|Manufacturer :||Maxim Integrated|
|Product Categories :||Memory - Controllers|
|Datasheet:||DS1216E Datasheet (PDF)|
|RoHs Status:||Lead free / RoHS Compliant|
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DS1216E Product Details
Keeps track of hundredths of seconds, seconds, minutes, hours, days, date of the month, months, and years
Converts standard 2k x 8 up to 512k x 8 CMOS static RAMs into nonvolatile memory
Embedded lithium energy cell maintains watch information and retains RAM data
Watch function is transparent to RAM operation
Month and year determine the number of days in each month; leap-year compensation valid up to 2100
Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
Proven gas-tight socket contacts
Full 10% operating range
Operating temperature range: 0C to +70C
Accuracy is better than 1 minute/month @ +25C
DS1216B, DS1216C, DS1216D, DS1216E, DS1216F, DS1216H (See Figure 2 for letter suffix marking identification.)
RST - RESET
DQ0 - Data Input/Output 0 [RAM]
A2 - Address Bit 2 (Read/Write [ROM])
A0 - Address Bit 0 (Data Input [ROM])
GND - Ground CE - Conditioned Chip Enable
OE - Output Enable
WE - Write Enable
Vcc - Switched VCC for 28-/32-Pin RAM
VCCB - Switched VCC for 24-Pin RAM
VCCD - Switched VCC for 28-Ppin RAM
The DS1216 SmartWatch RAM and SmartWatch ROM Sockets are 600mil-wide DIP sockets with a built-in CMOS watch function, an NV RAM controller circuit, and an embedded lithium energy source. The sockets provide an NV RAM solution for memory sized from 2k x 8 to 512k x 8 with package sizes from 26 pins to 32 pins. When a socket is mated with a CMOS SRAM, it provides a complete solution to problems associated with memory volatility and uses a common energy source to maintain time and date. The SmartWatch ROM sockets use the embedded lithium source to maintain the time and date only. A key feature of the SmartWatch is that the watch function remains transparent to the RAM. The SmartWatch monitors VCC for an out-of-tolerance condition. When such a condition occurs, an internal lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent loss of watch and RAM data.
Using the SmartWatch saves PC board space since the combination of SmartWatch and the mated RAM take up no more area than the memory alone. The SmartWatch uses the VCC, data I/O 0, CE , OE , and WE for RAM and watch control. All other pins are passed straight through to the socket receptacle.
The SmartWatch provides timekeeping information including hundredths of seconds, seconds, minutes, hours, days, date, months, and years. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap years. The SmartWatch operates in either 24-hour or 12-hour format with an AM/PM indicator.
- Memory Type
- Smartwatch ROM
- Battery Backup Switching
- Supply Voltage Max
- 5.5 V
- Supply Voltage Min
- 4.5 V
- Operating Current
- 5 mA
- Maximum Operating Temperature
- + 70 C
- Minimum Operating Temperature
- 0 C
- Mounting Style
- Through Hole
- Package / Case
- Watch function remains transparent to the RAM
- Lithium Battery Monitor
- SmartWatch ROM
- Part # Aliases
DS1216E Related Products
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Estimated Delivery Time: Apr 06 - Apr 11 days (choose Expedited at checkout).
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- Lead Time
- $20.00-$40.00 (0.50 KG)
- 2-5 days
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- 3-7 days
- $20.00-$45.00 (0.50 KG)
- 2-5 days
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- 5-14 days
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- $2.00-$3.00 (0.10 KG)
- 7-30 days
Processing Time：Shipping fee depend on different zone and country.
- Terms of payment
- Hand Fee
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- charge US$30.00 banking fee.
- charge 4.0% service fee.
- Credit Card
- charge 3.5% service fee.
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- charge US$0.00 banking fee.
- Money Gram
- charge US$0.00 banking fee.
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.
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.
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.
- Q: How does Jotrin guarantee that DS1216E 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 DS1216E devices; we pay more attention to the channels and quality of DS1216E products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
- Q: How to find the detailed information of DS1216E chips? Including MAXIM original factory information, Memory - Controllers application, DS1216E pictures?
- You can use Jotrin's intelligent search engine, or filter by Memory - Controllers category, or find it through Maxim Integrated Information page.
- Q: Are the MAXIM's DS1216E 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 DS1216E, 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 DS1216E?
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 DS1216E we delivered, we will accept the replacement or return of the DS1216E 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 DS1216E.
(3)The DS1216E 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 DS1216E datasheet pdf, DS1216E pin diagram?
- Need any After-Sales service, please feel free contact us: email@example.com
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