Embedded control designs utilizing analog signal processing via the integrated A/D converter.
• Industrial or consumer devices operating within specific 4.17V to 4.5V voltage constraints.

Procurement Notes

Verify the specific suffix 'LVA7' against official Texas Instruments documentation to confirm package type and temperature grade, as standard datasheets may list generic variants. Confirm availability status, as older COP8 families may have limited supply or end-of-life implications. Ensure compatibility with existing development tools and boot ROM configurations before procurement.

Selection Notes

Select this component when a modified Harvard architecture with code-efficient instruction sets is required. It is suitable for designs prioritizing EMI reduction and true in-system emulation capabilities. Consider the specific 4.17V to 4.5V operating voltage range and the presence of Brownout Reset features. Evaluate the need for multiple USARTs and high-speed timer functionalities alongside the 10-bit ADC resolution.

Part Context

This part belongs to the COP8CCR9 series, which shares architectural similarities with the COP8CBR9 and COP8CDR9. Key differentiators include the specific Brownout Reset voltage thresholds and supported temperature ranges. The COP8 family is characterized by its unique instruction set optimized for code density and execution speed, distinguishing it from conventional 8-bit microcontrollers.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Texas Instruments directly for legacy replacement options or updated equivalents within the embedded processor portfolio.

FAQ

What is the function of the Virtual EEPROM feature?

Virtual EEPROM allows the user to emulate variable amounts of EEPROM by initializing nonvolatile variables from Flash Memory and restoring them periodically, utilizing built-in routines in the boot ROM.

How does the dual clock operation benefit the device?

It allows switching between a high-speed oscillator (up to 10 MHz) and a low-speed oscillator (32.768 kHz), enabling power saving by turning off unused oscillators while maintaining precise timing control.

What EMI reduction technologies are included?

The device incorporates patented EMI reduction technology, including low EMI clock circuitry, gradual turn-on output drivers (GTOs), and internal Icc smoothing filters to reduce radiated emissions.