CY7C332-20QMB

Programmable Logic Device Pld Overview

The CY7C332-20QMB is a UV Erasable Programmable Logic Device (PLD) manufactured by Cypress Semiconductor Corp. It utilizes PAL-type architecture with CMOS technology, offering a maximum propagation delay of 20ns. The device features 12 I/O macrocells and supports variable product terms for flexible logic implementation. It operates within an extended temperature range of -55°C to 125°C and is housed in a ceramic quad flatpack (CQFP) package with 44 pins. This component is designed for high-speed digital logic applications requiring reprogrammability.

Programmable Logic Device Pld Feature Summary

• UV Erasable Programmable Logic Device (PLD) with PAL-type architecture
• High-speed performance with 20ns propagation delay
• 12 I/O Macrocells with variable product terms
• Extended industrial/military temperature range (-55°C to 125°C)
• Ceramic Quad Flatpack (CQFP) 44-pin package

Programmable Logic Device Pld Applications

• Complex digital logic replacement in embedded systems
• State machine implementation in industrial control units
• Address decoding and bus interface logic in military avionics
• Prototyping custom logic functions in high-reliability environments

Programmable Logic Device Pld Procurement Notes

Verify the specific suffix 'QMB' against official Cypress documentation to confirm pinout compatibility and electrical specifications. Ensure that UV erasure capabilities are accounted for in the system design, as this device requires ultraviolet light for reprogramming. Confirm RoHS compliance status if required by project specifications, noting that older Cypress PLDs may not be fully compliant.

Programmable Logic Device Pld Selection Notes

Select the CY7C332-20QMB when a PAL-type architecture with 12 macrocells is sufficient for the logic density requirements. The 20ns speed grade is suitable for moderate-frequency digital systems. Consider the CQFP-44 package constraints for PCB layout. Compare against the CY7C330 or CY7C331 series if different I/O counts or speed grades are needed. Verify that the UV window on the package can be exposed for erasure during maintenance or reconfiguration.

Programmable Logic Device Pld Part Context

The CY7C332 belongs to Cypress's EPLD (Erasable Programmable Logic Device) family, specifically the UV-erasable subset. These devices were widely used before Flash-based PLDs became dominant. The 'CY7C332' designation indicates the base logic structure, while '-20' denotes the 20ns speed grade, and 'QMB' specifies the ceramic QFP package with military/extended temperature rating. This part represents legacy programmable logic technology.

Programmable Logic Device Pld Replacement Considerations

Direct pin-to-pin replacements may include other Cypress CY7C332 variants with different speed grades (e.g., CY7C332-25QMB). For modern equivalents, consider Cypress/Infineon Flash PLDs such as the CY14C series, though architectural differences require schematic review. Generic PAL replacements like GAL16V8 are insufficient due to lower macrocell count. Always verify logic function equivalence when substituting.