TMCM-1141 Hardware Manual (Rev. 1.06 / 2015-JAN-09)
14
Since hardware version 1.3 the gate inputs of the MOSFETs are pulled-low during power-up and while
the processor is still in reset / output pins not initialized. This way, the outputs will not briefly switch on
at power-up.
With TMCL firmware OUT_0 can be switched on (OUT_0 pulled low) using command SIO 0, 2, 1 and
off again (OUT_0 floating) using command SIO 0, 2, 0. Quite similar OUT_1 can be switched on
(OUT_1 pulled low) using command SIO 1, 2, 1 and off again (OUT_1 floating) using command SIO
1, 2, 0. Factory default setting for both outputs is off (floating). In case a floating output is not
desired in the application an external resistor to e.g. supply voltage may be added.
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