Important: This register is only available for
SAM
L11 and has no effect for
SAM
L10.
This register
allows the user to configure one or more I/O pins as secured or non-secured.
Tip: The I/O pins are
assembled in pin groups (”PORT groups”) with up to 32 pins. Group 0 consists of the
PA pins, group 1 is for the PB pins, etc. Each pin group has its own PORT registers,
with a 0x80 address spacing. For example, the register address offset for the Data
Direction (DIR) register for group 0 (PA00 to PA31) is 0x00, and the register
address offset for the DIR register for group 1 (PB00 to PB31) is 0x80.
|
0x6C |
32 |
PAC Write-Protection, Write-Secure |
0x00000000 |
|
Port Security
Attribution
These bits set the security attribution for the
individual I/O pins in the PORT group.
Value | Description |
---|
0 |
The corresponding I/O pin in the PORT
group is configured as secured. When module is PAC secured, the configuration for
this pin is only available through the secure alias. Attempt to change the pin
configuration through the non-secure alias will be silently ignored and reads will
return 0. |
1 |
The corresponding I/O pin in the PORT
group is configured as non-secured. The I/O line configuration for this pin is
available through the non-secure alias. |