MC68HC908GT16 Datasheet, PDF (49/412 Pages) Motorola, Inc – Microcontrollers

Memory Map
Input/Output (I/O) Section
Addr.
Register Name
Bit 7
6
5
4
3
2
1
$0000
Port A Data Register ^Read:
(PTA) Write:
See page 229. _Reset:
PTA7
PTA6
PTA5 PTA4 PTA3 PTA2
Unaffected by reset
PTA1
$0001
Port B Data Register ^Read:
(PTB) Write:
See page 233. _Reset:
PTB7
PTB6
PTB5 PTB4 PTB3 PTB2
Unaffected by reset
PTB1
$0002
Port C Data Register ^{Read: 0}
(PTC) Write:
See page 236. _Reset:
PTC6
PTC5 PTC4 PTC3 PTC2
Unaffected by reset
PTC1
$0003
Port D Data Register ^Read:
(PTD) Write:
See page 240. _Reset:
PTD7
PTD6
PTD5 PTD4 PTD3 PTD2
Unaffected by reset
PTD1
$0004
Data Direction Register A ^Read:
(DDRA) Write:
See page 230. _Reset:
DDRA7
0
DDRA6
0
DDRA5
0
DDRA4
0
DDRA3
0
DDRA2
0
DDRA1
0
$0005
Data Direction Register B ^Read:
(DDRB) Write:
See page 234. _Reset:
DDRB7
0
DDRB6
0
DDRB5
0
DDRB4
0
DDRB3
0
DDRB2
0
DDRB1
0
Data Direction Register C ^{Read: 0}
$0006
(DDRC) Write:
See page 237. _{Reset: 0}
DDRC6 DDRC5 DDRC4 DDRC3 DDRC2 DDRC1
0
0
0
0
0
0
$0007
Data Direction Register D ^Read:
(DDRD) Write:
See page 242. _Reset:
DDRD7
0
DDRD6
0
DDRD5
0
DDRD4
0
DDRD3
0
DDRD2
0
DDRD1
0
Port E Data Register ^{Read: 0}
0
0
PTE4 PTE3 PTE2 PTE1
$0008
(PTE) Write:
See page 245. _Reset:
Unaffected by reset
$0009
ESCI Prescaler Register ^Read:
(SCPSC) Write:
See page 286. _Reset:
PDS2
0
PDS1
0
PDS0 PSSB4 PSSB3 PSSB2 PSSB1
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
PSSB0
0
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 9)
MC68HC908GT16 • MC68HC908GT8 — Rev. 2
MOTOROLA
Memory Map
Technical Data
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