Abstract: An electronic device includes a NAND flash memory device, a memory controller that issues a command for performing either erasing or writing of data to the NAND flash memory device, and a voltage monitor that monitors a power supply and detects a voltage drop. When the voltage drop is detected before an issue of the command, the memory controller ceases the issue of the command to the NAND flash memory device.

Abstract: An electronic device includes a NAND flash memory device, a memory controller that issues a command for performing either erasing or writing of data to the NAND flash memory device, and a voltage monitor that monitors a power supply and detects a voltage drop. When the voltage drop is detected before an issue of the command, the memory controller ceases the issue of the command to the NAND flash memory device.

Abstract: A mobile electronic device comprising an odor sensor and methods of operation are disclosed. An odor is detected using an odor sensor coupled to the mobile electronic device, and a predetermined process is performed if the odor is a predefined odor.

Abstract: A mobile electronic device comprising an odor sensor and methods of operation are disclosed. An odor is detected using an odor sensor coupled to the mobile electronic device, and a predetermined process is performed if the odor is a predefined odor.

Abstract: A wireless communication apparatus includes a DC/DC converter that is operated based on a second clock signal generated by an oscillator with high accuracy when receiving the annunciation signal. Therefore, it is possible to reduce negative influences on other electrical apparatuses due to the conduction noise. The DC/DC converter is operated based on first clock signal generated by an oscillator with low accuracy while in a non-receiving time of the annunciation signal. Therefore, it is possible to reduce negative influence on other electrical apparatuses and to reduce the consumption of electrical power.

Abstract: In order to decrease a negative influence on other electric apparatuses because of conduction noise occurring from a wireless communication apparatus along with preventing increasing cost and an increase in size of communication module, the wireless communication apparatus includes: a high accuracy oscillator which is applied for communication operation of the wireless communication portion, and which generates a predetermined clock signal which becomes a predetermined frequency by dividing at a predetermined division rate; a low accuracy oscillator which has a lower accuracy than the high accuracy oscillator, and which generates a first clock signal close to the predetermined frequency; a frequency divider which divides the operation clock signal at a predetermined division rate, and generates a second clock signal; and a control portion which conducts a switching operation in which the operation clock signal supplied to the power conversion apparatus is switched to the second clock signal when the wireless

Abstract: In a portable telephone which uses a CPU, a memory, a temperature sensor, a D/A converter, and an A/d converter as control elements, and which has an oscillation circuit including a crystal resonator and a variable-capacitance diode, temperature compensation of the output frequency is made by using these existing control elements. The memory is previously stored with control information for correcting an output frequency drift of the portable telephone caused by a temperature change. The temperature of the oscillation circuit is detected with the temperature sensor and converted into a digital value in the A/D converter. The CPU reads control information corresponding to the detected temperature from the memory and applies it to the variable-capacitance diode of the oscillation circuit through the D/A converter, thereby maintaining the output frequency at a constant level.