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Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR I2C 8SOIC
- Series：-
- Package：Tape & Reel (TR),Cut Tape (CT)
- Mfr：Texas Instruments
- Type：Clock/Calendar
- Features：Leap Year, Square Wave Output
- Memory Size：-
- Time Format：HH:MM:SS (24 hr)
- Date Format：YY-MM-DD-dd
- Interface：I2C, 2-Wire Serial
- Voltage - Supply：3V ~ 3.6V
- Voltage - Supply, Battery：1.4V ~ 3.6V
- Current - Timekeeping (Max)：65µA @ 3.3V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
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Overview
The BQ32002DR is a low-power microprocessor peripheral providing a real-time clock and 100-year calendar with alarm functions. It features an I²C interface, three maskable interrupt sources, a square wave output, and 114 bytes of general-purpose non-volatile memory. The device operates on a main supply voltage of 3V to 3.6V and supports battery backup from 1.4V to 3.6V. Maximum current consumption during timing is 100µA at 3.3V. It is housed in an 8-SOIC package and functions within a temperature range of -40°C to 85°C.
Feature Summary
- Integrated 100-year calendar and real-time clock with HH:MM:SS (24-hour) time format and YY-MM-DD-dd date format.
- Includes 114 bytes of general-purpose non-volatile RAM for data storage.
- Supports three maskable interrupt sources and a programmable square wave output.
- Features a trickle charger for battery maintenance.
Applications
- Microprocessor systems requiring precise timekeeping.
- Data logging devices needing non-volatile timestamping.
- Battery-powered embedded systems with low power constraints.
Procurement Notes
Verify the specific suffix 'DR' corresponds to the tape-and-reel packaging configuration when ordering. Confirm that the 8-SOIC package dimensions align with the target PCB footprint. Ensure the design accounts for the specified operating voltage ranges and temperature limits for the intended environment.
Selection Notes
Select this component when an I²C-compatible RTC with integrated non-volatile memory is required. Compare against the base BQ32000 model if additional features or different packaging are needed. Verify compatibility with the system's I²C bus speed and voltage levels before integration.
Part Context
The BQ32002DR belongs to the BQ32000 family of real-time clocks manufactured by Texas Instruments. This series is designed as a drop-in replacement for legacy RTC solutions, offering enhanced memory capacity and integrated battery management features in a compact surface-mount package.
Replacement Considerations
Check for direct pin-to-pin equivalents within the BQ32000 family. Verify functional compatibility regarding register maps and interrupt logic when substituting with other RTC models.
