Xicor X1228
the X1228 to supply a timebase for the real time clock. The recommended crystal is a Citizen CFS206-32.768KDZF.FEATURES
Repetitive Alarms & Temperature Compensation 4K (512 x 8) X1228 2-Wire™ RTC Real Time Clock/Calendar/CPU Supervisor with EEPROMFEATURES
● 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 — Data Retention: 100 years — Endurance: 100,000 cycles per byte
● 2-Wire™ Interface interoperable with I2C* — 400...