EP0347853A2 — Semiconductor integrated circuit

Claim 1

Independent Claim 114 words

A semiconductor integrated circuit comprising: a semiconductor chip (1), a plurality of mats (A to T) of a substantially equal size formed on said semiconductor chip, each of said plurality of mats including a plurality of circuit elements (10 to 13), partition regions (4) for separating said plurality of mats (A to T) from each other, and a pair of power supply line (2) and ground line (3) provided on each of said partition regions (4), an electronic circuit formed on said semiconductor chip including circuit blocks having different functions but being designed by using each of said mats (A to T) as a unit, not each of the circuit blocks as a unit.

Claim 2

Dependent Claim 114 words

A semiconductor integrated circuit comprising: a semiconductor chip (1), a plurality of mats (A to T) of a substantially equal size formed on said semiconductor chip, each of said plurality of mats including a plurality of circuit elements (10 to 13), partition regions (4) for separating said plurality of mats (A to T) from each other, and a pair of power supply line (2) and ground line (3) provided on each of said partition regions (4), an electronic circuit formed on said semiconductor chip including circuit blocks having different functions but being designed by using each of said mats (A to T) as a unit, not each of the circuit blocks as a unit.

Claim 3

Dependent Claim 89 words

A semiconductor integrated circuit in accordance with claim 1, wherein the power supply lines (2) on said partition regions (4) extend from a bundle (5, 5a, 5b) of power supply lines in a comb-teeth form and the ground lines (3) on said partition regions (4) also extend from a bundle (6, 6a, 6c) of ground lines in a comb-teeth form, the comb-teeth form of said power supply lines (2, 5, 5a, 5b) and the comb-teeth form of said ground lines (3, 6, 6a, 6c) being opposite to each other.

Claim 4

Dependent Claim 36 words

A semiconductor integrated circuit in accordance with claim 2, wherein said power supply lines (2, 5, 5a, 5b) and said ground lines (3, 6, 6a, 6c are formed substantially by conductors in a first conductor layer.

Claim 5

Dependent Claim 48 words

A semiconductor integrated circuits in accordance with claim 3, wherein circuit elements in each of said mats (A to T) are interconnected substantially by conductors (8) in the first conductor layer and said mats (A to T) are interconnected substantially by conductors (7a) in a second conductor layer.

Claim 6

Dependent Claim 55 words

A semiconductor integrated circuit in accordance with claim 4, wherein said mats (A to T) are interconnected by the conductors (7a) in the second conductor layer connected to both ends of a conductor segment (7b) in the first conductor layer provided between the power supply line (2) and the ground line (3) of said pair.

Claim 7

Dependent Claim 45 words

A semiconductor integrated circuit in accordance with claim 1, wherein said semiconductor chip (1) is divided into first and second regions (41, 42) spaced from each other by a division region 40) and said plurality of mats are formed in said first and second regions.

Claim 8

Dependent Claim 34 words

A semiconductor integrated circuit in accordance with claim 1, wherein at least one mat of said plurality of mats (A to T) is a capacitor mat (E) including only capacitors (13) as circuit elements.

Claim 9

Dependent Claim 51 words

A semiconductor integrated circuit in accordance with claim 7, wherein ground lines (3a, 3b, 3f, 6a are provided on at least one side of said capacitor mat (E) and said ground lines (3a, 3b, 3f, 6a) along the total lengths thereof are in ohmic conduct with separation regions (17) lying thereunder.

Claim 10

Dependent Claim 26 words

A semiconductor integrated circuit in accordance with claim 7, wherein each of said capacitors (13) is formed in an island (18) surrounded by separation regions (17).

Claim 11

Dependent Claim 59 words

A semiconductor integrated circuit in accordance with claim 8, wherein ground lines (3c) are further provided to extend in a comb-teeth form from at least one of the ground lines (3a) on at least one side of said capacitor mat (E) and said ground lines (3c) in the comb-teeth form are in ohmic contact with underlying separation regions (17).

Claim 12

Dependent Claim 34 words

A semiconductor integrated circuit in accordance with claim 7, wherein said capacitor mat (E) is disposed at one end of a group of the mats (E to I) where one circuit block is formed.

Claim 13

Dependent Claim 52 words

A semiconductor integrated circuit in accordance with claim 1, wherein the two circuit blocks (25, 26) where it is necessary to prevent mutual interference are formed in the two groups of mats (E to I and K to M) spaced from each other in a diagonal direction of said semiconductor chip (1).

Claim 14

Dependent Claim 43 words

A semiconductor integrated circuit in accordance with claim 12, wherein said electronic circuit is an AM/FM stereo tuner and the two circuit blocks where it is necessary to prevent mutual interference are an FM front end block (25) and an FM-IF block (26).

Claim 15

Dependent Claim 36 words

A semiconductor integrated circuit in accordance with claim 13, wherein an oscillating circuit (53) included in said FM front end block (25) is formed in the mat (K) at a corner of said semiconductor chip (1).

Claim 16

Dependent Claim 71 words

A semiconductor integrated circuit in accordance with claim 6, wherein spaces are provided in which a bundle (5c, 6b) of conductors is disposed between adjacent two mats (D, E; M, N) in adjacent groups of mats (A to D, E to I; K to M, N to P) in either said first region or said second region (41, 42) out of the groups of mats where the circuit blocks are formed.

Claim 17

Dependent Claim 23 words

A semiconductor integrated circuit in accordance with claim 6, wherein one or more elongate dummy islands are provided in said division region (40).

Claim 18

Dependent Claim 31 words

A semiconductor integrated circuit in accordance with claim 6, wherein one or more elongate dummy islands are provided under each said space where said bundle of conductors (5c, 6b are disposed.

Claim 19

Dependent Claim 29 words

A semiconductor integrated circuit in accordance with claim 13, wherein the mat group (K to M) including said FM front end block (25) is surrounded by dummy islands (71).

Claim 20

Dependent Claim 33 words

A semiconductor integrated circuit in accordance with claim 14, wherein the mat including the oscillating circuit (53) included in said FM front end block (25) is entirely surrounded by dummy islands (71, 72).

Claim 21

Dependent Claim 95 words

A semiconductor integrated circuit in accordance with claim 6, wherein said electronic circuit includes first and second circuit blocks (29, 26) not operating simultaneously and a third circuit block 28 operating at all times, the mats (a to D, E to I) including said first and second circuit blocks (29, 26) utilize in common a first power supply pad (Vcc1) and a first ground pad (GND1) on said semiconductor chip (1), and the mats (Q to T) including said third circuit block utilize a second power supply pad (Vcc4) and a second ground pad (GND4).

Claim 22

Dependent Claim 47 words

A semiconductor integrated circuit in accordance with claim 20, wherein said electronic circuit is an FM/FM stereo tuner , said first and second circuit blocks are an AM tuner block (29) and an FM-IF block (26), and said third circuit block is a multiplex decoder block (28).

Claim 23

Dependent Claim 98 words

A semiconductor integrated circuit in accordance with claim 20, wherein said semiconductor integrated circuit further comprises a power supply lead (65) and a ground lead (66), said first and second power supply pads (Vcc1, Vcc4) are disposed adjacent to each other on said semiconductor chip (1) and each of said pads is connected to said power supply lead (65) by a single fine metallic wire, and said first and second ground pads (GND1, GND4) are provided adjacent to each other and each of said pads is connected to said ground lead (66) by a single fine metallic wire.

Claim 24

Dependent Claim 72 words

A semiconductor integrated circuit in accordance with claim 1, wherein said electronic circuit includes first and second circuit sections not operating simultaneously, each of said circuit sections includes one or more circuit blocks and one or more mats where one or more circuit blocks of one of said circuit sections are formed between the mats including the circuit block of the other circuit section where it is necessary to prevent mutual interference.

Claim 25

Dependent Claim 28 words

A semiconductor integrated circuit in accordance with claim 23, wherein the mats of said first circuit section and the mats of said second circuit section are formed alternately.

Claim 26

Dependent Claim 116 words

A semiconductor integrated circuit for an AM/FM stereo tuner, comprising: a semiconductor chip (1) having a substantially rectangular form, an FM front end circuit block (25) provided near a first corner of said semiconductor chip (1), an FM-IF circuit block (26) provided near a second corner of said semiconductor chip (1), spaced from said FM front end circuit block (20) in a diagonal direction of said semiconductor chip (1), and a multiplex decoder circuit block (28) and an AM tuner circuit block provided near third and fourth corners, respectively, spaced from each other in other diagonal direction on said semiconductor chip, whereby said respective circuit blocks (25, 26, 28, 29) being sufficiently spaced from each other.

Claim 27

Dependent Claim 116 words

A semiconductor integrated circuit for an AM/FM stereo tuner, comprising: a semiconductor chip (1) having a substantially rectangular form, an FM front end circuit block (25) provided near a first corner of said semiconductor chip (1), an FM-IF circuit block (26) provided near a second corner of said semiconductor chip (1), spaced from said FM front end circuit block (20) in a diagonal direction of said semiconductor chip (1), and a multiplex decoder circuit block (28) and an AM tuner circuit block provided near third and fourth corners, respectively, spaced from each other in other diagonal direction on said semiconductor chip, whereby said respective circuit blocks (25, 26, 28, 29) being sufficiently spaced from each other.

Claim 28

Dependent Claim 66 words

A semiconductor integrated circuit comprising: a semiconductor chip (1) a region (E) where only a plurality of capacitors are formed on said semiconductor chip (1), ground lines (3a, 3b, 3f, 6a) provided at least along one side of said region (E), and separation regions (17) under said ground lines, being in ohmic contact with said ground lines (3a, 3b, 3f, 6a) along the total length thereof.

Claim 29

Dependent Claim 66 words

A semiconductor integrated circuit comprising: a semiconductor chip (1) a region (E) where only a plurality of capacitors are formed on said semiconductor chip (1), ground lines (3a, 3b, 3f, 6a) provided at least along one side of said region (E), and separation regions (17) under said ground lines, being in ohmic contact with said ground lines (3a, 3b, 3f, 6a) along the total length thereof.

Claim 30

Dependent Claim 58 words

A semiconductor integrated circuit in accordance with claim 26, wherein ground lines (3c) are further provided to extend in a comb-teeth form into said region (E) from the ground line (3a) along at least one side of said region (E) and said ground lines (3c) in the comb-teeth form are also in ohmic contact with separation regions thereunder.

Semiconductor integrated circuit

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