RTC (Real Time Clock) support

Hi,

We are looking to use nRF5340 device in our new design. We need RTC (Real Time clock) feature with this design.

Does nRF5340 device support RTC (Real Time Clock). nRF5340 supports only Real Time counters. 

Best Regards

Ishwar

Parents
  • Hello,

    1. There are different option given for RF signal (ANT) connection with Antenna. What should be the matching circuit. Is there any calculation for this. We need to use SR4W035 Antenna (2.4 GHz) with NRF52840-QIAA-R device.

     The radio match is specific for the version of the chip which should be followed in accordance with our reference design. For the antenna, the datasheet should show the required matching network. 

    2.  Do we need to populate series resistors and capacitors to Ground for I2C signals.

    No capacitors and series resistors are needed to ground I2C lines.

    3. Should we go with High drive 0 and High drive 1 if the GPIO (output) is used with connector/Cable.

    Low drive mode is the default configuration when a gpio is configured as output. 

    S0S1 = "low drive" or standard drive

    H0H1 = "high drive" for both driving output low and high. So, it depends on your application. It is not necessary to go with HOH1 always. 

    Thanks.

    Best Regards,

    Kazi Afroza Sultana

Reply
  • Hello,

    1. There are different option given for RF signal (ANT) connection with Antenna. What should be the matching circuit. Is there any calculation for this. We need to use SR4W035 Antenna (2.4 GHz) with NRF52840-QIAA-R device.

     The radio match is specific for the version of the chip which should be followed in accordance with our reference design. For the antenna, the datasheet should show the required matching network. 

    2.  Do we need to populate series resistors and capacitors to Ground for I2C signals.

    No capacitors and series resistors are needed to ground I2C lines.

    3. Should we go with High drive 0 and High drive 1 if the GPIO (output) is used with connector/Cable.

    Low drive mode is the default configuration when a gpio is configured as output. 

    S0S1 = "low drive" or standard drive

    H0H1 = "high drive" for both driving output low and high. So, it depends on your application. It is not necessary to go with HOH1 always. 

    Thanks.

    Best Regards,

    Kazi Afroza Sultana

Children
Related