MC68HC05P9ACDW FREESCALE [Freescale Semiconductor, Inc], MC68HC05P9ACDW Datasheet - Page 67

• Manufacturer Part Number: MC68HC05P9ACDW
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Port A
Port A Data
Register (PORTA)
7-mc68hc05p9a
MOTOROLA
Addr.
$0006 Data Direction Register C (DDRC)
$0007 Data Direction Register D (DDRD)
Figure 28. Parallel I/O Port Register Summary (Continued)
Name:
Port A is an 8-bit general-purpose I/O port.
The port A data register contains a latch for each of the eight port A pins.
PA[7:0] — Port A Data Bits
Reset:
$0000
Read:
Write:
These read/write bits are software programmable. Data direction of
each port A pin is under the control of the corresponding bit in data
direction register A. Reset has no effect on port A data.
Freescale Semiconductor, Inc.
For More Information On This Product,
Bit 7
PA7
Read:
Write:
Read:
Write:
Go to: www.freescale.com
R/W
Reset:
Reset:
Figure 29. Port A Data Register (PORTA)
Parallel I/O Ports
PA6
DDRC7 DDRC6 DDRC5 DDRC4 DDRC3 DDRC2 DDRC1 DDRC0
6
Bit 7
0
0
0
= Unimplemented
PA5
5
6
0
0
0
DDRD5
Unaffected by reset
PA4
5
0
0
4
4
0
0
0
PA3
3
3
0
0
0
PA2
2
2
0
0
0
Parallel I/O Ports
PA1
1
1
0
0
0
Bit 0
PA0
Bit 0
Port A
0
0
0
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