Semiconductor integrated circuit device and I/O cell for the...

Details Semiconductor integrated circuit device and I/O cell for the... Semiconductor integrated circuit device and I/O cell for the...

2006-03-09

2009-02-10

Pert, Evan (Department: 2826)

Active solid-state devices (e.g., transistors, solid-state diode

Gate arrays

With particular chip input/output means

C327S565000

Reexamination Certificate

active

07488995

ABSTRACT:
In a semiconductor integrated circuit device in which a plurality of I/O cells having level shift circuits are placed in an I/O region, two input/output cells respectively have four level shift circuits11, 12ato12c.A power supply cell, originally including only wiring for supply of a power supply voltage or a ground voltage, is additionally provided with three level shift circuits, which should originally be placed in the two input/output cells. The level shift circuits in the power supply cell are circuits asked for no high-speed operation and shared by the two input/output cells. This reduces the size of the two input/output cells and reduces the pitch of the I/O cells, permitting a larger number of required pins in a smaller area.

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