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                                样例使用说明
                             Sample Description
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功能描述：
此样例演示了flash sector擦除和Page写功能。

Function descriptions:
This example demonstrates the flash sector erase and page write functions.
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测试环境：
测试用板：PY32L020_STK
MDK版本： 5.28
IAR版本： 9.20
GCC 版本：GNU Arm Embedded Toolchain 10.3-2021.10

Test environment:
Test board: PY32L020_STK
MDK Version: 5.28
IAR Version: 9.20
GCC Version: GNU Arm Embedded Toolchain 10.3-2021.10
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使用步骤：
1. 编译下载程序到MCU，并运行；
2. 按下按键，程序进行sector擦除和page写功能；
3. sector擦除成功和page写成功，LED亮。

Example execution steps:
1. Compile and download the program to MCU and run it;
2. Press the button to perform sector erase and page write functions in the
program;
3. The sector is successfully erased and the page is successfully written, and
the LED is on
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注意事项：

Notes:
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