mc68hc05p9a Freescale Semiconductor, Inc, mc68hc05p9a Datasheet - Page 76

• Manufacturer Part Number: mc68hc05p9a
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

Parallel I/O Ports
Port D
Port D Data
Register (PORTD)
76
Function:
Alternate
Port D is a 2-bit port with one I/O pin and one input-only pin. Port D
shares the input-only pin, PD7/TCAP, with the capture/compare timer.
PD7/TCAP is the timer input capture pin. The PD7/TCAP pin can always
be a general-purpose input, even if input capture interrupts are enabled.
The port D data register contains a latch for each of the two port D pins.
PD7 and PD5 — Port D Data Bits
TCAP — Timer Capture
Reset:
$0003
Read:
Write:
These read/write bits are software programmable. Data direction of
each port D pin is under the control of the corresponding bit in data
direction register D. Reset has no effect on port D data.
TCAP is the input capture pin for the timer.
Freescale Semiconductor, Inc.
For More Information On This Product,
TCAP
Bit 7
PD7
Figure 38. Port D Data Register (PORTD)
Go to: www.freescale.com
= Unimplemented
Parallel I/O Ports
6
0
PD5
5
Unaffected by reset
4
1
3
0
2
0
1
0
16-mc68hc05p9a
MOTOROLA
Bit 0
0