參數(shù)資料
型號: SAF-C513A-HN
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 8-BIT, EEPROM, 8 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 126/128頁
文件大小: 1837K
代理商: SAF-C513A-HN
Semiconductor Group
8-1
Power Saving Mode
8
Power Saving Modes
The C511/513 microcontroller provide two power saving modes:
Idle mode
Power-down mode.
In the idle mode only the CPU will be deactivated, whereas in the power-down mode all operations
will be stopped.
The bits PDE and IDLE, located in SFR PCON, select the power-down mode or the idle mode,
respectively.
If the power-down mode and the idle mode are set at the same time, power-down takes
precedence.
Furthermore, register PCON contains two general purpose flags. For example, the flag bits GF0
and GF1 can be used to give an indication if an interrupt occurred during normal operation or during
the idle mode. An instruction that activates the idle mode also can set one or both flag bits. When
idle is terminated by an interrupt, the interrupt service routine can examine the flag bits.
Special Function Register (Address 87H)
Reset Value : 0XXX0000B
Symbol
Position
Function
SMOD
PCON.7
Baud rate doubled
When set, the baud rate of the serial channel in mode 1,2,3 is
doubled.
PCON.6-4
Not implemented. Reserved for future use.
GF1
PCON.3
General purpose flag
GF0
PCON.2
General purpose flag
PDE
PCON.1
Power-down enable bit
When set, power-down mode is entered.
IDLE
PCON.0
Idle mode enable bit
When set, idle mode is entered.
SMOD
–––
87H
PCON
Bit No.
7
65
43
21
0
MSB
LSB
GF1
GF0
PDE
IDLE
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