XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 184

• Manufacturer Part Number: XC68HC08KH12
• Description: MICROCONTROLLER
• Manufacturer: Motorola

I/O Ports
12.2 Introduction
Advance Information
184
$0000
$0001
$0002
$0003
$0004
$0005
$0006
Addr.
Data Direction Register A
Data Direction Register B
Data Direction Register C
NOTE:
Port A Data Register
Port B Data Register
Port C Data Register
Port D Data Register
Register Name
(DDRA)
(DDRB)
(DDRC)
(PTC)
(PTD)
(PTB)
(PTA)
Forty-two bidirectional input-output (I/O) pins form five parallel ports. All
I/O pins are programmable as inputs or outputs.
Connect any unused I/O pins to an appropriate logic level, either V
V
operation, termination reduces excess current consumption and the
possibility of electrostatic damage.
SS
. Although the I/O ports do not require termination for proper
Table 12-1. I/O Port Register Summary
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
DDRA7
DDRB7
PTD7
PTA7
PTB7
Bit 7
0
0
0
0
0
I/O Ports
DDRA6
DDRB6
PTB6
PTD6
PTA6
6
0
0
0
0
0
DDRA5
DDRB5
PTD5
PTA5
PTB5
5
0
0
0
0
0
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
DDRC4
DDRA4
DDRB4
PTB4
PTC4
PTD4
PTA4
4
0
0
0
DDRA3
DDRB3
DDRC3
PTC3
PTD3
PTA3
PTB3
3
0
0
0
MC68HC(7)08KH12
DDRA2
DDRB2
DDRC2
PTB2
PTC2
PTD2
PTA2
2
0
0
0
DDRA1
DDRB1
DDRC1
PTC1
PTD1
PTA1
PTB1
1
0
0
0
MOTOROLA
—
Rev. 1.0
DDRA0
DDRB0
DDRC0
PTB0
PTC0
PTD0
PTA0
Bit 0
DD
0
0
0
or