X1227

® 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...