Table 9-11 Port 6 Pin Functions in Modes 7, 2, and 1 (cont)
Pin
P6
1
/ IRQ
3
/
PW
1
Selection of Pin Functions
The function depends on the interrupt request 3 enable bit (IRQ
3
E) and P6PWME
bit in SYSCR2, and the OE bit of PWM timer 1.
IRQ
3
E
P6PWME
OE
Pin function
0
1
0
1
0
1
0
1
0
1
0
1
0
1
P6
1
input/output PW
1
output IRQ
3
input
IRQ
3
input
When used for P6
1
input/output, the input or output function is selected by P6
1
DDR.
P6
0
/ IRQ
2
The function depends on the interrupt request 2 enable bit (IRQ
2
E) in SYSCR2.
IRQ
2
E
Pin function
0
1
P6
0
input/output
IRQ
2
input
When used for P6
0
input/output, the input or output function is selected by P6
0
DDR.
9.7.4 Built-In MOS Pull-Up
Port 6 has programmable MOS input pull-ups which are turned on by clearing the corresponding
bit in P6DDR to 0 and writing a 1 in P6DR. These pull-ups are turned off at a reset and in the
hardware standby mode. Table 9-12 indicates the status of the MOS pull-ups in various modes.
Table 9-12 Status of MOS Pull-Ups for Port 5
Mode
1
2
3
4
7
Reset
OFF
Hardware Standby Mode
OFF
Other Operating States
*
OFF
* Including software standby mode.
Notation:
OFF:
The MOS pull-up is always off.
ON/OFF:
The MOS pull-up is on when P6DDR = 0 and P6DR = 1, and off otherwise.
Note:
When P6
1
, P6
2
, and P6
3
are used for PWM timer output, their MOS pull-ups are switched
off regardless of the values in P6DDR and P6DR.
ON/OFF
ON/OFF
172