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| 型号： | SAB80C517A-N18-T3 |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84 |
| 封装： | PLASTIC, LCC-84 |
| 文件页数： | 59/137页 |
| 文件大小： | 2089K |
| 代理商： | SAB80C517A-N18-T3 |
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Semiconductor Group
4 - 3
The power down state is maintained while pin HWPD is held active. If HWPD goes to high level
(inactive state) an automatic start up procedure is performed:
– First the pins leave their floating condition and enter their default reset state as they
had immediately before going to float state.
– Both oscillators are enabled (only if OWE = high). While the on-chip oscillator (with
pins XTAL1 and XTAL2) usually needs a longer time for start-up, if not externally driven (with
crystal approx. 1 ms), the oscillator watchdog's RC oscillator has a very short start-up time
(typ. less than 2 microseconds).
– Because the oscillator watchdog is active it detects a failure condition if the on-chip
oscillator hasn't yet started. Hence, the watchdog keeps the part in reset and supplies the
internal clock from the RC oscillator.
– Finally, when the on-chip oscillator has started, the oscillator watchdog releases the
part from reset after it performed a final internal reset sequence and switches the clock supply
to the on-chip oscillator. This is exactly the same procedure as when the oscillator watchdog
detects first a failure and then a recovering of the oscillator during normal operation.
Therefore, also the oscillator watchdog status flag is set after restart from Hardware Power
Down Mode.
When automatic start of the watchdog was enabled (PE/SWD connected to
V
CC), the
Watchdog Timer will start, too (with its default reload value for time-out period).
The SWD-Function of the PE/SWD Pin is sampled only by a hardware reset. Therefore at least one
Power On Reset has to be performed.
System Reset
相关PDF资料 |
PDF描述 |
|---|---|
| SAB83C517A-N18-T4 | 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84 |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SAB80C517-M | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C517-M16 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C517-M-T40/85 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C517-N | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
| SAB80C517-N16 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller |
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