參數(shù)資料
型號(hào)： SAF-C505L
廠商： INFINEON TECHNOLOGIES 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)： 50/85頁
文件大?。?/td> 487K
代理商： SAF-C505L
C505L
Data Sheet
48
06.99
Oscillator Watchdog
The oscillator watchdog unit serves for four functions:
–
Monitoring of the on-chip oscillator’s function
The watchdog supervises the on-chip oscillator’s frequency; if it is lower than the frequency
of the auxiliary RC oscillator in the watchdog unit, the internal clock is supplied by the RC
oscillator and the device is brought into reset; if the failure condition disappears (i.e. the on-
chip oscillator has a higher frequency than the RC oscillator), the part executes a final reset
phase of typ. 1 ms in order to allow the oscillator to stabilize; then the oscillator watchdog reset
is released and the part starts program execution again.
–
Fast internal reset after power-on
The oscillator watchdog unit provides a clock supply for the reset before the on-chip oscillator
has started. The oscillator watchdog unit also works identically to the monitoring function.
–
Control of wake-up from software power-down mode
When the software power-down mode is left by a low level at the P3.2/INT0 pin or an active
Real-Time Clock Interrupt Request flag IRTC, the oscillator watchdog unit assures that the
microcontroller resumes operation (execution of the power-down wake-up interrupt) with the
nominal clock rate. In the power-down mode the RC oscillator and the on-chip oscillator are
stopped. Both oscillators are started again when power-down mode is released. When the on-
chip oscillator has a higher frequency than the RC oscillator, the microcontroller starts
operation after a final delay of typ. 1 ms in order to allow the on-chip oscillator to stabilize.
Note: The oscillator watchdog unit is always enabled.
相關(guān)PDF資料
PDF描述
SAB-C505L 8-bit CMOS Microcontroller
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SAF-C505C-LM 8-Bit CMOS Microcontroller
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAF-C505L-4EM 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-bit CMOS Microcontroller
SAF-C505-LM 制造商:Rochester Electronics LLC 功能描述:- Bulk
SAFC5084EM 制造商:Infineon Technologies AG 功能描述:MCU 8-bit C500 8051 CISC 32KB EPROM 5V 64-Pin MQFP
SAFC5084EMTR 制造商:Infineon Technologies AG 功能描述:MCU 8-Bit C500 8051 CISC 32KB EPROM 5V 64-Pin MQFP T/R
SAFC5084EMTR-AA 制造商:Infineon Technologies AG 功能描述:IC 8-BIT MCU
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