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Why is the pulse output momentarily from the pin?

Latest Updated:09/21/2010

Question:

When switching a pin function or the operating mode of a peripheral function, a pulse is output momentarily from the pin. Why?

Answer:

In general, when a pin function or the operating mode of a peripheral function is switched, due to the margin of delay in the switching signal of the internal switching circuit, a short pulse of several ns may be output before the function or operating mode switches.
Suitable Products
R8C/1x
R8C/2x
R8C/3x
R8C/Lx
R8C/Mx
M16C Family (R32C/M32C/M16C)