mc68hc908jb16 Freescale Semiconductor, Inc, mc68hc908jb16 Datasheet - Page 44

• Manufacturer Part Number: mc68hc908jb16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Memory Map
Technical Data
44
* DDRA7 bit is reset by POR or LVI reset only.
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
Data Direction Register A
Data Direction Register C
Data Direction Register D
Data Direction Register E
Register Name
Port A Data Register
Port C Data Register
Port D Data Register
Port E Data Register
U = Unaffected
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 12)
Reserved
Reserved
(DDRA)
(DDRC)
(DDRD)
(DDRE)
(PTC)
(PTD)
(PTA)
(PTE)
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
X = Indeterminate
DDRA7
PTA7
Bit 7
0*
R
R
0
0
0
0
0
0
0
0
0
DDRA6
PTA6
R
R
6
0
0
0
0
0
0
0
0
0
0
Memory Map
DDRA5
DDRD5
PTA5
PTD5
R
R
5
0
0
0
0
0
0
0
0
= Unimplemented
Unaffected by reset
Unaffected by reset
Unaffected by reset
DDRA4
DDRD4
Unaffected by reset
DDRE4
PTA4
PTD4
PTE4
R
R
4
0
0
0
0
0
0
DDRA3
DDRD3
DDRE3
PTA3
PTD3
PTE3
R
R
3
0
0
0
0
0
0
MC68HC908JB16
DDRD2
DDRA2
DDRE2
PTA2
PTD2
PTE2
Freescale Semiconductor
R
R
R
0
0
0
0
0
0
2
= Reserved
DDRC1
DDRD1
DDRA1
DDRE1
PTA1
PTC1
PTD1
PTE1
R
R
1
0
0
0
0
—
DDRC0
DDRD0
Rev. 1.1
DDRA0
DDRE0
PTA0
PTC0
PTD0
PTE0
Bit 0
R
R
0
0
0
0