CY7C4255-15AXC

FIFOs Memory Overview

The CY7C4255-15AXC is a synchronous first-in, first-out (FIFO) memory device manufactured by Infineon Technologies. It features an 8K x 18 bit organization and operates with a maximum clock frequency of 66.7 MHz. The component utilizes a 0.5 micron CMOS process and supports independent read and write clocks for asynchronous operation. It includes programmable Almost Full and Almost Empty flags, retransmit functionality, and depth expansion capabilities via cascade pins. The device is housed in a 64-pin TQFP package and operates within a commercial temperature range of 0°C to +70°C.

FIFOs Memory Feature Summary

• Supports fully asynchronous and simultaneous read and write operations using independent clock domains.
• Includes programmable status flags for Almost Full and Almost Empty conditions alongside standard Empty and Full indicators.
• Enables depth expansion through dedicated Cascade Input and Output pins for connecting multiple devices.
• Features a retransmit function that allows resetting the internal read pointer to the first physical location.

FIFOs Memory Applications

• High speed data acquisition systems requiring buffering between disparate data rates.
• Multiprocessor interfaces needing reliable data transfer synchronization.
• Communications buffering applications handling packet data streams.

FIFOs Memory Procurement Notes

Verify component authenticity as this part may be subject to obsolescence or limited availability. Confirm the specific suffix 'AXC' corresponds to the required lead-free packaging and commercial temperature grade. Ensure design compatibility with the 64-pin TQFP footprint and validate voltage levels against system requirements before integration.

FIFOs Memory Selection Notes

Select the CY7C4255-15AXC when an 8K word depth with 18-bit width is required. Choose this model over the CY7C4265 if lower capacity suffices for the application. Consider the -15 speed grade for 66.7 MHz operation needs. Evaluate the need for synchronous flag modes and retransmit features inherent to this family.

FIFOs Memory Part Context

This component belongs to the CY7C42X5 family of deep synchronous FIFOs. It shares pinout and functional compatibility with the CY7C4265 and CY7C4265A models, differing primarily in storage density. The family is designed for high-speed data buffering in parallel interface environments.

FIFOs Memory Replacement Considerations

The CY7C4265-15AXC offers identical functionality with increased 16K x 18 density. The IDT72205/15/25/35/45 series provides pin-compatible alternatives from other manufacturers. Verify electrical characteristics and timing parameters when substituting with these parts.