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DS1321S The DS1321S from Analog Devices / Maxim Integrated is a Nonvolatile RAM Controller designed to convert CMOS SRAM into nonvolatile memory. It operates at 4.75V to 5.5V and is suitable for industrial temperature ranges.
Mfr Part #:

DS1321S

Available from 1 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The DS1321S from Analog Devices / Maxim Integrated is a Nonvolatile RAM Controller designed to convert CMOS SRAM into nonvolatile memory. It operates at 4.75V to 5.5V and is suitable for industrial temperature ranges.
✓ Total Stock: 6,500 pcs
$ Price Range: $1.50

DS1321S Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
6,500 pcs
On Request
6500 pcs On Request 1 On Request On Request On Request On Request On Request
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DS1321S Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Controller Type
Memory Organization
Mounting Type
Operating Temperature
Operating Voltage
Supplier Device Package
Supplier Package
Voltage
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DS1321S Description

Short technical summary and product information.

The DS1321S by Analog Devices / Maxim Integrated is a specialized integrated circuit designed to provide nonvolatile memory functionality for CMOS SRAM. This controller monitors incoming power and automatically switches to a battery backup supply when a power failure occurs, ensuring data integrity.

 

Key features include flexible memory organization supporting up to four SRAMs in various configurations (4 banks of 1, 2 banks of 2, or 1 bank of 4). It also incorporates a lithium battery monitor that provides advanced warning of impending battery failure through a dedicated output signal.

 

The device operates within a voltage range of 4.75V to 5.5V and is rated for an industrial temperature range of -40°C to +85°C. The DS1321S is available in a 16-SOIC surface-mount package, making it suitable for a wide array of electronic designs requiring reliable data retention.

 

This controller is ideal for applications where data loss due to power interruptions is a concern, such as in embedded systems, data loggers, and point-of-sale devices.

DS1321S Quick Information

Product Type: Nonvolatile RAM Controller
Canonical Name: DS1321S Flexible Nonvolatile Controller with Lithium Battery Monitor
Subcategory: PMIC - Power Supply Controllers, Monitors

DS1321S Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

DS1321S Estimated Pricing

Qty Low High
1+ $1.50 $1.50

Estimated market price range - modelled values for guidance only, not live distributor offers.

DS1321S Features

  • Converts CMOS SRAM into nonvolatile memory.
  • Automatically switches to battery backup supply.
  • Monitors lithium cell voltage for battery failure.
  • Supports flexible memory organization.
  • Industrial temperature range of -40°C to +85°C.

DS1321S Applications

  • Ensures data integrity during power failures.
  • Provides warning of impending battery depletion.
  • Suitable for embedded system designs.
  • Ideal for data logging applications.

DS1321S FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage for the DS1321S?

The operating voltage for the DS1321S is between 4.75V and 5.5V.

What is the operating temperature range of the DS1321S?

The DS1321S operates in an industrial temperature range from -40°C to +85°C.

What type of controller is the DS1321S?

The DS1321S is a Nonvolatile RAM controller.

What package is the DS1321S supplied in?

The DS1321S is supplied in a 16-SOIC package.

How does the DS1321S protect data during power loss?

The DS1321S automatically switches to a battery backup supply when VCC power failure occurs, write-protecting the SRAM.

Does the DS1321S monitor battery status?

Yes, the DS1321S monitors the voltage of a lithium cell and provides an advanced warning of impending battery failure.

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