The STK16C88-W25I is a 64K x 8 Nonvolatile SRAM (nvSRAM) manufactured by Simtek Corporation (now Cypress Semiconductor, and later Infineon). It combines the fast access times of SRAM with the non-volatility of EEPROM, providing reliable data retention without the need for external batteries.

Applications:

• Data Logging: Used in data loggers for reliable non-volatile storage of critical data.
• Industrial Control: Integrated into industrial control systems for storing configuration parameters and process data.
• Medical Equipment: Employed in medical devices for storing patient data and calibration settings.
• Networking Equipment: Used in networking equipment for storing configuration information and routing tables.
• Point-of-Sale (POS) Systems: Integrated into POS systems for storing transaction data and system settings.

Features:

• Nonvolatile SRAM: Combines SRAM and EEPROM technologies for fast access and non-volatility.
• Fast Access Time: 25 ns access time for quick data retrieval.
• Automatic Store on Power Down: Automatically stores data to EEPROM upon power loss.
• Software Control Store: Allows data to be stored to EEPROM under software control.
• Unlimited Endurance: Virtually unlimited read and write cycles to SRAM.
• Data Retention: Retains data for 20 years in EEPROM.
• Wide Operating Voltage: Operates from a wide voltage range.

Benefits:

• Reliable Data Storage: Ensures reliable data storage with automatic store on power down and long data retention.
• Fast Access Times: Provides fast access times for high-performance applications.
• Simplified System Design: Eliminates the need for external batteries, simplifying system design.
• Enhanced System Reliability: Offers high endurance and reliable data retention for critical applications.

Additional Details:

The STK16C88-W25I operates over an industrial temperature range. It is available in a 28-pin SOIC or DIP package. For detailed specifications, including operating voltage range, current consumption, and timing diagrams, refer to the Cypress Semiconductor (formerly Simtek Corporation) datasheet. Proper decoupling capacitors should be used to ensure stable power supply operation.