MC68HC908GZ8 Datasheet, PDF (200/344 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Input/Output (I/O) Ports
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$0004
Read:
Data Direction Register A
(DDRA) Write:
See page 202. _Reset:
DDRA7
0
DDRA6
0
DDRA5
0
DDRA4
0
DDRA3
0
DDRA2
0
DDRA1
0
DDRA0
0
$0005
Data Direction Register B ^Read:
(DDRB) Write:
See page 205. _Reset:
DDRB7
0
DDRB6
0
DDRB5
0
DDRB4
0
DDRB3
0
DDRB2
0
DDRB1
0
DDRB0
0
Data Direction Register C ^Read:
0
$0006
(DDRC) Write:
See page 208.
Reset: 0
DDRC6 DDRC5 DDRC4 DDRC3 DDRC2 DDRC1 DDRC0
0
0
0
0
0
0
0
$0007
Read:
Data Direction Register D
(DDRD) Write:
See page 211. _Reset:
DDRD7
0
DDRD6
0
DDRD5
0
DDRD4
0
DDRD3
0
DDRD2
0
DDRD1
0
DDRD0
0
Read: 0
$0008
Port E Data Register (PTE)
See page 213.
Write:
Reset:
0
PTE5
PTE4
PTE3
PTE2
PTE1
PTE0
Unaffected by reset
Data Direction Register E ^Read:
0
$000C
(DDRE) Write:
See page 214.
Reset: 0
0
DDRE5 DDRE4 DDRE3 DDRE2 DDRE1 DDRE0
0
0
0
0
0
0
0
$000D
Read:
Port A Input Pullup Enable
PTAPUE7
Register (PTAPUE) Write:
See page 204. _Reset:
0
PTAPUE6
0
PTAPUE5
0
PTAPUE4
0
PTAPUE3
0
PTAPUE2
0
PTAPUE1
0
PTAPUE0
0
Port C Input Pullup Enable ^Read:
0
$000E
Register (PTCPUE) Write:
See page 209. _Reset:
0
PTCPUE6 PTCPUE5 PTCPUE4 PTCPUE3 PTCPUE2 PTCPUE1 PTCPUE0
0
0
0
0
0
0
0
$000F
Port D Input Pullup Enable ^Read: _PTDPUE7
Register (PTDPUE) Write:
See page 213.
Reset: 0
PTDPUE6
0
PTDPUE5
0
PTDPUE4
0
PTDPUE3
0
PTDPUE2
0
PTDPUE1
0
PTDPUE0
0
= Unimplemented
Figure 17-1. I/O Port Register Summary (Continued)
Data Sheet
200
Input/Output (I/O) Ports
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MC68HC908GZ8
MOTOROLA