mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 230

• Manufacturer Part Number: mc68hc908bd48
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Input/Output (I/O) Ports
Data Sheet
230
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
Data Direction Register C
Data Direction Register A
Data Direction Register B
Register Name
Port C Data Register
Port D Data Register
Port A Data Register
Port B Data Register
NOTE:
(DDRC)
(DDRA)
(DDRB)
(PTA)
(PTB)
(PTC)
(PTD)
Connect any unused I/O pins to an appropriate logic level, either V
V
operation, termination reduces excess current consumption and the
possibility of electrostatic damage.
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
SS
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Table 17-1. I/O Port Register Summary
. Although the I/O ports do not require termination for proper
DDRA7
DDRB7
PTA7
PTB7
Bit 7
0
0
0
0
0
0
Input/Output (I/O) Ports
= Unimplemented
DDRA6
DDRB6
PTD6
PTA6
PTB6
6
0
0
0
0
0
DDRA5
DDRB5
DDRC5
PTA5
PTB5
PTC5
PTD5
5
0
0
0
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
DDRA4
DDRB4
DDRC4
PTA4
PTB4
PTC4
PTD4
4
0
0
0
DDRA3
DDRB3
DDRC3
PTA3
PTB3
PTC3
PTD3
3
0
0
0
MC68HC908BD48
DDRC2
DDRA2
DDRB2
PTA2
PTB2
PTC2
PTD2
Freescale Semiconductor
0
0
0
2
DDRC1
DDRA1
DDRB1
PTA1
PTB1
PTC1
PTD1
1
0
0
0
—
DDRC0
Rev. 2.1
DDRA0
DDRB0
PTA0
PTB0
PTC0
PTD0
Bit 0
DD
0
0
0
or