MC908AB32CFUE Datasheet, PDF (45/392 Pages) Freescale Semiconductor, Inc – Microcontrollers

Memory Map
Addr.
Register Name
Bit 7
6
5
$0000
Read:
Port A Data Register
(PTA)
Write:
Reset:
PTA7
PTA6
PTA5
$0001
Read:
Port B Data Register
(PTB)
Write:
Reset:
PTB7
PTB6
PTB5
$0002
Read: 0
Port C Data Register
(PTC)
Write:
Reset:
0
PTC5
$0003
Read:
Port D Data Register
(PTD)
Write:
Reset:
PTD7
PTD6
PTD5
Read:
$0004
Data Direction Register A
(DDRA)
Write:
Reset:
DDRA7
0
DDRA6
0
DDRA5
0
Read:
$0005
Data Direction Register B
(DDRB)
Write:
Reset:
DDRB7
0
DDRB6
0
DDRB5
0
Read:
0
$0006
Data Direction Register C
(DDRC)
Write:
MCLKEN
Reset: 0
0
DDRC5
0
Read:
$0007
Data Direction Register D
(DDRD)
Write:
Reset:
DDRD7
0
DDRD6
0
DDRD5
0
$0008
Read:
Port E Data Register
(PTE)
Write:
Reset:
PTE7
PTE6
PTE5
$0009
Read:
Port F Data Register
(PTF)
Write:
Reset:
PTF7
PTF6
PTF5
= Unimplemented
4
3
2
1
PTA4 PTA3 PTA2 PTA1
Unaffected by reset
PTB4 PTB3 PTB2 PTB1
Unaffected by reset
PTC4 PTC3 PTC2 PTC1
Unaffected by reset
PTD4 PTD3 PTD2 PTD1
Unaffected by reset
DDRA4 DDRA3 DDRA2 DDRA1
0
0
0
0
DDRB4 DDRB3 DDRB2 DDRB1
0
0
0
0
DDRC4 DDRC3 DDRC2 DDRC1
0
0
0
0
DDRD4 DDRD3 DDRD2 DDRD1
0
0
0
0
PTE4 PTE3 PTE2 PTE1
Unaffected by reset
PTF4 PTF3 PTF2 PTF1
Unaffected by reset
R = Reserved
Bit 0
PTA0
PTB0
PTC0
PTD0
DDRA0
0
DDRB0
0
DDRC0
0
DDRD0
0
PTE0
PTF0
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 11)
MC68HC908AB32 — Rev. 1.1
Freescale Semiconductor
Memory Map
Technical Data
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