micro OLED question

Bobb Fwed

How does the reset pin work on the µOLED? All it says is "External RESET Signal. Open Collector Active Low >= 20µsec."
Does this mean that the pin (on the module) is an open collector? Or does it need to be connected to an open collector to reset it (if so, how much power will be collected)?

I am setting up a PCB, and I don't actually have one to test any of this. I am using this on the Propeller, I assume I don't need a resistor in series on the RESET pin, but would a pull-up be a good idea?

How about the TX/RX lines? It says it outputs at 3.3V, so I don't need a series resistor on the TX, but it mentioned a pull up resistor on the RX line (µC -> µOLED). Do I need the pull up, or can I just set the pin as a high output within the one second that the µOLED takes to boot up?

Maybe someone can show me a schematic that someone has used.

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April, 2008: when I discovered the answers to all my micro-computational-botherations!

Some of my objects:
MCP3X0X ADC Driver - Programmable Schmitt inputs, frequency reading, and more!
Simple Propeller-based Database - Making life easier and more readable for all your EEPROM storage needs.
String Manipulation Library - Don't allow strings to be the bane of the Propeller, bend them to your will!
Fast Inter-Propeller Comm - Fast communication between two propellers (1.37MB/s @100MHz)!

Chris Savage

Typically RESET lines are driven by Open Collector drivers. The reset pin will have an internal pull-up resistor and therefore does not want to be driven high, only low, hence the open collector driver. This can be accomplished with a simple NPN transistor. The 20uS is specifying how long the RESET line should be driven low for a proper reset. I hope this helps. Take care.

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Chris Savage

Parallax Engineering
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