The Xicor X2210AP is a 1024-bit nonvolatile static RAM (NVSRAM), organized as 128 words by 8 bits. This type of memory combines the features of both static RAM (SRAM) for fast access and nonvolatile storage using EEPROM technology. The NVSRAM automatically stores data from the SRAM to the EEPROM when power is lost, ensuring data retention without the need for external batteries.

Applications

• Data logging: Used in applications requiring secure storage of data during power outages.
• Meter reading: Stores critical meter readings in utilities and industrial settings.
• Industrial controllers: Retains program parameters and operating states in programmable logic controllers (PLCs).
• Point-of-sale (POS) systems: Saves transaction data in retail environments.
• Medical equipment: Stores critical patient data in medical devices, ensuring data integrity in case of power failure.

Features

• 1024-bit memory: Organized as 128 words x 8 bits.
• Nonvolatile storage: Automatically stores data to EEPROM on power loss.
• Unlimited read/write cycles: SRAM portion allows for unlimited read and write operations.
• Automatic store operation: Simplifies the backup process, no external control needed.
• Fast access time: SRAM provides fast access times, typically in the nanosecond range.

Benefits

• Data protection: Ensures data is preserved during power outages without the need for batteries.
• High reliability: Combines the reliability of SRAM and EEPROM technologies.
• Ease of use: Automatic store feature simplifies system design.
• Fast data access: SRAM provides fast access times for real-time applications.
• Low power consumption: Typically requires low power for operation.

Additional Details

The X2210AP typically operates with a 5V power supply. The device initiates a store operation when the power supply voltage drops below a certain threshold. The store operation involves transferring the data from the SRAM to the EEPROM, which takes a specified amount of time (typically a few milliseconds). The device also includes protection features to prevent inadvertent store operations. Datasheets provide detailed information on timing characteristics, power consumption, and operating conditions. Proper decoupling capacitors should be used near the power pins to minimize noise and ensure stable operation. The DIP (Dual In-line Package) allows for ease of use during prototyping and in older systems.