Table of Contents
Advertisement
14.3
Configuration of UART0
The UART0 pins, interrupt factors, register list and details are shown.
I Pins of UART0
The pins used in the UART0 serve also as general-purpose I/O ports.
Table 14.3-1 indicates the pin functions and the setting necessary for use in the UART0.
Table 14.3-1 Pins of UART0
Pin Name
SOT0
SCK0
SIN0
I Block Diagram of Pins of UART0
Reference:
For the block diagram of the pins, see CHAPTER 4 I/O PORT.
Pin Function
General-purpose I/O port,
Address latch enable output/
serial data output
General-purpose I/O port,
read strobe output/
serial clock output input
General-purpose I/O port,
Write strobe output pin for lower 8
bits in data bus/
serial data input
Setting Necessary for Use in UART0
Set to output enable.
(SMR0: SOE=1)
In clock input, set pin as input port in port
direction register (DDR).
In clock output, set to output enable.
(SMR0: SCKE=1)
Set as input port in port direction register
(DDR).
CHAPTER 14 UART0
387
Advertisement
Table of Contents
