CY37256P160-125AXC

Complex Programmable Logic Devices Overview

The CY37256P160-125AXC is a high-performance Complex Programmable Logic Device (CPLD) from the Ultra37000 family, manufactured by Infineon Technologies. It features 256 macrocells and supports up to 197 I/O pins in a 160-lead TQFP package. The device operates at a maximum frequency of 125 MHz with a typical propagation delay of 10 ns. It utilizes In-System Reprogrammable (ISR) CMOS technology via a JTAG interface, allowing design changes without altering pinouts or timing. The architecture includes a Programmable Interconnect Matrix (PIM) and logic blocks with intelligent product term allocation.

Complex Programmable Logic Devices Feature Summary

• In-System Reprogrammable (ISR) capability via JTAG interface for flexible design updates.
• High-density architecture with 256 macrocells and up to 197 I/Os.
• Simple timing model with no fanout, expander, or routing delays affecting performance.
• Programmable bus-hold capabilities on all I/Os to reduce system noise.

Complex Programmable Logic Devices Applications

• PCI Local Bus compliant digital logic applications.
• High-speed data processing and protocol conversion.
• Complex state machine implementations requiring fixed pinout flexibility.

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity through authorized Infineon distributors. Confirm RoHS compliance status as manufacturing processes evolve. Check for moisture sensitivity level (MSL) handling requirements prior to surface mount assembly. Ensure ESD protection measures are in place during storage and handling.

Complex Programmable Logic Devices Selection Notes

Select this model for designs requiring 256 macrocells with 125 MHz performance. The 160-TQFP package suits space-constrained PCB layouts. Consider the ISR feature if field upgrades or debug iterations are anticipated. Verify voltage compatibility between VCC and VCCO rails for target I/O standards.

Complex Programmable Logic Devices Part Context

Part of the Ultra37000 CPLD family, which offers consistent pinouts across densities to simplify design migration. The CY37256 variant bridges lower-density devices like the CY37192 and higher-density options like the CY37384, providing a balanced solution for moderate complexity logic applications.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same speed bin and package include CY37256P160-125AXI. Cross-family migration may require schematic adjustments due to architectural differences in logic block organization and interconnect matrices.