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User’s Manual U16504EE1V1UD00
Chapter 15
Serial Interface Channel UART
15.1 UART Functions
The serial interface UART has the following modes.
(1)
Operation stop mode
This mode is used if the serial transfer is performed to reduce power consumption.
For details, see
16.5.1 Operation Stop Mode
.
(2)
Asynchronous serial interface (UART) mode
This mode enables the full-duplex operation where one byte of data is transmitted and received
after the start bit.
The on-chip dedicated UART baud rate generator enables communications using a wide range of
selectable baud rates.
For details, see
16.5.2 Asynchronous Serial Interface (UART) Mode
.
Figure 14-1 shows a block diagram of the UART macro.
Figure 15-1:
Block Diagram of UART
Internal bus
Receive
buffer
RXB0
RXD/P62
TXD/P63
Receive
shift
register
PE0 FE0
ASIS0
TXS0
INTST0
Baud rate
generator
TXE0 RXE0
PS01 PS00
CL0 SL0
ASIM0
INTSR0
Receive
control
parity
check
Transmit
shift
register
Transmit
control
parity
addition
RXS0
INTSER0
X
f /2 -
X
f /2
8
OVE0
ISRM0