CY37064P44-125AXI

Complex Programmable Logic Devices Overview

The CY37064P44-125AXI is a 5V In-System Reprogrammable (ISR) Complex Programmable Logic Device (CPLD) from the Ultra37000 family. It contains 64 macrocells and supports up to 37 I/O pins in a 44-lead TQFP package. The device operates within a supply voltage range of 4.5V to 5.5V, with VCCO supporting either 5V or 3.3V levels. It features a maximum propagation delay of 12.5 ns and a maximum frequency of 125 MHz. The architecture includes a Programmable Interconnect Matrix (PIM), four synchronous clocks, and an asynchronous product term clock.

Complex Programmable Logic Devices Feature Summary

• In-System Reprogrammable (ISR) via JTAG interface for design changes without pinout or timing modifications
• Simple timing model with no fanout, expander, or routing delays; worst-case propagation delay of 12.5 ns
• Flexible clocking with four global synchronous clocks and one asynchronous product term clock per logic block
• Programmable bus-hold capabilities on all I/Os to reduce system noise and allow unused pins to remain unconnected

Complex Programmable Logic Devices Applications

• PCI Local Bus compliant logic interfacing
• High-performance digital logic replacement
• Complex state machine implementations
• Bus protocol bridging and translation

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed bin suffix '125' corresponds to the required 125 MHz performance. Confirm the 'AXI' suffix indicates the industrial temperature range (-40°C to +85°C) and lead-free packaging status as defined by Infineon/Cypress documentation. Ensure the 44-lead TQFP package matches the target PCB footprint.

Complex Programmable Logic Devices Selection Notes

Select this component when 64 macrocells are sufficient for the design logic density. The 44-pin package limits the available I/O count to 37 pins. Choose the 5V version if the system requires 5V ISR programming or interfaces with 5V buses. Consider higher density devices like the CY37128 if more macrocells or I/Os are needed while maintaining the same package form factor.

Complex Programmable Logic Devices Part Context

This part belongs to the Ultra37000 CPLD family, originally developed by Cypress Semiconductor and later acquired by Infineon Technologies. The family provides a scalable solution ranging from 32 to 512 macrocells with consistent pinouts across densities to simplify design migration. The CY37064 represents the entry-level density in this high-performance series.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other CY37064 variants with different speed bins (e.g., -100, -143) or packages. For higher capacity needs, the CY37128 offers 128 macrocells in compatible packages. Cross-family replacements require careful verification of pin compatibility and timing constraints.