MC68HC705C8ACS

Manufacturer Part NumberMC68HC705C8ACS
ManufacturerFreescale Semiconductor, Inc
MC68HC705C8ACS datasheet
 


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Page 39/222:

DDRA7 DDRA6

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Freescale Semiconductor, Inc.
Addr.
Register Name
Read:
Port A Data Register
$0000
(PORTA)
See page 78.
Reset:
Read:
Port B Data Register
$0001
(PORTB)
See page 81.
Reset:
Read:
Port C Data Register
$0002
(PORTC)
See page 85.
Reset:
Read:
Port D Fixed Input Register
$0003
(PORTD)
See page 88.
Reset:
Read:
Port A Data Direction
$0004
Register (DDRA)
See page 79.
Reset:
Read:
Port B Data Direction
$0005
Register (DDRB)
See page 82.
Reset:
Read:
Port C Data Direction
$0006
(DDRC)
See page 86.
Reset:
$0007
Unimplemented
$0008
Unimplemented
$0009
Unimplemented
Figure 2-2. I/O Register Summary (Sheet 1 of 4)
MC68HC705C8A — Rev. 3
MOTOROLA
For More Information On This Product,
Bit 7
6
5
PA7
PA6
PA5
PA4
Write:
Unaffected by reset
PB7
PB6
PB5
PB4
Write:
Unaffected by reset
PC7
PC6
PC5
PC4
Write:
Unaffected by reset
PD7
SS
SCK
Write:
Unaffected by reset

DDRA7 DDRA6

DDRA5
DDRA4
Write:
0
0
0
DDRB7 DDRB6
DDRB5
DDRB4
Write:
0
0
0
DDRC7 DDRC6
DDRC5
DDRC4
Write:
0
0
0
= Unimplemented
U = Unaffected
Memory
Go to: www.freescale.com
Bootloader ROM
4
3
2
1
PA3
PA2
PA1
PB3
PB2
PB1
PC3
PC2
PC1
MOSI
MISO
TDO
DDRA3
DDRA2
DDRA1
0
0
0
0
DDRB3
DDRB2
DDRB1
0
0
0
0
DDRC3
DDRC2
DDRC1 DDRC0
0
0
0
0
Technical Data
Memory
Bit 0
PA0
PB0
PC0
RDI
DDRA0
0
DDRB0
0
0