Handling Device; Handling The Device - Fujitsu F2MCTM-16LX Hardware Manual

1.7

Handling Device

This section explains notes on handling the MB90360 series.

Handling the Device

Preventing latch-up
CMOS IC chips may suffer latch-up under the following conditions:
• A voltage higher than V
• A voltage higher than the rated voltage is applied between V
• The AV
Latch-up may increase the power supply current drastically, causing thermal damage to the device.
When used, note that maximum rated voltage is not exceeded.
For the same reason, also be careful not to let the analog power-supply voltage (AV
digital power-supply voltage.
Treatment of unused pins
Leaving unused input pins open may result in misbehavior or latch up and possible permanent damage of
the device. Therefore, they must be pulled up or pulled down through resistors. In this case those resistors
should be more than 2 kΩ.
Unused bidirectional pins should be set to the output state and can be left open, or the input state with the
above described connection.
or lower than V
CC
power supply is applied before the V
CC
is applied to an input or output pin.
SS
and V
CC
voltage.
CC
CHAPTER 1 OVERVIEW
.
SS
AVR) exceed the
CC,
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