HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 189

• Manufacturer Part Number: HD6435348R
• Description: Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Table 9-11 Port 6 Pin Functions in Modes 7, 2, and 1 (cont)
Pin
P6
PW
P6
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
* Including software standby mode.
Notation:
OFF:
ON/OFF:
Note: When P6
off regardless of the values in P6DDR and P6DR.
1
0
1
/ IRQ
/ IRQ
Reset
OFF
3
2
/
The MOS pull-up is always off.
The MOS pull-up is on when P6DDR = 0 and P6DR = 1, and off otherwise.
Selection of Pin Functions
The function depends on the interrupt request 3 enable bit (IRQ
bit in SYSCR2, and the OE bit of PWM timer 1.
IRQ
P6PWME
OE
Pin function P6
When used for P6
The function depends on the interrupt request 2 enable bit (IRQ
IRQ
Pin function
When used for P6
1
, P6
3
2
E
E
Hardware Standby Mode
OFF
2
, and P6
3
0
1
are used for PWM timer output, their MOS pull-ups are switched
1
0
input/output PW
0
input/output, the input or output function is selected by P6
input/output, the input or output function is selected by P6
P6
1
0
input/output
0
0
0
172
1
1
1
output IRQ
Other Operating States*
ON/OFF
OFF
ON/OFF
0
3
0
input IRQ
IRQ
1
2
1
1
input
0
3
1
input
3
2
E) and P6PWME
E) in SYSCR2.
1
1
0
DDR.
DDR.