mc68hc05p18a Freescale Semiconductor, Inc, mc68hc05p18a Datasheet - Page 29

• Manufacturer Part Number: mc68hc05p18a
• Description: Mc68hc05p18a Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

MC68HC05P18A
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
Addr.
Port C Data Direction
Port D Data Direction
Port A Data Direction
Port B Data Direction
Port A Data Register
Port B Data Register
Port C Data Register
Port D Data Register
Register Name
Unimplemented
See page 56.
See page 57.
See page 58.
See page 59.
See page 56.
See page 57.
See page 58.
See page 59.
(PORTC)
(PORTD)
(PORTB)
(PORTA)
Figure 2-3. I/O and Control Registers (Sheet 1 of 4)
(DDRA)
(DDRB)
(DDRC)
(DDRD)
Freescale Semiconductor, Inc.
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
For More Information On This Product,
DDRC7
DDRA7
DDRB7
Bit 7
PC7
PD7
PB7
PA7
0
0
0
0
0
Go to: www.freescale.com
= Unimplemented
DDRC6
DDRA6
DDRB6
PC6
PB6
PA6
Memory Map
6
0
0
0
0
0
0
DDRA5
DDRB5
DDRC5
DDRD5
PC5
PD5
PB5
PA5
5
0
0
0
0
DDRA4
DDRC4
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
PC4
PA4
R
4
0
1
0
1
0
0
0
0
= Reserved
DDRA3
DDRC3
PC3
PA3
3
0
0
0
1
0
0
0
0
DDRA2
DDRC2
I/O and Control Registers
PC2
PA2
2
0
0
0
1
0
0
0
0
U = Unaffected
DDRA1
DDRC1
PC1
Technical Data
PA1
1
0
0
0
1
0
0
0
0
Memory Map
DDRA0
DDRC0
Bit 0
PC0
PA0
0
0
0
1
0
0
0
0