DS1643-100+

Maxim DS1643-100 NVRAM
7,302 Effective Inventory

DS1643-100+

Effective Inventory7,302

Maxim DS1643-100 NVRAM

  • Manufacturer Part # : DS1643-100+

  • Package/Case: EDIP-28

  • Part Status : OBSOLETE

  • Brand: Analog Devices

  • Product Categories : Real Time Clocks

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Certification

We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

Shipping & Payment

Shipping & Payment

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Service & Packaging

Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

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Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]

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Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.

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DS1643-100+ DataSheet
no-price

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

Rapid Quote

Please submit RFQ for DS1643-100+ or email to us: Email: [email protected], we will contact you in 12 hours.

Details

In summary, DS1643-100+ is a cutting-edge RTC chip that offers superior performance and functionality for timekeeping and data storage applications. Its robust design, reliable operation, and versatile features make it an essential component for electronic devices that require accurate timekeeping and timestamp functionality. Whether used in consumer electronics, industrial systems, or automotive applications, this chip delivers consistent performance and dependable results. For designers and engineers seeking a high-quality RTC solution, DS1643-100+ is a top choice

Key Features

  • Integrated NV SRAM, real time clock, crystal, power-fail control circuit and lithium energy source
  • Clock registers are accessed identically to the static RAM. These registers are resident in the eight top RAM locations.
  • Totally nonvolatile with over 10 years of operation in the absence of power
  • Access times of 70 ns and 100 ns
  • BCD coded year, month, date, day, hours, minutes, and seconds with leap year compensation valid up to 2100
  • Power-fail write protection allows for ±10% VCC power supply tolerance
  • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
  • DS1643 only (DIP Module)
  • – Standard JEDEC byte-wide 8K x 8 RAM pinout DS1643P only (PowerCap Module Board)
  • – Surface mountable package for direct connection to PowerCap containing battery and crystal
  • – Replaceable battery (PowerCap)
  • – Power-fail output
  • – Pin-for-pin compatible with other densities of DS164XP Timekeeping RAM

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category ! Real Time Clock RoHS Details
Mounting Style Through Hole Package / Case EDIP-28
RTC Bus Interface Parallel Time Format ! HH:MM:SS
RTC Memory Size 8 kB Supply Voltage - Max 5.5 V
Supply Voltage - Min 4.5 V Minimum Operating Temperature 0 C
Maximum Operating Temperature ! + 70 C Brand Analog Devices / Maxim Integrated
Function Calendar, Clock, NV Timekeeping RAM Product Type ! Real Time Clocks
Series DS1643 Factory Pack Quantity 12
Subcategory Clock & Timer ICs Part # Aliases DS1643 90-16430+100

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification DS1643-100+ PDF Download

FAQs

What is DS1643-100+?

The DS1643-100+ is a non-volatile static RAM (NVSRAM) module manufactured by Maxim Integrated. It combines the features of a static RAM with non-volatile storage, providing data retention even when power is removed. This makes it suitable for applications requiring data backup and storage in the event of power loss.

How Does DS1643-100+ Work?

The DS1643-100+ works by utilizing a combination of volatile static RAM and non-volatile EEPROM (Electrically Erasable Programmable Read-Only Memory). It allows data to be read and written like a standard SRAM, while maintaining the ability to store data without a constant power source. When the module is powered, it operates as a regular fast SRAM, and when power is removed, the integral lithium energy source retains the data.

How Many Pins does DS1643-100+ have and What are the Functions of the Pinout Configuration?

The DS1643-100+ is housed in a 28-pin EDIP (Extended Dual-In-Line Package) module. The pinout configuration includes:

  • VCC: Positive power supply pin.
  • GND: Ground pin.
  • CE, OE, WE: Chip enable, output enable, and write enable control pins.
  • ADDR (A0-A16), DATA (DQ0-DQ14): Address and data input/output pins.
  • VBAT: Backup battery input pin.
  • NC: No-connect pin.

What are the Pros and Cons of DS1643-100+?

Pros:

  • Non-Volatile Data Storage: Retains data without power, providing data backup functionality.
  • Fast Access Time: Operates as a fast SRAM with rapid data access and storage.
  • Simple Integration: Compatible with standard SRAM interfaces, making it easy to integrate into existing designs.
  • Reliable Data Retention: Ensures long-term data storage and backup in critical applications.

Cons:

  • Complex Control: Requires careful consideration of control signals for proper operation and data retention.
  • Cost: NVSRAM modules may have a higher cost compared to standard SRAM due to non-volatile memory components.

Are There Any Equivalents/Alternatives to DS1643-100+ for Recommendation?

Alternatives to the DS1643-100+ include the FM18W08 from Fujitsu and the CY14B101P from Cypress Semiconductor, which are also non-volatile SRAM modules with similar functionality.

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