71V256SA20PZG

Overview

The Renesas Electronics Corporation 71V256SA20PZG is a 3.3V CMOS asynchronous static random-access memory (SRAM) organized as 32K x 8, providing a total storage capacity of 256 kbit. It features a parallel interface with a maximum access time of 20 ns. The device operates on a single 3.3V power supply within a voltage range of 3 V to 3.6 V and draws a maximum supply current of 90 mA. Designed for surface-mount installation, it is housed in a 28-pin TSOP package. The component supports an operating temperature range from 0°C to +70°C.

Feature Summary

• Fully static asynchronous circuitry eliminates the need for external clocks or periodic refresh cycles during operation.
• Low standby power consumption ensures extended battery life when the chip select input is at a CMOS level.
• Input and output pins are LVTTL-compatible, facilitating direct interfacing with standard logic families.

Applications

• High-performance processor secondary cache systems
• Battery-operated portable electronic devices requiring low standby power
• Industrial control systems operating within commercial temperature ranges

Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm RoHS compliance status and moisture sensitivity levels prior to assembly. Review official discontinuation notifications for lifecycle management. Ensure packaging specifications match production requirements. Validate technical parameters against current design specifications before integration.

Selection Notes

Select this model for applications requiring fast asynchronous data access without clock synchronization. Consider the 20 ns access speed for moderate performance needs. Evaluate the 28-pin TSOP footprint for space-constrained PCB layouts. Verify compatibility with 3.3V logic levels and LVTTL interfaces. Assess thermal requirements against the commercial temperature grade limitations.

Part Context

This component belongs to the 71V256SA series of 3.3V asynchronous SRAMs manufactured by Renesas Electronics. The series offers various access time options and package configurations to suit different system performance and form factor requirements. It serves as a volatile memory solution for embedded systems and industrial applications.

Replacement Considerations

Public confirmed substitute part numbers: IDT71V256SA20PZG, 71V256SA20YG, 71V256SA20PZGI.

FAQ

Does the 71V256SA20PZG require periodic refresh cycles?

No, the device uses fully static asynchronous circuitry and does not require any clocks or refresh operations for normal functioning.

What is the maximum power consumption in standby mode?

Under full standby conditions where chip select is at a CMOS level and frequency is zero, power consumption is guaranteed to be less than 6.6 mW.