CMOS power-on reset circuit using hysteresis

Details CMOS power-on reset circuit using hysteresis CMOS power-on reset circuit using hysteresis

1995-02-13

1996-07-09

Westin, Edward P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327205, 326 27, H03K 190948

Patent

active

055348041

ABSTRACT:
A CMOS power-on reset circuit for generating a reset signal in response to the activation of a power supply includes a voltage clamping stage (14) and a hysteresis switching stage (16). The voltage clamping stage (14) is formed of an N-channel resistor (M1), a first resistor (R1), and a second resistor (R2). The hysteresis switching stage (16) includes a P-channel pull-up transistor (M2), a first N-channel pull-down transistor (M3), a current-source transistor (M4), a second N-channel pull-down transistor (M5), and an inverter (G1).

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patent: 5334883 (1994-08-01), Rosenthal
patent: 5349244 (1994-09-01), Confalonieri
patent: 5440255 (1995-08-01), Fournel

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