MC68HC08LT8 Datasheet, PDF (94/156 Pages) Freescale Semiconductor, Inc – Microcontrollers

Input/Output (I/O) Ports
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
$000C
Register Name
Bit 7
6
Read:
Port A Data Register
(PTA)
Write:
Reset:
PTA7
PTA6
Read:
Port B Data Register
(PTB)
Write:
Reset:
PTB7
PTB6
Read:
Port C Data Register
(PTC)
Write:
Reset:
PTC7
PTC6
Read:
Port D Data Register
(PTD)
Write:
Reset:
PTD7
PTD6
Read:
Data Direction Register A
(DDRA)
Write:
Reset:
DDRA7
0
DDRA6
0
Read:
Data Direction Register B
(DDRB)
Write:
Reset:
DDRB7
0
DDRB6
0
Read:
Data Direction Register C
(DDRC)
Write:
Reset:
DDRC7
0
DDRC6
0
Read:
Data Direction Register D
(DDRD)
Write:
Reset:
DDRD7
0
DDRD6
0
Read:
Data Direction Register E
(DDRE)
Write:
Reset:
DDRE7
0
DDRE6
0
Read:
Port E Data Register
(PTE)
Write:
Reset:
PTE7
PTE6
Port-B High Current Drive ^Read:
R
Control Register Write:
(HDB)
Reset:
PPI1L
U = Unaffected
X = Indeterminate
5
4
3
PTA5
PTA4
PTA3
Unaffected by reset
0
0
PTB3
Unaffected by reset
PTC5
PTC4
PTC3
Unaffected by reset
PTD5
PTD4
PTD3
Unaffected by reset
DDRA5 DDRA4 DDRA3
0
0
0
0
0
DDRB3
0
0
0
DDRC5 DDRC4 DDRC3
0
0
0
DDRD5 DDRD4 DDRD3
0
0
0
DDRE5 DDRE4 DDRE3
0
0
0
PTE5
PTE4
PTE3
Unaffected by reset
HDB5
HDB4
HDB3
0
0
0
= Unimplemented
2
PTA2
1
PTA1
Bit 0
PTA0
PTB2
PTB1
PTB0
PTC2
PTC1
PTC0
PTD2
PTD1
PTD0
DDRA2 DDRA1 DDRA0
0
0
0
DDRB2 DDRB1 DDRB0
0
0
0
DDRC2 DDRC1 DDRC0
0
0
0
DDRD2 DDRD1 DDRD0
0
0
0
DDRE2 DDRE1 DDRE0
0
0
0
PTE2
PTE1
PTE0
HDB2 PPI1CLKS1 PPI1CLKS0
0
0
0
R
= Reserved
Figure 9-1. I/O Port Register Summary
MC68HC08LT8 Data Sheet, Rev. 1
94
Freescale Semiconductor