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M68HC05 Datasheet(PDF) 30 Page - Freescale Semiconductor, Inc

Part # M68HC05
Description  Microcontrollers
PDF  118 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68HC05 Datasheet(HTML) 30 Page - Freescale Semiconductor, Inc

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Memory
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
30
Freescale Semiconductor
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$0000
Port A Data Register
(PORTA)
See page 47.
Read:
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Write:
Reset:
Unaffected by reset
$0001
Port B Data Register
(PORTB)
See page 48.
Read:
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Write:
Reset:
Unaffected by reset
$0002
Port C Data Register
(PORTC)
See page 48.
Read:
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Write:
Reset:
Unaffected by reset
$0003
Port D Data Register
(PORTD)
See page 48.
Read:
PD7
PD5
PD4
PD3
PD2
PD1
PD0
Write:
Reset:
Unaffected by reset
$0004
Port A Data Direction Register
(DDRA)
See page 47.
Read:
DDRA7
DDRA6
DDRA5
DDRA4
DDRA3
DDRA2
DDRA1
DDRA0
Write:
Reset:
0
0
0
0
0
0
0
0
$0005
Port B Data Direction Register
(DDRB)
See page 48.
Read:
DDRB7
DDRB6
DDRB5
DDRB4
DDRB3
DDRB2
DDRB1
DDRB0
Write:
Reset:
0
0
0
0
0
0
0
0
$0006
Port C Data Direction Register
(DDRC)
See page 48.
Read:
DDRC7
DDRC6
DDRC5
DDRC4
DDRC3
DDRC2
DDRC1
DDRC0
Write:
Reset:
0
0
0
0
0
0
0
0
$0007
Port D Data Direction Register
(DDRD) C9A Only
See page 48.
Read:
DDRC7
DDRC5
DDRC4
DDRC3
DDRC2
DDRC1
DDRC0
Write:
Reset:
0
0
0
0
0
0
0
0
$0008
Unimplemented
$0009
Unimplemented
$000A
SPI Control Register
(SPCR)
See page 75.
Read:
SPIE
SPE
DWOM
(C9A)
MSTR
CPOL
CPHA
SPR1
SPR0
Write:
Reset:
0
0
0
0
0
1
U
U
$000B
SPI Status Register
(SPSR)
See page 76.
Read:
SPIF
WCOL
MODF
Write:
Reset:
0
0
0
0
0
0
0
0
$000C
SPI Data Register
(SPDR)
See page 77.
Read:
SPD7
SPD6
SPD5
SPD4
SPD3
SPD2
SPD1
SPD0
Write:
Reset:
Unaffected by reset
= Unimplemented
R
= Reserved
U = Unaffected
Figure 2-4. Input/Output Registers (Sheet 1 of 3)



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