Since the three flags are saved with UART data in the FIFO, these flags must be cleared by writing 1 to them before the data is read out. This can avoid FIFO level changes, causing the PEF, FEF and BIF saved in the upper layer of FIFO unable to be cleared. If the data has been read out but the three...

When using ADC sampling, the ADC has a different clock source frequency limit based on the voltage supplied by AVDD. The user can select the fastest clock source according to the system analog voltage to achieve the maximum ADC sampling frequency. For example, in the NuMicro? NUC442/472 series: When...

The NuMicro? NUC505 series includes three part numbers with the QFN package, as listed below:

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.

Standard 8051 series which can be divided into Part numbers with ISP function: Part numbers without ISP function: The user can write the ISP program through a third-party programming tool. Low Pin 8051 series which can be divided into Part numbers with ISP function: Part numbers without ISP function...

Please read storage conditions and related precautions on the chip vacuum packaging aluminum bag. For the location of the storage conditions and related precautions, please refer to the following figure.

No. The VBAT pin is used to supply power to a RTC module, as shown below. When the VBaT pin is floating, the RtC module condition is unknown and will generate power to affect the standby power performance. In this case, it is recommended to connect the VBAT with VDD to prevent the power consumption ...

Since VBAT and VDD are powered independently, the across power domain and synchronization issue exists. If RTC_TIME and RTC_CAL registers are read immediately after power on, the RTC_TIME and RTC_CAL values may be incorrect. This is because both the RTC_TIME and RTC_CAL registers are triggered and u...

To avoid the influence of internal analog circuit signals, the input voltage of the GPIO pins with analog functions, even no analog function is selected, could not be higher than AVDD. Otherwise, it will cause unpredictable errors. For example, in the M051 series: If the Config bit is set to 2.2V Br...

The NuMicro? family adopts the ARM? Cortex?-M series 32-bit processors, the Cortex?-M0 series and Cortex?-M4 series, to meet needs of different applications and performance. Taking the NuMicro? Cortex?-M0 NUC230/240 series and the Cortex?-M4 NUC442/472 series as examples, the following table shows t...

After receiving a preset I2C address and R/W bit, the I2C controller generates an interrupt, and the I2C status is changed to 0x60 or 0xA8. At this time, the received I2C address and R/W bit would be saved in the I?C register. Before clearing the 2C interrupt flag, a user could read the I2C data reg...