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Documents BQ32002
SLUSA96B – AUGUST 2010 – REVISED APRIL 2016 BQ32002 Real-Time Clock (RTC)
1 Features 3 Description The BQ32002 device is a compatible replacement for
industry standard real-time clocks. 1 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 2 Applications
General Consumer Electronics The BQ32002 features an automatic backup supply
that can be implemented using a capacitor or nonrechargeable battery. The BQ32002 has a
programmable calibration adjustment from –63 ppm
to +126 ppm. The BQ32002 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 …
