CY37128P84-125JXI

Complex Programmable Logic Devices Overview

The CY37128P84-125JXI is a 5V Ultra37000 CPLD featuring 128 macrocells and 69 I/O pins in an 84-lead PLCC package. It operates at a maximum frequency of 125 MHz with a worst-case propagation delay of 6.5 ns. The device supports In-System Reprogramming (ISR) via JTAG, allowing design changes without pinout or timing alterations. It includes programmable bus-hold capabilities on all I/Os and flexible clocking with four synchronous clocks per logic block.

Complex Programmable Logic Devices Feature Summary

• In-System Reprogrammable (ISR) architecture enabling board-level updates via JTAG without redesign.
• Simple timing model with fixed 6.5 ns worst-case propagation delay regardless of logic complexity.
• Intelligent product term allocator providing 0 to 16 product terms per macrocell with steering and sharing.
• PCI Local Bus specification compliant for 5V operation.

Complex Programmable Logic Devices Applications

• High-density programmable logic solutions requiring system performance.
• PCI-compatible interface designs.
• Applications needing in-system reconfiguration without pinout changes.

Complex Programmable Logic Devices Procurement Notes

Verify the manufacturer origin as Cypress Semiconductor Corporation within the Infineon portfolio. Confirm the 84-lead PLCC package and 125 MHz speed bin match the specific ordering requirements. Ensure compatibility with 5V ISR programming interfaces.

Complex Programmable Logic Devices Selection Notes

Select this part for designs requiring 128 macrocells and 69 I/Os in an 84-pin footprint. The 125 MHz speed bin suits moderate-speed applications. Verify VCCO connections for 5V or 3.3V I/O levels as needed. Consider the simple timing model for predictable performance across different logic configurations.

Complex Programmable Logic Devices Part Context

Part of the Ultra37000 family of CMOS CPLDs. This family ranges from 32 to 512 macrocells. The CY37128 variant specifically offers a balance of density and I/O count. It shares consistent package pinouts across densities to simplify design migration.

Complex Programmable Logic Devices Replacement Considerations

Check for other speed bins within the CY37128 series (e.g., 100, 83 MHz) if lower performance is acceptable. Verify package availability for alternative suffixes. No direct cross-model substitutes are confirmed in the provided datasheet.