DS1673S-5+

The DS1673S-5+ from Analog Devices / Maxim Integrated is a versatile portable system controller designed for low-power applications. This integrated circuit combines several essential functions into a single chip, including a real-time clock (RTC) with leap year compensation, an NV RAM controller for automatic backup and write protection, and a microprocessor monitor that halts and restarts the processor during power failures. It also features a 3-channel, 8-bit analog-to-digital converter (ADC).

Communication with the DS1673S-5+ is facilitated through a simple 3-wire serial interface. The device supports a voltage range of 2.5V to 3.7V and operates within a temperature range of 0°C to 70°C. Its compact 20-SOIC package makes it suitable for surface-mount applications where space is a constraint.

Key features include an alarm interrupt for waking up systems and watchdog timer functionality. The RTC counts seconds, minutes, hours, day, date, month, and year, with validity up to 2100. The microprocessor monitor ensures system stability by managing power transitions and external reset conditions.

This component is ideal for portable electronic devices requiring precise timekeeping, power management, and system control. Its integrated ADC can be used for monitoring various analog inputs within the system.