DS1384

看门狗实时时钟控制器

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Real-time clock/calendar: tracks hundredths of seconds, seconds, minutes, hours, days, date, months, years, and leap years
Accuracy >±2 minutes/month at 25°C
Watchdog timer monitors/restarts processor
Programmable time-of-day and real-time watchdog alarms
Interrupt outputs active during battery backup mode
Controller circuitry supports up to 128k x 8 external SRAM
All registers individually addressed through bytewide interface
50 bytes of user NV RAM
Low-power CMOS circuitry: <1µA battery current in standby mode
Square wave outputs
Operating range: 0°C to +70°C
Voltage/power-fail tolerance: 5V ±10%

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