HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 162

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Port 6 Data Direction Register (P6DDR)
P6DDR is an 8-bit register that controls the input/output direction of each pin in port 6. A pin
functions as an output pin if the corresponding P6DDR bit is set to 1, and as an input pin if this bit
is cleared to 0.
P6DDR is a write-only register. Read data is invalid. If read, all bits always read 1.
P6DDR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode
it retains its existing values, so if a transition to software standby mode occurs while a P6DDR bit
is set to 1, the corresponding pin remains in the output state.
If a transition to software standby mode occurs while port 6 is being used by the free-running
timer, the timer will be initialized, so the pin will revert to general-purpose input/output,
controlled by P6DDR and P6DR.
Port 6 Data Register (P6DR)
P6DR is an 8-bit register that stores data for pins P6
6 is read, the value in P6DR is obtained directly, regardless of the actual pin state. When a P6DDR
bit is cleared to 0, if port 6 is read the pin state is obtained. This also applies to pins used as FRT
pins.
P6DR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it
retains its existing values.
130
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
P6
R/W
P6
7
W
7
DDR P6
0
7
0
7
R/W
P6
6
W
6
DDR P6
0
6
0
6
R/W
P6
5
W
5
DDR P6
0
5
0
5
R/W
P6
4
W
4
DDR P6
0
4
0
7
to P6
4
0
. When a P6DDR bit is set to 1, if port
R/W
P6
3
W
3
DDR P6
0
3
0
3
R/W
P6
2
W
2
DDR P6
0
2
0
2
R/W
P6
1
W
1
DDR P6
0
1
0
1
R/W
P6
0
W
0
DDR
0
0
0
0