Datasheet

MC68HC908AZ60E
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
390 Freescale Semiconductor
B.3 I/O Section
Addresses $0000–$004F, shown in Figure B-2, contain the I/O Data, Status, and Control Registers.
Differences from the MC68HC908AZ60A are shown in bold text.
Addr.Register Name Bit 7654321Bit 0
$0000
Port A Data Register
(PTA)
Read:
PTA7 PTA6 PTA5 PTA4 PTA3 PTA2 PTA1 PTA0
Write:
$0001
Port B Data Register
(PTB)
Read:
PTB7 PTB6 PTB5 PTB4 PTB3 PTB2 PTB1 PTB0
Write:
$0002
Port C Data Register
(PTC)
Read: 0 0
PTC5 PTC4 PTC3 PTC2 PTC1 PTC0
Write:
$0003
Port D Data Register
(PTD)
Read:
PTD7 PTD6 PTD5 PTD4 PTD3 PTD2 PTD1 PTD0
Write:
$0004
Data Direction Register A
(DDRA)
Read:
DDRA7 DDRA6 DDRA5 DDRA4 DDRA3 DDRA2 DDRA1 DDRA0
Write:
$0005
Data Direction Register B
(DDRB)
Read:
DDRB7 DDRB6 DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0
Write:
$0006
Data Direction Register C
(DDRC)
Read:
MCLKEN
0
DDRC5 DDRC4 DDRC3 DDRC2 DDRC1 DDRC0
Write:
$0007
Data Direction Register D
(DDRD)
Read:
DDRD7 DDRD6 DDRD5 DDRD4 DDRD3 DDR2 DDRD1 DDRD0
Write:
$0008
Port E Data Register
(PTE)
Read:
PTE7 PTE6 PTE5 PTE4 PTE3 PTE2 PTE1 PTE0
Write:
$0009
Port F Data Register
(PTF)
Read: 0
PTF6 PTF5 PTF4 PTF3 PTF2 PTF1 PTF0
Write:
$000A
Port G Data Register
(PTG)
Read:00000
PTG2 PTG1 PTG0
Write:
$000B
Port H Data Register
(PTH)
Read:000000
PTH1 PTH0
Write:
$000C
Data Direction Register E
(DDRE)
Read:
DDRE7 DDRE6 DDRE5 DDRE4 DDRE3 DDRE2 DDRE1 DDRE0
Write:
$000D
Data Direction Register F
(DDRF)
Read: 0
DDRF6 DDRF5 DDRF4 DDRF3 DDRF2 DDRF1 DDRF0
Write:
$000E
Data Direction Register G
(DDRG)
Read:00000
DDRG2 DDRG1 DDRG0
Write:
$000F
Data Direction Register H
(DDRH)
Read:000000
DDRH1 DDRH0
Write:
$0010
SPI Control Register
(SPCR)
Read:
SPRIE R SPMSTR CPOL CPHA SPWOM SPE SPTIE
Write:
$0011
SPI Status and Control
Register (SPSCR)
Read: SPRF
ERRIE
OVRF MODF SPTE
MODFEN SPR1 SPR0
Write:
= Unimplemented R = Reserved
Figure B-2. I/O Data, Status and Control Registers (Sheet 1 of 4)