Information

Chapter 45
Universal Asynchronous Receiver/Transmitter
(UART)
45.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
The UART allows asynchronous serial communication with peripheral devices and
CPUs.
45.1.1 Features
The UART includes these distinctive features:
• Full-duplex operation
• Standard mark/space non-return-to-zero (NRZ) format
• Selectable IrDA 1.4 return-to-zero-inverted (RZI) format with programmable pulse
widths
• 13-bit baud rate selection with /32 fractional divide, based on module clock
frequency
• Programmable 8-bit or 9-bit data format
• Separately enabled transmitter and receiver
• Programmable transmitter output polarity
• Programmable receive input polarity
• 13-bit break character option
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 1247