Fujitsu F2MC-8L MB89620 Series Hardware Manual page 131

4.6 Port 5
4.6.1 Port 5 Register (PDR5)
This section describes the port-5 register.
n Port 5 Register Functions
Port 5 data register (PDR5)
Writing data to the PDR5 register outputs the data directly to the port. Also, reading the PDR5
register always returns the output latch data.
Table 4.6.1 lists the functions of the port 5 register.
Table 4.6.1 Port 5 Register Function
Register
Port 5 data register
(PDR5)
R/W : Readable and writable
* : Pins with a pull-up resistor (mask option) go to the pull-up state.
110
CHAPTER 4 I/O PORTS
Data Read
Pin state is the "L"
0
level.
Pin state is the "H"
1
level.
Read/
Write
Write
Outputs an "L" level to
the pin.
(Sets "0" to the output
latch and turn the output
transistor "ON".)
R/W
Sets the pin to the high-
impedance state.*
(Sets "1" to the output
latch and turn the output
transistor "OFF".)
Address Initial value
0010 11111111
H B
MB89620 series