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M031 시리즈 / User Manual
https://www.nuvoton.com.cn/products/microcontrollers/arm-cortex-m0-mcus/m031-series/?tab=2&group=Document&rt=User Manual
/resource-files/RH_NuGang_Programmer_EN_Rev7.02.pdf NuGang Programmer Revision History UG0520110902122050
산업용 8051 시리즈 / User Manual
https://www.nuvoton.com.cn/products/microcontrollers/8bit-8051-mcus/industrial-8051-series/?tab=2&group=Document&rt=User Manua...
/resource-files/UM_Nu-Link2-Pro_Debugger_and_Programmer_User_Manual_EN_V1.01.pdf UM_Nu-Link2-Pro_Debugger_and_Programmer_User_Manual_EN_V1.01 UG1320200319174043
M031 시리즈 / User Manual
https://www.nuvoton.com.cn/products/microcontrollers/arm-cortex-m0-mcus/m031-series/?tab=2&group=Document&rt=User Manual
/resource-files/RH_NuTool-PinConfigure_EN_V1.19.0005.pdf RH NuTool-PinConfigure EN V1.19.0005 RH0120160901103830
M031 시리즈 / User Manual
https://www.nuvoton.com.cn/products/microcontrollers/arm-cortex-m0-mcus/m031-series/?tab=2&group=Document&rt=User Manual
/resource-files/RH_NuTool-ClockConfigure_EN_v1.04.0000.pdf NuTool-ClockConfigure Revision History RH0120161012135538
M031 시리즈 / User Manual
https://www.nuvoton.com.cn/products/microcontrollers/arm-cortex-m0-mcus/m031-series/?tab=2&group=Document&rt=User Manual
/resource-files/RH_NuConsole_EN_V2.04.6725.pdf NuTool-NuConsole Revision History RH0320171215164642
FAQ / Why can’t the clock source of HCLK be switched to PLL when the system clock source is initialized with the following commands? CLK->CLKSEL0 = (CLK->CLKSEL0 & ~CLK_CLKSEL0_HCLKSEL_Msk); CLK->CLKSEL0 |= CLK_CLKSEL0_HCLKSEL_PLL;
https://www.nuvoton.com.cn/support/technical-support/faq/d7065f9d-04f1-11ea-b113-05daf7eedf03/
HIRC, PLL, 时钟切换 Why can’t the clock source of HCLK be switched to PLL when the system clock source is initialized with the following commands? CLK->CLKSEL0 = (CLK->CLKSEL0 & ~CLK_CLKSEL0_HCLKSEL_Msk); CLK->CLKSEL0 |= CLK_CLKSEL0_HCLKSEL_PLL; 1480414232839 Q: Why can’t the clock source of HCLK be switched to PLL when the system clock source is initialized with the following commands? CLK->CLKSEL0 = (CLK->CLKSEL0 & ~CLK_CLKSEL0_HCLKSEL_Msk); CLK->CLKSEL0 |= CLK_CLKSEL0_HCLKSEL_PLL; A: In the execution of the first command line, CLK->CLKSEL0 = (CLK->CLKSEL0 & ~CLK_CLKSEL0_HCLKSEL_Msk); HCLKSEL (CLKSEL0 [2: 0]) is set to 0x00. When HCLKSEL is set to 0x00, as shown below, the clock source of HCLK is switched to external crystal. If the external crystal is not stable or enabled at this time, the switching clock source will fail and the HCLKSEL will be remain its default setting (initialized as 0x07, clock source as HIRC). Therefore, in the execution of the second command line, CLK->CLKSEL0
FAQ / What is the main function of Window Watchdog Timer (WWDT)?
https://www.nuvoton.com.cn/support/technical-support/faq/d70b68b0-04f1-11ea-b113-05daf7eedf03/
What is the main function of Window Watchdog Timer (WWDT)? 1480414244861 The Window Watchdog Timer (WWDT) protects the entire system by restarting the chip when the program is unable to control due to unexpected errors during the execution of the program and the WWDT counter is reset incorrectly. The WWDT has a 6-bit counter, and a settable Reload Window. During operation, the WWDT will ask the program to reset the counter in the Reload Window. When the program does not reset the counter in the Reload Window, or the counter counts down to 0, the program is in an uncontrollable state; at this time, the WWDT will restart the system, as shown below:
FAQ / Can each channel of ADCs in the NuMicro® family microcontrollers with the same module be sampled simultaneously?
https://www.nuvoton.com.cn/support/technical-support/faq/d776fbfc-04f1-11ea-b113-05daf7eedf03/
Can each channel of ADCs in the NuMicro® family microcontrollers with the same module be sampled simultaneously? 1486027960325 No, simultaneous sampling of multiple channels are not supported by ADCs with the same module. However, the NuMicro® M0519 series supports two ADC modules that can simultaneously sample channels from different modules. For example, in the NuMicro® M451 series: When AVDD works at 4.5V - 5.5V, the maximum ADC clock frequency is up to 20 MHz, and it needs 20 ADC clocks to complete an A/D conversion. Thus, the minimum sampling frequency interval for each channel of the ADC is 1 uS.
FAQ / How to use the DSP function in the NuMicro® M4 series for spectrum analysis?
https://www.nuvoton.com.cn/support/technical-support/faq/d786b375-04f1-11ea-b113-05daf7eedf03/
M4, DSP, FFT, Spectrum How to use the DSP function in the NuMicro® M4 series for spectrum analysis? 1486031337712 For detailed example samples, refer to the following link: http://www.nuvoton.com/hq/resource-download.jsp?tp_GUID=EC0120160922110158 Enable the DSP function: 1. In Keil, select Target Options, switch to the C/C ++ window and then enter ARM_MATH_CM4 = 1 in the Define text field. 2. In the Library section, add arm_cortexM4lf_math.lib at \Library\CMSIS\Lib\ARM. 3. Include arm_math.h to the main function. After that, the DSP library can be called in the main function. First, the even-numbers in the data format to be calculated are real numbers and the odd-numbers are imaginary numbers, e.g. 1+0.5i, 2+4i, 3+2i=>testinput={1, 0.5, 2, 4, 3, 2}, FFTsize=3. Then, call the function arm_cfft_radix4_init_f32(&S, fftSize, ifftFlag, doBitReverse) to do the initial settings for Fast Fourier operation, including the number of operations, the need for fast Fourier or inverse fast Fourier
FAQ / Why Keil cannot be used to program APROM?
https://www.nuvoton.com.cn/support/technical-support/faq/d86d6a5b-04f1-11ea-b113-05daf7eedf03/
Downloads, Nu-Link Me, ICE, IDE Flash, Keil Why Keil cannot be used to program APROM? 1516081147160 To program code into APROM, please follow steps below to do preliminary troubleshooting first: Check code size Code size (Code + RO data) Displayed on Build Output after compilation Check if the APROM in the chip is sufficient. In the Keil main window, click Project→Options for Target→Device→App Flash 2. Check if the memory block to be programmed is valid. In the Linker page, make sure that R/O and R/W Base settings are valid for the microcontroller, as shown below. In the Flash Select section, if LDROM is selected, the file larger than LDROM size cannot be programmed. In the Keil main window, click Project→Options for Target→Utilities→Settings to open the following form. 3. For Nu-Link-Me V3.1 or later, please switch the Mass Storage function off. When switched on, the Mass Storage functions as USB and can directly program code by pulling in the .bin file.
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