3.9.4.1 UART0 overview
The UART0 module supports basic UART with DMA interface function, x4 to x32
oversampling of baud-rate.
This module supports LIN slave operation.
The module can remain functional in VLPS mode provided the clock it is using remains
enabled.
ISO7816 protocol is intended to be handled in software for this product. To support smart
card reading, TxD pin can be configured as pseudo open drain for 1-wire half-duplex like
ISO7816 communication via the SIM_SOPT5[UART0ODE] bit.
3.9.4.2 UART1 and UART2 Overview
This device contains two basic universal asynchronous receiver/transmitter (UART)
modules with DMA function support. Generally, these modules are used in RS-232,
RS-485, and other communications. This module supports LIN Slave operation.
Human-machine interfaces (HMI)
3.10.1 GPIO Configuration
Signal multiplexing
Register
access
Peripheral
bridge
Module signals
GPIO controller
ARM Cortex -M0+
Core
Register access
Figure 3-37. GPIO configuration
Table 3-48. Reference links to related information
Topic Related module Reference
Full description GPIO GPIO
System memory map System memory map
Clocking Clock Distribution
Table continues on the next page...
3.10
Chapter 3 Chip Configuration
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
Freescale Semiconductor, Inc. 99
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