Title:
SEMICONDUCTOR BOOSTER CIRCUIT
Document Type and Number:
Japanese Patent JP3483362
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To install a relief circuit of a capacitor in a booster circuit like a charge pumping circuit.
SOLUTION: Capacitors C1, C2,..., Cn-1, Cn are connected to each stage via fuses F1A, F2A,..., F(n-1)A, FnA, respectively, and spare capacitors C11, C12 are connected to each stage via transistors RT1, RT2,..., RTn-1, RTn. Gate potentials of the transistors RT1, RT2,..., RTn-1, RTn are controlled to be low via a flip- flop and fuses F1B, F2B,..., F(n-1)B, FnB, and the transistors RT1, RT2,..., RTn-1, RTn are made nonconductive. When the capacitor C1 is imperfect, the fuses F1A and F1B are cut off, and the capacitor C1 is substituted by the spare capacitor C11.
Inventors:
Katsuki Hasama
Application Number:
JP20148695A
Publication Date:
January 06, 2004
Filing Date:
July 14, 1995
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
G11C17/00; G11C16/06; H01L21/822; H01L27/04; H02M3/07; (IPC1-7): H01L21/822; G11C16/06; H01L27/04; H02M3/07
Domestic Patent References:
| JP487098A | ||||
| JP666898A | ||||
| JP6394142A | ||||
| JP63217821A | ||||
| JP61502650A |
Attorney, Agent or Firm:
Koetsu Kokubun