A80960HA33SL2GY

Overview

The Altera A80960HA33SL2GY is a 32-bit superscalar microprocessor based on the i960 architecture. It operates at a core and bus clock frequency of 33 MHz with a 1x multiplier ratio. The device utilizes a 3.3 V supply voltage while maintaining 5 V tolerant inputs. It features a 16 Kbyte four-way set-associative instruction cache, an 8 Kbyte four-way set-associative data cache, and 2 Kbytes of general-purpose RAM. The processor supports up to 150 million instructions per second throughput.

Feature Summary

• Superscalar execution architecture capable of issuing multiple out-of-sequence instructions per clock cycle.
• Integrated guarded memory unit providing user/supervisor read/write/execute protection levels.
• High-speed interrupt controller supporting up to 240 external interrupts with programmable priorities.
• Dual on-chip 32-bit timers with auto-reload capability and JTAG boundary scan support.

Applications

• Industrial automation systems
• Avionics control units
• Image processing applications
• Communications equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and speed grade. Confirm RoHS compliance status as older i960 variants may not meet current environmental standards. Check for obsolescence notices or lifecycle status updates from Intel or authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when a 33 MHz operating frequency with a 1:1 bus-to-core ratio is required. Ensure the system design accommodates the 3.3 V power domain and 5 V I/O tolerance. Consider the 168-pin PGA package constraints for PCB layout. Evaluate if the 16 Kbyte instruction cache meets application latency requirements compared to higher-performance HD or HT variants.

Part Context

This part belongs to the Intel 80960Hx family of high-performance embedded processors. The HA variant specifically denotes a 1x clock multiplier configuration, distinguishing it from the HD (2x) and HT (3x) models within the same architectural family. All variants share binary compatibility with previous i960 CA/CF processors.

Replacement Considerations

Direct pin-compatible replacements within the same package are limited due to the discontinued nature of the i960 line. System redesigns may require migrating to modern ARM Cortex-M or RISC-V architectures. Verify software code compatibility if substituting with other i960 family members like the 80960HD or 80960HT.