Patent ID: 6631467
Filing Date: 2003-10-07
Classification: G06F

Abstract:
A microcomputer with an internal reset signal generator for generating an internal reset signal from an external reset signal supplied to a chip reset input terminal and for supplying the internal reset signal to internal circuits of the microcomputer through a reset signal line, said internal reset signal generator comprising:a first two-input logic circuit having its first gate input terminal connected to the chip reset input terminal, for outputting a first logic signal at a low level only when its two gate input terminals are placed at a high level; an inverter for inverting the first logic signal and supplying its output to a second gate input terminal of the first two-input logic circuit; a capacitor connected between the second gate input terminal and a higher potential power supply; and a second two-input logic circuit supplied with the first logic signal and the external reset signal, for changing the level of the internal reset signal only when both the inputs are at the high level.