The X28C512P-90 is a 512K-bit CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) organized as 64K words by 8 bits. It is manufactured by Xicor Inc. and is designed for non-volatile memory applications requiring in-system electrical erasure and reprogramming. This model has an access time of 90ns.

Applications

• Storing configuration parameters in programmable logic controllers (PLCs).
• Non-volatile storage in industrial control systems.
• Data logging in instruments and meters.
• Storing setup parameters in communication equipment.
• Firmware storage in embedded systems.

Features

• Fast Access Time: 90ns access time facilitates quick data retrieval.
• Single 5V Power Supply: Operates from a single 5V power source simplifying system design.
• In-System Programmable: Allows electrical erasure and reprogramming without device removal.
• Automatic Page Write: Simplifies write operations via automatic page write cycle management.
• Data Protection: Protects data from loss due to power failures.
• TTL Compatible Inputs and Outputs: Enables simple interface to standard TTL logic.
• 64K x 8 Organization: Provides a memory capacity of 512 kilobits.

Benefits

• Easy Firmware Updates: Allows for updating firmware without needing to remove the IC.
• Secure Data: Built-in features protect against unauthorized data modifications.
• Straightforward Integration: Single 5V operation and TTL compatibility simplify design incorporation.
• Reliable Non-Volatile Storage: Provides robust data retention over extended periods.
• Broad Application Range: Suitable for devices that need configurable or updatable memory.

Additional Details

The X28C512P-90's CMOS technology helps provide dependable operation combined with low energy consumption. Automated page write routines handle the complexities of write timing and data protection mechanisms prevent corruption if power loss happens when in the middle of a write cycle. It is commonly utilized where relatively fast read access combines with infrequent or occasional EEPROM update characteristics.