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X1227 - Real Time Clock/Calendar/CPU Supervisor with EEPROM

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

  • Repetitive Alarms & Temperature Compensation 4K (512 x 8) X1227.

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Datasheet preview – X1227

Datasheet Details

Part number X1227
Manufacturer Xicor
File Size 442.33 KB
Description Real Time Clock/Calendar/CPU Supervisor with EEPROM
Datasheet download datasheet X1227 Datasheet
Additional preview pages of the X1227 datasheet.

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Full PDF Text Transcription

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New Features Repetitive Alarms & Temperature Compensation 4K (512 x 8) X1227 APPLICATIONS • • • • • • • • • • • • • • • 2-Wire™ RTC Real Time Clock/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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