Sanyo VPC X 360 E, VPC-X360, VPC-X360EX 4. Power Supply Control, Table 4-4.Host Mode (Battery Operation), Table 4-3.Camera Mode (Battery Operation)

4. Power Supply Control

The 8-bit microprocessor controls the power supply for the overall system.

The following is a description of how the power supply is turned on and off. When the battery is attached, a regulated 3.3 V voltage is normally input to the 8-bit microprocessor (IC301) by IC303, so that clock counting and key scanning is carried out even when the power switch is turned off, so that the camera can start up again. When the battery is removed, the 8-bit microprocessor operates in sleep mode using the backup capacitor. At this time, the 8-bit microprocessor only carries out clock counting, and waits in standby for the battery to be attached again. When a switch is operated, the 8-bit microprocessor supplies power to the system as required.

The 8-bit microprocessor first sets both the P (A) ON signal at pin (70) and the P ON signal at pin (71) to low, and then turns on the DC/DC converter. After this, High signals are output from pin (97) so that the ASIC is set to the active condition. If the LCD monitor is on, the LCD ON signal at pin (95) set to Low, and the DC/DC converter for the LCD monitor is turned on.

		ASIC,	RS232C	CCD	8bit	MODE	LCD
		memory	driver		CPU	LCD	MONITOR
	Power voltage	3.3 V	3.3 V	5 V (A), -7.5 V,	3.2 V	3.2 V	5V (L), 15 V,
				+15 V etc.	(ALWAYS)	(ALWAYS)	+12V etc.
	Lens cover close	OFF	OFF	OFF	32KHz	OFF	OFF
	Power switch ON-	OFF	OFF	OFF	4MHz	ON	OFF
	Auto power down
Lens	Shutter switch ON	ON	ON	ON → OFF	4MHz	ON	OFF
cover
open	Resolution, Flash,	OFF	OFF	OFF	4MHz	ON	OFF
	Self timer switch ON
	LCD finder	ON	ON	ON	4MHz	ON	ON
	Playback	ON	ON	OFF	4MHz	ON	ON
	Table 4-3. Camera Mode (Battery Operation)
		ASIC,	RS232C	CCD	8bit	MODE	LCD
		memory	Driver		CPU	LCD	MONITOR
	Power voltage	3.3 V	3.3 V	5 V (A), -7.5 V,	3.2 V	3.2 V	5 V (L)
				+12 V etc.	(ALWAYS)	(ALWAYS)	+12V etc.
	Lens cover close	OFF	OFF	OFF	32 KHz	OFF	OFF
	Power switch ON-	OFF	OFF	OFF	4 MHz	ON	OFF
	Auto power down
	Take a picture	ON	ON	ON → OFF	4 MHz	ON	OFF
Lens	Erase image	ON	ON	OFF	4 MHz	ON	OFF
cover
open	Download image	ON	ON	OFF	4 MHz	ON	OFF
	Continuous image	ON	ON	ON	4 MHz	ON	OFF
	Message from host	ON	ON	ON	4 MHz	ON	OFF

Note) P. SAVE = Power save mode, 4 MHz = Main clock operation, 32 kHz = Sub clock operation

Table 4-4. Host Mode (Battery Operation)

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