com DS1680 Portable System Controller with Touch-Screen Control www.
maxim-ic.
com FEATURES § Real-time clock (RTC) − Counts seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation valid up to 2100 − Power control circuitry supports system power-on from day/time alarm Microprocessor monitor − Halts microprocessor during power- fail − Automatically restarts microprocessor after power failure − Monitors pushbutton for external override − Halts and resets an out of control microprocessor NV RAM control − Automatic battery backup and write protection to external SRAM 1.
25V threshold detector for power- fail warning 10-bit analog-to-digital conv...

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