The W27E040-12 is a high-performance CMOS Electrically Erasable and Programmable Read Only Memory (EEPROM) from Winbond Electronics. With a memory capacity of 4 Megabits organized as 512K x 8 bits, this device offers fast access times and low power consumption. It operates on a single 5V power supply and is designed for applications that require non-volatile data storage with frequent updates. The W27E040-12 is ideal for embedded systems, industrial control applications, and other systems where reliable data retention and quick access are critical.

Applications

• Embedded systems for storing firmware, boot code, and configuration data
• Industrial control systems for storing calibration parameters and system settings
• Telecommunications equipment for storing network configurations and routing tables
• Consumer electronics for storing user profiles and application data
• Automotive electronics for storing engine control parameters and diagnostic information

Features

• Fast Access Time: 120 ns
• Single 5V Power Supply Operation
• Low Power Consumption: Active and Standby modes
• 512K x 8 bit Organization
• Automatic Page Write Operation
• Data Protection: Prevents Accidental Data Corruption
• 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 overall system performance.
• Low power consumption extends battery life in portable devices and reduces overall energy consumption.
• High endurance guarantees reliable data storage over an extended lifespan, even with frequent updates.
• Automatic page write simplifies the programming process and reduces write times.
• Data protection mechanisms prevent accidental data corruption, ensuring data integrity.
• TTL compatible I/O simplifies integration with a wide range of microcontrollers and digital logic devices.
• The availability of both DIP and SOP packages provides flexibility in PCB design and assembly.

Technical Specifications

The W27E040-12 operates on a 5V ± 10% power supply. It features a typical active current of 30 mA and a standby current of 10 μA. The device supports both byte-write and page-write operations, facilitating efficient data programming. The operating temperature range is from 0°C to 70°C. Package options include DIP (Dual In-line Package) and SOP (Small Outline Package). Important Note: Always consult the official Winbond datasheet for the most accurate and up-to-date specifications.