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

Part # M68HC05
Description  Microcontrollers
PDF  128 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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Technical Data
MC68HC05J1A — Rev. 3.0
Memory
Memory
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$0000
Port A Data Register
(PORTA)
See page 62.
Read:
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Write:
Reset:
Unaffected by reset
$0001
Port B Data Register
(PORTB)
See page 67.
Read:
0
0
PB5
PB4
PB3
PB2
PB1
PB0
Write:
Reset:
Unaffected by reset
$0002
Unimplemented
$0003
Unimplemented
$0004
Data Direction Register A
(DDRA)
See page 63.
Read:
DDRA7
DDRA6
DDRA5
DDRA4
DDRA3
DDRA2
DDRA1
DDRA0
Write:
Reset:
0
0
0
0
0
0
0
0
$0005
Data Direction Register B
(DDRB)
See page 68.
Read:
0
0
DDRB5
DDRB4
DDRB3
DDRB2
DDRB1
DDRB0
Write:
Reset:
0
0
0
0
0
0
0
0
$0006
Unimplemented
$0007
Unimplemented
$0008
Timer Status and Control
Register (TSCR)
See page 73.
Read:
TOF
RTIF
TOIE
RTIE
00
RT1
RT0
Write:
TOFR
RTIFR
Reset:
0
0
0
0
0
0
1
1
$0009
Timer Counter Register
(TCNTR)
See page 75.
Read:
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Write:
Reset:
0
0
0
0
0
0
0
0
$000A
IRQ Status and Control
Register (ISCR)
See page 45.
Read:
IRQE
IRQF
00
0
0
0
Write:
IRQR
Reset:
1
0
0
0
0
0
0
0
= Unimplemented
R
= Reserved
U = Unaffected
Figure 2-2. I/O Register Summary (Sheet 1 of 2)
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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