Question about BS1 OEM schematic
RDL2004
Posts: 2,554
Hi,
I have a couple of questions about the BASIC Stamp 1 OEM module (through hole version). This item is discontinued, but the interpreter chip is still available, so it would be relatively cheap to build or breadboard one. I downloaded the schematic and noticed that part RN1 doesn't have the values specified. This is a resistor network with 4 individual resistors. Does anyone know what the value for the resistors should be?
Also, how important is the MN13811-Q and are there any alternatives to this part? Does this just put a low on the reset pin when the supply voltage drops too low? And if so, how low before it triggers a reset?
Thanks,
- Rick
I have a couple of questions about the BASIC Stamp 1 OEM module (through hole version). This item is discontinued, but the interpreter chip is still available, so it would be relatively cheap to build or breadboard one. I downloaded the schematic and noticed that part RN1 doesn't have the values specified. This is a resistor network with 4 individual resistors. Does anyone know what the value for the resistors should be?
Also, how important is the MN13811-Q and are there any alternatives to this part? Does this just put a low on the reset pin when the supply voltage drops too low? And if so, how low before it triggers a reset?
Thanks,
- Rick
Comments
·· The Resistor pack is 10K.· As for the reset supervisor, I believe it kicks in around 4.7V or so.· In an OEM application necessisity would be defined by your application.· It may help during power-on conditions though.
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Chris Savage
Parallax Tech Support
csavage@parallax.com