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DS1321

Name: DS1321
Brand: MAXIM
SKU: JT24-DS1321
Price: 0.0001 USD
Availability: InStock
Rating: 5 (1 reviews)

Flexible Nonvolatile Controller with Lithium Battery Monitor

Manufacturer :	Maxim Integrated
Package/Case :	PDIP-16
Product Categories :	Memory - Controllers
Datasheet:	DS1321 Datasheet (PDF)
RoHs Status:	Lead free/RoHS Compliant
In-stock:	208

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DS1321 Product Details

The DS1321 Flexible Nonvolatile Controller with Lithium Battery Monitor is a CMOS circuit which solves the application problem of converting CMOS SRAMs into nonvolatile memory. Incoming power is monitored for an out-of-tolerance condition. When such a condition is detected, chip enable outputs are inhibited to accomplish write protection and the battery is switched on to supply the SRAMs with uninterrupted power. Special circuitry uses a low-leakage CMOS process which affords precise voltage detection at extremely low battery consumption. One DS1321 can support as many as four SRAMs arranged in any of three memory configurations. In addition to battery-backup support, the DS1321 performs the important function of monitoring the remaining capacity of the lithium battery and providing a warning before the battery reaches end-of-life. Because the open-circuit voltage of a lithium backup battery remains relatively constant over the majority of its life, accurate battery monitoring requires loaded-battery voltage measurement. The DS1321 performs such measurement by periodically comparing the voltage of the battery as it supports an internal resistive load with a carefully selected reference voltage. If the battery voltage falls below the reference voltage under such conditions, the battery will soon reach end-of-life. As a result, the Battery Warning pin is activated to signal the need for battery replacement.

Feature

Converts CMOS SRAM into nonvolatile memory
Unconditionally write-protects SRAM when V_CC is out of tolerance
Automatically switches to battery backup supply when V_CC power failure occurs
Flexible memory organization
- Mode 0: 4 banks with 1 SRAM each
- Mode 1: 2 banks with 2 SRAMs each
- Mode 2: 1 bank with 4 SRAMs each
Monitors voltage of a lithium cell and provides advanced warning of impending battery failure
Signals low-battery condition on active low Battery Warning output signal
Resets processor when power failure occurs and holds processor in reset during system power-up
Optional 5% or 10% power-fail detection
16-pin PDIP, 16-pin SO and 20-pin TSSOP packages
Industrial temperature range of -40°C to +85°C

DS1321 Block Diagram
(Picture: Diagram)

Technical Parameters

Memory Type
Nonvolatile SRAM
Battery Backup Switching
Yes
Supply Voltage Max
5.5 V
Supply Voltage Min
4.75 V
Operating Current
50 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
Through Hole
Package / Case
PDIP-16
Packaging
Tube
Description/Function
Converts Full CMOS SRAMs into Nonvolatile Memories
Lithium Battery Monitor
Yes
Series
DS1321
Type
Non-Volatile SRAM (NVSRAM)
Part # Aliases
90-13210-000

DS1321 Datasheet

DS1321 data sheet for guidance

Download

DS1321 Related Products

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Estimated Delivery Time: Dec 08 - Dec 13 days (choose Expedited at checkout).

Shipping & Payment

Shipping

Shipping Type
Ship Fee
Lead Time
DHL
$20.00-$40.00 (0.50 KG)
2-5 days
Fedex
$20.00-$40.00 (0.50 KG)
3-7 days
UPS
$20.00-$45.00 (0.50 KG)
2-5 days
TNT
$25.00-$65.00 (0.50 KG)
2-5 days
EMS
$25.00-$45.00 (0.50 KG)
5-14 days
REGISTERED AIR MAIL
$2.00-$3.00 (0.10 KG)
7-30 days

Processing Time：Shipping fee depend on different zone and country.

Payment

Terms of payment
Hand Fee
Payment Site
Wire Transfer
charge US$30.00 banking fee.
Paypal
charge 4.0% service fee.
https://www.paypal.com/
Credit Card
charge 3.5% service fee.
Western Union
charge US$0.00 banking fee.
https://www.westernunion.com/
Money Gram
charge US$0.00 banking fee.
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We provide high quality products, thoughtful service and after sale guarantee

We have rich products, can meet your various needs.
Minimum order quantity starts from 1pcs.
Lowest international shipping fee starts from US$2.00.
90 days quality guarantee for all products.

Packing

Step1: Products
Step2: Vacuum Packaging
Step3: Anti-Static Bag
Step4: Individual Packaging
Step5: Packaging Boxes
Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Guarantees

1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

FAQ:

Q: How does Jotrin guarantee that DS1321 is the original manufacturer or agent of MAXIM?: We have a professional business development department to strictly test and verify the qualifications of MAXIM original manufacturers and agents. All MAXIM suppliers must pass the qualification review before they can publish their DS1321 devices; we pay more attention to the channels and quality of DS1321 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of DS1321 chips? Including MAXIM original factory information, Memory - Controllers application, DS1321 pictures?: You can use Jotrin's intelligent search engine, or filter by Non-Volatile RAM Controllers category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's DS1321 price and stock displayed on the platform accurate?: The MAXIM's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for DS1321, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?: Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?: TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?: Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of DS1321?: 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 DS1321 we delivered, we will accept the replacement or return of the DS1321 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 DS1321.
(3)The DS1321 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
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as DS1321 datasheet pdf, DS1321 pin diagram?: Need any After-Sales service, please feel free contact us: sales@jotrin.com

Maxim Integrated

Maxim Integrated Products is a global range of linearity, mixed-signal integrated circuits (IC) design, R & D and manufacturing leader, has designed, developed, and manufactured analog, mixed-signal, high-frequency, and digital circuits that enable all four of these key interactions....

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