BQ32002 Datasheet, PDF (2/29 Pages) Texas Instruments – BQ32002 Real-Time Clock (RTC)

BQ32002
SLUSA96B – AUGUST 2010 – REVISED APRIL 2016
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Timing Requirements ................................................ 6
6.7 Typical Characteristics .............................................. 6
7 Detailed Description .............................................. 7
7.1 Overview ................................................................... 7
7.2 Functional Block Diagram ......................................... 7
7.3 Feature Description................................................... 7
7.4 Device Functional Modes........................................ 10
7.5 Programming........................................................... 10
7.6 Register Maps ......................................................... 12
8 Application and Implementation ........................ 19
8.1 Application Information............................................ 19
8.2 Typical Application .................................................. 19
9 Power Supply Recommendations...................... 21
10 Layout................................................................... 21
10.1 Layout Guidelines ................................................. 21
10.2 Layout Example .................................................... 21
11 Device and Documentation Support ................. 22
11.1 Community Resources.......................................... 22
11.2 Trademarks ........................................................... 22
11.3 Electrostatic Discharge Caution ............................ 22
11.4 Glossary ................................................................ 22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
Changes from Revision A (December 2010) to Revision B
Page
• Added Pin Configuration and Functions section, ESD Ratings section, Thermal Information section, Detailed
Description section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable
Information section ................................................................................................................................................................ 1
• Deleted Trickle Charge Pump from Functional Block Diagram/Application Circuit ............................................................... 1
• Changed Crystal series resistance maximum from 40 kΩ to 70 kΩ in Recommended Operating Conditions ...................... 4
• Added Recommended Operating Conditions table note (1) Crystal load capacitance ±10% is allowed. ............................. 4
2
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