DS1314S+

Overview

The DS1314S+ is a nonvolatile memory controller IC in a 16-SOIC package. It converts CMOS SRAM into nonvolatile memory by monitoring VCCI for out-of-tolerance conditions and automatically switching to a lithium battery backup supply upon power failure. The device provides unconditionally write-protected SRAM when VCC is out of tolerance. It features an open-drain Battery Warning output that signals low-battery conditions based on periodic loaded-voltage measurements. The DS1314S+ includes a Reset output that warns processors of impending power failure and holds the processor in reset during system power-up.

Feature Summary

• Converts CMOS SRAM into nonvolatile memory with automatic battery backup switching
• Unconditionally write-protects SRAM when VCC is out of tolerance
• Monitors lithium cell voltage and signals low-battery condition via active-low output
• Holds processor in reset during system power-up and detects power failures

Applications

• Battery Monitoring in NV SRAM Modules
• NV SRAM Frequently Asked Questions
• Selecting a Backup Source for Real-Time Clocks

Procurement Notes

Verify the specific suffix against official documentation, as ordering codes may indicate variations in packaging or environmental compliance without altering core functionality. Confirm availability status through authorized distributors, as lead times and stock levels fluctuate. Ensure the selected variant matches the required pin count and package dimensions for your PCB layout. Cross-reference the manufacturer's latest datasheet revision to confirm all electrical characteristics and operating conditions.

Selection Notes

Choose the DS1314S+ when a 16-pin surface-mount solution is required for nonvolatile RAM control. This variant specifically includes the RST pin for processor reset generation, unlike the 8-pin version. Select this component if your design requires automatic write-protection and battery monitoring within the industrial temperature range. Verify that the TOL pin configuration aligns with your system's nominal supply voltage requirements.

Part Context

The DS1314 series serves as a dedicated controller for converting standard CMOS SRAM into nonvolatile memory systems. The DS1314S+ represents the 16-pin SOIC variant within this family, offering additional reset functionality compared to smaller packages. Manufactured by Analog Devices Inc./Maxim Integrated, it addresses the need for reliable data retention during power interruptions in embedded systems.

Replacement Considerations

DS1314S+