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DP8572A - Real Time Clock (RTC)

Description

The DP8572A (8572AM militarized version) is intended for use in microprocessor based systems where information is required for multi-tasking data logging or general time of day date information This device is implemented in low voltage silicon gate microCMOS technology to provide low standby power i

Features

  • Y Y Y Y Y Y Full function real time clock calendar 12 24 hour mode timekeeping Day of week and day of years counters Four selectable oscillator frequencies Parallel resonant oscillator Power fail features Internal power supply switch to external battery Power Supply Bus glitch protection Automatic log of time into RAM at power failure On-chip interrupt structure Periodic alarm and power fail interrupts Up to 44 bytes of CMOS RAM MIL-STD-883C compliant SMD 5962-91641-01MJX (future) Block Dia.

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DP8572A DP8572AM Real Time Clock (RTC) May 1993 DP8572A DP8572AM Real Time Clock (RTC) General Description The DP8572A (8572AM militarized version) is intended for use in microprocessor based systems where information is required for multi-tasking data logging or general time of day date information This device is implemented in low voltage silicon gate microCMOS technology to provide low standby power in battery back-up environments The circuit’s architecture is such that it looks like a contiguous block of memory or I O ports The address space is organized as 2 software selectable pages of 32 bytes This includes the Control Registers the Clock Counters the Alarm Compare RAM and the Time Save RAM Any of the RAM locations that are not being used for their intended purpose may be used as
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