mc68hc908gr8b Freescale Semiconductor, Inc, mc68hc908gr8b Datasheet - Page 28

• Manufacturer Part Number: mc68hc908gr8b
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Memory
28
$000B
$000C
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
Addr.
Data Direction Register C
Data Direction Register D
Data Direction Register A
Data Direction Register B
Data Direction Register E
Register Name
Port C Data Register
Port D Data Register
Port A Data Register
Port B Data Register
Port E Data Register
See page 115.
See page 118.
See page 120.
See page 122.
See page 116.
See page 118.
See page 120.
See page 123.
See page 125.
See page 126.
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 7)
Reserved
(DDRC)
(DDRD)
(DDRA)
(DDRB)
(DDRE)
(PTC)
(PTD)
(PTA)
(PTB)
(PTE)
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
MC68HC908GR8B Data Sheet, Rev. 3.0
Bit 7
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
= Unimplemented
DDRD6
PTD6
R
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
DDRD5
DDRB5
PTB5
PTD5
R
5
0
0
0
0
0
0
0
0
0
0
0
0
DDRB4
DDRD4
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
PTB4
PTD4
R
R
4
0
0
0
0
0
0
0
0
0
0
0
0
= Reserved
DDRA3
DDRB3
DDRD3
PTA3
PTB3
PTD3
R
3
0
0
0
0
0
0
0
0
0
0
DDRA2
DDRB2
DDRD2
PTA2
PTD2
PTB2
R
2
0
0
0
0
0
0
0
0
0
0
Freescale Semiconductor
U = Unaffected
DDRC1
DDRD1
DDRA1
DDRB1
DDRE1
PTA1
PTB1
PTC1
PTD1
PTE1
R
1
0
0
0
0
0
0
DDRC0
DDRD0
DDRA0
DDRB0
DDRE0
PTA0
PTB0
PTC0
PTD0
PTE0
Bit 0
R
0
0
0
0
0
0