MC68HC908AS32A Datasheet, PDF (32/280 Pages) Freescale Semiconductor, Inc – Microcontrollers

Memory
Addr.
$0005
$0006
$0007
$0008
$0009
$000A
$000B
$000C
$000D
$000E
$000F
$0010
$0011
$0012
32
Register Name
Bit 7
Data Direction Register B ^Read:
(DDRB) Write:
See page 153. _Reset:
DDRB7
0
Data Direction Register C
(DDRC)
See page 155.
Read:
Write:
Reset:
MCLKEN
0
Data Direction Register D ^Read:
0
(DDRD) Write:
See page 158. _Reset:
0
Port E Data Register ^Read:
(PTE) Write:
See page 159. _Reset:
PTE7
Port F Data Register ^Read:
0
(PTF) Write:
See page 161. _Reset:
Reserved
R
6
DDRB6
0
0
0
DDRD6
0
PTE6
0
R
5
DDRB5
0
0
0
DDRD5
0
PTE5
0
R
4
3
DDRB4 DDRB3
0
0
DDRC4 DDRC3
0
0
DDRD4 DDRD3
0
0
PTE4
PTE3
Unaffected by reset
0
PTF3
Unaffected by reset
R
R
2
DDRB2
0
DDRC2
0
DDR2
0
PTE2
PTF2
R
1
DDRB1
0
DDRC1
0
DDRD1
0
PTE1
PTF1
R
Bit 0
DDRB0
0
DDRC0
0
DDRD0
0
PTE0
PTF0
R
Reserved
R
R
R
R
R
R
R
R
Data Direction Register E ^Read:
(DDRE) Write:
See page 160. _Reset:
Data Direction Register F ^Read:
(DDRF) Write:
See page 162. _Reset:
Reserved
DDRE7
0
0
0
R
DDRE6
0
0
0
R
DDRE5
0
0
0
R
DDRE4
0
0
0
R
DDRE3
0
DDRF3
0
R
DDRE2
0
DDRF2
0
R
DDRE1
0
DDRF1
0
R
DDRE0
0
DDRF0
0
R
Reserved
R
R
R
R
R
R
R
R
SPI Control Register ^Read:
(SPCR) Write:
See page 221. _Reset:
SPI Status and Control ^Read:
Register (SPSCR) Write:
See page 223. _Reset:
SPI Data Register ^Read:
(SPDR) Write:
See page 225. _Reset:
SPRIE
0
SPRF
0
R7
T7
R
SPMSTR CPOL CPHA SPWOM SPE
0
ERRIE
1
OVRF
0
MODF
1
SPTE
0
MODFEN
0
SPR1
0
0
R6
R5
T6
T5
= Unimplemented
0
1
R4
R3
T4
T3
Indeterminate after reset
R
= Reserved
0
0
R2
R1
T2
T1
U = Unaffected
Figure 2-2. I/O Data, Status and Control Registers (Sheet 2 of 6)
SPTIE
0
SPR0
0
R0
T0
MC68HC908AS32A Data Sheet, Rev. 2.0
Freescale Semiconductor