Freescale Semiconductor, Inc.
Parallel Input/Output
4.5.2 DDRC — Data direction register for port C
Address bit 7
Data direction C (DDRC)
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$0007 DDC7 DDC6 DDC5 DDC4 DDC3 DDC2 DDC1 DDC0 0000 0000
DDC[7:0] — Data direction for port C
1 = The corresponding pin is configured as an output.
0 = The corresponding pin is configured as an input.
Freescale Semiconductor, Inc...
4.6 Port D
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
SCI and SPI functions, as shown in the following table.
Alternate
function
RXD1
TXD1
MISO
MOSI
SCK
SS
Pin
PD0
PD1
PD2
PD3
PD4
PD5
See
Serial
Communications Interface
(SCI)
Serial Peripheral
Interface (SPI)
for more
information.
On reset the pins are configured as general purpose high-impedance
inputs.
4.6.1 PORTD — Port D data register
Address bit 7
Port D data (PORTD)
$0008
0
bit 6
0
bit 5
PD5
bit 4
PD4
bit 3
PD3
bit 2
PD2
bit 1
PD1
bit 0
State
on reset
PD0 undefined
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
Technical Data
Parallel Input/Output
For More Information On This Product,
Go to: www.freescale.com
MC68HC11P2 — Rev 1.0
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
