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X1227

Intersil Corporation
Part Number X1227
Manufacturer Intersil Corporation
Description RTC Real TimeClock/Calendar/ CPU Supervisor
Published May 28, 2007
Detailed Description ® 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 ...
Datasheet PDF File X1227 PDF File

X1227
X1227


Overview
® 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.
75s, off) • Battery Switch or Super Cap Input • 512 x 8 Bits of EEPROM — 64-Byte Page Write Mode — 8 Modes of Block Lock™ Protection — Single Byte Write Capability • High Reliability www.
DataSheet4U.
com — Data Retention: 100 Years — Endurance: 100,000 Cycles Per Byte • 2-Wire™ Interface Interoperable with I2C* — 400kHz Data Transfer Rate • Low Power CMOS — 1.
25µA Operating Current (Typical) • Small Package Options — 8 Ld SOIC and 8 Ld TSSOP • Repetitive Alarms • Temperature Compensation • Pb-Free Plus Anneal Available (RoHS Compliant) APPLICATIONS • • • • • • • • • • • • • • • Utility Meters HVAC Equipment Audio/Video Components Set Top Box/Television Modems Network Routers, Hubs, Switches, Bridges Cellular Infrastructure Equipment Fixed Broadband Wireless Equipment Pagers/PDA POS Equipment Test Meters/Fixtures Office Automation (Copiers, Fax) Home Appliances Computer Products Other Industrial/Medical/Automotive 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.
All compensation and trim components are integrated on the chip.
This elim...


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