STV0680-001 Просмотр технического описания (PDF) - Vision

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STV0680-001

Low Cost Digital Camera (LCDC) Chipset

Vision 

STV0680A + VV6444/6410/6500

PRELIMINARY

Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000

• AVI video file creation from image sequences captured in ‘continuous’ mode

Interface type:

PC Operating system:

RS232

Win9x, WinNT4, Win2k

STV680-001

STV0680A-002

Not available

TWAIN

Table 3 : Driver choices

USB

Win98 and Win2k only

TWAIN

TWAIN, VfW

Custom OEM software can be developed by using the SDK (for SDK availability, contact ST), to upload thumbnails/still images or

‘continuous’ images, e.g. for AVI file creation.

1.4.5 Power management features and USB compliance

• Picture retention with extremely low power operation, which appears to the user as if the camera is “switched off”.

• Auto power-off after 30sec with no user activity

• Operates from 6-9V battery, although system voltage is 5V or 3.3V, dependant on sensor.

• Low battery detection

• Dependant on hardware configuration, switch-over to USB power supply is supported, to allow the device to operate with low

batteries or without batteries, when connected to USB.

• Full USB compliance requirements are listed in the USB specification, however, in a camera designed using this chipset, the

following must at least be included: (a) an SDRAM with sufficiently low self-refresh current, (b) USB inrush protection circuitry,

and (c) (in the case of VV6444 only) a switched 5V sensor supply is used, to maintain sufficient supply voltage to the 5V

sensor. See Section 9. for further details.

1.4.6 General features

• High speed picture download over USB

• ST Colour processing algorithms available under license (as part of drivers/SDK)

• USB or RS232 serial interface options, and VfW / TWAIN driver support.

• Customisation of STV0680A is possible to vary the features described in this document, subject to commercial agreement

with ST, see Section 6.

9

STV0680F_contents.fm

CDSTV0680F-C

Commercial in confidence

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