The DS1337S from Maxim Integrated is a serial real-time clock (RTC) device that provides a full binary-coded decimal (BCD) clock/calendar with 56 bytes of NV SRAM. Address and data are transferred serially via a two-wire, bi-directional I²C interface. This high-performance RTC offers precision timekeeping with minimal power consumption, making it ideal for a wide range of applications in consumer electronics, office automation, and industrial control systems.

Key Features

• Accurate Timekeeping: The DS1337S maintains seconds, minutes, hours, day, date, month, and year information with leap year compensation up to the year 2100.
• Low Power Consumption: Its design ensures low power consumption, which helps in extending the life of battery-powered devices.
• Two Time-of-Day Alarms: The device features two programmable time-of-day alarms, increasing its versatility for time-dependent applications.
• 56-Byte, Battery-Backed, Nonvolatile (NV) RAM: Users can store data that must be preserved in the event of a power loss, enhancing data security and integrity.
• Simple Integration: The I²C interface facilitates simple integration into existing systems with minimal additional components required.
• Compact Size: Available in a surface-mount package, the DS1337S is designed to occupy minimal board space, which is crucial for space-constrained applications.

Applications

The DS1337S is suitable for a broad array of applications, including:

• Handheld devices
• GPS receivers
• Telematics
• Industrial control systems
• Office electronic equipment
• Consumer electronics

Technical Specifications

The device operates over a wide temperature range and is available in a compact, 8-pin SO package. It is fully accessible through the I²C interface, which operates at clock speeds up to 400kHz. The DS1337S also features an oscillator stop flag, which indicates if the oscillator is or has been stopped, and a programmable square-wave output that can be set to one of four frequencies. With its robust feature set and Maxim Integrated's reputation for quality, the DS1337S is a reliable choice for designers who require an efficient, feature-rich real-time clock module.