The DS1390U-33+ is a high-precision, low-voltage real-time clock (RTC) from Maxim Integrated that provides a robust timing solution for embedded systems. This compact RTC integrates a crystal oscillator and a digital temperature compensator to maintain accurate timekeeping over a wide temperature range. With its SPI/3-wire interface, the DS1390U-33+ is easily integrated into a variety of microcontroller-based systems.

Key Features

• Accurate timekeeping with integrated crystal and digital temperature compensation
• Low operating voltage, ideal for battery-powered applications
• Flexible communication with SPI or 3-wire serial interface
• Automatic leap year compensation until the year 2100
• 4kB NV SRAM for data storage
• Time-of-day alarm and programmable square-wave output
• Compact 10-pin µSOP package

Applications

The DS1390U-33+ is suitable for a broad range of applications, including:

• Handheld devices
• Portable medical equipment
• Industrial systems
• Consumer electronics

With its low-power consumption and high accuracy, the DS1390U-33+ is an ideal choice for systems that require reliable timekeeping under varying environmental conditions. The onboard non-volatile (NV) SRAM allows for data storage even when the main power is off, ensuring data retention without the need for an external battery.

Technical Specifications

The DS1390U-33+ operates over a wide temperature range and has the following technical specifications:

• Operating Voltage: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• Package: 10-pin µSOP

For more detailed information, datasheets, and support, visit the Maxim Integrated official website or contact their customer support team.