Semiconductor integrated circuit having a power-on reset...

Details Semiconductor integrated circuit having a power-on reset... Semiconductor integrated circuit having a power-on reset...

2007-03-20

2007-03-20

Auduong, Gene N. (Department: 2827)

Static information storage and retrieval

Read/write circuit

Including reference or bias voltage generator

C365S194000, C365S226000

Reexamination Certificate

active

11065200

ABSTRACT:
A semiconductor integrated circuit, which operates in accordance with a power supply voltage and an external clock signal and includes a memory circuit, includes a control circuit, and first and second internal circuits. The control circuit controls the memory circuit in accordance with the power supply voltage. The first internal circuit generates an internal power supply voltage for the control circuit. The second internal circuit generates an internal clock signal for the control circuit. The semiconductor integrated circuit further includes first and second power-on reset circuits. The first power-on reset circuit generates a first power-on reset signal for the first internal circuit after the power supply voltage is generated. The second power-on reset circuit generates a second power-on reset signal for the control circuit. The second power-on reset signal is input to the control circuit after the internal clock signal is input to the control circuit.

REFERENCES:
patent: 4933902 (1990-06-01), Yamada et al.
patent: 5365481 (1994-11-01), Sawada
patent: 5436586 (1995-07-01), Miyamoto
patent: 5936443 (1999-08-01), Yasuda et al.
patent: 6011447 (2000-01-01), Iwasaki
patent: 6552946 (2003-04-01), Yokozeki
patent: 6686783 (2004-02-01), Huang
patent: 2002-299436 (2000-10-01), None
patent: 2002-50200 (2002-02-01), None

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