Power-up reset signal generating circuit for an integrated circu

Details Power-up reset signal generating circuit for an integrated circu Power-up reset signal generating circuit for an integrated circu

1996-05-14

1998-06-16

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327198, H03K 1722, H03K 17687

Patent

active

057677107

ABSTRACT:
A power-up reset signal generating circuit ensures proper operation of an integrated circuit upon power up by inhibiting operation, or forcing predetermined logic states, until the applied power supply voltage reaches at least an acceptable operating voltage level. The present circuit monitors both the supply voltage and a separate back bias voltage that appears in high density integrated circuits such as DRAM circuits. The reset signal initially rises in proportion to the applied supply voltage, and then is pulled down to a logic low level in response to assertion of the back bias voltage, thereby forming a logic transition in the reset signal. Qualifying the reset signal by monitoring the on-board back bias voltage generator ensures that the supply voltage has reached an acceptable operating level, even in circuits where the nominal MOS threshold voltage is reduced, because the reset signal does not change state until the back bias voltage generator is functioning.

REFERENCES:
patent: 4461963 (1984-07-01), Koomen
patent: 5030845 (1991-07-01), Love et al.
patent: 5130569 (1992-07-01), Glica
patent: 5321317 (1994-06-01), Pascucci et al.
patent: 5349244 (1994-09-01), Confalonieri
patent: 5374923 (1994-12-01), Sakamoto
patent: 5396115 (1995-03-01), Coffman et al.

Affiliated with

Also associated with

Rating

Power-up reset signal generating circuit for an integrated circu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power-up reset signal generating circuit for an integrated circu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power-up reset signal generating circuit for an integrated circu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1730244