CY7C332-20PC

Programmable Logic Device Pld Overview

The CY7C332-20PC is a UV-erasable programmable logic device (PLD) manufactured by Cypress Semiconductor Corp. It utilizes PAL-type architecture with CMOS technology and is housed in a 28-pin ceramic dual flatpack (CDFP28) package featuring a window for erasure. The device operates within an extended temperature range of -55°C to 125°C. Key electrical parameters include a maximum clock frequency of 29.4 MHz and a propagation delay of 20 ns. It contains 10 dedicated I/O macrocells, 25 inputs, and 12 outputs, supporting up to 192 product terms.

Programmable Logic Device Pld Feature Summary

• UV-erasable PAL-type architecture with 10 I/O macrocells
• Extended industrial temperature range (-55°C to 125°C)
• High-speed performance with 20 ns access time
• Windowed ceramic package for field reprogramming

Programmable Logic Device Pld Applications

• Complex logic replacement in industrial control systems
• State machine implementation in high-temperature environments
• Address decoding and bus interfacing in legacy computer architectures

Programmable Logic Device Pld Procurement Notes

Verify the integrity of the quartz window on the CDFP28 package prior to installation, as damage prevents UV erasure. Confirm that programming equipment supports the specific pinout and voltage requirements of the CY7C332 series. Ensure handling procedures protect the ceramic body from mechanical stress due to its brittle nature.

Programmable Logic Device Pld Selection Notes

Select the CY7C332-20PC when design requirements necessitate field-reprogrammable logic in extreme thermal conditions. The 20 ns speed grade offers faster switching than the 30 ns variant. Compare pin counts and macrocell availability against other PAL devices if system expansion is required. Verify compatibility with existing UV erasers and programmers.

Programmable Logic Device Pld Part Context

This component belongs to the CY7C332 family of UV PLDs from Cypress Semiconductor. It shares architectural similarities with other members like the CY7C332-30TMB but differs in speed grade and package type. The family was designed to provide flexible logic solutions before the widespread adoption of complex FPGAs.

Programmable Logic Device Pld Replacement Considerations

Direct pin-to-pin replacements are limited due to the specific PAL structure and windowed package. Consider generic PALs with equivalent macrocell counts only if reprogramming flexibility is not required. Verify that any substitute supports the -55°C to 125°C operating range.