BQ32000DR

Overview

The BQ32000DR is a low-power microprocessor peripheral real-time clock (RTC) and calendar from Texas Instruments, housed in an 8-pin SOIC package. It operates on a single supply voltage ranging from 3 V to 3.6 V with a maximum current consumption of 100 µA at 3.3 V. The device supports I²C serial communication and provides timekeeping in HH:MM:SS format (12/24 hour) and date tracking in YY-MM-DD-dd format. It includes a backup switching mechanism for continuous operation during power loss.

Feature Summary

• Integrated 100-year calendar with leap year compensation
• Three programmable interrupt sources and square wave output
• 114 bytes of general-purpose non-volatile memory
• Built-in trickle charger for battery backup

Applications

• Microprocessor-based systems requiring precise timekeeping
• Data logging equipment needing calendar functions
• Battery-powered devices utilizing backup switching

Procurement Notes

Verify the specific suffix 'DR' corresponds to the tape-and-reel packaging configuration when ordering. Confirm that the I²C bus interface compatibility matches the host controller's electrical levels. Ensure the operating temperature range of -40°C to +85°C meets the environmental requirements of the target application.

Selection Notes

Select this component for applications requiring a compact 8-SOIC footprint and integrated non-volatile storage. Compare the 100 µA active current against stricter low-power alternatives if battery life is critical. Verify that the 114-byte NVM capacity is sufficient for the required data retention needs without external memory.

Part Context

This part belongs to the BQ32000 series of real-time clocks. The 'DR' designation specifically indicates the surface-mount SOIC-8 package variant manufactured by Texas Instruments. It serves as a dedicated timing solution for embedded systems requiring autonomous timekeeping capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate other Texas Instruments RTCs within the same family for pin-compatible or functionally equivalent alternatives based on specific design constraints.