Search found 31 matches

by Dylan Hsieh
29 Mar 2017, 09:50
Forum: Nuvoton Cortex-M4 MCU
Topic: Does a thermal pad of the QFN package in the NuMicro® NUC505 series have to be connected to ground?
Replies: 0
Views: 3241

Does a thermal pad of the QFN package in the NuMicro® NUC505 series have to be connected to ground?

The NuMicro® NUC505 series includes three part numbers with the QFN package, as listed below:
  • NUC505YLA
  • NUC505YLA2Y
  • NUC505YO13Y
When using these part numbers, the thermal pad has to be connected to ground, as the ground of digital circuit, to ensure a stable internal potential.
by Dylan Hsieh
29 Mar 2017, 09:45
Forum: Nuvoton Cortex-M4 MCU
Topic: What is the delay time of an audio source from the NuMicro® NUC505 MCU Line-in to a headphone out? What is the reason?
Replies: 0
Views: 3682

What is the delay time of an audio source from the NuMicro® NUC505 MCU Line-in to a headphone out? What is the reason?

When the audio source enters the NUC505 series microcontroller (MCU), the source will be converted by an internal ADC first for the NUC505 to process. Then the NUC505 will send a number of data based on user firmware settings. After the processing of DAC codec, the user can hear the audio source th...
by Dylan Hsieh
29 Mar 2017, 09:44
Forum: Nuvoton Cortex-M4 MCU
Topic: What is the encryption function in the NUC505 series? How to use it?
Replies: 0
Views: 3210

What is the encryption function in the NUC505 series? How to use it?

As the NUC505 series uses SPI Flash, anyone can get code in Flash simply through the SPI interface. Thus, the NUC505 provides an encryption mechanism to protect the SPI Flash internal code to prevent data from being stolen. The NUC505 uses MTP (Multiple-Time Programmable) memory to set the encrypti...
by Dylan Hsieh
29 Mar 2017, 09:37
Forum: Nuvoton Cortex-M4 MCU
Topic: How to use RTC function in the NUC505 series?
Replies: 0
Views: 3192

How to use RTC function in the NUC505 series?

The RTC function in the NUC505 needs to be enabled by RTC_WAKEUP. When the system is powered on, RTC_nRWAKE needs to be grounded so that the RTC function can be enabled. After power on, if the RTC_nRWAKE pin continues low for a period of time (set by the RTC_POWCTL register), the system hardware wi...
by Dylan Hsieh
29 Mar 2017, 09:31
Forum: Nuvoton Cortex-M4 MCU
Topic: What is the power source supplied to VDD12 in the NUC505 series?
Replies: 0
Views: 3066

What is the power source supplied to VDD12 in the NUC505 series?

VDD12 in the NUC505 can be powered from an external LDO or internal LDO. External LDO VDD12 in the NUC505 is connected to an external 1.2V, and LDO_CAP connects a 4.7uF capacitor to ground http://www.nuvoton.com/export/sites/nuvoton/images/Support/FAQ179_I.png Internal LDO LDO_CAP in the NUC505 is ...
by Dylan Hsieh
28 Mar 2017, 16:04
Forum: Nuvoton Cortex-M4 MCU
Topic: Why does DSP need Q format? What do q31, q15, q7, and f32 mean?
Replies: 0
Views: 10291

Why does DSP need Q format? What do q31, q15, q7, and f32 mean?

In DSP operations, when a problem cannot be solved by using an integer, and the floating-point operation spends too much time, the Q format can be used to solve the problem regarding performance and operation time. q31, q15, and q7 use a fixed-point number to represent the bits of fractional part. ...
by Dylan Hsieh
28 Mar 2017, 16:00
Forum: Nuvoton Cortex-M4 MCU
Topic: Did the NuMicro® Cortex-M4 series include DSP library and sample code?
Replies: 0
Views: 3001

Did the NuMicro® Cortex-M4 series include DSP library and sample code?

All the Nuvoton NuMicro® Cortex-M4 series BSP (Board Support Packages) include the Cortex®-M4 DSP library and sample code. The files are located at \Library\CMSIS\DSP_Lib\Source, as shown in the figure below. The \Library\CMSIS\DSP_Lib\Examples, DSP sample code provided by ARM® for user reference, ...
by Dylan Hsieh
28 Mar 2017, 15:59
Forum: Nuvoton Cortex-M4 MCU
Topic: How to enable DSP function in the NuMicro® Cortex-M4 series
Replies: 0
Views: 3267

How to enable DSP function in the NuMicro® Cortex-M4 series

The NuMicro® Cortex-M4 series BSP (Board Support Package) includes the Cortex®-M4 DSP library which is comprehensive and easy to use and develop directly. Besides, the calculation algorithms in the library have been optimized to effectively reduce the operation time. To enable DSP with Keil After s...
by Dylan Hsieh
27 Mar 2017, 09:59
Forum: Nuvoton Cortex-M4 MCU
Topic: Nuvoton NuTool
Replies: 0
Views: 29153

Nuvoton NuTool

NuTool-PinConfig PinConfigure is used to configure GPIO multi-functions of Nuvoton MCU families. https://i.imgbox.com/dkyM0GlA.png NuTool-PinConfig_Rev.1.09.0004 Revision History NuTool-PinView NuTool-PinView is a monitoring and visualization tool that can immediately show the current status of I/O...
by Dylan Hsieh
27 Mar 2017, 09:33
Forum: Nuvoton Cortex-M4 MCU
Topic: NuMicro® Cortex-M4 BSP
Replies: 0
Views: 28051

NuMicro® Cortex-M4 BSP

NuMicro® M451 Series Board Support Package M451 series (M451 / M452 / M453 / M451M) software package based on CMSIS version 3.01. It supports both IAR and Keil development environment with drivers and samples codes. Examples source code for NuTiny-SDK-M451 and Learning Board are included. For detai...