摘要:
A method and system for detecting a potential reliability problem cause by electrical bridging in an integrated circuit. A voltage difference is created between two conducting lines in the integrated circuit to accelerate the bridging effect for a predetermined period of time. The conducting lines are detected to determine whether an undesired connection has occurred due to the bridging effect between the conducting lines.
摘要:
Disclosed herein is a back-bias voltage regulator circuit for regulating a back-bias voltage used to control leakage current in at least one transistor within a primary circuit. In one embodiment, the back-bias voltage regulator circuit includes a voltage divider circuit configured to receive a back-bias voltage from a charge pump, and to generate a divided voltage signal by dividing the back-bias voltage based on a ratio of resistances of resistive elements within the voltage divider. In addition, the regulator circuit includes an output circuit configured to receive the back-bias voltage from the charge pump and having an output node for outputting the back-bias voltage, as well as a reference voltage circuit configured to generate a reference voltage signal based on a threshold voltage of the at least one transistor in the primary circuit. Also in such an embodiment, the regulator circuit includes a comparison circuit configured to compare the divided voltage signal to the reference voltage signal and to operate the output circuit to regulate the back-bias voltage level based on the comparison. Also disclosed is a related method of regulating a back-bias voltage to control leakage current in at least one transistor within a primary circuit.
摘要:
A circuit for the operation of flash memories is proposed. By applying a raised voltage on unselected bit lines of a flash memory array during the programming process, the present invention prevents unselected flash cells from undesired programming disturbances. In the programming process, unselected bit lines of the flash memories are provided with a raised voltage higher than the high state operating voltage of the flash memories, in order to prevent undesired disturbances. In the operation circuit, a current limiting circuit is applied for providing the drain current, and a raised voltage source is employed for supplying a raised voltage to the current limiting circuit, in order provide a raised voltage for unselected bit lines.