MC68HC908JK3 MOTOROLA [Motorola, Inc], MC68HC908JK3 Datasheet - Page 148

• Manufacturer Part Number: MC68HC908JK3
• Description: MC68HC908JK1
• Manufacturer: MOTOROLA [Motorola, Inc]

I/O Ports
12.3 Port A
Technical Data
148
Addr.
$000D
$000A
$0000
$0001
$0003
$0004
$0005
$0007
Data Direction Register D
Data Direction Register A
Data Direction Register B
Port D Control Register
Register Name
Port D Data Register
Port A Data Register
Port B Data Register
Port A Input Pull-up
Enable Register
(PTAPUE)
(DDRD)
(DDRA)
(DDRB)
(PDCR)
(PTA)
(PTB)
(PTD)
Port A is an 7-bit special function port that shares all seven of its pins
with the Keyboard Interrupt (KBI) Module, See
pin also has software configurable pull-up device if the corresponding
port pin is configured as input port. PTA0 to PTA5 has direct LED drive
capability.
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Figure 12-1. I/O Port Register Summary
PTA6EN PTAPUE6 PTAPUE5 PTAPUE4 PTAPUE3 PTAPUE2 PTAPUE1 PTAPUE0
DDRB7
DDRD7
PTD7
PTB7
Bit 7
0
0
0
0
0
0
0
0
DDRA6
DDRB6
DDRD6
PTA6
PTB6
PTD6
6
0
0
0
0
0
0
I/O Ports
DDRA5
DDRB5
DDRD5
PTA5
PTB5
PTD5
5
0
0
0
0
0
0
Unaffected by reset
Unaffected by reset
Unaffected by reset
DDRA4
DDRB4
DDRD4
PTA4
PTB4
PTD4
4
0
0
0
0
0
0
SLOWD7 SLOWD6 PTDPU7
DDRA3
DDRB3
DDRD3
PTA3
PTB3
PTD3
3
0
0
0
0
0
MC68H(R)C908JL3
Section 14.
DDRD2
DDRA2
DDRB2
PTA2
PTB2
PTD2
0
0
0
0
0
2
DDRD1
DDRA1
DDRB1
PTA1
PTB1
PTD1
1
0
0
0
0
0
Each port A
MOTOROLA
—
PTDPU6
Rev. 1.0
DDRD0
DDRA0
DDRB0
PTA0
PTB0
PTD0
Bit 0
0
0
0
0
0