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PCF85163 Real-time clock and calendar - Digikey

PCF85163 Real-time clock and calendar - Digikey

PCF85163 Real-time clock and calendar - Digikey

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NXP Semiconductors<strong>PCF85163</strong><strong>Real</strong>-<strong>time</strong> <strong>clock</strong> <strong>and</strong> <strong>calendar</strong>23. Contents1 General description . . . . . . . . . . . . . . . . . . . . . . 12 Features <strong>and</strong> benefits . . . . . . . . . . . . . . . . . . . . 13 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Ordering information. . . . . . . . . . . . . . . . . . . . . 25 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Pinning information. . . . . . . . . . . . . . . . . . . . . . 47.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 48 Functional description . . . . . . . . . . . . . . . . . . . 58.1 CLKOUT output . . . . . . . . . . . . . . . . . . . . . . . . 58.2 Register organization . . . . . . . . . . . . . . . . . . . . 68.3 Control registers . . . . . . . . . . . . . . . . . . . . . . . . 78.3.1 Register Control_1 . . . . . . . . . . . . . . . . . . . . . . 78.3.2 Register Control_2 . . . . . . . . . . . . . . . . . . . . . . 78.3.2.1 Interrupt output . . . . . . . . . . . . . . . . . . . . . . . . . 88.4 Time <strong>and</strong> date registers . . . . . . . . . . . . . . . . . . 98.4.1 Register VL_seconds . . . . . . . . . . . . . . . . . . . . 98.4.1.1 Voltage-low detector <strong>and</strong> <strong>clock</strong> monitor . . . . . . 98.4.2 Register Minutes. . . . . . . . . . . . . . . . . . . . . . . 108.4.3 Register Hours . . . . . . . . . . . . . . . . . . . . . . . . 108.4.4 Register Days . . . . . . . . . . . . . . . . . . . . . . . . . 108.4.5 Register Weekdays. . . . . . . . . . . . . . . . . . . . . 108.4.6 Register Century_months. . . . . . . . . . . . . . . . 118.4.7 Register Years . . . . . . . . . . . . . . . . . . . . . . . . 128.5 Setting <strong>and</strong> reading the <strong>time</strong>. . . . . . . . . . . . . . 128.6 Alarm registers . . . . . . . . . . . . . . . . . . . . . . . . 148.6.1 Register Minute_alarm . . . . . . . . . . . . . . . . . . 148.6.2 Register Hour_alarm . . . . . . . . . . . . . . . . . . . 148.6.3 Register Day_alarm . . . . . . . . . . . . . . . . . . . . 148.6.4 Register Weekday_alarm . . . . . . . . . . . . . . . . 148.6.5 Alarm flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158.7 Register CLKOUT_control <strong>and</strong> <strong>clock</strong> output. . 158.8 Timer function . . . . . . . . . . . . . . . . . . . . . . . . . 168.8.1 Register Timer_control . . . . . . . . . . . . . . . . . . 168.8.2 Register Timer . . . . . . . . . . . . . . . . . . . . . . . . 178.9 EXT_CLK test mode. . . . . . . . . . . . . . . . . . . . 178.9.1 Operation example: . . . . . . . . . . . . . . . . . . . . 178.10 STOP bit function . . . . . . . . . . . . . . . . . . . . . . 188.11 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.11.1 Power-On Reset (POR) override . . . . . . . . . . 209 Characteristics of the I 2 C-bus . . . . . . . . . . . . 219.1 Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 219.2 START <strong>and</strong> STOP conditions . . . . . . . . . . . . . 219.3 System configuration . . . . . . . . . . . . . . . . . . . 219.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 229.5 I 2 C-bus protocol . . . . . . . . . . . . . . . . . . . . . . . 239.5.1 Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . 239.5.2 Clock <strong>and</strong> <strong>calendar</strong> READ or WRITE cycles . 2310 Internal circuitry . . . . . . . . . . . . . . . . . . . . . . . 2511 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 2612 Static characteristics . . . . . . . . . . . . . . . . . . . 2713 Dynamic characteristics. . . . . . . . . . . . . . . . . 3114 Application information . . . . . . . . . . . . . . . . . 3214.1 Quartz frequency adjustment. . . . . . . . . . . . . 3314.1.1 Method 1: fixed OSCI capacitor . . . . . . . . . . . 3314.1.2 Method 2: OSCI trimmer . . . . . . . . . . . . . . . . 3314.1.3 Method 3: OSCO output . . . . . . . . . . . . . . . . 3315 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 3416 H<strong>and</strong>ling information . . . . . . . . . . . . . . . . . . . 3617 Soldering of SMD packages. . . . . . . . . . . . . . 3617.1 Introduction to soldering. . . . . . . . . . . . . . . . . 3617.2 Wave <strong>and</strong> reflow soldering. . . . . . . . . . . . . . . 3617.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 3717.4 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 3718 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 3819 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3920 Revision history . . . . . . . . . . . . . . . . . . . . . . . 4021 Legal information . . . . . . . . . . . . . . . . . . . . . . 4121.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 4121.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 4121.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 4121.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 4222 Contact information . . . . . . . . . . . . . . . . . . . . 4223 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Please be aware that important notices concerning this document <strong>and</strong> the product(s)described herein, have been included in section ‘Legal information’.© NXP B.V. 2010. All rights reserved.For more information, please visit: http://www.nxp.comFor sales office addresses, please send an email to: salesaddresses@nxp.comDate of release: 28 July 2010Document identifier: <strong>PCF85163</strong>

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