MC68HC908EY16 Datasheet, PDF (27/278 Pages) Motorola, Inc – Microcontrollers

Input/Output (I/O) Section
Addr.
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
Register Name
Bit 7
Port A Data Register ^Read:
0
(PTA) Write:
See page 115. _Reset:
Port B Data Register ^Read:
(PTB) Write:
See page 117. _Reset:
PTB7
Port C Data Register ^Read:
0
(PTC) Write:
See page 119. _Reset:
Port D Data Register Read: 0
(PTD) _Write:
See page 120.
Reset:
Data Direction ^Read:
0
Register A (DDRA) Write:
See page 115. _Reset:
0
Data Direction ^Read:
Register B (DDRB) Write:
See page 118. _Reset:
DDRB7
0
Data Direction ^Read:
Register C (DDRC) Write:
See page 119. _Reset:
MCLKEN
0
Data Direction Read: 0
Register D (DDRD) _Write:
See page 121.
Reset: 0
Port E Data Register ^Read:
0
(PTE) Write:
See page 122. _Reset:
Reserved
R
6
PTA6
PTB6
0
0
DDRA6
0
DDRB6
0
0
0
0
0
0
R
5
PTA5
PTB5
0
0
DDRA5
0
DDRB5
0
0
0
0
0
0
R
4
3
PTA4
PTA3
Unaffected by reset
PTB4
PTB3
Unaffected by reset
PTC4
PTC3
Unaffected by reset
0
0
Unaffected by reset
DDRA4 DDRA3
0
0
DDRB4 DDRB3
0
0
DDRC4 DDRC3
0
0
0
0
0
0
0
0
Unaffected by reset
R
R
2
PTA2
1
PTA1
Bit 0
PTA0
PTB2
PTB1
PTB0
PTC2
PTC1
PTC0
0
PTD1
PTD0
DDRA2 DDRA1 DDRA0
0
0
0
DDRB2 DDRB1 DDRB0
0
0
0
DDRC2 DDRC1 DDRC0
0
0
0
0
DDRD1 DDRD0
0
0
0
0
PTE1
PTE0
R
R
R
$000A
$000B
Data Direction ^Read:
Register E (DDRE) Write:
See page 123. _Reset:
BEMF Register ^Read:
(BEMF) Write:
See page 55. _Reset:
0
0
BEMF7
0
0
0
0
0
0
BEMF6
0
BEMF5
0
BEMF4
0
BEMF3
0
0
= Unimplemented
0
0
R = Reserved
0
0
BEMF2
DDRE1
0
BEMF1
0
0
U = Unaffected
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 7)
DDRE0
0
BEMF0
0
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
Freescale Semiconductor
27