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Chapter 1 Overview
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Electrical Characteristics
1-6 Precautions
1-6-1 General Usage
Connection of VDD pin, and VSS pin
All VDD pins should be connected directly to the power supply and all Vss pins should be connected to
ground in the external. The following shows the correct connections and the incorrect connections. Please
consider the LSI chip orientation before mounting it on the printed circuit board. Incorrect connection may
lead a fusion and break a micro controller.
Cautions for Operation
(1) If you install the product close to high-field emissions (under the cathode ray tube, etc), shield
the package surface to ensure normal performance.
(2) Please consider the operation temperature. The guaranteed operation temperature differs on each
model. For example, if temperature is over the operating condition, its operation may be executed
wrongly.
(3) Please consider the operation voltage. The guaranteed operation voltage differs on each model.
-If the operation voltage is over the operation range, it can be shortened the length of its life.
-If the operation voltage is below the operating range, its operation may be executed wrongly.