摘要:
When an electrostatic discharge event occurs to a connection pad of a chip, an electrostatic discharge detector layout in a feedback loop is able to detect an induced electrostatic discharge voltage for generating a control signal. A pass transistor can be turned off by the control signal for isolating the induced electrostatic discharge voltage, and the internal circuit of the chip can be protected from being damaged by the induced electrostatic discharge voltage. Furthermore, the designed circuit based on electrostatic discharge isolation technique for protecting the internal circuit of the chip is compatible with programmable circuits, and the connection pad can be furnished with burning signals or logic signals.
摘要:
When an electrostatic discharge event occurs to a connection pad of a chip, an electrostatic discharge detector layout in a feedback loop is able to detect an induced electrostatic discharge voltage for generating a control signal. A pass transistor can be turned off by the control signal for isolating the induced electrostatic discharge voltage, and the internal circuit of the chip can be protected from being damaged by the induced electrostatic discharge voltage. Furthermore, the designed circuit based on electrostatic discharge isolation technique for protecting the internal circuit of the chip is compatible with programmable circuits, and the connection pad can be furnished with burning signals or logic signals.
摘要:
An ESD avoiding circuit includes a first ESD protection unit, an ESD detection unit, a switch unit, and an RC filter unit. The first ESD protection unit transmits an ESD current between a first conducting path and a second conducting path. The ESD detection unit is coupled to the first conducting path. The ESD detection unit includes an input terminal, and an output terminal coupled to the first ESD protection unit for detecting an ESD and controlling the first ESD protection unit to conduct the ESD current according to a detection result. The switch unit is coupled between the first conducting path and a core circuit and conducts the first conducting path to the core circuit according to signals of the input terminal and the output terminal of the ESD detection unit. The RC filter unit couples a first voltage to the input terminal of the ESD detection unit.
摘要:
An ESD avoiding circuit includes a first ESD protection unit, an ESD detection unit, a switch unit, and an RC filter unit. The first ESD protection unit transmits an ESD current between a first conducting path and a second conducting path. The ESD detection unit is coupled to the first conducting path. The ESD detection unit includes an input terminal, and an output terminal coupled to the first ESD protection unit for detecting an ESD and controlling the first ESD protection unit to conduct the ESD current according to a detection result. The switch unit is coupled between the first conducting path and a core circuit and conducts the first conducting path to the core circuit according to signals of the input terminal and the output terminal of the ESD detection unit. The RC filter unit couples a first voltage to the input terminal of the ESD detection unit.
摘要:
An electrostatic discharge (ESD) avoiding circuit comprises an ESD detecting unit and a switch unit. The ESD detecting unit is coupled to a first conductive path for detecting whether the ESD happened or not. The switch unit is coupled between the first conductive path and a core circuit for switching whether the first conductive path is conducted to the core circuit or not according to a detection result of the ESD detecting unit. The ESD avoiding circuit can avoid an electrostatic current transmitting to the core circuit when the ESD is happened, and the ESD avoiding circuit can make the normal signal/voltage providing to the core circuit for operating when the ESD isn't happened.
摘要:
A one-time programmable read-only memory (OTP-ROM) including a substrate, a first doped region, a second doped region, a third doped region, a first dielectric layer, a select gate, a second dielectric layer, a first channel, a second channel and a silicide layer is provided. The first doped region, the second doped region and the third doped region are disposed apart in a substrate. The first dielectric layer is disposed on the substrate between the first doped region and the second doped region. The select gate is disposed on the first dielectric layer. The second dielectric layer is disposed on the substrate between the second doped region and the third doped region. The silicide layer is disposed on the first doped region, the second doped region and the third doped region. The OTP-ROM stores data by a punch-through effect occurring between the second doped region and the third doped region.
摘要:
A non-volatile memory cell includes an ion well of a semiconductor substrate; a first half-transistor having a firs select gate, a first diffusion region in the ion well, and a first gate dielectric layer between the first select gate and the ion well; a second half-transistor disposed adjacent to the first half-transistor, wherein the second half-transistor has a second select gate spaced apart from the first select gate, a second diffusion region in the ion well, and a second gate dielectric layer between the second select gate and the ion well. The first and second half-transistors are mirror-symmetrical to each other.
摘要:
The invention provides a nonvolatile memory apparatus. The nonvolatile memory apparatus comprises a plurality of memory cells and a signal generator. The memory cells are arranged in an array, and each of the memory cells has a control gate terminal, a floating gate, a source line terminal, a bit-line terminal, a selected gate terminal and a word-line terminal. The signal generator is coupled to the memory cells. When the nonvolatile memory apparatus executes a programming operation, the signal generator provides a programming signal to the control gate terminals of a plurality of inhibited memory cells among the memory cells. Wherein, the programming signal is a pulse signal with a direct-current (DC) offset voltage.
摘要:
An erasable programmable single-poly nonvolatile memory includes a floating gate transistor having a floating gate, a gate oxide layer under the floating gate, and a channel region; and an erase gate region, wherein the floating gate is extended to and is adjacent to the erase gate region. The gate oxide layer comprises a first portion above the channel region of the floating gate transistor and a second portion above the erase gate region, and a thickness of the first portion of the gate oxide layer is different from a thickness of the second portion of the gate oxide layer.
摘要:
An erasable programmable single-poly nonvolatile memory includes a first PMOS transistor comprising a select gate, a first p-type doped region, and a second p-type doped region, wherein the select gate is connected to a select gate voltage, and the first p-type doped region is connected to a source line voltage; a second PMOS transistor comprising the second p-type doped region, a third p-type doped region, and a floating gate, wherein the third p-type doped region is connected to a bit line voltage; and an erase gate region adjacent to the floating gate, wherein the erase gate region is connected to an erase line voltage.