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參數(shù)資料
| 型號： | C515A |
| 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)： | 38/58頁 |
| 文件大小： | 634K |
| 代理商： | C515A |
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C515A
Semiconductor Group
38
1997-10-01
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.
–
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.
–
Control of external 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, 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.
相關PDF資料 |
PDF描述 |
|---|---|
| C515C | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| C515C-8EM | RW-D Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 48V; Output Voltage (Vdc): 05V; Power: 2W; DIP24 Low Profile Package; Dual Ouputs from a Single Supply; 2:1 Wide Range Voltage Input; 3kVDC Isolation; UL94V-0 Package Material; Continuous Short Circuit Protection; Low profile 7mm Height; Approved for Medical Applications; Efficiency to 85% |
| C515C-8RM | RW-S Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 48V; Output Voltage (Vdc): 05V; Power: 2W; DIP24 Low Profile Miniature Package; 1kVDC Isolation; Feedback Regulated Output; 2:1 Wide Range Voltage Input; Continuous Short Circuit Protection; Less than 7mm Height; SMD Pinning Option; Efficiency to 87% |
| C515C-LM | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| C515C | 8-Bit CMOS Microcontroller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| C515A_9708 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| C515C | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit Single-Chip Microcontroller |
| C515C_9711 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| C515C-8E | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| C515C-8EM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit Single-Chip Microcontroller |
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