A80486DX2DA66

Overview

The A80486DX2DA66 is a 32-bit microprocessor based on the Intel i486 DX architecture, operating at a clock frequency of 66 MHz. It utilizes CMOS technology and is housed in a 168-pin Ceramic Pin Grid Array (CPGA) package with dimensions of 44.45 mm x 44.45 mm. The device features an integrated cache, supports dynamic bus sizing, burst bus operations, and multiprocessor configurations. It includes built-in self-test capabilities and boundary scan support.

Feature Summary

• Integrated cache for enhanced processing performance
• Support for multiprocessor systems and dynamic bus sizing
• Built-in self-test functionality for reliability verification
• Boundary scan capability for testing and debugging

Applications

• Industrial control systems requiring robust processing
• Multiprocessor computing environments
• Embedded applications utilizing legacy i486 architectures
• Systems requiring built-in self-test diagnostics

Procurement Notes

Verify component authenticity as this part may be obsolete or from surplus channels. Confirm package integrity and pin alignment for the 168-CPGA format. Check for RoHS compliance status, as indicated by non-compliance markers in some records. Ensure compatibility with existing system clocks and voltage requirements before integration.

Selection Notes

Select this processor for designs specifically requiring i486 DX compatibility and 66 MHz operation. Consider the CPGA168 package constraints for PCB layout. Evaluate thermal management needs due to ceramic packaging characteristics. Verify software toolchain support for legacy 32-bit instruction sets if upgrading existing systems.

Part Context

This component belongs to the Intel i486 family, often distributed under various brand names including Altera in specific contexts. It represents a generation of high-performance 32-bit processors used in desktop and embedded systems during the mid-1990s. The 'DX2' designation indicates internal clock doubling relative to the external bus speed.

Replacement Considerations

Direct substitutes include the A80486DX2SA66 and A80486DX-33 within the same family. Cross-reference pinouts and electrical specifications carefully. Modern replacements typically require architectural adaptation rather than direct pin-to-pin substitution.