TS68020VR1-20

Overview

The TS68020VR1-20 is a high-performance 32-bit microprocessor based on the TS68000 family architecture. It features a pipelined execution unit with an on-chip instruction cache and supports dynamic bus sizing for 8-, 16-, and 32-bit peripherals. The device operates at a maximum clock frequency of 20 MHz, utilizes a single 5.0 VDC power supply, and provides a 4-Gbyte direct addressing range. It includes sixteen 32-bit general-purpose registers, two supervisor stack pointers, and a co-processor interface for floating-point operations.

Feature Summary

• Pipelined architecture with on-chip instruction cache to accelerate instructions and improve bus bandwidth
• Co-processor interface supporting companion 32-bit peripherals such as the TS68881 and TS68882
• Dynamic bus sizing efficiently supporting 8-, 16-, and 32-bit memories and peripherals
• Full support of virtual memory and virtual machine environments

Applications

• High-level language applications requiring enhanced addressing modes
• Bit-oriented applications such as video graphics processing
• Systems utilizing external floating-point co-processors
• Virtual memory and virtual machine implementations

Procurement Notes

Verify that the specific suffix 'V' corresponds to the required commercial temperature range (-40°C to +85°C) rather than the military range (-55°C to +125°C). Confirm package type matches the 'R' designation if applicable, though datasheet lists PGA and CQFP options. Ensure compliance with MIL-STD-883 Class B or DESC 5962 requirements if specified in the purchase order.

Selection Notes

Select this component when a full 32-bit implementation of the 68000 family is required with integrated caching. Consider the 20 MHz speed grade for systems needing higher throughput than the 16.67 MHz variant. Verify that the system design accommodates the HCMOS technology power dissipation characteristics and thermal resistance values provided in the datasheet.

Part Context

The TS68020 represents the first full 32-bit evolution of the TS68000 family, transitioning from 16-bit origins. Manufactured using HCMOS technology, it combines CMOS structures for speed and low power with HMOS structures for area efficiency. The processor integrates approximately 190,000 transistors and offers object code compatibility with earlier TS68000 processors while adding new data types and addressing modes.

Replacement Considerations

TS68020MF20

FAQ

What is the function of the Cache Disable (CDIS) signal?

The CDIS signal dynamically disables the on-chip instruction cache to assist emulator support during debugging.

How does the TS68020 handle interrupt priorities?

It uses three encoded interrupt priority level signals (IPL0-IPL2) to provide the processor with an encoded interrupt level.