RTC (Real Time Clock) support

[Ishwar Sharma]

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

[Ishwar Sharma]

Hi,

Can you please update regarding below points for nRF5340 device.

1. Can we use any GPIO (output) as power source for any device power supply for low power application      when power supply current is required <1mA.

2. What will be max current required for any GPIO input (configured as input) when input is at high level.

3. What will be max current required for any GPIO (configured as input) when input is at low level.
4. What will be max current required for ADC input.

Best regards

[Kazi Afroza Sultana]

Hello,

GPIO pin can power supply to the device if the device does not draw more current than the specific GPIO pin can provide.

Here you can find the electrical specification of GPIO https://infocenter.nordicsemi.com/topic/ps_nrf5340/gpio.html?cp=3_0_0_6_12 

[Ishwar Sharma]

Hi,

Can we use ESD diodes on nRF52840 programming pins (nRF_SWDIO, nRF_SWDCLK, nRF_RESET) for ESD protection. Is there low capacitance ESD diode requirement due to high-speed signals for signal integrity.

Any suggested ESD diode part.

Best regards 

[Kazi Afroza Sultana]

Hello,

You can use any ESD diode here.

[Ishwar Sharma]

Hi,

We are designing new board with nRF5340-QKAA device. Can you please share reference design for nRF5340-QKAA device for Schematic and PCB design where QSPI flash (external memory) is used.

Best regards