That makes sense. Thanks.

Can you also confirm that jtag (IO39-42) is not possible on the s3 until after I connect via UART0 or USB CDC to blow an efuse?
Do I understand that correctly?

Actually, the more I look at docs, the more confused I become. Now I'm thinking that I can't even flash code at all using UART0. Is that right? It's only possible to flash your initial code via USB CDC before the efuse is blown for jtag IO39-42 ? I'm led to believe that because of https://docs.espre...

We are building a custom board using esp32-s3. We are already using all the UART pins as well as USB pins. So we thought we'd just connect GPIO39-42 for external jtag. But now it looks like we have to blow EFUSE_STRAP_JTAG_SEL=1 in order to get the external jtag to work. Is this right? Does this mea...

When I buy a real of ESP32-S3-MINI-1-N4 processors, is there any default firmware and/or bootloader on this hardware? In particular, I'm wondering if I can load my firmware via OTA or off of SDIO or something besides UART or JTAG for my first time I flash.

I want to gather continuous ADC data at 256hz (with timing errors < 0.01%). Every second or so I want to write that to external flash and do some other high level processing. What is the best way to do this? I'm guessing that I keep the ULP running constantly looking for an external 256hz clock tick...

So if I want to build an application that does ADC conversions 256 times per second (using ULP I'm assuming), and then store that long term in SRAM, which processor should I use for lowest power consumption?