NXP Semiconductors Kinetis KE1xZ256, Reference Manual

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42.2 Introduction
The low-power timer (LPTMR) can be configured to operate as a time counter with
optional prescaler, or as a pulse counter with optional glitch filter, across all power
modes. It can also continue operating through most system reset events, allowing it to be
used as a time of day counter.
42.2.1 Features
The features of the LPTMR module include:
• 16-bit time counter or pulse counter with compare
• Optional interrupt can generate asynchronous wakeup from any low-power mode
• Hardware trigger output
• Counter supports free-running mode or reset on compare
• Configurable clock source for prescaler/glitch filter
• Configurable input source for pulse counter
• Rising-edge or falling-edge
42.2.2 Modes of operation
The following table describes the operation of the LPTMR module in various modes.
Table 42-1. Modes of operation
Modes Description
Run The LPTMR operates normally.
Wait
The LPTMR continues to operate normally and
can be configured to exit the low-power mode by
generating an interrupt request.
Stop
The LPTMR continues to operate normally and
can be configured to exit the low-power mode by
generating an interrupt request.
Debug
The LPTMR operates normally in Pulse Counter
mode, but the counter does not increment in
Time Counter mode.
Chapter 42 Low Power Timer (LPTMR)
Kinetis KE1xZ256 Sub-Family Reference Manual, Rev. 3, 07/2018
NXP Semiconductors 1055