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參數(shù)資料
| 型號： | SAF-C505 |
| 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-C505 |
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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.
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PDF描述 |
|---|---|
| SAFC505 | 8-bit CMOS Microcontroller |
| SAF-C505C-LM | 8-Bit CMOS Microcontroller |
| SAF-C505-LM | 8-Bit CMOS Microcontroller |
| SAB-C505-LM | 8-Bit CMOS Microcontroller |
| SAB-C505C-LM | 8-Bit CMOS Microcontroller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SAF-C505-2RM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C505A-4EM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SAFC505A4EM-CA | 制造商:Infineon Technologies AG 功能描述:MCU 8-bit C500 8051 CISC 32KB EPROM 5V 44-Pin MQFP Ammo |
| SAF-C505C-2RM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C505CA-2RM CA | 功能描述:8位微控制器 -MCU 8-Bit Single Chip Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
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