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Pin Functions
2.2.2 Pin function configuration
Table 2-3
Function
Port mode (output)
Port mode (input)
Alternative mode (alternative function 1)
Alternative mode (alternative function 2)
Alternative mode (alternative function 3)
Alternative mode (alternative function 4)
b
On-chip debug mode
a)
In alternative mode, the corresponding port type defines whether a pin is in input mode or output mode.
b)
In on-chip debug mode, the corresponding pins are automatically set as input or output pins to provide the
N-Wire interface. In this mode, the configuration of these pins can not be changed by the pin configuration
registers.
The registers for pin function configuration define the general function of a pin:
• port mode or alternative mode
• in port mode: input mode or output mode
• in alternative mode: selection of one of the alternative functions in
alternative mode
• normal mode or on-chip debug mode (N-Wire interface)
An overview of the register settings is given in the table below.
Pin function configuration (overview)
OCDM
0
1
User's Manual U18743EE1V2UM00
Registers
PMC
PM
PFCE
0
0
1
1
X
X
X
Chapter 2
I/O
PFC
X
X
O
X
X
I
0
0
1
a
I/O
0
1
1
X
X
I/O
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