CD82C37-12

Specialized Overview

The CD82C37-12 is a CMOS high-performance programmable DMA controller manufactured by Harris Corporation. It serves as an enhanced version of the industry-standard 8237A, fabricated using advanced 2-micron CMOS technology. The device features four independent DMA channels and supports memory-to-memory transfers alongside block initialization. It maintains pin compatibility with NMOS designs while offering improved performance and significantly reduced power consumption through its fully static design.

Specialized Feature Summary

• Enhanced functionality compared to standard NMOS DMA controllers
• Fully static design permitting gated clock operation for power reduction
• Supports direct data transfer between external devices and system memory
• Includes memory-to-memory transfer capability

Specialized Applications

• Systems requiring direct memory access for peripheral data transfer
• High-performance computing environments utilizing Harris CMOS architecture
• Legacy systems upgrading from NMOS 8237A implementations

Specialized Procurement Notes

Verify component authenticity and datasheet alignment when sourcing the CD82C37-12. Confirm package type and manufacturing origin, as Harris Corporation assets have transitioned through various entities including Intersil and Renesas. Ensure the specific suffix matches project requirements regarding speed grade and packaging specifications before finalizing procurement orders.

Specialized Selection Notes

Select the CD82C37-12 for applications demanding low-power CMOS DMA control with backward compatibility to older NMOS designs. Evaluate system clock frequencies against the device's operational limits. Consider the availability of ceramic DIP packages for robust industrial or military-grade deployments where plastic alternatives may not suffice.

Specialized Part Context

This component belongs to the Harris 82C series of CMOS peripherals, designed to modernize legacy microprocessor architectures. The 82C37 variant specifically addresses the need for efficient data movement in complex bus structures. Its development reflects the industry shift toward lower power consumption without sacrificing the functional integrity required by established 8086/8088 family ecosystems.