DS1314S/T&R

Controllers Overview

The DS1314S/T&R 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 during power loss and includes a battery monitor that signals low-battery conditions on an active-low output. It supports processor reset functions and operates within an industrial temperature range of -40°C to +85°C.

Controllers Feature Summary

• Converts standard CMOS SRAM into nonvolatile memory with automatic battery backup switching
• Monitors lithium cell voltage and signals impending battery failure via an open-drain warning output
• Unconditionally write-protects SRAM when the main power supply is out of tolerance
• Provides system reset signals to hold processors in reset during power-up or detect power failures

Controllers Applications

• Battery backup systems for nonvolatile SRAM modules
• Lithium battery capacity monitoring and end-of-life warning circuits
• Processor-based systems requiring power-fail detection and reset generation

Controllers Procurement Notes

Verify the specific ordering suffix against official documentation, as it determines the package type and RoHS compliance status. Confirm availability through authorized distributors, noting that lead times may vary based on manufacturing schedules. Ensure the selected variant matches the required pin count and thermal characteristics for your PCB layout.

Controllers Selection Notes

Select this component when converting CMOS SRAM to nonvolatile storage is required without complex external logic. Choose the 16-pin SOIC version for designs needing dedicated reset outputs alongside battery monitoring. Consider the TOL pin configuration to match the nominal system voltage (3.0V or 3.3V) for accurate power-fail detection thresholds.

Controllers Part Context

The DS1314 series belongs to Analog Devices' Maxim Integrated portfolio of memory controllers. This specific part integrates power management and battery health monitoring into a single CMOS circuit. It addresses the common application challenge of maintaining data integrity in volatile memory during unexpected power interruptions.

Controllers Replacement Considerations

DS1314S+