DESCRIPTION

The MSM 58321 is a metal gate CMOS Real Time Clock/Calendar with a battery backup function for use in bus-oriented microprocessor applications.

FEATURES

• 7 Function-Second, Minute, Hour, Day, Day-of-Week, Month, Year

• Automatic leap year calender

• 12/24 hour format

• Frequency divider 5-poststage reset

• Reference signal output

• 32.768 kHz crystal controlled operation

• Single 5V power supply

• Back-up battery operation to VDD = 2.2V

• Low power dissipation

90 µW max. at VDD = 3V

2.5 mW max. at VDD = 5V

• 16 pin plastic DIP (DIP 16-P-300)