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| BQ32002 Datasheet, PDF (21/29 Pages) Texas Instruments – BQ32002 Real-Time Clock (RTC) | |||
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www.ti.com
BQ32002
SLUSA96B â AUGUST 2010 â REVISED APRIL 2016
9 Power Supply Recommendations
The BQ32002 is designed to operate from an input voltage supply, VCC, range between 3 and 3.6 V. The user
must place a minimum of 1-µF ceramic bypass capacitor rated for at least the maximum voltage as close as
possible to VCC and GND pin.
10 Layout
10.1 Layout Guidelines
The VCC pin should be bypassed to GND using a low-ESR ceramic bypass capacitor with a minimum
recommended value of 1 µF. This capacitor must be placed as close to the VCC and GND pins as possible with
thick trace or ground plane connection to the device GND pin.
Locate the 32.768-kHz crystal oscillator as close as possible to the OSCI and OSCO pins. This will minimize
stray capacitance.
10.2 Layout Example
OSCI
0.22F
OSCO
VBACK
GND
1 µF
VCC
____
IRQ
SCL
SDA
Figure 11. Recommended PCB Layout
Copyright © 2010â2016, Texas Instruments Incorporated
Product Folder Links: BQ32002
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