Forward body bias-controlled semiconductor integrated circuit

1. A semiconductor integrated circuit including a plurality of functional blocks, wherein:

a substrate voltage input terminal of an insulated-gate field effect transistor of a first conductivity type included in a first functional block and a source voltage input terminal of an insulated-gate field effect transistor of a second conductivity type included in the first functional block are respectively connected with a substrate voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included in a second functional block and a source voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in the second functional block; and

a plurality of constant voltage circuits, each of which supplies predetermined voltages to a substrate voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in one of the plurality of functional blocks or to a source voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included in the one of the plurality of functional blocks,

wherein at least one of the plurality of constant voltage circuits includes four voltage output terminals connected to the source voltage input terminals and the substrate voltage input terminals of the insulated-gate field effect transistors of the first and second conductivity types included in one of the plurality of functional blocks, respectively, and a voltage selected according to an input signal is output from each of the four voltage output terminals.

2. A semiconductor integrated circuit including a plurality of functional blocks, wherein:

a substrate voltage input terminal of an insulated-gate field effect transistor of a first conductivity type included in a first functional block and a source voltage input terminal of an insulated-gate field effect transistor of a second conductivity type included in the first functional block are respectively connected with a substrate voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included in a second functional block and a source voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in the second functional block, wherein:

at least one of the plurality of functional blocks has a triple-well structure including a semiconductor substrate of a first one of the first and second conductivity types with a retrograde well of a second one of the first and second conductivity types being formed on the semiconductor substrate, and with a well of the first one of the first and second conductivity types being formed on the retrograde well, and

the retrograde well is insulated from the semiconductor substrate by an insulating layer.

3. A semiconductor integrated circuit including a plurality of functional blocks, wherein:

a substrate voltage input terminal of an insulated-gate field effect transistor of a first conductivity type included in a first functional block and a source voltage input terminal of an insulated-gate field effect transistor of a second conductivity type included in the first functional block are respectively connected with a substrate voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included in a second functional block and a source voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in the second functional block, wherein:

at least one of the plurality of functional blocks includes: a plurality of first lines for supplying a substrate voltage for an insulated-gate field effect transistor of the first conductivity type included in the functional block; and a plurality of second lines for supplying a substrate voltage for an insulated-gate field effect transistor of the second conductivity type included in the functional block,

the first and second lines extend parallel to each other and alternate with each other, with the insulated-gate field effect transistors of the first and second conductivity types being interposed therebetween, and

the at least one function block includes a line control section for thinning out voltages supplied through the plurality of first and second lines according to a magnitude of a forward body bias to be applied to each of the insulated-gate field effect transistors of the first and second conductivity types included in the functional block.

4. A semiconductor integrated circuit including a plurality of functional blocks, wherein:

a substrate voltage input terminal of an insulated-gate field effect transistor of a first conductivity type included in a first functional block and a source voltage input terminal of an insulated-gate field effect transistor of a second conductivity type included in the first functional block are respectively connected with a substrate voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included in a second functional block and a source voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in the second functional block, wherein:

at least one of the plurality of functional blocks includes: a plurality of first lines for supplying a substrate voltage for an insulated-gate field effect transistor of the first conductivity type included in the functional block; and a plurality of second lines for supplying a substrate voltage for an insulated-gate field effect transistor of the second conductivity type included in the functional block,

the first and second lines extend parallel to each other and alternate with each other, with the insulated-gate field effect transistors of the first and second conductivity types being interposed therebetween,

the at least one functional block has a triple-well structure including a semiconductor substrate of one of the first and second conductivity types with a retrograde well of another of the first and second conductivity types being formed on the semiconductor substrate, and with a well of the one of the first and second conductivity types being formed on the retrograde well, and

one of the first and second lines that supplies a substrate voltage to an insulated-gate field effect transistor of another one of the first and second conductivity types is located on the retrograde well outside a region of the well.

5. A semiconductor integrated circuit including a first to a fourth functional blocks, wherein:

a source voltage input terminal of an insulated-gate field effect transistor of a first conductivity type included in the first functional block and a substrate voltage input terminal of an insulated-gate field effect transistor of a second conductivity type included therein are connected to a first and a second voltage supply terminals, respectively;

a substrate voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in an ith (where 1≦i≦3) functional block and a source voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included therein are connected respectively with a source voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in an i+1th functional block and a substrate voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included therein;

a substrate voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in the fourth functional block and a source voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included therein are connected to a third and a fourth voltage supply terminals, respectively;

a substrate voltage input terminal of an insulated-gate field effect transistor of the first conductivity type included in the second functional block and a substrate voltage input terminal of the insulated-gate field effect transistor of the second conductivity type included in the fourth functional block are connected together; and

a source voltage input terminal of an insulated-gate field effect transistor of the second conductivity type included in the second functional block and a source voltage input terminal of the insulated-gate field effect transistor of the first conductivity type included in the fourth functional block are connected together.