NXP Semiconductors KL25 Series - Page 24

Section number Title Page
33.4 Functional description...................................................................................................................................................593
33.4.1 LPTMR power and reset..............................................................................................................................593
33.4.2 LPTMR clocking..........................................................................................................................................593
33.4.3 LPTMR prescaler/glitch filter......................................................................................................................593
33.4.4 LPTMR compare..........................................................................................................................................595
33.4.5 LPTMR counter...........................................................................................................................................595
33.4.6 LPTMR hardware trigger.............................................................................................................................596
33.4.7 LPTMR interrupt..........................................................................................................................................596
Chapter 34
Real Time Clock (RTC)
34.1 Introduction...................................................................................................................................................................597
34.1.1 Features........................................................................................................................................................597
34.1.2 Modes of operation......................................................................................................................................597
34.1.3 RTC Signal Descriptions.............................................................................................................................597
34.2 Register definition.........................................................................................................................................................598
34.2.1 RTC Time Seconds Register (RTC_TSR)...................................................................................................599
34.2.2 RTC Time Prescaler Register (RTC_TPR)..................................................................................................599
34.2.3 RTC Time Alarm Register (RTC_TAR).....................................................................................................600
34.2.4 RTC Time Compensation Register (RTC_TCR).........................................................................................600
34.2.5 RTC Control Register (RTC_CR)................................................................................................................601
34.2.6 RTC Status Register (RTC_SR)..................................................................................................................603
34.2.7 RTC Lock Register (RTC_LR)....................................................................................................................604
34.2.8 RTC Interrupt Enable Register (RTC_IER).................................................................................................605
34.3 Functional description...................................................................................................................................................606
34.3.1 Power, clocking, and reset...........................................................................................................................606
34.3.2 Time counter................................................................................................................................................607
34.3.3 Compensation...............................................................................................................................................607
34.3.4 Time alarm...................................................................................................................................................608
34.3.5 Update mode................................................................................................................................................608
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
24 Freescale Semiconductor, Inc.