Patent application number | Description | Published |
20100085088 | Semiconductor device and method of supplying internal power to semiconductor device - Provided is a semiconductor device including a step-down circuit group including multiple step-down circuits that step down an external power supply voltage to a predetermined voltage; multiple functional circuits that require a reset operation upon power-on; and a power-on reset circuit that outputs a reset command to the multiple functional circuits, when an internal power supply voltage supplied from the step-down circuit group exceeds a voltage level necessary for an initialization operation. The multiple step-down circuits of the step-down circuit group are classified into a startup operating step-down circuit group that performs a step-down operation from power-on to supply the internal power supply voltage, and a startup non-operating step-down circuit group that stops operation upon power-on to interrupt supply of the internal power supply voltage. The startup non-operating step-down circuit group includes the multiple step-down circuits sequentially selected from one having a shortest wiring distance from the power-on reset circuit. | 04-08-2010 |
20110025279 | POWER SUPPLY CIRCUIT AND SEMICONDUCTOR DEVICE - A power supply circuit comprises: a first voltage booster circuit that receives a first clock signal having a fixed frequency, and supplies a voltage to a prescribed circuit; and a second voltage booster circuit that receives a second clock signal having a frequency corresponding to an operating frequency of the prescribed circuit, and supplies a voltage to the prescribed circuit. | 02-03-2011 |
20110050186 | VOLTAGE REDUCING CIRCUIT - A voltage reducing circuit includes an internal power supply section configured to reduce an external power supply voltage supplied from an external power supply to an internal power supply voltage which is lower than the external power supply voltage based on a reference voltage. A first current control section is configured to control a current flowing through the internal power supply section when the internal power supply voltage is lower than a setting voltage. A second current control section is configured to control the current flowing through the internal power supply section when the internal power supply voltage exceeds the setting voltage. | 03-03-2011 |
20110317501 | SEMICONDUCTOR DEVICE AND CONTROL METHOD THEREOF - A semiconductor device in accordance with an aspect of the present invention includes first and second power-supply circuits each of which generates an internal power-supply voltage by converting a voltage value of a power-supply voltage into a different voltage value, a first internal circuit that receives a supply of the internal power-supply voltage from the first power-supply circuit through a first line, a second internal circuit that receives a supply of the internal power-supply voltage from the second power-supply circuit through a second line, an inter-block line that connects the first and second lines to each other, and a control circuit that operates the first and second internal circuits in a predetermined operating cycle, and controls a length of a period during which the first and second internal circuits operate simultaneously. | 12-29-2011 |
20120293245 | VOLTAGE REDUCING CIRCUIT - A voltage reducing circuit includes an internal power supply section configured to reduce an external power supply voltage supplied from an external power supply to an internal power supply voltage which is lower than the external power supply voltage based on a reference voltage. A first current control section is configured to control a current flowing through the internal power supply section when the internal power supply voltage is lower than a setting voltage. A second current control section is configured to control the current flowing through the internal power supply section when the internal power supply voltage exceeds the setting voltage. | 11-22-2012 |
20130271209 | SEMICONDUCTOR DEVICE - A semiconductor device in accordance with an aspect of the present invention includes first and second power-supply circuits each of which generates an internal power-supply voltage by converting a voltage value of a power-supply voltage into a different voltage value, a first internal circuit that receives a supply of the internal power-supply voltage from the first power-supply circuit through a first line, a second internal circuit that receives a supply of the internal power-supply voltage from the second power-supply circuit through a second line, an inter-block line that connects the first and second lines to each other, and a control circuit that operates the first and second internal circuits in a predetermined operating cycle, and controls a length of a period during which the first and second internal circuits operate simultaneously. | 10-17-2013 |
20140146590 | SEMICONDUCTOR STORAGE DEVICE - A semiconductor storage device | 05-29-2014 |
20150332752 | SEMICONDUCTOR STORAGE DEVICE - A semiconductor storage device | 11-19-2015 |