參數(shù)資料
型號: MC68HC05L16CFU
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, QFP-80
文件頁數(shù): 65/146頁
文件大小: 852K
代理商: MC68HC05L16CFU
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
6543
21
Bit 0
$0000
Port A Data Register
(PORTA)
Read:
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Write:
Reset:
Unaffected by reset
$0001
Port B Data Register
(PORTB)
Read:
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Write:
Reset:
Unaffected by reset
$0002
Port C Data Register
(PORTC)
Read:
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Write:
Reset:
Unaffected by reset
$0003
Port D Data Register
(PORTD)
Read:
PD7
PD6
PD5
PD4
PD3
PD2
PD1
1
Write:
Reset:
1
1111
111
$0004
Port E Data Register
(PORTE)
Read:
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
Write:
Reset:
1
1111
111
$0005
Reserved
RRRR
$0007
Reserved
RRRR
$0008
Interrupt Control Register
(INTCR)
Read:
IRQ1E
IRQ2E
0
KWIE
IRQ1S
IRQ2S
0
Write:
Reset:
0
0000
000
$0009
Interrupt Status Register
(INTSR)
Read:
IRQ1F
IRQ2F
0
KWIF
0
Write:
RIRQ1
RIRQ2
RKWIF
Reset:
0
0000
000
$000A
Serial Peripheral Control Register
(SPCR)
Read:
SPIE
SPE
DORD
MSTR
0
SPR
Write:
Reset:
0
0000
000
= Unimplemented
R
= Reserved
U = Unaffected
Figure 2-3. Main I/O Map (Sheet 1 of 5)
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