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The MM58169AA/N is a real-time clock (RTC) integrated circuit manufactured by National Semiconductor (NS).

Specifications:

• Manufacturer: National Semiconductor (NS)
• Type: Real-Time Clock (RTC)
• Package: DIP (Dual In-line Package)
• Interface: Parallel
• Clock Accuracy: Typically ±2 minutes per month at 25°C
• Operating Voltage: 4.5V to 6.5V
• Current Consumption: Low power (typically 1mA in active mode)
• Timekeeping Functions: Seconds, minutes, hours, day, date, month, year
• Leap Year Compensation: Automatic
• Temperature Range: Commercial (0°C to +70°C)

Descriptions:

The MM58169AA/N is a CMOS real-time clock IC designed for timekeeping applications. It provides accurate time and date information with minimal external components. It includes features such as automatic leap year adjustment and 12/24-hour time format support.

Features:

• Parallel Data Interface for easy integration with microprocessors
• Low Power Consumption for battery-backed applications
• Automatic Leap Year Compensation up to the year 2099
• 12/24-Hour Time Format selectable
• Daylight Saving Time adjustment capability
• Built-in Oscillator Circuit (requires an external 32.768 kHz crystal)
• Battery Backup Support for continuous timekeeping during power loss

This IC is commonly used in digital clocks, embedded systems, and other applications requiring precise timekeeping.