Two UART's pin configuration in nRF52833 QFN40

Question

Hi, 
 I want to develop a device using nRF52833. I am using QFN40, so can I use two UART connections. If yes, then what are the Tx, Rx pins for both the UART's

Jørgen Holmefjord · Accepted Answer

Hi, 
 Yes, nRF52833 supports two UARTE instances (UARTE0 and UARTE1), as you can see in Registers . All nRF52 series chips has a pin crossbar feature, allowing any GPIO to be assigned to any serial peripheral like UART, SPI, TWI, etc. You should however avoid using pins marked as " Standard drive, low frequency I/O only" in Pin assignments for high frequency peripherals. The pins are controlled in FW, and both UARTE instances needs to be configured and initialized before use. 
 Best regards, Jørgen

Sai Mukesh · Answer

Hi, 
 Thanks for the reply. 
 But I want exact pin numbers which I can use as UART

Jørgen Holmefjord · Answer

Sai Mukesh said: what are the pins need to consider while i need to flash program from nRF52840 DK to external nRF52833 QDAA QFN40 SOC and share the procedure 
 Make the following connections: 
 
 VDD from DK to VDD on your custom board 
 GND from DK to GND on your custom board 
 SWDIO from DK to SWDIO on your custom board 
 SWDCLK from DK to SWDCLK on your custom board 
 VTG on DK to VDD on DK or on your custom board 
 
 The VTG/SWDIO/SWDCLK pins are available on P20 header on nRF52840 DK .

Sai Mukesh · Answer

as of know we dont had any soc but we had two development kits i.e. nRF52840 and nRF52833 both are DK's. now tried flashing the program form nRF52840DK of debug out (P20) to nRF52833DK debug in with help of 10pin bus cable .but we are facing the below issue 
 could please help us . 
 Flashing build_1 to 1050257546 C:\WINDOWS\system32\cmd.exe /d /s /c "west flash -d c:\Users\Pranathi\central_2\build_1 --skip-rebuild --dev-id 1050257546 --erase" -- west flash: using runner nrfjprog -- runners.nrfjprog: mass erase requested -- runners.nrfjprog: Flashing file: c:\Users\Pranathi\central_2\build_1\zephyr\zephyr.hex [error] [ Client] - Encountered error -102: Command read_device_info executed for 139 milliseconds with result -102 [error] [ Worker] - An unknown error. [error] [ Client] - Encountered error -102: Command read_memory_descriptors executed for 31 milliseconds with result -102 Failed to read device memories. [error] [ Worker] - An unknown error. ERROR: JLinkARM DLL reported an error. Try again. If error condition ERROR: persists, run the same command again with argument --log, contact Nordic ERROR: Semiconductor and provide the generated log.log file to them. NOTE: For additional output, try running again with logging enabled (--log). NOTE: Any generated log error messages will be displayed. FATAL ERROR: command exited with status 33: nrfjprog --program 'c:\Users\Pranathi\central_2\build_1\zephyr\zephyr.hex' --chiperase --verify -f NRF52 --snr 1050257546

Two UART's pin configuration in nRF52833 QFN40

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