MC68HC08LT8 Datasheet, PDF (21/156 Pages) Freescale Semiconductor, Inc – Microcontrollers

Monitor ROM
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
Register Name
Bit 7
Read:
Port A Data Register
(PTA)
Write:
Reset:
PTA7
Read:
Port B Data Register
(PTB)
Write:
Reset:
PTB7
Read:
Port C Data Register
(PTC)
Write:
Reset:
PTC7
Read:
Port D Data Register
(PTD)
Write:
Reset:
PTD7
Read:
Data Direction Register A
(DDRA)
Write:
Reset:
DDRA7
0
Read:
Data Direction Register B
(DDRB)
Write:
Reset:
DDRB7
0
Read:
Data Direction Register C
(DDRC)
Write:
Reset:
DDRC7
0
Read:
Data Direction Register D
(DDRD)
Write:
Reset:
DDRD7
0
Read:
Data Direction Register E
(DDRE)
Write:
Reset:
DDRE7
0
Read:
Port E Data Register
(PTE)
Write:
Reset:
PTE7
6
PTA6
PTB6
PTC6
PTD6
DDRA6
0
DDRB6
0
DDRC6
0
DDRD6
0
DDRE6
0
PTE6
5
PTA5
0
PTC5
PTD5
DDRA5
0
0
0
DDRC5
0
DDRD5
0
DDRE5
0
PTE5
4
3
PTA4
PTA3
Unaffected by reset
0
PTB3
Unaffected by reset
PTC4
PTC3
Unaffected by reset
PTD4
PTD3
Unaffected by reset
DDRA4 DDRA3
0
0
0
DDRB3
0
0
DDRC4 DDRC3
0
0
DDRD4 DDRD3
0
0
DDRE4 DDRE3
0
0
PTE4
PTE3
Unaffected by reset
2
PTA2
PTB2
PTC2
PTD2
DDRA2
0
DDRB2
0
DDRC2
0
DDRD2
0
DDRE2
0
PTE2
1
PTA1
PTB1
PTC1
PTD1
DDRA1
0
DDRB1
0
DDRC1
0
DDRD1
0
DDRE1
0
PTE1
Bit 0
PTA0
PTB0
PTC0
PTD0
DDRA0
0
DDRB0
0
DDRC0
0
DDRD0
0
DDRE0
0
PTE0
$000A
Unimplemented
U = Unaffected
X = Indeterminate
= Unimplemented
R
= Reserved
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 7)
MC68HC08LT8 Data Sheet, Rev. 1
Freescale Semiconductor
21