CY7C4291-10JXC

FIFOs Memory Overview

The CY7C4291-10JXC is a 128K x 9 Deep Synchronous FIFO memory manufactured by Infineon Technologies (formerly Cypress Semiconductor). It operates at a maximum frequency of 100 MHz with a cycle time of 10 ns. The device utilizes 0.5-micron CMOS technology and features independent read and write clocks. It includes programmable Almost Empty and Almost Full flags, TTL-compatible inputs, and center power/ground pins for noise reduction.

FIFOs Memory Feature Summary

• Supports fully asynchronous and simultaneous read/write operations using independent clock domains.
• Features programmable status flags for precise buffer level monitoring.
• Provides width expansion capability through parallel device connection.

FIFOs Memory Applications

• High-speed data acquisition systems
• Multiprocessor interface buffering
• Communications data buffering

FIFOs Memory Procurement Notes

Verify the component is sourced from authorized distributors to ensure authenticity. Confirm the package type matches the J65 specification. Check for RoHS compliance markings corresponding to the Pb-Free suffix. Validate that the operating temperature range meets commercial requirements.

FIFOs Memory Selection Notes

Select this model for applications requiring 128K depth and 9-bit word width. Ensure the system supports independent read and write clock signals. Verify voltage compatibility with 5V logic levels. Consider the 32-pin PLCC package constraints for PCB layout.

FIFOs Memory Part Context

This component belongs to the CY7C42X1 family of deep synchronous FIFOs. It offers pin-compatible density upgrades within the series. The device is designed for high-speed buffering in digital signal processing and communication networks.

FIFOs Memory Replacement Considerations

Pin-compatible substitutes include IDT72201, IDT72211, IDT72221, IDT72231, IDT72241, and IDT72251 families. Verify electrical specifications and timing parameters before substitution.

FIFOs Memory FAQ

How are the programmable flags configured?

The Almost Empty and Almost Full flags are programmed via the WEN2/LD and WCLK pins during reset or specific control sequences.

Can the read and write clocks be synchronized?

Yes, the RCLK and WCLK can be tied together for single-clock operation or run independently for asynchronous applications.