Datasheet

Input/Output Ports (PORTS)
MC68HC908GR16 Data Sheet, Rev. 5.0
122 Freescale Semiconductor
$0005
Data Direction Register B
(DDRB)
See page 126.
Read:
DDRB7 DDRB6 DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0
Write:
Reset:00000000
$0006
Data Direction Register C
(DDRC)
See page 128.
Read: 0
DDRC6 DDRC5 DDRC4 DDRC3 DDRC2 DDRC1 DDRC0
Write:
Reset:00000000
$0007
Data Direction Register D
(DDRD)
See page 131.
Read:
DDRD7 DDRD6 DDRD5 DDRD4 DDRD3 DDRD2 DDRD1 DDRD0
Write:
Reset:00000000
$0008
Port E Data Register
(PTE)
See page 133.
Read: 0 0
PTE5 PTE4 PTE3 PTE2 PTE1 PTE0
Write:
Reset: Unaffected by reset
$000C
Data Direction Register E
(DDRE)
See page 134.
Read: 0 0
DDRE5 DDRE4 DDRE3 DDRE2 DDRE1 DDRE0
Write:
Reset:00000000
$000D
Port A Input Pullup Enable
Register (PTAPUE)
See page 125.
Read:
PTAPUE7 PTAPUE6 PTAPUE5 PTAPUE4 PTAPUE3 PTAPUE2 PTAPUE1 PTAPUE0
Write:
Reset:00000000
$000E
Port C Input Pullup Enable
Register (PTCPUE)
See page 129.
Read: 0
PTCPUE6 PTCPUE5 PTCPUE4 PTCPUE3 PTCPUE2 PTCPUE1 PTCPUE0
Write:
Reset:00000000
$000F
Port D Input Pullup Enable
Register (PTDPUE)
See page 132.
Read:
PTDPUE7 PTDPUE6 PTDPUE5 PTDPUE4 PTDPUE3 PTDPUE2 PTDPUE1 PTDPUE0
Write:
Reset:00000000
Addr.Register Name Bit 7654321Bit 0
= Unimplemented
Figure 12-1. I/O Port Register Summary (Continued)