X1227

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, 1.75s, off) Battery Switch or Super Cap Input 4K x 8 Bits of EEPROM — 64-Byte Page Write Mode — 8 modes of Block Lock™ Protection — Single Byte Write Capability High Reliability — 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-Lead SOIC and 8-Lead TSSOP 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 Othe...