X1288

® X1288 Data Sheet April 14, 2006 FN8102.3 2-Wire™ RTC Real Time Clock/Calendar/CPU Supervisor with EEPROM FEATURES Real Time Clock/Calendar — Tracks time in Hours, Minutes, Seconds and Hundredths of a Second — 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 setting 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 32K x 8 Bits of EEPROM www.DataSheet4U.com — 128-Byte Page Write Mode — 8 modes of Block Lock™ Protection — Single Byte Write Capability 2-Wire™ Interface interoperable with I2C* — 400kHz data transfer rate Frequency Output (SW Selectable: Off, 1Hz, 100Hz, or 32.768kHz) Low Power CMOS — 1.25µA Operating Current (Typical) Small Package Options — 16-Lead SOIC and 14-Lead TSSOP 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) Hom...