參數(shù)資料
型號： MC68HC705L16
廠商： 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述： Microcontrollers
中文描述： 微控制器
文件頁數(shù)： 25/146頁
文件大?。?/td> 772K
代理商： MC68HC705L16
Summary of Internal Registers and I/O Map
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
Freescale Semiconductor
25
2.2.6 Option Map
Address locations $0000–$000F are dual mapped. When the OPTM bit in the MISC register is cleared,
the main address map is accessed. When the OPTM bit in the MISC register is set, the option address
map is accessed.
NOTE
Although not necessary for this device, for future compatibility the OPTM bit
should be cleared when accessing memory locations $0010 and above.
2.3 Summary of Internal Registers and I/O Map
Figure 2-3
contains a detailed memory map of the I/O registers.
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
PB4
PB3
PB2
PB1
PB0
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 56.
Read:
PD7
PD6
PD5
PD4
PD3
PD2
PD1
1
Write:
Reset:
1
1
1
1
1
1
1
1
$0004
Port E Data Register
(PORTE)
See page 57.
Read:
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
Write:
Reset:
1
1
1
1
1
1
1
1
$0005
↓
$0007
Reserved
R
R
R
R
R
R
R
R
Reserved
R
R
R
R
R
R
R
R
$0008
Interrupt Control Register
(INTCR)
See page 45.
Read:
IRQ1E
IRQ2E
0
KWIE
IRQ1S
IRQ2S
0
0
Write:
Reset:
0
0
0
0
0
0
0
0
$0009
Interrupt Status Register
(INTSR)
See page 46.
Read:
IRQ1F
IRQ2F
0
KWIF
0
0
0
0
Write:
RIRQ1
RIRQ2
RKWIF
Reset:
0
0
0
0
0
0
0
0
$000A
Serial Peripheral Control Register
(SPCR)
See page 73.
Read:
SPIE
SPE
DORD
MSTR
0
0
0
SPR
Write:
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
R
= Reserved
U = Unaffected
Figure 2-3. Main I/O Map (Sheet 1 of 5)
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