mc68hc908mr8 Freescale Semiconductor, Inc, mc68hc908mr8 Datasheet - Page 280

• Manufacturer Part Number: mc68hc908mr8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Input/Output (I/O) Ports
Technical Data
280
$0000
$0001
$0002
$0003
$0004
$0005
$0006
Addr.
Data Direction Register C
Data Direction Register A
Data Direction Register B
Register Name
Port A Data Register
Port B Data Register
Port C Data Register
Unimplemented
See page 281.
See page 284.
See page 287.
See page 282.
See page 284.
See page 287.
(DDRC)
(DDRA)
(DDRB)
(PTC)
(PTA)
(PTB)
Figure 14-1. I/O Port Register Summary
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Input/Output (I/O) Ports
mented
= Unimple-
Bit 7
U
0
0
DDRA
DDRB
PTA6
PTB6
U
6
6
0
6
0
DDRA
DDRB
PTA5
PTB5
U
R
5
5
0
5
0
Unaffected by reset
Unaffected by reset
Unaffected by reset
DDRA
DDRB
= Reserved
PTA4
PTB4
U
4
4
0
4
0
DDRA
DDRB
PTA3
PTB3
U
3
3
0
3
0
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
DDRA
DDRB
PTA2
PTB2
U
U
2
2
0
2
0
DDRA
DDRB
DDRC
= Unaffected
PTC1
PTA1
PTB1
1
1
0
1
0
1
0
DDRA
DDRB
DDRC
PTC0
PTA0
PTB0
Bit 0
0
0
0
0
0
0