參數(shù)資料
型號(hào)： MC68HC05C9ECP
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝： PLASTIC, DIP-40
文件頁(yè)數(shù)： 18/106頁(yè)
文件大?。?/td> 659K
代理商： MC68HC05C9ECP
I/O Registers
MC68HC05C9E Advance Information Data Sheet, Rev. 0.1
Freescale Semiconductor
19
2.5 I/O Registers
Except for the option register, all I/O, control and status registers are located within one 32-byte block in
page zero of the address space ($0000–$001F). A summary of these registers is shown in Figure 2-2.
More detail about the contents of these registers is given in Figure 2-3.
Address
Register Name
$0000
Port A Data Register
$0001
Port B Data Register
$0002
Port C Data Register
$0003
Port D Data Register
$0004
Port A Data Direction Register
$0005
Port B Data Direction Register
$0006
Port C Data Direction Register
$0007
Port D Data Direction Register
$0008
Unused
$0009
Unused
$000A
Serial Peripheral Control Register
$000B
Serial Peripheral Status Register
$000C
Serial Peripheral Data Register
$000D
Baud Rate Register
$000E
Serial Communications Control Register 1
$000F
Serial Communications Control Register 2
$0010
Serial Communications Status Register
$0011
Serial Communications Data Register
$0012
Timer Control Register
$0013
Timer Status Register
$0014
Input Capture Register High
$0015
Input Capture Register Low
$0016
Output Compare Register High
$0017
Output Compare Register Low
$0018
Timer Register High
$0019
Timer Register Low
$001A
Alternate Timer Register High
$001B
Alternate Timer Register Low
$001C
Unused
$001D
COP Reset Register
$001E
COP Control Register
$001F
Reserved
Figure 2-2. I/O Register Summary
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