CY62256L-70SNXC

Memory IC Overview

The CY62256L-70SNXC is a 256K-bit (32K x 8) asynchronous static RAM manufactured by Infineon Technologies. It operates within a voltage range of 4.5V to 5.5V and features a 70ns access time. The device utilizes a 28-lead Narrow SOIC package with lead-free construction. Designed for commercial applications, it supports an operating temperature range from 0°C to 70°C. Key electrical characteristics include a maximum active supply current of 50mA and a standby current of up to 5µA.

Memory IC Feature Summary

• Features automatic power-down when deselected to reduce power consumption significantly.
• Provides TTL-compatible inputs and outputs for easy system integration.
• Supports memory expansion through dedicated chip enable and output enable control signals.

Memory IC Applications

• General-purpose data storage in embedded systems
• Buffer memory in microprocessor-based designs
• Cache memory applications

Memory IC Procurement Notes

Verify the component status as this specific part number may be discontinued or subject to end-of-life notifications. Confirm that the lead-free packaging designation aligns with current environmental compliance requirements for your manufacturing process. Ensure compatibility with existing PCB footprints for the 28-lead Narrow SOIC package before finalizing procurement plans.

Memory IC Selection Notes

Select this component for designs requiring standard 5V logic levels and moderate speed performance. The narrow body package is suitable for space-constrained surface-mount layouts. Consider the LL version if lower standby power is critical, though verify that the specific speed grade meets timing constraints.

Memory IC Part Context

This part belongs to the CY62256 family of high-performance CMOS static RAMs originally developed by Cypress Semiconductor. The 'L' suffix indicates a specific speed and power variant within the series, while 'SNXC' denotes the 28-lead Narrow SOIC package with lead-free finish. The family offers various speed grades and package options to suit different commercial and industrial needs.

Memory IC Replacement Considerations

Direct replacements include CY62256L-70SNC and CY62256LL-70SNXC. Verify pinout compatibility and ensure the substitute maintains the same voltage and temperature specifications.

Memory IC FAQ

What is the function of the CE and OE pins?

CE (Chip Enable) selects the device, while OE (Output Enable) controls the direction of the I/O pins. When CE is LOW and OE is LOW, the device performs a read operation.

How does the device handle deselection?

When deselected (CE HIGH), the device enters a low-power standby mode, reducing power consumption by approximately 99.9% compared to active operation.