We have a product with a STM32F373CC where we calibrate the RTC in Production and store the calibration factor in Data0 and Data1 of the Option Bytes (OBR).Tracing through the (legacy) code via my debugger, I can see the OBR values being written corr...

When we enable the RTC feature on our controllers, we do a calibration in Production against a GPS-locked 10MHz signal. Usually, we'll use the T2 ETR to clock the 10MHz signal in and an RTC-generated 1Hz signal on one of the other T2 channels such a...

We're currently using STM32F373CC micros in several of our designs. Part of our standard design has an EEPROM connected via I2C. We have our own hardware layer that is tried and proven over the decades. However, it relies on the I2C port pins having ...