Uart Pins - Fujitsu MB91150 Series Hardware Manual

CHAPTER 15 UART

15.3 UART Pins

This section describes the UART pins and provides pin block diagrams.
I UART pins
UART pins can also be used as general-purpose ports. Table 15.3-1 "UART pins" shows the pin
functions, input-output format, and settings for using the UART.
Table 15.3-1 UART pins
Pin
Pin name
function
Port H input-
PH0/SIN0 output/serial
data input
Port H input-
PH1/SOT0 output/serial
data output
Port H input-
PH2/SCK0/ output/serial
T00 clock input-
output
Port H input-
PH3/SIN1 output/serial
data input
Port H input-
PH4/SOT1 output/serial
data output
Port H input-
PH5/SCK1/ output/serial
T01 clock input-
output
308
Input-
Pull-up
output
selection
format
CMOS
output/
CMOS Available
hysteresis
input
CMOS
output/
CMOS Available
hysteresis
input
Open-
Standby
drain
control
control
Available Available
Available Available
Settings necessary for
using the pins
Set to input port
(DDRH: Bit 0 = 0)
Set to output enabled
(SMR0: SOE = 1)
Set to input port at clock
input (DDRH: Bit 2 = 0)
Set to output enabled at
clock output (SMR0:
SCKE = 1)
Set to input port
(DDRH: Bit 3 = 0)
Set to output enabled
(SMR1: SOE = 1)
Set to input port at clock
input (DDRH: Bit 5 = 0)
Set to output enabled at
clock output (SMR1:
SCKE = 1)