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參數(shù)資料
| 型號： | C509-L |
| 廠商： | SIEMENS AG |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-Bit CMOS Microcontroller |
| 中文描述： | 8位CMOS微控制器 |
| 文件頁數(shù)： | 29/74頁 |
| 文件大?。?/td> | 1607K |
| 代理商： | C509-L |
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C509-L
Semiconductor Group
28
Special Function Registers
All registers, except the program counter and the four general purpose register banks, reside in the
special function register area. Several special function registers of the C509-L (CC10-17, CT1REL,
CC1EN, CAFR) are located in the mapped special function register area. For accessing the mapped
special function register area, bit RMAP in special function register SYSCON must be set. All other
special function registers are located in the standard special function register area. As long as bit
RMAP is set, mapped special function registers can be accessed. This bit is not cleared by
hardware automatically.
Special Function Register SYSCON (Address B1H)
Reset Value : 1010XX01B
Bit
The 103 special function register (SFR) include pointers and registers that provide an interface
between the CPU and the other on-chip peripherals. The SFRs of the C509-L are listed in
table 4
and
table 5
. In
table 4
they are organized in groups which refer to the functional blocks of the C509-
L.
Table 5
illustrates the contents of the SFRs in numeric order of their addresses. The most right
column of
table 5
indicates if an SFR is accessed with a mapped procedure controlled by either
RMAP or PDIR.
Function
RMAP
Special function register map bit
RMAP = 0 : The access to the non-mapped (standard) special function
register area is enabled (reset value).
RMAP = 1 : The access to the mapped special function register area is
enabled.
7
6
5
4
3
2
1
0
1
RMAP
–
B1H
SYSCON
Bit No.
MSB
LSB
–
XMAP1
CLKP
PMOD
XMAP0
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