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X1227 - RTC Real TimeClock/Calendar/ CPU Supervisor

General 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.

Key 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.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
X1227 Real Time Clock/Calendar/CPU Supervisor with EEPROM Xicor
X1226 Real Time Clock/Calendar with EEPROM Xicor
X1228 Real Time Clock/Calendar/CPU Supervisor with EEPROM Xicor
X1205 Real Time Clock/Calendar Xicor
X1240 Real Time Clock/Calendar with EEPROM Xicor

Other Datasheets by Intersil (now Renesas)

Part Number Description
X1226 Real Time Clock/Calendar
X1228 Real Time Clock/Calendar/CPU Supervisor
X1286 Intersil Real Time Clock/Calendar/CPU Supervisor with EEPROM X1286
X1288 RTC Real Time Clock/Calendar/CPU Supervisor

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
® 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.