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bq3285L

UNITRODE
Part Number bq3285L
Manufacturer UNITRODE
Description Real-Time Clock
Published May 30, 2019
Detailed Description bq3285E/L Real-Time Clock (RTC) Features ® Direct clock/calendar replacement for IBM® AT-compatible computers and othe...
Datasheet PDF File bq3285L PDF File

bq3285L
bq3285L

Overview
bq3285E/L Real-Time Clock (RTC) Features ® Direct clock/calendar replacement for IBM® AT-compatible computers and other applications ® Functionally compatible with the DS1285 - Closely matches MC146818A pin configuration ® 2.
7–3.
6V operation (bq3285L); 4.
5–5.
5V operation (bq3285E) ® 242 bytes of general nonvolatile storage ® 32.
768kHz output for power management ® System wake-up capability— alarm interrupt output active in battery-backup mode ® Less than 0.
5µA load under battery operation ® Selectable Intel or Motorola bus timing ® 14 bytes for clock/calendar and control ® BCD or binary format for clock and calendar data ® Calendar in day of the week, day of the month, months, and years, with automatic leap-year adjustment ® Time of day in seconds, minutes, and hours - 12- or 24-hour format - Optional daylight saving adjustment ® Programmable square wave output ® Three individually maskable interrupt event flags: - Periodic rates from 122µs to 500ms - Time-of-...


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