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X1227 - RTC Real TimeClock/Calendar/ CPU Supervisor

Datasheet Summary

Description

The X1227 device is a Real Time Clock with clock/calendar, two polled alarms with integrated 512x8 EEPROM, oscillator compensation, CPU Supervisor (POR/LVS and WDT) and battery backup switch.

The oscillator uses an external, low-cost 32.768kHz crystal.

Features

  • Real Time Clock/Calendar.
  • Tracks Time in Hours, Minutes, and Seconds.
  • Day of the Week, Day, Month, and Year.
  • 2 Polled Alarms (Non-volatile).
  • Settable on the Second, Minute, Hour, Day of the Week, Day, or Month.
  • Repeat Mode (periodic interrupts).
  • Oscillator Compensation on Chip.
  • Internal Feedback Resistor and Compensation Capacitors.
  • 64 Position Digitally Controlled Trim Capacitor.
  • 6 Digital Frequency Adjus.

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Datasheet preview – X1227

Datasheet Details

Part number X1227
Manufacturer Intersil Corporation
File Size 431.45 KB
Description RTC Real TimeClock/Calendar/ CPU Supervisor
Datasheet download datasheet X1227 Datasheet
Additional preview pages of the X1227 datasheet.

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Full PDF Text Transcription

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® D FO NDE E M S OM RE C SI G N NOT NEW DE 2027 I SL 1 Data Sheet SEE R X1227 May 8, 2006 FN8099.2 2-Wire™ RTC Real TimeClock/Calendar/ CPU Supervisor with EEPROM FEATURES • Real Time Clock/Calendar — Tracks Time in Hours, Minutes, and Seconds — Day of the Week, Day, Month, and Year • 2 Polled Alarms (Non-volatile) — Settable on the Second, Minute, Hour, Day of the Week, Day, or Month — Repeat Mode (periodic interrupts) • Oscillator Compensation on Chip — Internal Feedback Resistor and Compensation Capacitors — 64 Position Digitally Controlled Trim Capacitor — 6 Digital Frequency Adjustment Settings to ±30ppm • CPU Supervisor Functions — Power-On Reset, Low Voltage Sense — Watchdog Timer (SW Selectable: 0.25s, 0.75s, 1.
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