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參數(shù)資料
| 型號： | SAFC509-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)： | 62/74頁 |
| 文件大?。?/td> | 1607K |
| 代理商： | SAFC509-L |
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Semiconductor Group
61
09.96
C509-L
Oscillator Watchdog
The oscillator watchdog of the C509-L serves for three 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 appr. 0.5 ms in order to allow the oscillatior to stabilize; then the oscillator watchdog
reset is released and the part starts program execution again.
–
Restart from the hardware power down mode.
If the hardware power down mode is terminated the oscillator watchdog has to control the
correct start-up of the on-chip oscillator and to restart the program. The oscillator watchdog
function is only part of the complete hardware power down sequence; however, the watchdog
works identically to the monitoring function.
–
Fast internal reset after power-on.
In this function the oscillator watchdog unit provides a clock supply for the reset before the on-
chip oscillator has started. In this case the oscillator watchdog unit also works identically to
the monitoring function.
Figure 35
Block Diagram of the Oscillator Watchdog
相關(guān)PDF資料 |
PDF描述 |
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| SAB8088-N | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TV07; No. of Contacts:2; Connector Shell Size:11; Connecting Termination:Crimp; Circular Shell Style:Jam Nut Receptacle; Body Style:Straight |
| SAB8088-P | TV 2C 2#16 PIN RECP |
| SAB8088 | 8-Bit Microprocessing |
| SAB8088-1-N | TV 8C 8#8(TWIN) SKT PLUG RECP |
| SAB8088-1-P | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TV06; Number of Contacts:6; Connector Shell Size:9; Connecting Termination:Crimp; Circular Shell Style:Straight Plug; Body Style:Straight |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAFC509LM | 制造商:Infineon Technologies AG 功能描述:MCU 8-bit C500 8051 CISC ROMLess 5V 100-Pin MQFP |
| SAF-C509-LM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C509-LMDB | 制造商:Rochester Electronics LLC 功能描述: 制造商:INFNON 功能描述: 制造商:SIEM 功能描述: 制造商:Siemens 功能描述: |
| 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 |
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