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DESCRIPTION

The WC32P040 is a 68000-compatible, high-performance, 32-bit microprocessor. The WC32P040 is a virtual memory microprocessor employing multiple concurrent execution units and a highly intergrated architecture that provides very high performance in a monolithic HCMOS device. It has a 68030-compatible integer unit (IU) and two independent caches. The WC32P040 contains dual, independent, demand-paged memory management units (MMUs) for instruction and data stream accesses and independent, 4-Kbyte instruction and data caches. The WC32P040 has a 68881/68882-compatible fl oating-point unit (FPU).

68040 FEATURES

■ Selection of Processor Speeds: 25, 33MHz

■ Military Temperature Range: -55°C to +125°C

■ Packaging

? 179 pin Ceramic PGA (P4)

? 184 lead Ceramic Quad Flatpack, CQFP (Q4)

■ 6-Stage Pipeline, 68030-Compatible IU

■ 68881/68882-Compatible FPU

■ Independent Instruction and Data MMUs

■ Simultaneously Accessible, 4-Kbyte Physical Instruction Cache and 4-Kbyte Physical Data Cache

■ Low-Latency Bus Acceses for Reduced Cache Miss Penalty

■ Multimaster/Multiprocessor Support via Bus Snooping

■ Concurrent IU, FPU, MMU, and Bus Controller Operation Maximizes Throughput

■ 32-Bit, Nonmultiplexed External Address and Data Buses with Synchronous Interface

■ User Object-Code Compatible with all Earlier 68000 Microprocessors

■ 4-GigaByte Direct Addressing Rang