MC68HC705P6A Datasheet, PDF (30/130 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Memory
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
Register Name
Bit 7
Read:
Port A Data Register
PA7
(PORTA) Write:
See page 52.
Reset:
Read:
Port B Data Register
PB7
(PORTB) Write:
See page 53.
Reset:
Read:
Port C Data Register
PC7
(PORTC) Write:
See page 54.
Reset:
Read: PD7
Port D Data Register
(PORTD) Write:
See page 55.
Reset:
Port A Data Direction
Register (DDRA)
See page 52.
Read:
Write:
Reset:
DDRA7
0
Port B Data Direction
Register (DDRB)
See page 53.
Read:
Write:
Reset:
DDRB7
0
Port C Data Direction
Register (DDRC)
See page 54.
Read:
Write:
Reset:
DDRC7
0
Read: 0
Port D Data Direction
Register (DDRD) Write:
See page 55.
Reset: 0
Unimplemented
6
PA6
PB6
PC6
0
DDRA6
0
DDRB6
0
DDRC6
0
0
0
5
PA5
PB5
PC5
PD5
DDRA5
0
DDRB5
0
DDRC5
0
DDRD5
0
0
4
3
PA4
PA3
Unaffected by reset
0
0
Unaffected by reset
PC4
PC3
Unaffected by reset
1
0
Unaffected by reset
DDRA4 DDRA3
0
0
1
1
0
0
DDRC4 DDRC3
0
0
0
0
0
0
2
PA2
0
PC2
0
DDRA2
0
1
0
DDRC2
0
0
0
1
PA1
0
PC1
0
DDRA1
0
1
0
DDRC1
0
0
0
Bit 0
PA0
0
PC0
0
DDRA0
0
1
0
DDRC0
0
0
0
= Unimplemented
R = Reserved
U = Undetermined
Figure 2-3. I/O and Control Register Summary (Sheet 1 of 4)
Advance Information
30
Memory
MC68HC705P6A — Rev. 2.0
MOTOROLA