MSM6542-01 Overview
The MSM6542 is a perpetual-calendar-based real time clock with an alarm function which can read and write data in units of seconds. It can be connected to various buses and can function as a peripheral IC of a microputer. The clock ranges are seconds, minutes, hours, days, months, years, and days of the week.
MSM6542-01 Key Features
- Real time clock providing seconds, minutes, hours, days, months, years, and days of the week
- Multiple alarm ranges covering seconds, minutes, hours, days, months, and days of the week. A desired alarm range can be
- A periodic interrupt output interval can be selected over a wide range from 1/1024 seconds up to 10 minutes
- Interface flexibility allows for connection to many types of microprocessors
- Single read-out procedure (Read flag)
- Single power sense circuitry. (Data protect function)
- Unused registers can be used as RAM
- 30-second adjustment by software or hardware (software only for the MSM65421/-2)
- Stop and restart of clock by software or hardware (software only for the MSM65421/-2). 68
- 1 Hz output for adjustment and check of oscillation frequency (MSM6542-3 only)