MC68HC908GR8A_07 Datasheet, PDF (116/260 Pages) Freescale Semiconductor, Inc – Microcontrollers

Input/Output (I/O) Ports
Addr.
$0005
$0006
$0007
$0008
$000C
$000D
$000E
$000F
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
Data Direction Register B ^Read:
0
(DDRB) Write:
See page 120. _Reset:
0
0
DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0
0
0
0
0
0
0
0
Data Direction Register C ^Read:
0
0
0
0
0
0
DDRC1 DDRC0
(DDRC) Write:
See page 122. _Reset:
0
0
0
0
0
0
0
0
Data Direction Register D ^Read:
0
(DDRD) Write:
See page 125. _Reset:
0
DDRD6 DDRD5 DDRD4 DDRD3 DDRD2 DDRD1 DDRD0
0
0
0
0
0
0
0
Port E Data Register ^Read:
0
0
0
0
0
0
PTE1
PTE0
(PTE) Write:
See page 127. _Reset:
Unaffected by reset
Data Direction Register E ^Read:
0
0
0
0
0
0
DDRE1 DDRE0
(DDRE) Write:
See page 128. _Reset:
0
0
0
0
0
0
0
0
Port A Input Pullup Enable ^Read:
0
0
0
0
PTAPUE3 PTAPUE2 PTAPUE1 PTAPUE0
Register (PTAPUE) Write:
See page 119. _Reset:
0
0
0
0
0
0
0
0
Port C Input Pullup Enable ^Read:
0
0
0
0
0
0
PTCPUE1 PTCPUE0
Register (PTCPUE) Write:
See page 124. _Reset:
0
0
0
0
0
0
0
0
Port D Input Pullup Enable ^Read:
0
Register (PTDPUE) Write:
See page 127. _Reset:
0
PTDPUE6 PTDPUE5 PTDPUE4 PTDPUE3 PTDPUE2 PTDPUE1 PTDPUE0
0
0
0
0
0
0
0
= Unimplemented
Figure 12-1. I/O Port Register Summary (Continued)
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
116
Freescale Semiconductor