The TC55257BFL-85L is a low-power 262,144-bit static RAM (SRAM) manufactured by Toshiba Semiconductor and Storage. It is organized as 32,768 words by 8 bits. The "L" designation indicates a lower power version, and the "85" likely refers to an access time of 85ns. This SRAM is suited for applications where power consumption is a primary concern and a slightly slower access time is acceptable, such as memory backup systems, portable devices, and embedded controllers.

Applications:

• Memory backup in critical systems (e.g., CMOS RAM backup)
• Low-power embedded systems
• Portable electronic devices
• Industrial control systems with power constraints
• Data logging applications

Features:

• Access time: 85 ns
• Very Low power consumption: Optimized for battery operation
• Organization: 32,768 words x 8 bits
• Single 5V power supply
• TTL compatible inputs and outputs
• Three-state outputs
• Available in various package options

Benefits:

• Extended battery life: Extremely low power consumption maximizes operating time in battery-powered devices.
• Reduced heat dissipation: Minimizes heat generation, allowing for denser and more efficient system designs.
• Data retention: Ideal for applications requiring data retention during power outages.
• Simplified system design: TTL compatibility and three-state outputs facilitate easy integration with other components.
• Reliable operation: Manufactured by Toshiba, a well-known semiconductor manufacturer, ensuring high quality.

Additional Details:

The TC55257BFL-85L operates from a single 5V power supply. It has TTL-compatible inputs and outputs for easy interfacing with standard logic circuits. The three-state outputs enable flexible memory expansion and bus sharing. Available in various package options to suit different board layouts.

The low standby current makes this SRAM an excellent choice for applications where data must be retained for extended periods with minimal power draw. Refer to the Toshiba datasheet for specific standby and operating current specifications.