Overview
The Texas Instruments BQ32000DR is a real-time clock (RTC) integrated circuit designed to provide accurate timekeeping with advanced features such as automatic backup supply and trickle charging. This device is compatible with industry-standard real-time clocks and is particularly useful in applications requiring reliable timekeeping even during power failures. The BQ32000DR features an I2C interface, supporting serial clock speeds up to 400 kHz, and operates within an ambient temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Interface | I2C (up to 400 kHz) |
| Crystal Frequency | 32.768 kHz |
| Calibration Adjustment | –63 ppm to +126 ppm |
| Package Type | 8-Pin SOIC |
| Ambient Operating Temperature | –40°C to 85°C |
| Backup Supply | Automatic switchover with integrated trickle charger |
| VCC Voltage Range | 3.0 to 3.6 V |
| IRQ Pin Function | General-purpose output or frequency test output |
Key Features
- Automatic switchover to backup supply with integrated trickle charger
- I2C interface supporting serial clock up to 400 kHz
- Uses 32.768-kHz crystal with programmable calibration adjustment from –63 ppm to +126 ppm
- Integrated oscillator-fail detection
- IRQ pin configurable as general-purpose output or frequency test output
- 8-Pin SOIC package
- Operating temperature range of –40°C to 85°C
Applications
The BQ32000DR is suitable for a variety of applications requiring accurate and reliable timekeeping, including:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Consumer electronics with timekeeping requirements
Q & A
- What is the primary function of the BQ32000DR?
The primary function of the BQ32000DR is to provide accurate real-time clock functionality with automatic backup supply and trickle charging. - What interface does the BQ32000DR use?
The BQ32000DR uses an I2C interface supporting serial clock speeds up to 400 kHz. - What is the crystal frequency used by the BQ32000DR?
The BQ32000DR uses a 32.768-kHz crystal. - What is the calibration adjustment range for the BQ32000DR?
The calibration adjustment range is from –63 ppm to +126 ppm. - What is the package type of the BQ32000DR?
The package type is an 8-Pin SOIC. - What is the ambient operating temperature range of the BQ32000DR?
The ambient operating temperature range is –40°C to 85°C. - How does the BQ32000DR handle backup power?
The BQ32000DR features automatic switchover to backup supply with an integrated trickle charger. - What are the possible functions of the IRQ pin on the BQ32000DR?
The IRQ pin can be configured as a general-purpose output or a frequency test output. - What is the voltage range for VCC on the BQ32000DR?
The VCC voltage range is 3.0 to 3.6 V. - Does the BQ32000DR have integrated oscillator-fail detection?
Yes, the BQ32000DR has integrated oscillator-fail detection.
