LV8573A - National Semiconductor

LV8573A LV8573A Low Voltage Real Time Clock (RTC)

The LV8573A 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 co.

Features

Y Y Y Y 3 3V g 10% supply Full function real time clock calendar 12 24 hour mode timekeeping Day of week counter 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 Block Diagram TL F 11418
  – 1 FIGURE 1 TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 11418 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Notes 1 2.