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The UPD43256BGU-B10 is a high-speed CMOS static RAM (SRAM) manufactured by NEC. Below are its key specifications, descriptions, and features:

Specifications:

• Type: 32K x 8-bit (256Kb) Static RAM
• Technology: High-Speed CMOS
• Supply Voltage: 5V ±10%
• Access Time: 10ns (Max)
• Operating Temperature Range: Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
• Package: 28-pin SOP (Small Outline Package)
• I/O Interface: TTL-Compatible
• Standby Current: Low power consumption in standby mode

Descriptions:

• The UPD43256BGU-B10 is a 32K x 8-bit CMOS static RAM designed for high-speed applications.
• It features fast access time (10ns max), making it suitable for cache memory and high-performance systems.
• The device operates on a single 5V power supply and is fully static, requiring no clock or refresh cycles.
• It is TTL-compatible, ensuring easy interfacing with various microprocessors and logic circuits.

Features:

• High-Speed Operation: 10ns access time
• Low Power Consumption: CMOS technology reduces power usage
• Wide Operating Voltage: 5V ±10%
• Fully Static Design: No refresh required
• Three-State Outputs: Allows bus sharing in multi-processor systems
• Industrial-Grade Option: Available for extended temperature range (-40°C to +85°C)

This SRAM is commonly used in embedded systems, telecommunications, industrial controls, and computing applications where fast, reliable memory is required.