What is the Additional Feature ?

Name: DS1211S+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1211S+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc./Maxim Integrated DS1211S+

Part No.:: DS1211S+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: 20-SOIC (0.295, 7.50mm Width)

Datasheet:: DS1211S+.pdf

Description:: IC CONTROLLER 8-CHIP NV 20-SOIC

In Stock:: 2877

Quantity:: Add To Cart

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DS1211S+ Specifications

Packaging:
Tube,Tube
Series:
-
ProductStatus:
Obsolete
ControllerType:
Nonvolatile RAM
Voltage-Supply:
4.75V ~ 5.5V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Surface Mount

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DS1211S+ information

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DS1211S+ Typical application Circuitry

DS1211S+

The DS1211S+ is a specialized integrated circuit designed by Maxim Integrated. It functions as a Nonvolatile Controller Chip (NVCC), ensuring data integrity for SRAM in the event of a power failure. The chip automatically switches between the external power supply and a backup energy source, typically a battery, to maintain data within the SRAM, making it invaluable in systems where data preservation is critical.

Key Features and Parameters:

- Automatic Switchover: Seamlessly switches SRAM power from the external supply to the backup battery during power failures.

- Write Protection: Prevents data corruption by disabling write operations during power switchover.

- Low electricity Consumption: Made with the intention of using the least amount of electricity possible, especially when running on backup batteries.

- Wide Operating Voltage Range: Accommodates a variety of SRAM and system power supply specifications.

- Compatibility: Designed to be used with standard SRAM, making it a versatile solution for nonvolatile memory applications.

Application Scenario: Implementing the DS1211S+ in a data logging system to ensure data collected from sensors is not lost in the event of a power failure.

Circuit Design:

Incorporating the DS1211S+ into a data logging system involves careful planning around its connections:

1. Power Supply Connection:

- VCC (typically Pin 26): Connect to the main power supply of the data logging system. A stable power supply is essential for the reliable operation of connected SRAM.

2. Backup Battery Connection:

- Vbat (typically Pin 20): Connect to a backup battery that will provide power in the event of a main power failure. Choosing an appropriate battery capacity is crucial for ensuring data retention during power outages.

3. SRAM Connection:

- Chip Enable (CE, typically Pin 22): Route this pin to the SRAM's chip enable input. The DS1211S+ will disable write operations to the SRAM when switching to backup power, protecting data integrity.

- Write Enable (WE, typically Pin 27): Connect to the SRAM's write enable input. The DS1211S+ controls this line to prevent data corruption during power transitions.

4. Ground Connection:

- GND (typically Pin 14): Connect to the system ground. A proper ground connection minimizes potential noise and ensures stable operation.

5. System Control:

- CEbar (typically Pin 28), OEbar (typically Pin 1): These pins are connected to the system's control lines for enabling and reading the SRAM. Proper control signal timing is necessary for efficient data access.

Design Considerations:

- Battery Selection and Maintenance: Choose a backup battery with sufficient capacity and a long shelf life. Monitoring battery health is also vital to ensure data preservation.

- Write Protection During Switchover: Ensure that the DS1211S+ correctly disables write operations during power loss to prevent data corruption.

- Power Supply Stability: Use decoupling capacitors near the VCC and Vbat pins to stabilize the power supply lines, reducing the risk of unintended SRAM write operations.

- Signal Integrity: Maintain short and direct paths for critical connections, especially for control signals to the SRAM, to minimize delay and interference.

- Testing for Power Fail Conditions: Thoroughly test the system under various power fail scenarios to verify that the DS1211S+ properly protects the SRAM data.

By integrating the DS1211S+ into a data logging system, designers can significantly enhance data reliability, ensuring that valuable data collected from sensors is preserved even in the event of unexpected power disruptions. This application demonstrates the DS1211S+'s critical role in maintaining data integrity, highlighting its utility in systems where data loss cannot be tolerated.

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6. What is the process for return or replacement of DS1211S+?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the DS1211S+ we delivered, we will accept the replacement or return of the DS1211S+ only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of DS1211S+.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations