Search found 208 matches

by a_ziliu
31 May 2021, 16:05
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: What should user do when there is no HXT (high speed crystal oscillator) connected to the system and user switches the s
Replies: 0
Views: 2505

What should user do when there is no HXT (high speed crystal oscillator) connected to the system and user switches the s

When the CPU is powered on, the high-speed internal oscillator (HIRC) is used as the clock source. After the Flash is stable, the Config value is read to switch to HXT. Therefore, during the period from power-on to Flash stabilization. The signal of the ICP Programming Tool can still be received for...
by a_ziliu
31 May 2021, 16:05
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: How to know the current CPU and peripheral frequency?
Replies: 0
Views: 2500

How to know the current CPU and peripheral frequency?

In the NuMicro® family microcontroller (MCU), I/O is designed with CKO function (Clock Output). After I/O multi-function pin function is switched to CKO, the oscilloscope can be used to measure I/O to observe the CPU and peripheral frequency. Due to the I/O slew rate limit, there may be no way to ou...
by a_ziliu
31 May 2021, 16:05
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: How does the ISP code (UART interface) provided by Nuvoton determine whether an ISP update procedure is required after b
Replies: 0
Views: 2692

How does the ISP code (UART interface) provided by Nuvoton determine whether an ISP update procedure is required after b

The ISP code (UART interface) provided by Nuvoton can determine whether an ISP update is required through software. The ISP update will be started if a command is received within the set time. Developers generally leave an updated path on the product, but whether an ISP update is required will be de...
by a_ziliu
31 May 2021, 16:04
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: How does the ISP code (USB interface) provided by Nuvoton determine whether an ISP update procedure is required after bo
Replies: 0
Views: 2449

How does the ISP code (USB interface) provided by Nuvoton determine whether an ISP update procedure is required after bo

The ISP code (USB interface) provided by Nuvoton can refer to the logic of an I/O pin to determine whether an ISP update is required through hardware. Developers generally leave an updated path on the product. However, whether an ISP update is required will be determined by software or hardware. (1)...
by a_ziliu
31 May 2021, 16:04
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: Under the premise that the MCU is not damaged, when a new Config setting value is programmed, why is the MCU will always
Replies: 0
Views: 2524

Under the premise that the MCU is not damaged, when a new Config setting value is programmed, why is the MCU will always

A reset after the MCU is powered on may be caused by the following conditions: (1) The user turns on the BOD function in the Config0 setting. When the input voltage of the chip is lower than the voltage setting value of the BOD, the system resets the MCU. (2) The user turns on the watchdog timer (WD...
by a_ziliu
31 May 2021, 16:04
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: Product Brief, Datasheet与Technical Reference Manual (TRM)有什么差别?
Replies: 0
Views: 2225

Product Brief, Datasheet与Technical Reference Manual (TRM)有什么差别?

Product Brief, PB : 旨在简短介绍IC的功能、特色与应用方向
Datasheet, DS : 文件中包含IC的基本介绍、电气特性、物理极限与测试结果
Technical Reference Manual, TRM : 文件中包含IC的基本介绍、外设(Peripheral)介绍、外设的操作与控制流程、外设的寄存器表(Register Table)等等内容

假如用户在设计电路上有电气特性与物理限制需要考虑,请参考Datasheet;假如使用者在撰写程序代码需要了解IC如何操作与控制,请参考Technical Reference Manual。
by a_ziliu
31 May 2021, 16:03
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: How long does it take for the Reset Pin to remain low logic to trigger the MCU Reset?
Replies: 0
Views: 2493

How long does it take for the Reset Pin to remain low logic to trigger the MCU Reset?

In the NuMicro® family microcontroller (MCU), MCU Reset through the Reset Pin requires maintaining the Reset Pin at a low logic for a fixed period of time. This time varies slightly depending on the part number in each series, but falls within 20~35 us. Please refer to the Technical Reference Manual...
by a_ziliu
31 May 2021, 16:03
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: How to change the UART port when using the UART function of NuMicro_ISP_Programming_Tool for ISP update?
Replies: 0
Views: 2637

How to change the UART port when using the UART function of NuMicro_ISP_Programming_Tool for ISP update?

When using the UART function of NuMicro_ISP_Programming_Tool for ISP update, there are three steps to change the UART port. 1. In targetdev.h, find define, change the UART port and the name of the interrupt subroutine to the name of the target PORT (For different chips, the name of the interrupt sub...
by a_ziliu
31 May 2021, 16:03
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: How to ensure the uniqueness of UID (Unique ID)?
Replies: 0
Views: 2553

How to ensure the uniqueness of UID (Unique ID)?

All chips provided by Nuvoton carry UID (Unique ID) information. UID is the chip’s unique identification code, which contains information such as test machine, test time, part number, etc. It is the serial number of the chip and will never be repeated. Since the UID has a length of 96 bits, it is ne...
by a_ziliu
31 May 2021, 16:02
Forum: Nuvoton Cortex-M0/M23 MCU
Topic: How to use the ICP tool to do encrypted programming for the NUC505?
Replies: 0
Views: 2405

How to use the ICP tool to do encrypted programming for the NUC505?

When using the ICP tool, offline programming or online programming can be used for encrypted programming of NUC505. The user must first switch the NUC505 to ICP mode before the ICP tool is connected. The online programming procedure is as follows: After connecting the NUC505 with the ICP tool, first...