Hardware manual

33
FUJITSU SEMICONDUCTOR CONFIDENTIAL
MB96630 Series
DS704-00012-1v0-E
• Note that when the microcontroller drive current is low, such as in the power saving modes, the +B input
potential may pass through the protective diode and increase the potential at the V
CC
pin, and this may
affect other devices.
• Note that if a +B signal is input when the microcontroller power supply is off (not fixed at 0V), the power
supply is provided from the pins, so that incomplete operation may result.
• Note that if the +B input is applied during power-on, the power supply is provided from the pins and the
resulting supply voltage may not be sufficient to operate the Power reset.
• The DEBUG I/F pin has only a protective diode against V
SS
. Hence it is only permitted to input a negative
clamping current (4mA). For protection against positive input voltages, use an external clamping diode
which limits the input voltage to maximum 6.0V.