MC68HC711PH8 Motorola, MC68HC711PH8 Datasheet - Page 83

• Manufacturer Part Number: MC68HC711PH8
• Description: High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
• Manufacturer: Motorola

4.4
Port D is a 6-bit bidirectional port, with both data and data direction registers. In addition to their I/O
capability, port D pins are shared with SCI1 and SPI1 functions, as shown in the following table.
On reset the pins are configured as general purpose high-impedance inputs.
4.4.1
This is a read/write register and is not affected by reset. The bits may be read and written at any
time, but, when a pin is allocated to its alternate function, a write to the corresponding register bit
has no effect on the pin state.
4.4.2
Bits [7:6] — Reserved; always read zero
DDD[5:0] — Data direction for port D
MC68HC11PH8
Data direction D (DDRD)
Port D data (PORTD)
1 (set)
0 (clear) –
Port D
PORTD — Port D data register
DDRD — Data direction register for port D
–
The corresponding pin is configured as an output.
The corresponding pin is configured as an input.
Address
Address
$0008
$0009
PD0
PD1
PD2
PD3
PD4
PD5
Pin
PARALLEL INPUT/OUTPUT
bit 7
bit 7
Alternate
function
0
0
MISO1
MOSI1
RXD1
SCK1
TXD1
SS1
bit 6
bit 6
0
0
DDD5 DDD4 DDD3 DDD2 DDD1 DDD0 0000 0000
PD5
bit 5
bit 5
See Section 5 for
more information.
See Section 7 for
more information.
bit 4
PD4
bit 4
PD3
bit 3
bit 3
bit 2
PD2
bit 2
PD1
bit 1
bit 1
bit 0
PD0
bit 0
MOTOROLA
undeÞned
on reset
on reset
State
State
TPG
4-5
4