One pin, one component oscillator with GA144
- From: Albert van der Horst <albert@xxxxxxxxxxxxxxxxxx>
- Date: 28 Jun 2012 15:38:21 GMT
Chuck Moore has published the code to run an oscillator on one
processor of a GA114 chip. It uses a single 10 Mhz resonator and no
other components hanging off one pin. This works in principle also
with a crystal (which led to some controversy here), but it is harder
to get started because of the enormous q-factor of a crystal.
This hinges on submicrosecond switching between input and
output on the same pin, and the ability to wait for a zero
and the ability to wait for a one on that same pin.
http://www.colorforth.com/b942.htm
(6 lines of code and two lines starting the oscillation.)
To understand the code you may need a visit to
http://www.colorforth.com/etherCode.htm
http://www.greenarraychips.com/index.html
Groetjes Albert
--
--
Albert van der Horst, UTRECHT,THE NETHERLANDS
Economic growth -- being exponential -- ultimately falters.
albert@spe&ar&c.xs4all.nl &=n http://home.hccnet.nl/a.w.m.van.der.horst
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