G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 1/24 (2006.01)
Patent
CA 2130935
The present invention provides a reset circuit with two different threshold input voltages. The reset circuit of the present invention is located within a processor, and is designed to control the reset functions of both the processor and the chips located peripheral to the processor. The reset circuit includes a first buffer with a first threshold voltage level. The input of the first buffer is connected to a reset signal and the output of the first buffer is connected to control the reset function of at least one chip that is peripheral to the processor. A second buffer is provided with a second threshold voltage level that is higher than the first threshold voltage level. The input of the second buffer is connected to the reset signal and the output of the second buffer is connected to control the reset function of the processor. The reset circuit guarantees that the processor is reset after the peripheral chips subsequent to power up.
La présente invention est un circuit de réinitialisation à deux tensions de seuil. Le circuit de l'invention se trouve dans un processeur et est conçu pour contrôler les fonctions de réinitialisation de ce processeur et des puces montées à la périphérie de ce dernier. Il comprend un premier tampon utilisant une première tension de seuil. L'entrée de ce tampon reçoit un signal de réinitialisation; le son signal de sortie du tampon commande la fonction de réinitialisation de l'une des puces au moins qui sont à la périphérie du processeur. Un second tampon utilise une seconde tension de seuil plus élevée que la première. Son entrée reçoit le signal de réinitialisation et son signal de sortie commande la fonction de réinitialisation du processeur. Le circuit de réinitialisation est construit de façon à réinitialiser le processeur après les puces périphériques à la mise sous tension.
Kasahara Shoichiro
Miyayama Yoshiyuki
Nakada Akira
Nakamura Jun
Hudson Soft Co. Ltd.
Seiko Epson Corporation
Sim & Mcburney
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