Serial RTC with Battery Backup and Trickle Charge
Product details
Parameters
Package | Pins | Size
Features
- Automatic Switchover to Backup Supply
- I2C Interface Supports Serial Clock up to 400 kHz
- Uses 32.768-kHz Crystal With –63-ppm to
+126-ppm Adjustment - Integrated Oscillator-Fail Detection
- 8-Pin SOIC Package
- –40°C to 85°C Ambient Operating Temperature
Description
The bq32000 device is a compatible replacement for industry standard real-time clocks.
The bq32000 features an automatic backup supply with integrated trickle charger. The backup supply can be implemented using a capacitor or non-rechargeable battery. The bq32000 has a programmable calibration adjustment from –63 ppm to +126 ppm. The bq32000 registers include an OF (oscillator fail) flag indicating the status of the RTC oscillator, as well as a STOP bit that allows the host processor to disable the oscillator. The time registers are normally updated once per second, and all the registers are updated at the same time to prevent a timekeeping glitch. The bq32000 includes automatic leap-year compensation.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | bq32000 Real-Time Clock (RTC) datasheet (Rev. E) | Aug. 31, 2015 |
| Application notes | BQ32002 APIs for Tiva | Jan. 28, 2014 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Software development
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
- bq32000
The files associated (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
Ordering & quality
Support & training
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