MC68HC908JW32_09 Datasheet, PDF (27/232 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Monitor ROM
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
$000A
$000B
Register Name
Read:
Port A Data Register
(PTA)
Write:
Reset:
Read:
Port B Data Register
(PTB)
Write:
Reset:
Read:
Port C Data Register
(PTC)
Write:
Reset:
Read:
Port D Data Register
(PTD)
Write:
Reset:
Read:
Data Direction Register A
(DDRA)
Write:
Reset:
Read:
Data Direction Register B
(DDRB)
Write:
Reset:
Read:
Data Direction Register C
(DDRC)
Write:
Reset:
Read:
Data Direction Register D
(DDRD)
Write:
Reset:
Read:
Port E Data Register
(PTE)
Write:
Reset:
Read:
Data Direction Register E
(DDRE)
Write:
Reset:
Read:
Timer 1 Status and Control
Register (T1SC)
Write:
Reset:
Read:
Reserved Write:
Bit 7
PTA7
PTB7
PTD7
DDRA7
0
DDRB7
0
0
DDRD7
0
PTE7
DDRE7
0
TOF
0
0
R
6
PTA6
PTB6
PTD6
DDRA6
0
DDRB6
0
0
DDRD6
0
PTE6
DDRE6
0
TOIE
0
R
5
PTA5
PTB5
PTD5
DDRA5
0
DDRB5
0
0
DDRD5
0
PTE5
DDRE5
0
TSTOP
1
R
4
3
PTA4
PTA3
Unaffected by reset
PTB4
PTB3
Unaffected by reset
PTC3
Unaffected by reset
PTD4
PTD3
Unaffected by reset
DDRA4 DDRA3
0
0
DDRB4 DDRB3
0
0
DDRC3
0
0
DDRD4 DDRD3
0
0
PTE4
PTE3
Unaffected by reset
DDRE4 DDRE3
0
0
0
0
TRST
0
0
R
R
2
PTA2
PTB2
PTC2
PTD2
DDRA2
0
DDRB2
0
DDRC2
0
DDRD2
0
PTE2
DDRE2
0
PS2
0
R
1
PTA1
PTB1
PTC1
PTD1
DDRA1
0
DDRB1
0
DDRC1
0
DDRD1
0
0
PS1
0
R
Bit 0
PTA0
PTB0
PTC0
PTD0
DDRA0
0
DDRB0
0
DDRC0
0
DDRD0
0
0
PS0
0
R
$000C
Read: Bit15
Timer 1 Counter Register
High (T1CNTH)
Write:
Reset: 0
Bit14
Bit13
0
0
= Unimplemented
Bit12
Bit11
Bit10
Bit9
Bit8
0
0
0
0
0
R = Reserved
U = Unaffected by reset
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 7)
MC68HC908JW32 Data Sheet, Rev. 6
Freescale Semiconductor
27