Hello everyone,I am using the internal rtc time for stm32g0b1cet6 with external LSE crystal (32.768 KHz) with 22pf load capacitors. 1. RTC CR register on device power ON reads wrong value which changes RTC settings such as RTC hour format from 24 ...
Hi,we have an STM32F27ZI with VDD at 3.6V.We connected by mistake PDR_ON to GND while we drive the NRST with an external voltage monitor as in the picture.reset circuit to NRSTPower upPower downYellow -> 3.6, Purple -> Reset, Green-> PDR_ON In additi...
Hello, I have some project with RTC. Initially project was made with STM32F405 uC, now all porting to STM32F765 uC. Problem with RTC, on the new board with F7 uC I have error around 2 sec per day, where board f405 - I have error 1 sec in 4-5 days. B...
I am using below componnet toolsMCU: STM32H7B3IIT6IDE: STM32CubeIDE Version: 1.9.0CRYSTAL: RT3215-32.768-12.5-TR ( 32.7680KHZ 12.5PF)I work with internal RTC. I will use for clock. But RTC clock behinds real clock. While the product is running, the l...
Hi, is this the correct connection for the RTC backup rechargeable battery? Thanx.
Hi Sir,We want to use STM32F429IGT6's internal RTC, so we connect pin 6 to backup battery, and add a 32.768K crystal to pin8 pin9, Are there any additional details I missed?
I am using the RTC of the STM32F745 with 32.768kHz LSE.Principially, the RTC work correct on several PCBs.But there is one PCB where the RTC goes approx. 7 Min too slow in one hour.But if the unit is powered of and the RTC works with VBat for a while...
We have made 500 PCB's with STM32L073RZ and 150 have issue in starting the RTC.We have used the recommended 32.768Khz but its not working for the 150.We have tried changing the recommended 32.768Khz with the cylindrical crystal it worked but when I t...
Hi all,I was looking at STM32G474E-EVAL's schematic and upon inspection of the load capacitance of the RTC and Primary oscillators it seems that the capacitor values chosen were 4.3pF and 1.8pF respectively. However the datasheet for the crystals sh...