X1228 Datasheet Text
New Features
Repetitive Alarms & Temperature pensation
4K (512 x 8)
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 pensation on chip
- Internal feedback resistor and pensation 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-
- 400kHz data transfer rate
- Frequency Output (SW Selectable: Off, 1Hz, 4096Hz, or 32.768kHz)...
