参数资料
型号: M68HC05M68H
厂商: Motorola, Inc.
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件页数: 30/130页
文件大小: 1541K
代理商: M68HC05M68H
Memory
Advance Information
MC68HC705P6A
Rev. 2.0
30
Memory
MOTOROLA
0
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$0000
Port A Data Register
(PORTA)
See page 52.
Read:
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Write:
Reset:
Unaffected by reset
$0001
Port B Data Register
(PORTB)
See page 53.
Read:
PB7
PB6
PB5
0
0
0
0
0
Write:
Reset:
Unaffected by reset
$0002
Port C Data Register
(PORTC)
See page 54.
Read:
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Write:
Reset:
Unaffected by reset
$0003
Port D Data Register
(PORTD)
See page 55.
Read:
PD7
0
PD5
1
0
0
0
0
Write:
Reset:
Unaffected by reset
$0004
Port A Data Direction
Register (DDRA)
See page 52.
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 53.
Read:
DDRB7
DDRB6
DDRB5
1
1
1
1
1
Write:
Reset:
0
0
0
0
0
0
0
0
$0006
Port C Data Direction
Register (DDRC)
See page 54.
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)
See page 55.
Read:
0
0
DDRD5
0
0
0
0
0
Write:
Reset:
0
0
0
0
0
0
0
0
$0008
Unimplemented
= Unimplemented
R
= Reserved
U = Undetermined
Figure 2-3. I/O and Control Register Summary (Sheet 1 of 4)
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