DS1312E+T&R

Controllers Overview

The DS1312E+T&R is a nonvolatile memory controller designed to convert CMOS SRAM into nonvolatile memory. It operates within a supply voltage range of 4.75V to 5.5V and supports an industrial temperature range from -40°C to +85°C. The device features a 20-pin TSSOP package and includes a lithium battery monitor with a warning output. It provides automatic switching to battery backup during power failures, unconditionally write-protects the SRAM when VCC is out of tolerance, and offers optional processor reset functionality.

Controllers Feature Summary

• Converts standard CMOS SRAM into nonvolatile memory by managing power sources
• Monitors lithium battery voltage and signals low-battery conditions via an open-drain output
• Automatically switches to battery backup and inhibits chip enable to protect data during power failures
• Provides system reset signal to hold processor in reset during power-up transients

Controllers Applications

• Battery-backed SRAM modules requiring data retention
• Systems needing advanced warning of impending lithium battery failure
• Processor-based systems requiring power-fail detection and reset generation

Controllers Procurement Notes

Verify the specific ordering suffix for tape and reel packaging configuration. Confirm that the component meets RoHS compliance requirements as indicated by the plus sign in the part number. Ensure compatibility with the 20-TSSOP footprint and validate that the operating voltage and temperature ranges align with the target system specifications before procurement.

Controllers Selection Notes

Select this controller when converting CMOS SRAM to nonvolatile storage is required. Choose the 20-pin TSSOP variant for space-saving surface-mount designs. Consider the integrated battery monitoring and reset features if the application demands proactive maintenance alerts and robust power-fail protection without external logic components.

Controllers Part Context

This component belongs to the DS1312 series of nonvolatile controllers manufactured by Analog Devices Inc./Maxim Integrated. The series includes various package options such as 8-pin DIP, 8-pin SOIC, 16-pin SOIC, and 20-pin TSSOP. The DS1312E+ specifically denotes the 20-pin TSSOP version with lead-free/RoHS-compliant construction.

Controllers Replacement Considerations

DS1312S+