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參數(shù)資料
| 型號： | SAB83C517A-N18-T4 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84 |
| 封裝： | PLASTIC, LCC-84 |
| 文件頁數(shù)： | 88/137頁 |
| 文件大?。?/td> | 2089K |
| 代理商： | SAB83C517A-N18-T4 |
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Semiconductor Group
5 - 19
On-Chip Peripheral Components
5.5
Modified Oscillator Watchdog Unit
The SAB 80C517A has a new oscillator watchdog unit that has an improved functionality with
respect to the SAB 80C517’s oscillator watchdog.
Use of the Oscillator Watchdog Unit
The unit serves 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.
If the oscillator watchdog unit shall be used it must be enabled (this is done by applying high level
to the control pin OWE).
相關PDF資料 |
PDF描述 |
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| SAB80C517A-S18-T3 | 8-BIT, 18 MHz, MICROCONTROLLER, PQFP100 |
| SAB83C517A-5S18-T3 | 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQFP100 |
| SAB83C517A-5S18-T4 | 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQFP100 |
| SAB80C517A-S18-T3 | 8-BIT, 18 MHz, MICROCONTROLLER, PQFP100 |
| SAB80C535-M-T40/85 | 8-BIT, 12 MHz, MICROCONTROLLER, PQFP80 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
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| SAB88C166-5M | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:16-Bit CMOS Single-Chip Microcontrollers with/without oscillator prescaler with 32 KByte Flash EPROM |
| SAB88C166EVAL | 制造商:Siemens 功能描述: |
| SAB88C166W-5M | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:16-Bit CMOS Single-Chip Microcontrollers with/without oscillator prescaler with 32 KByte Flash EPROM |
| SAB9075H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Picture-in-Picture PIP controller for NTSC |
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