The W27C257-10 is a high-speed, 256K-bit CMOS Electrically Erasable and Programmable Read Only Memory (EEPROM) manufactured by Winbond Electronics. Organized as 32K x 8 bits, it provides non-volatile data storage with a fast access time of 100 ns. It operates on a single 5V power supply and is designed for applications where quick data retrieval and low power consumption are crucial. The device offers high endurance and reliable data retention, making it suitable for a variety of embedded systems and industrial applications.

Applications

• Embedded systems for storing boot code and configuration data
• Industrial control equipment for storing calibration parameters and system settings
• Consumer electronics for storing user profiles and firmware
• Communication devices for storing network configurations
• Medical devices for storing patient data and device settings

Features

• Fast Access Time: 100 ns
• Single 5V Power Supply Operation
• Low Power Consumption: Active and Standby modes
• 32K x 8 bit Organization
• Automatic Page Write Operation
• Data Protection features to prevent accidental writes
• High Endurance: Minimum 100,000 erase/write cycles per byte
• Data Retention: 10 years
• TTL Compatible Inputs and Outputs
• Available in DIP and SOP packages

Benefits

• Fast access time ensures quick data retrieval, improving system performance.
• Low power consumption extends battery life in portable devices and reduces overall energy consumption.
• High endurance provides reliable data storage over extended periods, even with frequent write/erase cycles.
• Automatic page write simplifies programming and speeds up the write process.
• Data protection features prevent accidental data corruption, ensuring data integrity.
• TTL compatible I/O allows for easy integration with a wide range of microcontrollers and logic devices.
• The availability of DIP and SOP packages provides flexibility in PCB design and assembly.

Technical Specifications

The W27C257-10 operates on a 5V ± 10% power supply. It typically consumes about 30 mA in active mode and a few microamps in standby mode. The device supports both byte-write and page-write operations. The operating temperature range is from 0°C to 70°C. It is available in industry-standard DIP (Dual In-line Package) and SOP (Small Outline Package) options. Important: Refer to the official Winbond datasheet for the most accurate and current specifications.