...the world's most energy friendly microcontrollers
? Communication debugging
? PRS can trigger transmissions
? Full DMA support
17.3 Functional Description
The UART is functionally equivalent to the USART with the exceptions defined in Table 17.1 (p. 218)
. The register map and register descriptions are equal to those of the USART. See the USART chapter
for detailed information on the operation of the UART.
Table 17.1. UART Limitations
Feature
Synchronous operation
Transmission direction
Chip-select
SmartCard mode
Frame size
IrDA
Limitations
Not available. SYNC, CSMA, CSINV, CPOL and CPHA in USARTn_CTRL, and
MASTEREN in USARTn_STATUS are always 0.
Always LSB first. MSBF in USARTn_CTRL is always 0.
Not available. AUTOCS in USARTn_CTRL is always 0.
Not available. SCMODE in USARTn_CTRL is always 0.
Limited to 8-9 databits. Other configurations of DATABITS in USARTn_FRAME
are not possible.
Not available. IREN in USARTn_IRCTRL is always 0.
17.4 Register Description
The register description of the UART is equivalent to the register description of the USART except the
limitations mentioned in Table 17.1 (p. 218) . See the USART chapter for complete information.
17.5 Register Map
The register map of the UART is equivalent to the register map of the USART. See the USART chapter
for complete information.
2011-04-12 - d0001_Rev1.10
218
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