Other Parts Discussed in Thread: CC2642R
Hi,
We are using cc3220SF chipset in custom board and flashing them through SOP2 + UART. Issue: In very rare cases after flashing the device via UART(keeping SOP2 pin HIGH and rebooting) for the first time device does not boot(with SOP2 pin free and reboot) the application. We can confirm the device is stuck in bootloader mode as even though SOP2 pin is not kept HIGH we are still able to flash in the boards having this issue. Application is never booted in this case.
We are in production phase right now and in 3K devices 5 - 10 have this type of issue. We did analysis at our end and it seems that on the production setup for flashing the devices possibly we are not able to generate sufficient voltage as per specified for SOP2 pin for the device to enter boot mode. This is the only thing the is not matching to the datasheet here. Will this cause any damage? Anything that you can direct us towards here? In ongoing production it might be a blocker for us if this issue is due to our setup and it result in bulk failures.
