K32L3A datasheet(42/162 Pages) NXP

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2.2.12 LPTMR

This device contains three low-power timer (LPTMR) which 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:

• 32-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

2.2.13 LPUART

This product contains four Low-Power UART modules, their clock sources are

selectable from LPFLL, SIRC, FIRC and SOSC, 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

• Programmable baud rates (13-bit modulo divider) with configurable oversampling

ratio from 4x to 32x

• Transmit and receive baud rate can operate asynchronous to the bus clock:

• Baud rate can be configured independently of the bus clock frequency

• Supports operation in Stop modes

• Interrupt, DMA or polled operation:

• Transmit data register empty and transmission complete

• Receive data register full

• Receive overrun, parity error, framing error, and noise error

• Idle receiver detect

• Active edge on receive pin

Overview

K32L3A, Rev. 1, 09/2019

NXP Semiconductors

K32L3A Datasheet(PDF) 42 Page - NXP Semiconductors