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UM0224 bảng dữ liệu(PDF) 12 Page - STMicroelectronics

tên linh kiện UM0224
Giải thích chi tiết về linh kiện  STR75x Demonstration Software
PDF  34 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0224 bảng dữ liệu(HTML) 12 Page - STMicroelectronics

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Running the demonstrations
STR75x demonstration software
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2.2.2
Clock failure
At any demo level, if no clock is present on OSC4M (broken or disconnected Crystal), the
following message is displayed on the LCD screen:
If the 4 MHz Crystal is not reconnected in 30s, the MCU enters STANDBY mode and the
demo will never restart as long as the clock is not present. If the 4 MHz Crystal is
reconnected within thirty seconds the MCU continues execution.
Note:
Connecting the OSC4M after reset may not restart the demo correctly. So you must connect
the crystal before starting the demo.
Note:
The Clock Detector (CKD) feeds the MCU with the FREEOSC used as emergency clock if
no clock is detected.
No Clock Detected
STANDBY in 30s



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