Products > Integrated Circuits (ICs) > Clock & Timer ICs > DS1643-100

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DS1643-100

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Real Time Clock Parallel 8KByte

Manufacturer : MAXIM/DALLAS
Package/Case : DIP28
Product Categories : Clock/Timing - Real Time Clocks
Datasheet: DS1643-100 Datasheet (PDF)
RoHs Status: Lead free / RoHS Compliant
In-stock: 1913

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DS1643-100 Product Details


The DS1643-100 is a 8K x 8 nonvolatile static RAM with a full function Real Time Clock (RTC) which are both accessible in a byte-wide format. The nonvolatile timekeeping RAM is functionally equivalent to any JEDEC standard 8K x 8 SRAM. The device can also be easily substituted in ROM, EPROM and EEPROM sockets providing read/write nonvolatility and the addition of the real time clock function.

DS1643-100

Feature


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

DS1643-100 Products

Technical Parameters

  • Function
  • Clock, Calendar, NV Timekeeping RAM
  • RTC Bus Interface
  • Parallel
  • Time Format
  • HH:MM:SS
  • RTC Memory Size
  • 8192 B
  • Supply Voltage Max
  • 5.5 V
  • Supply Voltage Min
  • 4.5 V
  • Maximum Operating Temperature
  • + 70 C
  • Minimum Operating Temperature
  • 0 C
  • Mounting Style
  • Through Hole
  • Package / Case
  • eDIP
  • Packaging
  • Bulk
  • Series
  • DS1643
  • Part # Aliases
  • 90-16430-100

DS1643-100 Equivalent Parts

For the DS1643-100 component, you may consider these replacement and alternative parts.

Models Manufacturer Package/Case Description
DS1743W-100+
DS1243Y-100+
DS1287A-100

DS1643-100 Related Products

Ratings and Reviews (1)

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  • **THON***
    2020-03-28

    Top Ware, super schneller Versand. 4x5 Sterne. Bis zum nächsten mal, Danke+++

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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.

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Q: How does Jotrin guarantee that DS1643-100 is the original manufacturer or agent of MAXIM/DALLAS?
We have a professional business development department to strictly test and verify the qualifications of MAXIM/DALLAS original manufacturers and agents. All MAXIM/DALLAS suppliers must pass the qualification review before they can publish their DS1643-100 devices; we pay more attention to the channels and quality of DS1643-100 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of DS1643-100 chips? Including MAXIM/DALLAS original factory information, Clock/Timing - Real Time Clocks application, DS1643-100 pictures?
You can use Jotrin's intelligent search engine, or filter by EPROM category, or find it through MAXIM/DALLAS brand manufacturer page.
Q: Are the MAXIM/DALLAS's DS1643-100 price and stock displayed on the platform accurate?
The MAXIM/DALLAS's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for DS1643-100, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Q: What is the process for returns or replacement of DS1643-100?
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 DS1643100 we delivered, we will accept the replacement or return of the DS1643-100 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 DS1643-100.
(3)The DS1643-100 is unused and only in the original unpacked packaging.
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More details about return electronic components please see our Return & Change Policy.
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