MC908AP16CFAE Datasheet, PDF (31/324 Pages) Freescale Semiconductor, Inc – Table of Contents

Monitor ROM
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
$000A
$000B
$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:
PTC7
PTC6
Reset:
Read:
Port D Data Register (PTD) Write:
PTD7
PTD6
Reset:
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:
Unimplemented _Write:
Reset:
Read:
Unimplemented Write:
Reset:
Read:
Unimplemented Write:
Reset:
Read:
Unimplemented Write:
Reset:
Port-A LED Control ^Read:
Register Write:
(LEDA) _Reset:
LEDA7
0
LEDA6
0
U = Unaffected
X = Indeterminate
5
PTA5
PTB5
PTC5
PTD5
DDRA5
0
DDRB5
0
DDRC5
0
DDRD5
0
4
3
PTA4
PTA3
Unaffected by reset
PTB4
PTB3
Unaffected by reset
PTC4
PTC3
Unaffected by reset
PTD4
PTD3
Unaffected by reset
DDRA4 DDRA3
0
0
DDRB4 DDRB3
0
0
DDRC4 DDRC3
0
0
DDRD4 DDRD3
0
0
LEDA5 LEDA4 LEDA3
0
0
0
= Unimplemented
2
PTA2
1
PTA1
Bit 0
PTA0
PTB2
PTB1
PTB0
PTC2
PTC1
PTC0
PTD2
PTD1
PTD0
DDRA2
0
DDRB2
0
DDRC2
0
DDRD2
0
DDRA1
0
DDRB1
0
DDRC1
0
DDRD1
0
DDRA0
0
DDRB0
0
DDRC0
0
DDRD0
0
LEDA2 LEDA1 LEDA0
0
0
0
R = Reserved
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 9)
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor
31