CY7C1021BN-15VXI

Memory IC Overview

The CY7C1021BN-15VXI is a 1-Mbit (64K x 16) CMOS static RAM manufactured by Infineon Technologies. It features an asynchronous parallel interface with a maximum access time of 15 ns. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an industrial temperature range from -40°C to +85°C. It utilizes a 44-pin (400-mil-wide) Molded SOJ package in a Pb-free configuration.

Memory IC Feature Summary

• Features automatic power-down when deselected to reduce active power consumption
• Provides independent control of upper and lower byte data lines via BHE and BLE inputs
• Supports bidirectional I/O pins that enter high-impedance states during deselection or write operations

Memory IC Applications

• Industrial embedded systems requiring fast random access memory
• Automotive electronic modules operating in extended temperature environments
• High-speed data buffering and cache applications in consumer electronics

Memory IC Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type, lead-free status, and temperature grade. Confirm current availability as distribution channels may vary for legacy components. Ensure compatibility with existing system voltage levels and thermal requirements before procurement.

Memory IC Selection Notes

Select this component for designs requiring a 64K x 16 organization with 15 ns access speed. Ensure the host system provides a stable 5V supply within specified tolerances. Consider the 44-pin SOJ footprint constraints during PCB layout. Verify that the industrial temperature rating meets the operational environment requirements.

Memory IC Part Context

This part belongs to the CY7C1021B family of high-performance CMOS static RAMs. The series includes variants with different access times and temperature ratings. The manufacturer transitioned from Cypress Semiconductor to Infineon Technologies, maintaining the same functional specifications for these legacy memory devices.

Memory IC Replacement Considerations

CY7C1021BN-15VI: Industrial grade, non-Pb-free version in the same package.

Memory IC FAQ

How does the device manage power consumption?

The device incorporates an automatic power-down feature that significantly reduces power consumption when the chip is deselected.

What is the function of the BHE and BLE pins?

BHE (Byte High Enable) and BLE (Byte Low Enable) are active-low inputs that allow independent writing to the upper (I/O9-I/O16) and lower (I/O1-I/O8) bytes of data.