To easily design a microcomputer in which the optima operating temperature range of a semiconductor chip is set, and to prevent the malfunction or runaway of the microcomputer even at high temperatures.
In this microcomputer on which a temperature sensor is loaded, a pair of circuit blocks 32 and 33 are provided with respective diodes 3 and 12 as temperature sensor so that the diodes are of opposite polarities, and this part of circuit blocks 32 and 33 are commonly provided with terminals 4 and 7 connected with both ends of the diodes 3 and 12 for supplying fixed currents If to both ends of the diodes 3 and 12 and terminals 5 and 6 connected with both ends of the diodes 3 and 12, so as to be closer to both ends of the diodes 3, 12 than the terminals 4 and 7 for reading a voltage Vf of the diodes 3 and 12.
MORI SHINTARO
TERAYAMA FUMIHIKO
KITAMURA MASAHIRO
YAMAZAKI SEIICHI
MORIGUCHI YASUO
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