DS1629S-C05+T&R

Thermal Management Overview

The DS1629S-C05+T&R is a board-mount digital thermometer and real-time clock (RTC) in an 8-pin SO package. It measures temperatures from -55°C to +125°C with ±2.0°C accuracy and 9-bit resolution. The RTC counts seconds, minutes, hours, date, month, day of week, and year with leap year compensation through 2100. It features a 2-wire serial interface, user-definable thermostatic and time alarms, and 32 bytes of SRAM for data storage. Operating voltage ranges from 2.2V to 5.5V.

Thermal Management Feature Summary

• Integrates a factory-calibrated digital thermometer and a real-time clock/calendar with leap year compensation.
• Provides user-definable thermostatic and time alarm settings via a dedicated open-drain output.
• Includes 32 bytes of SRAM for general system data or time/temperature logging.
• Communicates via a 2-wire serial interface with a wide power supply range suitable for battery-powered applications.

Thermal Management Applications

• Personal computers and PDAs
• Cellular telephones
• Office equipment
• Thermal data loggers

Thermal Management Procurement Notes

Verify the specific C05 suffix against the manufacturer's current ordering information to confirm calibration or packaging variations. Confirm RoHS compliance status as indicated by the plus sign. Ensure the tape and reel quantity matches production requirements. Check for obsolescence notices given the component's age. Validate pin compatibility with existing PCB footprints.

Thermal Management Selection Notes

Select this component when a combined temperature monitoring and timekeeping solution is required in a compact package. The 2-wire interface simplifies microcontroller connections. Consider the ±2.0°C accuracy sufficient for general thermal management. The wide operating temperature range supports harsh environments. Verify that the 32-byte SRAM meets data logging needs.

Thermal Management Part Context

The DS1629 series combines temperature sensing and real-time clock functions into a single integrated circuit. It utilizes a 2-wire serial bus for communication, reducing pin count. The device includes nonvolatile memory for alarm thresholds and configuration settings. It is designed for applications requiring accurate time and temperature tracking with minimal external components.

Thermal Management Replacement Considerations

DS1629S+

Thermal Management FAQ

How is the alarm condition cleared?

The thermal alarm clears when the temperature falls below the programmed low threshold. The clock alarm clears upon reading or writing to the clock register or clock alarm register.

What is the default power-up state of the oscillator?

The oscillator is enabled by default at power-up, allowing the OSC pin to provide a clock signal to a microcontroller immediately.