DP8570A Datasheet PDF (Timer Clock Peripheral (TCP)) | Download National Semiconductor DP8570A

DP8570A - Timer Clock Peripheral (TCP)

Description

The DP8570A 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 environment

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 Two 16-bit timers 10 MHz external clock frequency Programmable multi-function output Flexible re-trigger facilities 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.

Datasheet Details

Part number	DP8570A
Manufacturer	National Semiconductor
File Size	381.74 KB
Description	Timer Clock Peripheral (TCP)
Datasheet	DP8570A Datasheet
Additional preview pages of the DP8570A datasheet.

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Full PDF Text Transcription

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DP8570A Timer Clock Peripheral (TCP) May 1993 DP8570A Timer Clock Peripheral (TCP) General Description The DP8570A 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 the Timers and their data RAM and the Time Save RAM Any of the RAM locations that are not being used for their intended purpose may be used as gen

Published: Nov 23, 2005 |