The STK22C48-W45I is a 64K x 8 Nonvolatile Static RAM (NVSRAM) manufactured by Simtek Corporation (now Cypress Semiconductor). It combines the speed of SRAM with the non-volatility of EEPROM, providing fast read/write access with inherent data backup in the event of a power loss. This device is ideal for applications requiring frequent data updates and reliable data retention.

Applications:

• Data Logging: Used in data loggers to store critical data in case of power failure.
• Industrial Control: Employed in industrial control systems for storing configuration parameters and calibration data.
• Networking Equipment: Integrated into routers and switches for storing routing tables and configuration settings.
• Medical Devices: Utilized in medical devices for storing patient data and critical system settings.
• Point-of-Sale (POS) Systems: Found in POS terminals for storing transaction data and system configuration.

Features:

• Nonvolatile SRAM: Combines SRAM speed with EEPROM non-volatility.
• Fast Access Time: Offers a fast access time of 45 ns.
• Automatic Data Backup: Automatically stores data to EEPROM on power loss.
• Unlimited Endurance: Provides virtually unlimited read/write cycles to SRAM.
• Low Power Consumption: Minimizes power consumption for energy-sensitive applications.

Benefits:

• Data Protection: Ensures data integrity in the event of power loss.
• High Performance: Fast access time improves system performance.
• Reliable Data Storage: Provides reliable data storage and retrieval.
• Easy to Use: Simple interface and operation simplify system design.
• Long-Term Data Retention: Retains data for an extended period without power.

Additional Details:

The STK22C48-W45I operates at a supply voltage of 4.5V to 5.5V and is available in a standard DIP or SOIC package. It automatically stores data from SRAM to EEPROM when the power supply voltage drops below a certain threshold. The device includes a power-down mode for minimizing power consumption when not in use. It is commonly used in data logging, industrial control, and networking equipment applications. The STK22C48-W45I features a high endurance rating for the EEPROM portion, ensuring reliable data storage over a long period. The fast access time of 45ns enables quick retrieval of data, improving overall system performance. The nonvolatile nature of the memory ensures that data is retained even when power is removed, making it ideal for critical applications. The simple interface and operation simplify system design and reduce development time. The STK22C48-W45I is a reliable and efficient choice for applications requiring fast, nonvolatile memory. The automatic data backup feature ensures data integrity in the event of unexpected power loss, making it a crucial component in critical systems.