DP8572A - Real Time Clock (RTC)

Product Overview

National Semiconductor

Datasheet Details

Part number	DP8572A
Manufacturer	National Semiconductor
File Size	368.00 KB
Description	Real Time Clock (RTC)
Datasheet	DP8572A Datasheet
Additional preview pages of the DP8572A datasheet.

Product details

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

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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Published: Nov 23, 2005 |