摘要:
There is provided a semiconductor integrated circuit having peripheral cell array including I/O cells and power supply cells, the cell array comprising first type cells having second level wiring layers consisting of a reference power supply (GND) wiring and a first power supply wiring, and second type cells having the second level wiring layers consisting of the reference power supply wiring, first and second power supply wirings. The second type cells are arranged in a predetermined area collectively and first and/or second power supply voltage are supplied to predetermined cells, through the second level wiring layers.
摘要:
There is provided a semiconductor integrated circuit including an output circuit having a first buffer section to which a first power supply voltage is applied and an input signal is supplied to amplify and output the input signal, and a second buffer section to which a second power supply voltage is applied and a signal output from said first buffer section is supplied to amplify and output the signal outside through an output terminal, a switching element which has two terminals respectively connected to said output terminal and a ground voltage terminal and receives a control signal to change a conductive resistance, and a bias circuit for receiving the input signal or a signal output from said first buffer section, generating a control signal, and supplying the control signal to said switching element to control the conductive resistance of said switching element so as not to allow a potential of said output terminal to exceed a predetermined value.