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Preliminary
MC80F0104/0204
Mar. 2005 Ver 0.2
95
viewing from external MCU is very high that the current
doesn’t flow.
But input voltage level should be V
SS
or V
DD
. Be careful
that if unspecified voltage, i.e. if uncertain voltage level
(not V
SS
or V
DD
) is applied to input pin, there can be little
current (max. 1mA at around 2V) flow.
If it is not appropriate to set as an input mode, then set to
output mode considering there is no current flow. The port
setting to High or Low is decided by considering its rela-
tionship with external circuit. For example, if there is ex-
ternal pull-up resistor then it is set to output mode, i.e. to
High, and if there is external pull-down register, it is set to
low.
Содержание MC80C0104
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