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參數(shù)資料
| 型號： | SAB-C504-L24M |
| 廠商： | SIEMENS A G |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-Bit CMOS Microcontroller |
| 中文描述： | 8-BIT, 24 MHz, MICROCONTROLLER, PQFP44 |
| 文件頁數(shù)： | 32/49頁 |
| 文件大小： | 962K |
| 代理商： | SAB-C504-L24M |
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C504
Semiconductor Group
32
Oscillator Watchdog
The oscillator watchdog of the C504 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 an auxiliary RC oscillator, the internal clock is supplied by this RC oscillator and the C504
is put into reset state; if the failure condition again disappears, 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 external wake-up from software power-down mode
When the power-down mode is left by a low level at the INT0 pin, 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.
Figure 14
Block Diagram of the Programmable Watchdog Timer
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAB-C504-L24MAC-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述: |
| SAB-C504-L40M | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SABC504LM | 制造商:Infineon Technologies AG 功能描述:MCU 8-Bit C500 8051 CISC ROMLess 5V 44-Pin MQFP |
| SAB-C504-LM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C505 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-bit CMOS Microcontroller |
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