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DS1746

Part Number	DS1746
Manufacturer	Dallas
Description	Y2K-Compliant / Nonvolatile Timekeeping RAMs
Published	Aug 15, 2005
Detailed Description	DS1746/DS1746P Y2KC Nonvolatile Timekeeping RAM www.dalsemi.com FEATURES Integrated NV SRAM, real time clock, crystal, ...
Datasheet	DS1746 PDF File

Overview

DS1746/DS1746P Y2KC Nonvolatile Timekeeping RAM www.
dalsemi.
com FEATURES Integrated NV SRAM, real time clock, crystal, power-fail control circuit and lithium energy source Clock registers are accessed identical to the static RAM.
These registers are resident in the eight top RAM locations.
Century byte register; ie.
, Y2K compliant Totally nonvolatile with over 10 years of operation in the absence of power BCD coded century, year, month, date, day, hours, minutes, and seconds with automatic leap year compensation valid up to the year 2100 Battery voltage level indicator flag 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 DIP Module only - Standard JEDEC bytewide 128k x 8 static RAM pinout PowerCap Module Board only - Surface mountable package for direct connection to PowerCap containing battery and crystal - Replaceable battery (PowerCap) - Power-On ...

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