Integrated circuit device and electronic instrument
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 5, 2011
Grant Date -
Oct 16, 2008
app pub date -
Apr 9, 2008
filing date -
Apr 12, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An interface circuit is provided between a first circuit block and a second circuit block that operates using a power supply system differing from that of the first circuit block. An electrostatic discharge protection circuit that include a PN diode and a diffused resistor is formed in order to prevent electrostatic discharge destruction of a gate insulating film of a transistor that forms the interface circuit. The electrostatic discharge protection circuit may be formed using the remaining basic cells of a gate array that forms the second circuit block. An electrostatic discharge protection circuit formed of a bidirectional diode may be connected between a first low-potential power supply and a second low-potential power supply.
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