mc68hc908jb8 Freescale Semiconductor, Inc, mc68hc908jb8 Datasheet - Page 200

• Manufacturer Part Number: mc68hc908jb8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Input/Output Ports (I/O)
Technical Data
200
* DDRA7 bit is reset by POR or LVI reset only.
Addr.
$0000
$0001
$0002
$0003
$0004 Data Direction Register A
$0005 Data Direction Register B
$0006 Data Direction Register C
$0007 Data Direction Register D
$0008
Register Name
Port C Data Register
Port D Data Register
Port A Data Register
Port B Data Register
Port E Data Register
NOTE:
(DDRC)
(DDRD)
(DDRA)
(DDRB)
(PTA)
(PTB)
(PTC)
(PTD)
(PTE)
Connect any unused I/O pins to an appropriate logic level, either V
or V
operation, termination reduces excess current consumption and the
possibility of electrostatic damage.
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Figure 12-1. I/O Port Register Summary
SS
. Although the I/O ports do not require termination for proper
DDRA7
DDRB7
DDRC7
DDRD7
PTC7
PTD7
PTA7
PTB7
Bit 7
0*
0
0
0
0
Input/Output Ports (I/O)
= Unimplemented
DDRA6
DDRB6
DDRC6
DDRD6
PTA6
PTB6
PTC6
PTD6
6
0
0
0
0
0
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
DDRA5
DDRB5
DDRC5
DDRD5
PTA5
PTB5
PTC5
PTD5
5
0
0
0
0
0
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
DDRA4
DDRB4
DDRC4
DDRD4
Unaffected by reset
PTA4
PTB4
PTC4
PTD4
PTE4
4
0
0
0
0
DDRA3
DDRB3
DDRC3
DDRD3
PTA3
PTB3
PTC3
PTD3
PTE3
3
0
0
0
0
DDRA2
DDRB2
DDRC2
DDRD2
PTA2
PTB2
PTC2
PTD2
PTE2
Freescale Semiconductor
2
0
0
0
0
DDRC1
DDRD1
DDRA1
DDRB1
PTA1
PTB1
PTC1
PTD1
PTE1
1
0
0
0
0
DDRC0
DDRD0
DDRA0
DDRB0
PTA0
PTB0
PTC0
PTD0
PTE0
Bit 0
REG
0
0
0
0