Denis Bélières

Yes, thanks. Things are clear now with replies I had on this other thread. I dropped my idea of 3V3. I will use the 3V3 as output power to some peripherals, just low frequency CMOS circuits. The greatest current was for an OLED display, but it...

Thanks for explanations. Maybe for another project I will turn to MicroMod, but now for the current one it is too late to change. I just changed my 3v3 regulator for a 5V one, and took 3V3 from Teensy to power some peripheral (current is Ok). All...

I do not intend to develop anything except gadgets in my garage ... That's far enough for my old white-haired dome ...

Many thanks for these enlightening explanations. I saw in IMXRT manual that power up sequence was somewhat complicated, and thought that there was adequate things on the board, I did not try to analyse things further as you do there. Maybe the...

No replies ... Six monthes after, I asked the same question in this thread, and then got replies ...

Do I need SNVS ? I am not concerned with Real Time Clock, protections, keys, security ... And diode D2 routes +3V3 to VDD_SNVS_IN.

Yes indeed, without 5V the internal USB drivers won't work. But the data sheet (not reference manual) says that the VBUS pins can be left not connected when not used. So the chip can be powered with 3V3 and other lower voltages derived from 3V3...

But I do not want to have two power supplies ; one 5 V for teensy, and one 3V3 for peripherals which do not withstand 5 V... It is far simpler if my whole logic system is powered with only one supply ! I have yet an unregulated +18V from a...

Some time ago, I put on the forum another question wich did not received any answer. If the board is powered by an external 3v3 source, with the above connexion opened, what happens when the power is off while a computer is connected to the USB...

I uploaded the file here : https://www.dropbox.com/scl/fi/45ska2k2eeg4vnzl1lkgk/IMXRT1060RM-rev4_annotations.pdf?rlkey=japjdwhltmwjzjv3g114azk4j&st=gsc30l16&dl=0. Have a nice day ...

So Paul, I send you a link by e-mail ? I suppose i cannot attach a 25 Mo file here ?

NXP's documentation "IMXRT1060 Processor Reference Manual Rev 3 07/2021" annotated by Paul Stoffregen to give information relative to Teensy boards is available on PJRC Site : https://www.pjrc.com/teensy/IMXRT1060RM_rev3_annotations.pdf. But a...