MC68HC908GP20 Datasheet, PDF (223/406 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Addr. Register Name
Bit 7
Read:
$0005
Data Direction Register B
(DDRB)
Write:
Reset:
DDRB7
0
Read: 0
$0006
Data Direction Register C
(DDRC)
Write:
Reset: 0
6
DDRB6
0
DDRC6
0
5
DDRB5
0
DDRC5
0
4
DDRB4
0
DDRC4
0
3
DDRB3
0
DDRC3
0
2
DDRB2
0
DDRC2
0
1
DDRB1
0
DDRC1
0
Bit 0
DDRB0
0
DDRC0
0
Read:
$0007
Data Direction Register D
(DDRD)
Write:
Reset:
DDRD7
0
DDRD6
0
DDRD5
0
DDRD4
0
DDRD3
0
DDRD2
0
DDRD1
0
DDRD0
0
Read: 0
0
0
0
0
0
$0008
Port E Data Register
(PTE)
Write:
PTE1 PTE0
Reset:
Unaffected by reset
Read: 0
0
0
0
0
0
$000C
Data Direction Register E
(DDRE)
Write:
DDRE1 DDRE0
Reset: 0
0
0
0
0
0
0
0
Read:
$000D
Port
A Input Pullup Enable
Register (PTAPUE)
Write:
PTAPUE7
PTAPUE6
PTAPUE5
PTAPUE4
PTAPUE3
PTAPUE2
PTAPUE1
PTAPUE0
Reset: 0
0
0
0
0
0
0
0
Read: 0
$000E
Port C Input Pullup Enable
Register (PTCPUE)
Write:
PTCPUE6 PTCPUE5 PTCPUE4 PTCPUE3 PTCPUE2 PTCPUE1 PTCPUE0
Reset: 0
0
0
0
0
0
0
0
Read:
$000F
Port D Input Pullup Enable
Register (PTDPUE)
Write:
PTDPUE7
PTDPUE6
PTDPUE5
PTDPUE4
PTDPUE3
PTDPUE2
PTDPUE1
PTDPUE0
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 16-1. I/O Port Register Summary (Continued)
MC68HC908GP20 — Rev 2.1
Freescale Semiconductor
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