MC68HC705J MOTOROLA [Motorola, Inc], MC68HC705J Datasheet - Page 88

• Manufacturer Part Number: MC68HC705J
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Parallel Input/Output (I/O) Ports
Technical Data
88
Addr.
$0000
$0001
$0004
$0005
$0010
$0011
Data Direction Register A
Data Direction Register B
Register Name
Port A Data Register
Port B Data Register
Pulldown Register A
Pulldown Register B
See page 89.
See page 92.
See page 90.
See page 93.
See page 91.
See page 94.
(PORTA)
(PORTB)
(DDRA)
(DDRB)
(PDRA)
(PDRB)
Figure 6-1. Parallel I/O Port Register Summary
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
DDRA7
PDIA7
Bit 7
PA7
0
0
0
0
0
Parallel Input/Output (I/O) Ports
= Unimplemented
DDRA6
PDIA6
PA6
6
0
0
0
0
0
DDRA5
DDRB5
PDIA5
PDIB5
PA5
PB5
5
0
0
0
0
Unaffected by reset
Unaffected by reset
DDRA4
DDRB4
PDIA4
PDIB4
PA4
PB4
4
0
0
0
0
DDRA3
DDRB3
PDIA3
PDIB3
PA3
PB3
3
0
0
0
0
MC68HC705J1A — Rev. 4.0
DDRA2
DDRB2
PDIA2
PDIB2
PA2
PB2
2
0
0
0
0
DDRA1
DDRB1
PDIA1
PDIB1
PA1
PB1
1
0
0
0
0
MOTOROLA
DDRA0
DDRB0
PDIA0
PDIB0
Bit 0
PA0
PB0
0
0
0
0