Uart Pins - Fujitsu MB90460 Series Hardware Manual

17.3

UART Pins

This section describes the UART pins and provides a pin block diagram.
■ UART Pins
The UART pins also serve as general ports. Table 17.3-1 lists the pin functions, I/O formats and settings
required to use UART.
Table 17.3-1 UART Pins
Pin name Pin function
Port 4 I/O or serial
P40/SIN0
data input
Port 4 I/O or serial
P41/SOT0
data output
Port 4 I/O or serial
P42/SCK0
clock input/output
Port 6 I/O or serial
P60/SIN1
data input
Port 6 I/O or serial
P61/SOT1
data output
Port 6 I/O or serial
P62/SCK1
clock input/output
I/O format Pull-up
CMOS output
and CMOS Not provided
hysteresis input
CMOS output
and CMOS Not provided
hysteresis input
Setting required to use
Standby control
Set as an input port
(DDR4: bit0 = 0)
Set to output enable mode
(SMR0: SOE = 1)
Set as an input port when a
Provided
clock is input
(DDR4: bit2 = 0)
Set to output enable mode
when a clock is output
(SMR0: SCKE = 1)
Set as an input port
(DDR6: bit0 = 0)
Set to output enable mode
(SMR1: SOE = 1)
Set as an input port when a
Provided
clock is input
(DDR6: bit2 = 0)
Set to output enable mode
when a clock is output
(SMR1:SCKE = 1)
CHAPTER 17 UART
pin
473