The Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger - bq24074 data sheet does not make it clear to a newbie which specific resistor to use for the PGOOD pin. It mentions something about "high impedance" and using anywhere between 1 kOhm and 100 kOhm. So which of those hundred options should I use?
Which resister to receive PGOOD data via GPIO on 3.3V microcontrollers?
Which resister to receive PGOOD data via GPIO on 5V microcontrollers?
ANY value in that range! There is no specific value.
Ah, that does make it simple, then! Thank you for explaining.
Say, any particular advantage to 1 k Ohm resistors versus 100 k Ohm resistors?
By the way, Adafruit makes a habit of bundling many external capacitors and resistors into their implementations of popular IC's. Some of the pins in Adafruit's bq24074 are explicitly documented as not requiring external capacitors/resistors.
Unfortunately, Adafruit's documentation is ambiguous on the PGOOD pin. They do not reiterate that a 1 k Ohm - 100 k Ohm resistor is required, nor do they say that one is already included. So I still do not know if one is required for this branded product.
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