Port 1 Registers - Fujitsu F2MC-8FX Hardware Manual

CHAPTER 9 I/O PORT
9.3.1

Port 1 Registers

This section describes the port 1 registers.
Port 1 Register Function
Table 9.3-2 lists the port 1 register functions.
Table 9.3-2 Port 1 Register Function
Register
Data
name
0
PDR1
1
0
DDR1
1
0
PUL1
1
00
01
ILSR,ILSR2
10
11
Table 9.3-3 lists the correspondence between port 1 pins and each register bit.
Table 9.3-3 Correspondence Between Registers and Pins for Port 1
Pin name -
PDR1
-
DDR1
PUL1
-
ILSR -
ILSR2 -
112
Read
Pin state is "L" level.
Pin state is "H" level.
Automotive input level selection
Correspondence between related register bits and pins
- -
- -
- -
- -
- -
Read read-modify-write
PDR value is "0".
PDR value is "1".
Port input enabled
Port output enabled
Pull-up disabled
Pull-up enabled
Hysteresis input level selection
CMOS input level selection
P14 P13 P12
bit4 bit3 bit2
- - bit2
- -
bit1 bit1 bit1
Write
As output port, outputs
"L" level.
As output port, outputs
"H" level.
P11 P10
bit1 bit0
bit1 bit0
- - bit0
bit1 bit1