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BQ3285 Clock Datasheet PDF

Real-Time Clock

Real-Time Clock

 

 

 

Part Number BQ3285
Description Real-Time Clock
Feature bq3285 Real-Time Clock (RTC) Features Direct clock/calendar replacement for IBM® AT-compatible computers and othe r applications ® Functionally compatib le with the DS1285 - Closely matches MC 146818A pin configuration ® 114 bytes of general nonvolatile storage ® 160ns cycle time allows fast bus operation Selectable Intel or Motorola bus timi ng ® Less than 0.
5µA load under batte ry operation ® 14 bytes for clock/cale ndar and control ® BCD or binary forma t for clock and calendar data ® Calen dar in day of the week, day of the mont h, months, and years, with automatic le ap-year adjustment ® Time .
Manufacture UNITRODE
Datasheet
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BQ3285

 

 

 


 

 

 

Part Number BQ3285L
Description Real-Time Clock
Feature bq3285E/L Real-Time Clock (RTC) Featur es ® Direct clock/calendar replacement for IBM® AT-compatible computers and other applications ® Functionally comp atible with the DS1285 - Closely matche s MC146818A pin configuration ® 2.
7– 3.
6V operation (bq3285L); 4.
5–5.
5V op eration (bq3285E) ® 242 bytes of gener al nonvolatile storage ® 32.
768kHz out put for power management ® System wake -up capability— alarm interrupt outpu t active in battery-backup mode ® Less than 0.
5µA load under battery operati on ® Selectable Intel or Motorola bus timing ® 14 bytes for clock/calendar a nd control ® BCD or binary for .
Manufacture UNITRODE
Datasheet
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BQ3285L

 

 

 


 

 

 

Part Number BQ3285E
Description Real-Time Clock
Feature bq3285E/L Real-Time Clock (RTC) Featur es ® Direct clock/calendar replacement for IBM® AT-compatible computers and other applications ® Functionally comp atible with the DS1285 - Closely matche s MC146818A pin configuration ® 2.
7– 3.
6V operation (bq3285L); 4.
5–5.
5V op eration (bq3285E) ® 242 bytes of gener al nonvolatile storage ® 32.
768kHz out put for power management ® System wake -up capability— alarm interrupt outpu t active in battery-backup mode ® Less than 0.
5µA load under battery operati on ® Selectable Intel or Motorola bus timing ® 14 bytes for clock/calendar a nd control ® BCD or binary for .
Manufacture UNITRODE
Datasheet
Download BQ3285E Datasheet

BQ3285E

 

 

 

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