Datasheet

2.2.9 LPTMR

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, including the low-leakage modes. It can also continue operating through most

system reset events, allowing it to be used as a time of day counter.

The LPTMR module has the following features:

• 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

2.2.10 CRC

This device contains one cyclic redundancy check (CRC) module which can generate

16/32-bit CRC code for error detection.

The CRC module provides a programmable polynomial, WAS, and other parameters

required to implement a 16-bit or 32-bit CRC standard.

The CRC module has the following features:

• Hardware CRC generator circuit using a 16-bit or 32-bit programmable shift

• Programmable initial seed value and polynomial

• Option to transpose input data or output data (the CRC result) bitwise or bytewise.

• Option for inversion of final CRC result

• 32-bit CPU register programming interface

2.2.11

LPUART

This product contains three Low-Power UART modules, both of their clock sources are

selectable fromIRC48M, MCGFLLCLK, MCGPLLCLK, MCGIRCCLK or external

crystal clock, and can work in Stop and VLPS modes. They also support 4x to 32x data

oversampling rate to meet different applications.

The LPUART module has the following features:

• Full-duplex, standard non-return-to-zero (NRZ) format

Overview

Kinetis KL82 Microcontroller, Rev. 3, 08/2016

NXP Semiconductors