Since the NUC505 is internally SPI Flash, the execution speed is slow. To increase the execution speed in the Debug mode, use the sram.icf file in the Linker to set the RAM at 0x10000-0x1FFFF, and put the code into the SRAM as shown in Figure 1. However, this setting can only be executed in Debug mo...

GPIO can maintain its original state after entering Standby Power-down mode (SPD0/1 mode). However, after wake-up reset, the GPIO status may be reset due to different trigger sources. The GPIO status includes MFP, I/O modes, and High/Low. In summary, the GPIO state can be maintained when the trigger...

Since the pins with EPWM0, EPWM1, and BPWM output functions (P0.0 - P0.5, P1.0 - P1.5, P5.6 - P5.7) are often used to control the upper and lower MOSFET of bridge circuit. To avoid MOSFET damage caused by simultaneous high output at power-on, the initial state of these pins is determined by Config0[...

As different designs and processes will affect I/O physical limits, detailed I/O electrical characteristics can be found in the Electrical characteristic section of each Datasheet. In general, the I/O of the NuMicro® Cortex®-M0 family can withstand approximately 30 mA of current sink and source. Ple...

Yes, the principle and process of offline programming are as follows: (1) Download the binary file from the PC to a device with offline flash, such as Nu-Link or Nu-Link-Pro; (2) Remove the device with offline Flash from the PC; (3) Connect the device with offline Flash to the chip to be updated for...

In the ICE Debug mode, the code will be programmed in the area selected by the Flash Select field (APROM or LDROM) and boot from this area instead of booting from the area set by Boot Select in the Config0/1. Therefore, regardless of the Boot Select setting in the Config0/1, in Debug mode, the code ...

When using the Nano112 to drive the LCD, if other pins are also configured as the LCD function, the pins connected to the LCD will be affected and the LCD drive waveform output may be abnormal, resulting in blurred display. Therefore, pins that are not connected to the LCD should not be configured a...

When the NUC505 USBD is in Full-speed mode, due to hardware limitations, the master will be unable to be detected normally after sending the "SET REPORT" command. This can be solved by setting the Set Endpoint buffer to increase the length by 4 Bytes. /* Control endpoint */ USBD_SetEpBufAddr(CEP, CE...

The CAN BUS node in the unknown baud rate network will generate bus errors if its baud rate is not consistent with the bus. As long as the following two conditions are met, the CAN BUS will automatically adjust the baud rate until it receives the correct data. In the CAN status register, the Epass (...

This is because the corresponding peripheral interrupt flag in the NVIC_ICPR register has not been cleared. In the Cortex-M architecture, the order in which interrupt service routine executed is controlled through the NVIC. There are two flags in this issue. One is the internal interrupt flag in the...