MC68HC908GP32 Datasheet, PDF (49/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Freescale Semiconductor, Inc.
Memory Map
Input/Output (I/O) Section
Addr. Register Name
Bit 7
6
5
4
3
2
1
$0000
Read:
Port A Data Register
(PTA)
Write:
Reset:
PTA7
PTA6
PTA5 PTA4 PTA3 PTA2
Unaffected by reset
PTA1
$0001
Read:
Port B Data Register
(PTB)
Write:
Reset:
PTB7
PTB6
PTB5 PTB4 PTB3 PTB2
Unaffected by reset
PTB1
$0002
Read: 0
Port C Data Register
(PTC)
Write:
Reset:
PTC6
PTC5 PTC4 PTC3 PTC2
Unaffected by reset
PTC1
$0003
Read:
Port D Data Register
(PTD)
Write:
Reset:
PTD7
PTD6
PTD5 PTD4 PTD3 PTD2
Unaffected by reset
PTD1
Read:
$0004
Data Direction Register A
(DDRA)
Write:
Reset:
DDRA7
0
DDRA6
0
DDRA5
0
DDRA4
0
DDRA3
0
DDRA2
0
DDRA1
0
Read:
$0005
Data Direction Register B
(DDRB)
Write:
Reset:
DDRB7
0
DDRB6
0
DDRB5
0
DDRB4
0
DDRB3
0
DDRB2
0
DDRB1
0
Read: 0
$0006
Data Direction Register C
(DDRC)
Write:
Reset: 0
DDRC6 DDRC5 DDRC4 DDRC3 DDRC2 DDRC1
0
0
0
0
0
0
Read:
$0007
Data Direction Register D
(DDRD)
Write:
Reset:
DDRD7
0
DDRD6
0
DDRD5
0
DDRD4
0
DDRD3
0
DDRD2
0
DDRD1
0
Read: 0
0
0
0
0
0
$0008
Port E Data Register
(PTE)
Write:
PTE1
Reset:
Unaffected by reset
Read:
$0009
Unimplemented Write:
Reset: 0
0
0
0
0
0
0
= Unimplemented R = Reserved
U = Unaffected
Bit 0
PTA0
PTB0
PTC0
PTD0
DDRA0
0
DDRB0
0
DDRC0
0
DDRD0
0
PTE0
0
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 8)
MC68HC908GP32•MC68HC08GP32 — Rev. 6
MOTOROLA
Memory Map
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Technical Data
47