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Published 20 hours ago • verified publisher icon skiselev

Missing a reset pull-up resistor

Open andykarpov opened this issue 2 years ago • 2 comments

FE2010A datasheet says that the reset line should be equipped with a 10k pull-up resistor, that is missing on the current design. Adding that 10k pull-up increased stability of the board's power-up and reset.

P.S. Also i've added a 47k resistor in parallel of the 10uF reset capacitor to discharge it after power-off, so it can produce a proper initial reset signal for the next power-on cycle.

andykarpov avatar Jul 03 '22 12:07 andykarpov

/RESIN has a pull-up resistor (RR2). I don't think CLEAR/RESET should have one. It could be a good idea to connect a diode between /RESIN and VCC to discharge it when system is powered down

skiselev avatar Jul 03 '22 20:07 skiselev

Ah, yes, thanks, i see, and sorry about the invalid issue then :) Regarding the discharging diode - well, nice idea, let's try!

andykarpov avatar Jul 03 '22 20:07 andykarpov