Semiconductor device
First Claim
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1. A semiconductor device comprising:
- two NMOS transistors and two PMOS transistors for an SRAM latch;
two NMOS pass gates for reading and writing a HIGH condition and a LOW condition that are formed in the SRAM latch; and
two floating gate NVM devices of split gate structure for storing the HIGH condition and the LOW condition that are stored in the SRAM latch when the power is off.
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Abstract
An nvSRAM having a stacked oxide layer is disclosed. A disclosed device comprises: two NMOS transistors and two PMOS transistors for an SRAM latch; two NMOS pass gates for reading and writing a HIGH condition and a LOW condition that are formed in the SRAM latch; and two floating gate NVM devices of split gate structure for storing the HIGH condition and the LOW condition that are stored in the SRAM latch when the power is off.
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Citations
7 Claims
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1. A semiconductor device comprising:
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two NMOS transistors and two PMOS transistors for an SRAM latch;
two NMOS pass gates for reading and writing a HIGH condition and a LOW condition that are formed in the SRAM latch; and
two floating gate NVM devices of split gate structure for storing the HIGH condition and the LOW condition that are stored in the SRAM latch when the power is off. - View Dependent Claims (2, 3, 4)
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5. A semiconductor device comprising:
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a semiconductor substrate of the first conductive type;
a MOS transistor of the first conductive type including a first well of the second conductive type in the semiconductor substrate a gate on the first well of the second conductive type and impurity regions of the first conductive type under the sidewalls of the gate;
a MOS transistor of the second conductive type including a first well of the first conductive type in the substrate neighboring a device isolation structure next to the first well of the second conductive type, a gate on the first well of the first conductive type and impurity regions of the second conductive type under the sidewalls of the gate;
a second well of the first conductive type in the substrate neighboring a device isolation structure next to the first well of the first conductive type;
a second well of the second conductive type under the second well of the first conductive type;
a floating gate NVM device of split gate structure on the second well of the first conductive type, and source and drain regions of the second conductive type in the second well of the first conductive type; and
an impurity region of the first conductive type in the second well of the first conductive type. - View Dependent Claims (6, 7)
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Specification