MC68HC908GR8A_07 Datasheet, PDF (30/260 Pages) Freescale Semiconductor, Inc – Microcontrollers

Memory
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
↓
$000B
$000C
Register Name
Bit 7
Port A Data Register ^Read:
0
(PTA) Write:
See page 117. _Reset:
Port B Data Register ^Read:
0
(PTB) Write:
See page 120. _Reset:
Port C Data Register ^Read:
0
(PTC) Write:
See page 122. _Reset:
Port D Data Register ^Read:
0
(PTD) Write:
See page 124. _Reset:
Data Direction Register A ^Read:
0
(DDRA) Write:
See page 118. _Reset:
0
Data Direction Register B ^Read:
0
(DDRB) Write:
See page 120. _Reset:
0
Data Direction Register C ^Read:
0
(DDRC) Write:
See page 122. _Reset:
0
Data Direction Register D ^Read:
0
(DDRD) Write:
See page 125. _Reset:
0
Port E Data Register ^Read:
0
(PTE) Write:
See page 127. _Reset:
Read:
R
Reserved Write:
Reset: 0
Data Direction Register E ^Read:
0
(DDRE) Write:
See page 128. _Reset:
0
6
5
4
3
2
1
Bit 0
0
0
0
PTA3
PTA2
PTA1
PTA0
Unaffected by reset
0
PTB5
PTB4
PTB3
PTB2
PTB1
PTB0
Unaffected by reset
0
0
0
0
0
PTC1
PTC0
Unaffected by reset
PTD6
PTD5
PTD4
PTD3
PTD2
PTD1
PTD0
Unaffected by reset
0
0
0
DDRA3 DDRA2 DDRA1 DDRA0
0
0
0
0
0
0
0
0
DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0
0
0
0
0
0
0
0
0
0
0
0
0
DDRC1 DDRC0
0
0
0
0
0
0
0
DDRD6 DDRD5 DDRD4 DDRD3 DDRD2 DDRD1 DDRD0
0
0
0
0
0
0
0
0
0
0
0
0
PTE1
PTE0
Unaffected by reset
R
R
R
R
R
R
R
0
0
0
0
0
0
0
0
0
0
0
0
DDRE1 DDRE0
0
0
0
0
0
0
0
= Unimplemented
R = Reserved
U = Unaffected
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 7)
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
30
Freescale Semiconductor