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DS1251 Datasheet (PDF) - Dallas Semiconductor

DS1251 Datasheet PDF - Dallas Semiconductor
Part # DS1251
Download  DS1251 Download

File Size   291.94 Kbytes
Page   22 Pages
Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor
Description 4096k NV SRAM with Phantom Clock

DS1251 Datasheet (PDF)

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DS1251 Datasheet PDF - Dallas Semiconductor

Part # DS1251
Download  DS1251 Click to download

File Size   291.94 Kbytes
Page   22 Pages
Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor
Description 4096k NV SRAM with Phantom Clock

DS1251 Datasheet (HTML) - Dallas Semiconductor

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DS1251 Product details

DESCRIPTION
The DS1251 4096K NV SRAM with Phantom Clock is a fully static nonvolatile RAM (organized as 512K words by 8 bits) with a built–in real time clock. The DS1251Y has a self–contained lithium energy source and control circuitry which constantly monitors VCC for an out–of–tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent garbled data in both the memory and real time clock.

FEATURES
◾ Real time clock keeps track of hundredths of seconds, minutes, hours, days, date of the month, months, and years
◾ 512K x 8 NV SRAM directly replaces volatile static RAM or EEPROM
◾ Embedded lithium energy cell maintains calendar operation and retains RAM data
◾ Watch function is transparent to RAM operation
◾ Month and year determine the number of days in each month; valid up to 2100
◾ Over 10 years of data retention in the absence of power
◾ Full 10% operating range
◾ Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
◾ DIP Module only
    – Standard 32–pin JEDEC pinout
    – Upward comparable with the DS1248
◾ PowerCap Module Board only
    – Surface mountable package for direct connection to PowerCap containing battery and crystal
    – Replaceable battery (PowerCap)
    – Pin for pin compatible with other densities of DS124XP Phantom Clocks




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About Dallas Semiconductor


Dallas Semiconductor was an American company that was founded in 1984 and was a supplier of mixed-signal and digital semiconductors.
The company was headquartered in Dallas, Texas, and was known for its innovative products and technology in the field of real-time clocks, temperature sensors, and other integrated circuits.
In 2002, Dallas Semiconductor was acquired by Maxim Integrated, a multinational semiconductor company, and became a subsidiary of Maxim.
The Dallas Semiconductor brand is no longer in use, but its products and technology continue to be a part of Maxim's portfolio.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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