CY7C4271-10JC

Overview

The CY7C4271-10JC is a 32K x 9 synchronous FIFO memory fabricated using 0.5 micron CMOS technology. It supports clock frequencies up to 100 MHz with a minimum cycle time of 10 ns and data access times as low as 8 ns. The device operates on a single 5V power supply, drawing 35 mA in commercial mode and 40 mA in industrial/military modes. It features TTL-compatible inputs, independent read/write clocks, and programmable Almost Full/Empty flags.

Feature Summary

• Supports simultaneous asynchronous read and write operations with independent clock domains.
• Includes programmable status flags for precise buffer management.
• Enables depth expansion through cascading multiple devices.

Applications

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

Procurement Notes

Verify the specific suffix 'JC' corresponds to the 32-pin Plastic Leaded Chip Carrier package and Commercial temperature range (0°C to +70°C). Confirm that the -10 speed grade matches the required 100 MHz operational frequency. Ensure the source document explicitly lists this part number within the ordering information table before finalizing procurement plans.

Selection Notes

Select this component when a 32K word depth with 9-bit width is required for synchronous buffering applications. It serves as a density upgrade option for the CY7C42X1 family and offers pin compatibility with IDT72201/11/21/31/41/51 series devices. Consider the 32-pin PLCC/LCC package for surface mount integration.

Part Context

This device belongs to the Cypress Semiconductor CY7C4261/CY7C4271 family of deep synchronous FIFOs. It shares architectural similarities with the CY7C42X1 family while providing specific density and speed variations. The product line is designed for high-performance data buffering in digital signal processing and communication environments.

Replacement Considerations

Pin-compatible substitutes include the IDT72201, IDT72211, IDT72221, IDT72231, IDT72241, and IDT72251 series. Verify electrical characteristics and timing parameters against the original design requirements before substitution.

FAQ

How are the Programmable Almost Empty and Almost Full flags configured?

The flags are configured by holding WEN2/LD LOW during reset and writing offset values into the internal registers via the data inputs and clock cycles.

Can the read and write clocks operate independently?

Yes, the device supports asynchronous read and write operations, allowing RCLK and WCLK to run at different frequencies or be tied together for single-clock operation.