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| 型號(hào)： | 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(yè)數(shù)： | 3/128頁(yè) |
| 文件大?。?/td> | 1837K |
| 代理商： | SAF-C513A-HN |
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Power Saving Mode
Semiconductor Group
8-4
8.2
Power-Down Mode
In the power-down mode, the on-chip oscillator is stopped. Therefore all functions are stopped; only
the contents of the on-chip RAM and the SFR’s are maintained. The port pins controlled by their port
latches output the values that are held by their SFR’s. The port pins which serve the alternate output
functions show the values they had at the end of the last cycle of the instruction which initiated the
power-down mode. ALE and PSEN hold at logic low level (see table 8-1).
The power-down mode is entered by setting the PDE bit. Because PCON is not a bit-addressable
register, the setting of the bit has to be obtained by byte-handling instructions, e.g. by:
ORL
PCON,#00000010B
;Set PDE bit
The instruction that sets bit PDE is the last instruction executed before going into power-down
mode.
The only way to exit from power-down mode is a hardware reset. This reset will redefine all SFR’s,
but will not change the contents of the internal RAM.
In the power-down mode,
V
CC can be reduced up to a minimum of 2 V to minimize power
consumption. It must be ensured, however, that
V
CC is not reduced before the power-down mode is
invoked, and that
V
CC is restored to its normal operating level, before the power-down mode is
terminated. The reset signal that terminates the power-down mode also restarts the oscillator. The
reset should not be activated before
V
CC is restored to its normal operating level and must be held
active long enough to allow the oscillator to restart and stabilize (as with power-on reset).
相關(guān)PDF資料 |
PDF描述 |
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| SAF-C515A-LM | 8-BIT, 18 MHz, MICROCONTROLLER, PQFP80 |
| SAF-C515C-8EMCA | 8-BIT, OTPROM, 10 MHz, MICROCONTROLLER, PQFP80 |
| SAF-C517A-4R24M | 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP100 |
| SAF-C868-1RR | 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PDSO38 |
| SAF-C868-1SR | 8-BIT, 40 MHz, MICROCONTROLLER, PDSO38 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAF-C513AO | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-bit CMOS Microcontroller |
| SAF-C515 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C515-1R24M | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C515-1RM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C515A-4R | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
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