NXP Semiconductors K22F series - Modes of Operation

• Noise error
• Framing error
• Parity error
• Active edge on receive pin
• LIN break detect
• Receiver framing error detection
• Hardware parity generation and checking
• 1/16 bit-time noise detection
• DMA interface
47.1.2
Modes of operation
The UART functions in the same way in all the normal modes.
It has the following low power modes:
• Wait mode
• Stop mode
47.1.2.1
Run mode
This is the normal mode of operation.
47.1.2.2
Wait mode
UART operation in the Wait mode depends on the state of the C1[UARTSWAI] field.
• If C1[UARTSWAI] is cleared, and the CPU is in Wait mode, the UART operates
normally.
• If C1[UARTSWAI] is set, and the CPU is in Wait mode, the UART clock generation
ceases and the UART module enters a power conservation state.
C1[UARTSWAI] does not initiate any power down or power up procedures for the
ISO-7816 smartcard interface.
Chapter 47 Universal Asynchronous Receiver/Transmitter (UART)
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 1217