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| preliminary ? low cost digital camera (lcdc) chipset cdstv0680f-c: rev 3.0; mar.2000 this is preliminary information on a new product now in development or undergoing evaluation. details are subject to change wit hout notice. commercial in confidence 1 stv0680a + vv6444/6410/6500 description stmicroelectronics (st), imaging division (formerly vlsi vision ltd.), has utilised its extensive experience in design- ing imaging sensors for the digital still camera market to develop chipsets for modular systems which will provide the core of a highly cost-competitive new standard in consumer digital stills cameras (dsc). the low cost digital camera chipsets from st, incorporat- ing a cmos imaging sensor and stv0680a co-processor (formerly dca1 ) enable camera manufacturers to offer an end product which is genuinely price competitive with tradi- tional point and shoot film-based cameras. the chipset provides the basis of an easy-to-use, user friendly camera, which will be equally adaptable for use by children and adults for stills photography or dual-mode use (i.e. digital stills while untethered, and videoconferencing from the same camera). incorporating a wide range of features, the stv0680a chipset offers exceptional performance at a very competitive price point. sts aim is to enable manufacturers to offer fully functional dsc products to the end consumer for between $50 and $100. an evaluation kit (evk) and reference design manual are available, as well as standard twain and video for windows drivers. alternatively, a software development kit (sdk) allows access to st colour processing algorithms under licence, to develop oem software. the chipset incorporates sts high performance vv6444/ 6410 cif (352 x 288 pixel) or vv6500 vga (640 x 480 pixel) resolution cmos sensors. the complete camera will have 20 picture storage capacity for cif resolution or 80 for qcif resolution, when using 16mbit memory. when using 64mbit memory, it will have 26 picture storage capacity for vga res- olution or 106 for qvga resolution. a standby mode which allows full picture retention at extremely low system power consumption gives a battery life of up to several months. an example upload and colour processing time for a cif image to the pc is 0.3 seconds when the usb interface is used, and the chipset also offers a high frame rate tethered usb video mode (dependant on pc and usb loading). the chipset supports a 2x 7-segment display showing num- ber of pictures remaining, a low battery indicator, and opera- tion mode, as well as a buzzer indicating picture taken, camera full, and self-timer countdown. a cmos solution gives manufacturers inherent benefits, pro- viding a highly integrated compact solution which has a low system cost, is straightforward to implement, and has low power consumption, giving long battery life. key features ? cif (352 x 288) or vga (640 x 480) resolution sensor ? using 64mbit memory, 80 picture storage capacity in camera (cif), 26 (vga), or 320 (qcif). ? using 16mbit memory, 20 picture storage capacity, in camera (cif), or 80 (qcif) ? usb/rs232 interface options ? evaluation kit available ? low power consumption (typically 75ma) for complete camera and low system cost per pixel ? high speed picture upload with usb ? usb tethered video mode gives a qcif resolution videoconferencing camera with vfw support ? continuous mode for capturing image sequences (while untethered) and downloading to avi file format ? memory refresh allows picture retention when camera is in standby mode with very low current consumption ? twain/video for windows driver support ? numeric lcd panel supported ? colour processing and pixel defect detection/correction software available under license as sdk for development of oem software. the license to use the colour algorithm (embedded in the pc driver software) is included in the price of the chipset. product formats chipsets : for manufacturers wishing to design their own cameras st offers chipsets combining the colour cmos sensor with a companion processor. an evaluation kit, including pc demo software, and a comprehensive reference design manual are available, including schematics and bills of materials. modules : for high volume oem companies, lensed camera modules are available to the basic specification outlined, but geared to the customers individual requirements, subject to commercial agreement with st. software driver software is available to support both usb and rs232 interface, included in twain and video for windows drivers (vfw through usb only, win98). an avi creator application allows creation of video files from untethered continuous mode images. st colour processing and defect detection/correction software is supplied under licence agreement, as part of a software development kit (sdk). this runs on the host pc under either windows95 tm or windows98 tm .
preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 2 this version: st vibu internal use only cdstv0680f-ctoc.fm table of contents 1. introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1 digital camera chipset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.2 co-processor choices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.3 sensor choices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 1.4 key system features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4.1 image features (stv0680a-002). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4.2 image features (stv0680-001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4.3 user features on camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4.4 user features on pc software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4.5 power management features and usb compliance . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.4.6 general features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 2. detailed features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1 sensor type and image formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1.1 vv6444 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1.2 vv6410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.1.3 vv6500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.2.1 push buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.2.2 led indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.2.3 picture counter using 2 x 7 segment display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2.4 piezo buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.3 battery level detect and usb auto-switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.4 pc interface options and software support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.4.1 usb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.4.2 rs232 (not available on stv0680-001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.5 anti-flicker exposure and gain control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3. camera modes of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1 standby mode (or usb suspend mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1.1 entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1.2 description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1.3 exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 3.2 snapshot mode (in high or low resolution) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2.1 entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2.2 description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2.3 exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5 3.3 continuous capture mode (in high or low resolution) . . . . . . . . . . . . . . . . . . . . . . . . 15 3.3.1 entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.3.2 description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.3.3 exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5 3.4 self-timer mode (in high or low resolution) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4.1 entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4.2 description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4.3 exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5 3.5 clear camera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.5.1 entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.5.2 description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 3 this version: st vibu internal use only cdstv0680f-ctoc.fm 3.5.3 exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 3.6 change resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 3.6.1 entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.6.2 description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.6.3 exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 3.7 tethered usb video mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.7.1 entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.7.2 description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.7.3 exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 3.8 powering the camera off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.8.1 entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.8.2 description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.8.3 exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7 4. stv0680a hardware interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.1 stv0680a pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.2 sensor interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.3 memory interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 4.3.1 sdram current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.3.2 sdram interface timing requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.3.3 sdram refresh period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.3.4 sdram initialisation period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.4 usb interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 4.5 uart module for rs232 interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.5.1 rs232 physical interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.5.2 uart module overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.6 power management and battery type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.6.1 power switching to usb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.6.2 switched sensor supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.6.3 battery type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.7 quartz crystal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 4.8 numeric lcd interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.8.1 lcd types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 4.8.2 lcd interface pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.9 switches and leds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.9.1 mode push button and shutter push button: gpio0 and gpio1 . . . . . . . . . . . . 21 4.9.2 input to select between 50 and 60hz flicker frequency: gpio3 . . . . . . . . . . . . . . . . 21 4.9.3 led indicator output: gpio5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.9.4 unused pins: gpio2, 4, 6, 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 5. pc software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 5.1 driver support available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.2 demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.3 oem software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.4 software development kit (sdk) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.4.1 general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.4.2 api overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 6. customisation options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 7. detailed chipset specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.1 typical camera specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 4 this version: st vibu internal use only cdstv0680f-ctoc.fm 7.2 stv0680/stv0680a companion processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.3 vv6444 sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 9 7.4 vv6410 and vv6500 sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.5 typical current consumption of complete camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7.5.1 using vv6444 (sensor operates at @ 5v dc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 7.5.2 using vv6410/6500 (sensor operates at @ 3.3v dc) . . . . . . . . . . . . . . . . . . . . . . . 33 8. stv0680a pin descriptions and package information . . . . . . . . . . . . . . . . . . . . . . . 34 8.1 stv0680a pin listing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 8.2 stv0680a pinout diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 8.3 stv0680a package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 9. schematics and example parts list for complete camera design . . . . . . . . . . . . . . 40 9.1 schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 9.2 example parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1 10. vv6444 sensor pinout and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 44 10.1 vv6444 pin listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 10.2 vv6444 pinout diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 10.3 vv6444 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 11. vv6410 pinout information and package dimensions . . . . . . . . . . . . . . . . . . . . . . 50 11.1 vv6410 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 0 11.2 vv6410 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 11.3 vv6410 package details (36pin clcc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 12. vv6500 pinout and pin descriptions (48pin lcc package) . . . . . . . . . . . . . . . . . . 54 12.1 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 12.2 vv6500 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 12.3 vv6500 package details (48 pin lcc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 13. evaluation kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58 14. ordering details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 9 stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 5 this version: st vibu internal use only cdstv0680f-ctoc.fm preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 6 this version: st vibu internal use only stv0680f_contents.fm revision notes the followin g chan g es have been included since revision 2.00. ? removed all schematics and only show example parts list, instead referring to respective reference designs (in section 9.) ? documentation now refers to stv0680a which supercedes stv0680 - see section 1.2 for explanation. ? clarified which stv0680/680a variants and which pc operating systems offer vfw support and rs232 support, offering vfw support - see table 3. ? updated stv0680a pin descriptions (pinout not changed) in section 8. ? confirmed user interface functionality in section 3. and added table 6 to show modes of operation and button functions. ? section 3.: images captured in both high and low resolution can be stored in camera memory at the same time. therefore there is no need for images stored in memory to be cleared before changing image resolution. ? changed ir filter recommendation, see section section 2.1.1. ? added approximate shutter speeds, in ta b l e 1 0 . ? adjusted sensor image array sizes in section 7. to the correct sizes. ? updated ordering information in section 14. ? updated current consumption information of stv0680, stv0680a, vv6444, and complete camera, see section 7.2 and section 7.5. ? added vfw framerates for stv0680a (section 2.1). ? new order number stv0680a-002 stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 7 this version: st vibu internal use only stv0680f_contents.fm 1. introduction 1.1 digital camera chipset this document describes the features and functionality of a cmos chipset, comprising an stmicroelectronics (st) cif or vga resolution sensor and an stv0680a companion processor (formerly known as dca1: digital camera asic 1), as well as outlining what peripheral components are required/supported in order to complete a camera using the chipset. such a camera is particularly suited to dual-mode digital stills or toy applications. in stills mode, the camera stores raw image data in memory. the camera carries out no colour processing, ensuring its simplicit y and low cost. subsequent download of raw data to a pc for processing is done through an rs232 (not stv0680-001) or usb interface, through demo software, a twain driver, or oem custom application. the license to use the colour algorithm (embedded in the pc driver software) is included in the price of the chipset. a video option is provided, when tethered through usb, which can allow for video for windows applications, and video clips ca n be recorded while untethered by continuously capturing images while in continuous mode, then downloaded to the pc for playback, using software to create an avi file. precise design guidelines are available from st as a reference design (see section 9.) a pc software development kit (sdk) is available from st, to interface to the camera and provide the basis for developing a custom software application for stills and /or video, which includes colour processing software. figure 1 : typical camera system block diagram 1.2 co-processor choices the following co-processor choices are available. the stv0680a supercedes stv0680, and uses different silicon and different firmware compared to stv0680. functionally it is exactly the same as stv0680 except that it supports a vfw driver. in addition, a new firmware variant means that the stv0680a also supports vv6410 and vv6500 sensors, as well as 64mbit memory size. the firmware variant of stv0680 denoted by stv0680-001 does not support rs232 interface.: co- processor sensors supported sdram supported usb interface rs232 interface video for windows support stv0680-001 vv6444 16mbit onl y yes no no stv0680a-002 vv6444/6410/6500 16mbit or 64mbit yes yes yes table 1 : product choices cmos sensor: sensor data stv0680a usb interface 16mbit or 64mbit sdram vv6444/6410 rs232 i/f usb i/f memor y i/f rs232 interface gpio sensor i/f pwm led indicator 6-9v batter y e. g ., pp3, ( cif ) vv6500 12mhz xtal audio i/f mini lcd driver 2 x 7 se g . lcd push buttons: buffer amp transceiver ( vga ) low cost lens piezo mode optional optional optional buzzer shutter speaker 3v3 suppl y ( stv0680a ) switched sensor suppl y ( 5v for vv6444, 3v3 for vv6410/6500 ) 4-6 x aa, aaa, etc power mana g ement circuit detect low batter y to pc to pc circuit sensor clock preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 8 this version: st vibu internal use only stv0680f_contents.fm 1.3 sensor choices the following sensors are supported: 1.4 key system features the key features of a typical camera based on the stv0680a chipset are as follows: 1.4.1 image features ( stv0680a-002 ) ? support for 5v or 3.3v cif resolution sensor (vv6444 or vv6410) - 352 x 288 pixels ? support for 3.3v vga resolution sensor (vv6500) - 640 x 480 pixels ? 80 picture storage capacity possible for cif, with 64mb memory ? 26 picture storage capacity for vga, with 64mbit memory ? a greater number of images can be stored when low resolution mode is enabled (e.g. 80 qcif images with 16mbit memory, 106 qvga images with 64mbit memory). see table 4 and table 5. ? automatic anti-flicker exposure and gain control 1.4.2 image features ( stv0680-001 ) ? supports 5v cif resolution sensor (vv6444) - 352 x 288 pixels. ? 20 picture storage capacity possible for cif with 16mb memory. ? 80 picture storage capacity possible for qcif with 16mb memory. ? automatic anti-flicker exposure and gain control 1.4.3 user features on camera ? self-timer mode allows a picture to be captured after several seconds. ? twin 7 segment lcd panel supported - showing number of pictures left, and modes. ? picture counter helps the user to know how much memory is left. ? un-tethered continuous mode allows capture of image sequences for storage in memory and subsequent download to pc. ? piezo buzzer indicates a number of useful events to the user, e.g. whether enough light is present for picture capture, etc. ? indicator led. 1.4.4 user features on pc software pc software allows a number of features, including fast download of thumbnail images for picture selection, and automatic detection and correction of sensor defects. table 3 clarifies the driver compatibility available, including: ? twain driver to suit all twain compatible imaging applications ? video for windows driver for tethered video mode (through usb), available at all resolutions, with fastest framerates at qcif resolution sensor resolution sensor suppl y volta g e vv6444 cif ( 352 x 288 ) 5v vv6410 3.3v vv6500 vga ( 640 x 480 ) table 2 : sensor choices with stv0680/stv0680a stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 9 this version: st vibu internal use only stv0680f_contents.fm ? avi video file creation from image sequences captured in continuous mode 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 circuit ry, 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. interface type: pc operating system: rs232 win9x, winnt4, win2k usb win98 and win2k only stv680-001 not available twain stv0680a-002 twain twain, vfw table 3 : driver choices preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 10 this version: st vibu internal use only stv0680f_contents.fm 2. detailed features 2.1 sensor type and image formats the sensor type is auto-detected by stv0680a, which ensures that the correct sensor timing is enabled, and the correct image resolutions are enabled, as shown in table 4. for stills photography, high or low resolution mode can be selected, to give cif or qcif pictures from a cif sensor, and vg a or qvga from a vga sensor (see table 4 and section 3.7). reduced resolution allows for storage of more images. images captured in both high and low resolution can be stored in camera memory at the same time. therefore there is no need for images stored in memory to be cleared before changing image resolution. where usb is connected, the host pc software (through a video for windows driver) can activate tethered video mode, regardless of the user inputs to the camera buttons. in this case, the image resolution is controlled by the pc driver.. 2.1.1 vv6444 vv6444 is a cif resolution, 5v cmos imaging sensor. a brief specification is shown in section 7. vv6444 has the same functionality and array size as the un-microlensed vv6404 sensor, but has a microlensed array and different colour characteristics. although the vv64444 and vv6404 are electrically identical, the stv0680 and stv0680a use the correct sensor sensor image size resolution mode final image size max. no. of images stored in 16mbit memory max. no. of images stored in 64mbit memory approximate vfw framerate (*) vv6444/ 6410 cif 352 x 288 high cif 352 x 288 20 80 9 frames/sec low qcif 176 x 144 (subsampled) 80 320 (see notes) 25 frames/sec vv6500 vga 640 x 480 high vga 640 x 480 (6) 26 2 frames/sec low qvga 320 x 240 (subsampled) (24) 106 12 frames/sec table 4 : image modes supported ( stv0680a-002 ) *notes : 1. vfw framerate is dependant on pc performance and usb bus loading 2. not all image sizes are supported by all stv0680/680a variants - see table 2 for clarification. 3. a cif camera with stv0680a-002 and 64mbit sdram can store up to 320 images by using qcif mode. where >99 images are still available, the lcd display will remain at 99. where (no. of images available) <99, the lcd display will show the number of images available, as is the case with all other modes. sensor sensor image size resolution mode final image size max. no. of images stored in 16mbit memory vv6444 cif 352 x 288 high cif 352 x 288 20 low qcif 176 x 144 (subsampled) 80 table 5 : image modes supported ( stv0680-001 ) stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 11 this version: st vibu internal use only stv0680f_contents.fm settings for the vv6444 colour set. this means that a vv6404 should not be used with stv0680/680a. for ir filter design, the best choice filter follows the gs0034 dielectric stack filter specification, which is available from st. an alternative, although not optimal filter, would be schott s8612 doped glass, also sold as cm500. 2.1.2 vv6410 vv6410 is a cif resolution, 3.3v cmos imaging sensor. a brief specification is shown in section 7. a dual design to support vv6444 and vv6410 is not possible, since vv6410 is a 3v3 sensor. a dual footprint for vv6410 and vv6500 is not possible since the package types differ, however, the same support circuit is used. see section 9. 2.1.3 vv6500 vv6500 is a vga resolution, 3.3v cmos imaging sensor. a brief specification is shown in section 7. a dual design to support vv6444 and vv6500 is not possible, since vv6500 is a 3v3 sensor. a dual footprint for vv6410 and vv6500 is not possible since the package types differ, however, the same support circuit is used. see section 9. 2.2 user interface the user interface supported by stv0680a comprises of user controls, audible signals and visual displays. 2.2.1 push buttons the following are typical of the type of functions which are supported by the chipset. these functions are achievable with no m ore than 2 push buttons. 1. mode button (wake-up/switch between modes) : this button allows the user (1.1) to wake the camera up from standby mode when the camera is to be used for taking pictures, or (1.2) to switch between modes of operation shown in section 3.. 2. shutter button (shutter/confirm action) : this button allows the user to take a picture or confirm an action, as shown in sec- tion 3. the modes of operation are described in section 3. 2.2.2 led indicator an led display camera status, i.e. to show that the camera is in snapshot mode. 2.2.3 picture counter using 2 x 7 segment display stv0680a stores a picture counter value, which shows how many images can still be captured. stv0680a supports a 2x7 segment lcd panel. in snapshot mode and continuous capture mode, this lcd panel displays the number of pictures still available, which is useful to identify when the user is approaching the maximum number of images which can be stored (see table 4 and table 5). it is possible to clear the images stored in memory, in order to continue taking pictures, as shown in ta ble 6. in other modes, this lcd panel shows displays a 2-character code as shown in table 6, which helps the user to navigate around the modes. note : a cif camera with stv0680a-002 and 64mbit sdram can store up to 320 images by using qcif mode. where >99 images are still available, the lcd display will remain at 99. where (no. of images available) <99, the lcd display will show t he number of images available, as is the case with all other modes. for suitable numeric lcd panel types, see section 4.8. 2.2.4 piezo buzzer an on-chip pulse width modulator (pwm) on stv0680a is used to generate buzzer sounds to signal certain events. the following are typical of the type of events which are indicated by the buzzer, and each has its own distinctive sound: 1. camera has been woken up from standby mode (either by the user pressing a button, by re-connecting the power source, or by connecting a usb/rs232 connection). the precise functionality of the user interface may vary from that of existing demonstration units. the version shown here is close to the actual functionality available in stv0680a. ! note preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 12 this version: st vibu internal use only stv0680f_contents.fm 2. camera has been gone to sleep i.e. moved into standby mode. pictures are retained in memory. 3. picture has been successfully taken after the user presses the capture button. 4. picture has not been taken after the user presses the capture button. this indicates to the user that there is insufficient light, or that the exposure control was not ready due to a rapid change of lighting in the scene. 5. picture has not been taken after the user presses the capture button, due to picture counter having reached the maximum number of images. the user has the chance to zero the counter if desired. 6. end of continuous capture in un-tethered continuous mode, due to memory full. 7. self-timer activated and counting down. 2.3 battery level detect and usb auto-switch an on-chip battery level detector on stv0680a detects when the battery voltage falls below a threshold. this threshold is determined by the designer, dependant on the perception of what remains as acceptable image quality as the battery voltage falls. the chosen threshold level is determined by a resistor value, as shown in section 9. where no usb has been detected, the lcd display flashes, which indicates that the battery is low. where a usb connection has been detected, the camera sources power from usb, if certain additional hardware is fitted. note : it may be a requirement of certain usb compliance tests that such additional hardware is included in the camera design, in order to enable the camera to switch to supply from usb and hence report back to the pc while connected to the usb bus without a battery. 2.4 pc interface options and software support either usb interface (full speed 12mbit/sec max.) or rs232 interface (115.2kbaud) is supported by the chipset, with driver software available from st for both. the interface type is auto-detected by the chipset. pc software can be one of the followin g (exact compatibility is clarified in table 3): 1. simple image upload demonstration software supplied by st, allowing uploading of stills or continuous images. this soft- ware should not be supplied as an end-user product. 2. twain driver to suit all twain compatible imaging applications 3. video for windows driver for tethered video mode (usb only) 4. custom end-user software developed by oem using sdk (for sdk availability, contact st). the sdk is supplied by st as a 32-bit dll format, running on windows 98, and accessed through a documented software interface. this provides the basis for developing a custom software application for uploading stills and/or video. see section 5. for further details. 2.4.1 usb complete images (displayed as either thumbnails or in full resolution), or the entire sdram contents (e.g. for uploading continuously captured image sequences, recorded using continuous capture mode) can be downloaded through usb, and usb connection also allows for tethered video mode to be activated by the usb driver. thumbnail image download is extremely fast for the entire memory contents in the camera. once a picture is selected for download, full image download takes approximately 0.15 seconds per image for a cif image (0.6 seconds for a vga image), plus post processing time per image. for usb interface details, see section 4.4. note : actual usb download and post processing time also depends on pc performance and usb bus loading 2.4.2 rs232 (not available on stv0680-001) thumbnails of images, complete stored images, or the entire sdram contents can be downloaded through rs232, but tethered video is not supported. once a picture is selected for download, full image download takes approximately 10 seconds per image for a cif image (around 30 seconds for a vga image), plus post processing time per image (of the order of 1 second approximately). for rs232 interface details, see section 4.5. note : actual post processing time after rs232 download also depends on pc performance 2.5 anti-flicker exposure and gain control the chipset operates automatic exposure and gain control for either 50hz or 60hz mains-driven indoor lighting, using the same 12mhz crystal. this improves picture quality by selecting a set of exposure values which minimise flicker effects. detection of stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 13 this version: st vibu internal use only stv0680f_contents.fm the mains frequency is dependant on the status of the gpio3 pin, which can be achieved by population of a pcb link at a late stage in production, once the country of destination is known, without the need to change the crystal frequency. the auto exposure and gain algorithm is always enabled during snapshot/self-timer/continuous mode. when the shutter button is pressed in snapshot mode, the chipset captures an image if the exposure and gain value has reached a suitable value for th e current scene. if the light detected has suddenly changed, the camera may emit an audible tone to indicate that more time is required to reach the correct exposure target. in snapshot mode the chipset only captures the image data if sufficient light is present in the image. in continuous capture mode, the chipset captures images regardless of whether enough light is present. note : auto-detect of the mains lighting frequency is not currently supported. preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 14 this version: st vibu internal use only stv0680f_contents.fm 3. camera modes of operation the above modes are interrupted by the detection of a usb or rs232 connection. this is to allow for the possibility that the pc driver takes control of the chipset (e.g. when starting a vfw application through usb). 3.1 standby mode (or usb suspend mode) 3.1.1 entering this mode the camera enters standby mode automatically after 30 seconds of inactivity if not tethered to usb, or when usb suspend mode is activated by the pc driver. 3.1.2 description this allows image data to be stored in memory with extremely low power consumption, which appears to the user as if the camera is switched off, since there is no lcd display or led lit. in vv6444-based designs, stv0680a powers off the sensor completely, in vv6410/6500 based designs, the sensor is placed in suspend mode, and the camera enters a mode where only sdram refresh is carried out. the shutter button is inactive in standby mode. 3.1.3 exiting this mode wake-up from standby mode is achieved by any of the following means: 1. pressing the mode button (only if no usb detected) mode if shutter button pressed while in this mode if mode button pressed while in this mode if no further action lcd displays standby mode no function - pictures cannot be taken in standby mode wakes up camera into snapshot mode remains in standby mode (display is blank) snapshot mode takes one picture, if sufficient light availa- ble, then returns to snapshot mode moves to continuous cap- ture mode stays in snap- shot mode for 30 seconds then moves to standby mode number of pic- tures still avail- able to take continu- ous cap- ture takes a picture every 80ms while button pressed, regardless of light available, then returns to snapshot mode moves to self timer mode returns to snapshot mode after 5 seconds number of pic- tures still avail- able to take self timer takes one picture after a 10 second count- down, if sufficient light available, then returns to snapshot mode moves to clear camera mode st clear camera (1st press:) prompts user to clear camera ( 2nd press: ) clears all ima g es stored in cam- era , then returns to snapshot mode moves to change resolu- tion mode (see note) cl change resolution chan g es resolution (i.e. low to high, or high to low) and returns to snapshot mode returns to snapshot mode if currently in low resolu- tion: hr if currently in high resolu- tion: lr table 6 : camera modes note : in stv0680-001, pressing the mode button while in clear camera mode only moves onto change resolution mode if the camera has no images stored. this is because in stv0680-001, mixed resolutions (i.e. high and low) cannot be stored at the same time. in stv0680a-002, mixed resolutions can be stored at the same time. stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 15 this version: st vibu internal use only stv0680f_contents.fm 2. rs232 receives start bit from host software (only if no usb detected ) 3. usb connection detected 4. if in usb suspend mode, usb driver re-starts communications with the camera as per usb specification 3.2 snapshot mode (in high or low resolution) 3.2.1 entering this mode this is the default mode on wake-up when not tethered to the pc, i.e. pressing the mode button while in standby mode, or powering up the camera. on entering this mode, the current resolution (i.e. hr or lr) is displayed briefly, and there is a brief pause (approx. 1second) during which pictures cannot be taken. this is to allow the auto-exposure and gain control to settle. the lcd then displays the number of pictures still available. 3.2.2 description using the shutter button, snapshot mode allows single pictures to be grabbed using the capture button. the lcd displays the number of pictures still available. auto-exposure and gain are continuously enabled. the camera grabs an image when the capture button is pressed, if sufficient light is available, the exposure and gain algorithm is settled, and picture counter ha s not reached its maximum. image data is stored in memory and picture counter is decremented. 3.2.3 exiting this mode after 30 seconds of non-activity, while not tethered to the pc, the camera goes into standby mode. 3.3 continuous capture mode (in high or low resolution) 3.3.1 entering this mode enabled using the mode button (from snapshot mode, press once). 3.3.2 description the lcd displays ct. auto-exposure and gain are continuously enabled. while the shutter button is pressed, the user can activate continuous capture at approx. 12.5 frames per second, to allow recording of a video sequence, whether or not the camera is tethered to the pc, and regardless of whether enough light is available. the picture counter is decremented once per frame. the continuous image data is stored in memory and can then be downloaded to the pc. once the memory is full, the user is alerted by an audible tone. it is possible to store a mixture of still images and continuous images in memory. 3.3.3 exiting this mode after 5 seconds of non-activity, or after releasing the shutter button, the camera returns to standby mode. 3.4 self-timer mode (in high or low resolution) 3.4.1 entering this mode enabled using the mode button (from snapshot mode, press twice). 3.4.2 description the lcd displays st. auto-exposure and gain are continuously enabled. when the shutter button is pressed, the camera counts down 10 seconds, then grabs an image, if sufficient light available and exposure and gain algorithm settled, and picture counte r has not reached its maximum. image data is stored in memory and picture counter is decremented. 3.4.3 exiting this mode after 5 seconds of non-activity, or after the timer has counted down 10 seconds, the camera returns to standby mode. 3.5 clear camera 3.5.1 entering this mode enabled using the mode button (from snapshot mode, press three times). preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 16 this version: st vibu internal use only stv0680f_contents.fm 3.5.2 description the lcd displays cl. pressing shutter button twice will clear all the images in the camera. 3.5.3 exiting this mode after 5 seconds of non-activity, or after the camera has been cleared, the camera returns to standby mode. 3.6 change resolution 3.6.1 entering this mode this is enabled using the mode button (from snapshot mode, press four times). note : in stv0680-001, the images stored in memory must be cleared before this mode can be entered. this is because in stv0680-001, mixed resolutions (i.e. high and low) cannot be stored at the same time. 3.6.2 description the lcd displays the target resolution to which the camera can be changed, i.e. if in high resolution lr (low resolution) is displayed, if in low resolution, hr (high resolution) is displayed. high resolution stores the full image resolution from t he sensor array, while low subsamples the sensor array, to store 4x the number of images (e.g. 80 in qcif mode, compared to 20 in cif mode). dependant on the type of sensor used, different resolutions are obtained, see table 4 or table 5. by pressing the shutter butto n, user changes the resolution. 3.6.3 exiting this mode after 5 seconds of non-activity, or after the resolution has been changed, the camera returns to standby mode. 3.7 tethered usb video mode 3.7.1 entering this mode this is activated by the pc video for windows driver while the camera is tethered, dependant on whether vfw is supported (see table 3). 3.7.2 description the camera is controlled by the pc driver. note : any images or continuous image sequences contained in the camera are lost when the video for windows driver starts. 3.7.3 exiting this mode this is controlled by the pc drivers. 3.8 powering the camera off 3.8.1 entering this mode this is not truly a mode of operation, but a description of what happens if: ? the battery power and usb connection are removed from the camera ? the battery power is removed, and the pc to which the camera is tethered, is switched off. ? the battery voltage falls extremely low. ways of avoiding this situation are discussed in the reference design, see section 9. note : normally a camera with usb interface should source power from the usb connection, but this is hardware dependant, see section 9. 3.8.2 description in this situation, all image data is lost. note : under certain circumstances, the image data may be maintained if the camera or pc is powered on again after a few stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 17 this version: st vibu internal use only stv0680f_contents.fm seconds, although this is not guaranteed). 3.8.3 exiting this mode when the camera is powered on again, either when the battery is re-fitted, or the usb is re-connected, or the pc is re-started, the camera will power up into standby mode, high resolution, with all images available. preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 18 this version: st vibu internal use only stv0680f_contents.fm 4. stv0680a hardware interfaces 4.1 stv0680a pinout the stv0680a pinout has been carefully developed to minimise the physical size of the support printed circuit board by facilitating placement of and electrical routing to peripheral support components such as the sdram. the complete pinout and listing is shown in section 8. 4.2 sensor interface stv0680a uses a standard st digital interface from the sensor, and the sensor clock input is provided by an output from stv0680a. designing a camera using this chipset should design as close as possible to the reference design (section 9.), in which case the chipset can be regarded as a functional black box, and no further details regarding the stv0680a-sensor interface are required. 4.3 memory interface stv0680a is designed to interface to an external 16mbit or 64mbit sdram (see table 4 and table 5). the sdram device must have a 16 bit wide data bus and operate from a 3.3v supply. two sizes of sdram memory are supported by stv0680a, 16mbits (1m x 16 bits wide) or 64mbits (4m x 16 bits wide), the memory size is auto-detected by stv0680a. stv0680a clocks the sdram at 6mhz, typically this is well below the figures offered by most manufacturers devices. devices which are pc66 and/or pc100 compliant are preferred. for interface wiring, see section 9. 4.3.1 sdram current consumption for maximum system battery life while no pictures are being taken, and to assist in meeting requirements for usb compliance, an sdram should be chosen with the lowest possible self refresh current specification. for suggested sdram part numbers, see section 9. 4.3.2 sdram interface timing requirements the following timing diagrams should be referred to when selecting sdram other than those recommended in section 9. dclk command dqm a0-9,ba a10 active read nop precharge nop row column row dout m dout m + 1 dout m + 2 dout m + 3 dq read latenc y t ck t rcd t rc cke t ras dq sample dq sample dq sample dq sample t rp t cms t cmh t as t ah t l t h t cms t cmh t ac t oh stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 19 this version: st vibu internal use only stv0680f_contents.fm figure 2 : sdram read timing (16mbit device, burst read) figure 3 : sdram write timing (16mbit device, burst write) table 7 : timing parameters for sdram read/write 4.3.3 sdram refresh period the sdram refresh period from stv0680a is guaranteed to be no greater than 15.6 m s during snapshot/self-timer/continuous/ tethered video modes of operation (i.e. not standby mode). in standby mode, the sdram is set to self-refresh, therefore no s y mbol min max units s y mbol min max units t ck 166.45 166.89 ns t ds 81.01 ns t ch ?t ck t dh 83.41 ns t cl ?t ck t rcd 1t ck t ac ?t ck t ras 55t ck t oh 0nst rc 7t ck t cms 82.88 ns t rp 2t ck t cmh 82.85 ns t rcd 1t ck t as 82.88 ns t ah 82.76 ns dclk command dqm a0-9,ba a10 active write nop precharge nop row column row din m din m + 1 din m + 2 din m + 3 dq t ck t rcd t rc cke t ras t rp t cms t cmh t as t ah t l t h t cms t cmh t ds t dh preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 20 this version: st vibu internal use only stv0680f_contents.fm refresh from stv0680a takes place. 4.3.4 sdram initialisation period the sdram initialisation period is currently set to 981 m s in stv0680a. 4.4 usb interface stv0680a includes a usb version 1.1 compliant universal serial bus interface, including a transceiver. this allows direct connection from stv0680a to a usb connector with minimal additional hardware (i.e. a small number of passive discretes) - see section 9. the usb interface interfaces the stv0680a to the usb at full speed 12mhz data rate. some of the features are: ? compliant with usb protocol revision 1.1. ? usb protocol handling. ? usb device state handling. ? clock and data recovery from usb. ? bit stripping and bit stuffing functions. ? crc5 checking, crc16 generation and checking. ? serial to parallel conversion. ? single bulk end point. usb drivers are supplied by st. for usb timing information, please refer to the usb specification v1.1. 4.5 uart module for rs232 interface the uart module on stv0680a provides a 115200 baud full duplex interface to an external host. 4.5.1 rs232 physical interface stv0680a does not support direct connection to a serial link. physical line driver circuitry is required, e.g. using a standard rs232 transceiver chip, or by using a small number of low cost discretes (as shown in section 9.). the schematics shown assume a 3 core cable with a length of no greater than 2m. unscreened cable can be used, a suitable low cost connector is a 3.5mm audio jack plugs/sockets. 4.5.2 uart module overview receiving data the uart module in stv0680a receives serial data through the rxd pin. data reception is initiated by a 1-to-0 transition on rxd, and the received data is sampled every 8.66 m s. if the rxd input is not 0 when the incoming data is first sampled, the uart module goes back to look for another 1-to-0 transition. this is to provide rejection of false start bits. if the start bit proves valid, reception of the rest of the frame will proceed. transmittin g data when a transmission is activated by stv0680a, the contents of an internal transmit shift register are shifted onto the txd pin, every 8.66 m s. the uart operates at 12mhz, which is not an integer multiple of 115200, so the actual baud rate is 115232 +/- 0.3%, which is well within the requirements of a typical 16x oversampling uart, which can tolerate a 3.75% error in baud rate. 4.6 power management and battery type stv0680a and the sdram require a 3.3v supply. where a vv6410 or vv6500 (3.3v) sensor is used, a single voltage regulator can be used to regulate the supply for all three components from the battery, or the sensor on-board vreg can be used. where a vv6444 is used, the sensor requires a 5v supply, hence a dc-dc converter is recommended to provide enough voltage when the camera is powered from the usb bus. these are explained more fully in the reference design. stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 21 this version: st vibu internal use only stv0680f_contents.fm 4.6.1 power switching to usb included in the usb compliance requirements, is the ability of the camera to report to the pc when connected to the usb bus, whether or not there is a fresh battery in the camera. this means that power sourcing from usb is required, which also saves on battery life while the camera is used in usb tethered video mode. in order to allow switching from battery to usb power, some additional hardware is required (see also section 9.): ? the usbdetect input to stv0680a is used to detect that a usb power supply is connected ? if the usb is detected, additional hardware is used to switch off the battery ? an inrush protection circuit can protect the usb bus from current draw in the case of a low battery/battery not fitted. this m ay be necessary to comply with the usb specification. ? for precise usb compliance requirements, please consult the usb specification version 1.1 4.6.2 switched sensor supply dependant on the hardware implementation, the senspwr output from stv0680a can be used to power off completely the sensor during standby mode (in the case of vv6444) or put the sensor into suspend mode (in the case of vv6410/6500). this has a significant improvement on battery life. 4.6.3 battery type this is hardware dependant. the schematics referred to in section 9. assume either three or four 1.5v cells. 4.7 quartz crystal regardless of the sensor type or anti-flicker requirements, the sensor + stv0680a chipset operates from a single 12mhz fundamental quartz crystal. for specification requirements, see table 15. stv0680a includes an on-chip low jitter pll, for pll characteristics, see table 14. 4.8 numeric lcd interface stv0680a supports a 2-digit lcd panel only, for alpha-numeric display. 4.8.1 lcd types stv0680a connects to a non multiplexed, direct drive lcd with 2 x 7 segments. many lcd types are compatible with this interface. the lcd refresh fre q uenc y is 34.7hz . 4.8.2 lcd interface pinout '0' connects to segment 'a', '1' connects to segment 'b', and so on, where a to g are standard for all 7-segment displays, as w ell as an lcd common output, giving fifteen si g nals in total. 4.9 switches and leds the gpio lines on stv0680a have pre-defined functions as follows, see section 2.2 for user interface functionality, and section 9. for precise hardware implementation. 4.9.1 mode push button and shutter push button: gpio0 and gpio1 both push button inputs have internal de-bounce circuits, reducing the amount of hardware required externally. it is recommended that labelling is used on the camera casing to help the user understand the functioning of the 2-button interface. 4.9.2 input to select between 50 and 60hz flicker frequency: gpio3 this allows for factory setting of the anti-flicker frequency, dependant on the final country of destination. see also section 2.5. the polarity of this selection is detailed in the reference design (see section 9.). the precise functionality of early demonstration units may vary from the actual user interface supported by stv0680a. ! note preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 22 this version: st vibu internal use only stv0680f_contents.fm 4.9.3 led indicator output: gpio5 the led output has an 8ma current sinking capability. 4.9.4 unused pins: gpio2, 4, 6, 7 these should be tied to gnd. stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 23 this version: st vibu internal use only stv0680f_contents.fm 5. pc software 5.1 driver support available 5.2 demonstration software the followin g is supplied with evaluation kits/demonstration units ( this software is mainl y for demonstration purposes and should not be supplied as an end-user product. ) : 1. simple demonstration software for uploadin g thumbnails and ima g es. 2. video demonstration application for stv0680-001 tethered video mode throu g h usb ( win 98 onl y) ( not vfw compati- ble ) . this is not re q uired for stv0680a, which can be used with standard vfw drivers. 3. avi creator software for uploadin g continuous ima g es for creatin g movie clips. 5.3 oem software oems have the followin g options for productisation of a camera based on the chipset: 1. twain driver for uploadin g ima g es, this would allow the camera to be bundled with standard twain compatible ima g in g software. 2. video for windows driver for tethered video mode throu g h usb ( win 98 & win2k onl y) . this would allow the camera to be bundled with standard video for windows software. 3. development of custom end-user software, includin g the st colour process, developed under license usin g the sdk. 5.4 software development kit (sdk) 5.4.1 general a software development kit is supplied by st under license agreement, which allows the oem to develop a custom application which can perform picture download, thumbnail display, and colour processing. this supports windows95 tm (serial interface only) or windows98/win2k tm (serial or usb), and includes features such as: ? very fast download (through usb) and colour display of image thumbnails for picture selection ? download of full image once selected by user software ? colour processing of full image, using the st colour process ? automatic detection and correction of sensor defects the sdk is supplied by st as a 32-bit dll format, running on windows 98/win2k tm , and accessed through a documented software interface. this provides the basis for developing a custom software application for stills and/or video. the st sdk for the chipset comprises the following: ? interface library containing all application programmers interface (api) functions. provided as c library and header files. ? all driver files necessary for chosen communications link (supplied as dll and sys files). ? documentation of all api functions including example code fragments. all software is built as 32-bit modules for windows 98/win2k. the serial communications link is also supported for windows 95. a development environment of microsoft visual c++ v5 or higher is assumed. interface type: pc operating system: rs232 win9x, winnt4, win2k usb win98 and win2k only stv680-001 not available twain stv0680a-002 twain twain, vfw table 8 : driver choices with stv0680, a simple video.exe application is provided. whilst not bein g a vfw application, it g ives sufficient framerate to allow for camera test, lens focussin g , etc. ! note preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 24 this version: st vibu internal use only stv0680f_contents.fm 5.4.2 api overview all oem application software communicates with the camera by means of the api as illustrated in figure 4. figure 4 : software interface the user application, api and drivers all run on the host pc. the drivers communicate with the camera by the chosen communications link (either serial or usb). the core api functions allow for: ? the camera to be opened and closed as a device under the operating system ? query of camera information and configuration (e.g., the number of pictures taken, current mode setting) ? uploading of images and thumbnail images ? control of camera functions (e.g., taking a picture or resetting the image counter). both single-threaded and multi-threaded programming models are supported and the camera may be accessed using either synchronous (i.e., blocking) or asynchronous (i.e., non-blocking or overlapped) communications. where asynchronous communications are used, the application developer is responsible for coordinating tasks and access to the camera. user application api drivers camera module stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 25 this version: st vibu internal use only stv0680f_contents.fm 6. customisation options the feature set of the stv0680a chipset encompasses the vast majority of digital stills and toy camera applications. however, subject to commercial agreement for high volume applications, the configuration of stv0680a could be modified by st to allow a new chipset to be produced. please contact st for details. prelim i nary d i g i tal camer a chipset; customer datasheet, rev 3 . 0, m ar c h 20 0 0 stv0 6 80a + vv 6 44 4 /64 1 0/6 5 00 cdstv0680f-c co m m e rcia l in c onfi d en c e 26 this version: st vibu internal use only st v 06 8 0f _ co n te n ts . fm 7. detailed chipset specificat i ons 7 . 1 t y pical cam e r a s pecifi c ations th e f o ll o win g d a ta a ssumes th a t t h e camer a has b e e n bu i lt a ccor d in g t o ref e rence d esig n show n i n sectio n 9. 7 . 2 stv0680/stv0680a companion p r ocessor su p ply v o l t a g e: 6-9 v (whe n p o w ere d fr o m b att e r y) o r 5v (wh e n p o w er e d f r om usb). (* s e e no t e 1 . ) ope r a ti n g t e mpe r a tur e r a n g e 0 o c - 40 o c e x a m p l e l e ns h o r i z o n t a l f o v 4 4 o (* se e no t e 2 ) max. rs2 3 2 ca b l e l en g th su p po r t e d 2 m cif o u t p ut 35 2 x 28 8 p i x e l s qcif o u t p ut 17 6 x 14 4 p i x e ls v ga o u tpu t (usi n g vv 6 50 0 ) 64 0 x 48 0 p i x els q v ga ou t pu t (u s in g vv6 5 00) 32 0 x 24 0 p i x e ls ima g e u pl o a d f o r m a t r a w b a y er p c d r i v er o ut p ut f o r mat co l ou r rgb b itmap t a b l e 9 : t y p i c a l c a m e r a s pe c i f i c a t i ons notes : 1 . d u a l usb o r b a t t e r y pow e r s u p p l y is o n l y p o s s i b l e w h e n t h e r e q u i red pow e r s w i t c h i n g h a rdw a re i s i n c l u d e d , as s h o wn in se c ti o n 9. 2 . fi g u re s a re a ppr o x i m a te a nd d e p en d o n a c tua l c o mpo n en t s s o u rce d . sensor min max vv6 4 44 8 . 1 8 m s 3 9 m s vv6 4 10 8.6 7 m s 4 4 m s vv6 5 00 7.9 4 m s 6 6 m s t a b l e 1 0 : ap p r o x i ma t e s hut t e r s p e e ds p a r a met e r min t y p max u n its sup p ly v o l tage 3.0 3.3 3 .6 v curr e nt co n sump t io n (n o r ma l o p e r a t io n ) 2 0 t bd ma st a nd b y curr e nt co n sump t io n (u n tet h ere d stan d b y m o d e o r pc s u s p en d m o d e ) 0 . 3 5 tbd ma op e r a ti n g t e mp e r atu r e r a n g e 0 70 o c p a c ka g e 1 00qfp exp o sur e cont r ol 1 00 0 0 0 0:1 t a b l e 11 : stv06 8 0/stv6 8 0a spec i fi c ations stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 27 this version: st vibu internal use only stv0680f_contents.fm table 12 : stv0680/stv0680a absolute maximum ratings table 13 : stv0680/stv0680a dc characteristics notes on table 13 : 1. v di = |(d+) - (d-)| 2. v cm includes v di range. 3. tf rfm =( tf r / tf f ). 4. z drv includes an external resistor of 20 ohms serial to this transceiver. description range unit storage temperature (approximate) 50 to 150 o c parameter description min typ max units note s vdd power supply 3.0 3.3 3.6 v v ilu usb differential pad d+/d- input low 0.8 v v ihu usb differential pad d+/d- input high (driven) 2.0 v v ihuz usb differential pad d+/d- input high (floating) 2.7 3.6 v v di usb differential pad d+/d- input sensitivity 0.2 v 1 v cm usb differential pad d+/d- common mode voltage 0.8 2.5 v 2 v olu usb differential pad d+/d- output low voltage 0.0 0.3 v v ohu usb differential pad d+/d- output high voltage 2.8 3.6 v v ohu usb differential pad d+/d- output high voltage 2.8 3.6 v v crs usb differential pad d+/d- output signal cross over voltage 1.3 2.0 v r pu usb differential pad d+/d- pullup resistor 1.425 1.575 k w r pd usb differential pad d+/d- pulldown resistor 14.25 15.75 k w tf r rise time 4 20 ns tf f fall time 4 20 ns tf rfm differential rise time and fall time matching 90 111.11 % 3 z drv driver output resistance 28 44 ohms 4 parameter symbol min typ max unit condition peak to peak jitters -- -- 170 220 ps @vcofreq = 100mhz ~ 200mhz duty cycle -- 40 50 60 % operating voltage range vdd 3 3.3 3.6 v input low voltage vil - 0.8 v vdd=3.3v input high voltage vih 0.7vdd vdd v vdd=3.3v pull_in time + locking time tready -- -- 0.5 ms preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 28 this version: st vibu internal use only stv0680f_contents.fm table 14 : stv0680/stv0680a pll characteristics output slew rate [ tsr(fout) -- 0.100+0.1082*cl -- ns cl:output load(pf) parameter min typ max units crystal specification 50/50/10/30 (12mhz fundamental) crystal frequency 12.000 mhz frequency tolerance 50 ppm temperature stability 50 ppm operating temperature -10 deg. c load capacitance 30 pf table 15 : stv0680/stv0680a crystal tolerance stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 29 this version: st vibu internal use only stv0680f_contents.fm 7.3 vv6444 sensor 7.4 vv6410 and vv6500 sensors colour image format 352 x 288 pixels (cif) pixel size 12.0 x 11.0 m m image array size 4.272mm x 3.212mm array format cif sensor signal / noise ratio approx. 48db (* see note 1) supply voltage 5.0v dc +/-5% package type 48lcc operating temp. range 0 o c - 40 o c current consumption min typ max units snapshot/self-timer/continuous/tethered video modes of operation 30 tbd ma standby/pc suspend mode, sensor pow- ered off (see note 2) negligible tbd m a standby/pc suspend mode, sensor pow- ered on (see note 3) approx. 300 tbd m a table 16 : vv6444 specifications * notes : 1. 48db refers to vv6404. with the addition of microlenses on vv6444, an increase in sensitivity can be expected. 2. where the sensor is completely powered off by a fet or switcher (external hardware) during the standby/pc suspend mode. 3. where the fet/switcher is not implemented, and the sensor is powered throughout standby/pc suspend mode, however the sensor clock is disabled. parameter min. max. notes v il -0.5v 0.3 x v dd guaranteed input low voltage v ih 0.7 x v dd v dd + 0.5v guaranteed input high voltage v ol 0.4v at max i ol for pad type v oh 2.4v v dd - 0.5v ioh = 100 m a at max i oh for pad type t j junction temp 0 deg c 100 deg c internal pullup resistor 35k w 150k w internal pulldown resistor 35k w 150k w table 17 : vv6444 dc characteristics colour image format 352 x 288 pixels (cif) pixel size 7.5 x 6.9 m m table 18 : vv6410 specifications preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 30 this version: st vibu internal use only stv0680f_contents.fm note s: 1. assuming appropriate external hardware recommendations are implemented (see section 9.), the sensor suspend pin is asserted during standby mode/pc suspend mode. hence the sensor is placed in sensor suspend mode by means of (a) a serial interface message and (b) the suspend pin being asserted. 2. where the external hardware does not permit the sensor suspend pin to be asserted during standby mode/pc suspend mode, the sensor is placed in sensor suspend mode by means of a serial interface message only. this increases current consumption due to a pull-up on the suspend pin. note s: 1. assuming appropriate external hardware recommendations are implemented (see section 9.), the sensor suspend pin is image array size 2.67mm x 2.04mm array format cif sensor signal / noise ratio approx. 57db package type 36lcc supply voltage 3.3v dc +/-5% operating temp. range 0 o c - 40 o c current consumption: min typ max units snapshot/self-timer/continuous/tethered video modes of operation 25 tbd ma standby mode/pc suspend mode, sus- pend pin asserted (see note 1) <100 tbd m a standby mode/pc suspend mode, sus- pend pin not asserted (see note 2) <300 tbd m a colour image format 640 x 480 pixels (vga) pixel size 7.5 x 7.5 m m image array size 4.89mm x 3.66mm array format vga sensor signal / noise ratio approx. 57db supply voltage 3.3v dc +/-5% package type 48lcc operating temp. range 0 o c - 40 o c current consumption: min typ max units snapshot/self-timer/continuous/tethered video modes of operation 30 tbd ma standby mode/pc suspend mode, sus- pend pin asserted (see note 1) <100 tbd m a standby mode/pc suspend mode, sus- pend pin not asserted (see note 2) <300 tbd m a table 19 : vv6500 specifications table 18 : vv6410 specifications stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 31 this version: st vibu internal use only stv0680f_contents.fm asserted during standby mode/pc suspend mode. hence the sensor is placed in sensor suspend mode by means of (a) a serial interface message and (b) the suspend pin being asserted. 2. where the external hardware does not permit the sensor suspend pin to be asserted during standby mode/pc suspend mode, the sensor is placed in sensor suspend mode by means of a serial interface message only. this increases current consumption due to a pull-up on the suspend pin. 7.5 typical current consumption of complete camera the following data assumes that the camera has been built according to reference design referred to in section 9. figures are approximate and depend on actual components sourced - see notes. parameter min. max. notes v il -0.5v 0.3 x v dd guaranteed input low voltage v ih 0.7 x v dd v dd + 0.5v guaranteed input high voltage v ol 0.4v at max i ol for pad type v oh 2.4v v dd - 0.5v ioh = 100 m a at max i oh for pad type t j junction temp 0 deg c 100 deg c standard pullup (sda, scl) 35 m a current draw 52 m a current draw standard pulldown (oeb) 25 m a current draw 42 m a current draw non-standard pullup (resetb) 66 m a current draw 250 m a current draw table 20 : vv6410/6500 dc characteristics preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 32 this version: st vibu internal use only stv0680f_contents.fm 7.5.1 using vv6444 (sensor operates at @ 5v dc) notes : 1. see table 11 on page 26. 2. from limited evaluation, typical self-refresh current figures of certain sdram chips are well below manufacturers maximum specification, e.g. 100-250 m a. see section 9. for recommendations. 3. this is assuming a low quiescent current 3v3 vreg is used, and assuming that the sensor is switched off using external cir- cuitry. mode typical current cons. comments snapshot/continuous/ self timer mode (while un-tethered) 80ma snapshot/continuous/ self timer mode (while tethered to pc) 80ma assuming appropriate hardware included, power is sourced from pc while usb connected. camera standby mode (when not connected to usb) approx. 0.4ma + sdram self-refresh current (see note 2) total current in this mode equals : stv0680/680a standby current consumption (see note 1) + sdram self-refresh current (see note 2) + peripheral circuitry (approx. 50 m a, see note 3). suspend mode (when connected to usb) approx. 0.6ma + sdram self-refresh current (see note 2) total current in this mode equals : stv0680/680a standby current consumption (see note 1) + sdram self-refresh current (see note 2) + peripheral circuitry (approx. 50 m a, see note 3). + 200 m a , based on 1.5k pull-up in camera (see section 9.) and 15k pull-down in pc. table 21 : current consumption, complete stv0680a+vv6444 camera stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 33 this version: st vibu internal use only stv0680f_contents.fm 7.5.2 using vv6410/6500 (sensor operates at @ 3.3v dc) notes : 1. see table 11 on page page 26. however, stv0680a mean current consumption is to be determined by measurement of sample quantity in due course. 2. from limited evaluation, typical self-refresh current figures of certain sdram chips are well below manufacturers maximum specification, e.g. 100-250 m a. see section 9. for recommendations. 3. sensor suspend mode current <100 m a when suspend pin asserted, see table 18 and table 19. 4. if the appropriate hardware to assert the sensor suspend pin is not fitted, an addditional current consumption in this mode of up to 200 m a can be expected. mode typical comments snapshot/continuous/ self timer mode (while un-tethered) 60ma assuming appropriate hardware included, power is sourced from pc while usb connected. snapshot/continuous/ self timer mode (while tethered to pc) 60ma standby mode (when not connected to usb): sensor suspend pin asserted (see note 4) approx. 0.5ma + sdram self- refresh current (see note 2) total current in this mode equals : stv0680a standby current consumption (see note 1) + sdram self-refresh current (see note 2) + peripheral circuitry (approx. 50 m a). + sensor suspend mode current (see note 3) pc suspend mode (when connected to usb): sensor suspend pin asserted (see note 4) approx. 0.7ma + sdram self- refresh current (see note 2) total current in this mode equals : stv0680a standby current consumption (see note 1) +sdram self-refresh current (see note 2) + peripheral circuitry (approx. 50 m a). + 200 m a , based on 1.5k pull-up in camera (see section 9.) and 15k pull-down in pc. + sensor suspend mode current (see note 3) table 22 : current consumption, complete stv0680a+vv6410/6500 camera preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 34 this version: st vibu internal use only stv0680f_contents.fm 8. stv0680a pin descriptions and package information 8.1 stv0680a pin listing pin no. signal type description drive sensor interface 69 senspwr output, active high power-up sensor 2ma (sl) 68 sensrst output, active low reset sensor 2ma (sl) 60 scl input/output (od,t) sensor serial interface 4ma (sl) 61 sda input/output (od,t) sensor serial interface 4ma (sl) 62 sd3 input (s,t) sensor data 63 sd2 input (s,t) sensor data 64 sd1 input (s,t) sensor data 65 sd0 input (s,t) sensor data 66 qclk input (s,t) qualification clock from sensor 67 sclko output clock output to sensor 4ma gpio (see note) 77 gpio0 (mode ) debounced input push button (wake-up/mode) 8ma (sl) 76 gpio1 (shutter ) debounced input push button (shutter/confirm) 8ma (sl) 75 gpio2 io (od) not used (tie to gnd with 0r link) 8ma (sl) 74 gpio3 (50/60) debounced input link to select between 50hz and 60hz lighting 8ma (sl) 73 gpio4 io (od) not used (tie to gnd with 0r link) 8ma (sl) 72 gpio5 output (od) led indicator 8ma (sl) 71 gpio6 io (od) not used (tie to gnd with 0r link) 8ma (sl) 70 gpio7 io (od) not used (tie to gnd with 0r link) 8ma (sl) usb interface 42 usbdetect input (s) detect power source from usb. (for camera with rs232 only, this pin should be tied to gnd) usb speci- fication v1.1 com- pliant i/o 43 data+ input/output usb bus (for camera with rs232 only, this pin should be connected to test points to allow for usb production test (lens focussing)) 44 data- input/output usb bus. (for camera with rs232 only, this pin should be connected to test points to allow for usb production test (lens focussing)) rs232 interface 58 txd output serial data transmit (for camera with usb only, this pin should be tied to rxd) 4ma (sl) 59 rxd input (s) serial data receive (for camera with usb only, this pin should be tied to txd) stv0680a master clocks and reset 48 xin input quartz crystal in 49 xout output quartz crystal out stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 35 this version: st vibu internal use only stv0680f_contents.fm 51 reset input (s) active (low) stv0680a reset system memory (sdram) interface 20 dqmu output data input/output mask for dram_dq[15:8] 2ma (sl) 22 dclk output clock: all sdram input signals are sampled on the positive edge 4ma 24 cke output clock enable: activates (high) and deactivates (low) the sdram clk signal 2ma (sl) 28 ad11 output sdram address a11 for 64m sdram or ba for 16m sdram 2ma (sl) 31 ad9 output sdram address a9 2ma (sl) 33 ad8 output sdram address a8 2ma (sl) 35 ad7 output sdram address a7 2ma (sl) 37 ad6 output sdram address a6 2ma (sl) 39 ad5 output sdram address a5 2ma (sl) 41 ad4 output sdram address a4 2ma (sl) 40 ad3 output sdram address a3 2ma (sl) 38 ad2 output sdram address a2 2ma (sl) 36 ad1 output sdram address a1 2ma (sl) 34 ad0 output sdram address a0 2ma (sl) 32 ad10 output sdram address a10 2ma (sl) 26 ad12 output sdram address a12, ba0 for 64m sdram, unused on 16m 2ma (sl) 30 ad13 output sdram address a13, ba1 for 64m sdram, unused on 16m 2ma (sl) 25 cs output, active low chip select: enables (registered low) and disables (regis- tered high) the sdram command decoder. 2ma (sl) 23 ras output, active low sdram row address strobe command 2ma (sl) 21 cas output, active low sdram column address strobe command 2ma (sl) 19 we output, active low sdram write enable command 2ma (sl) 18 dqml output data input/output mask for dram_dq[7:0] 2ma (sl) 16 dq7 input/output sdram data bus 2ma (sl) 14 dq6 input/output sdram data bus 2ma (sl) 12 dq5 input/output sdram data bus 2ma (sl) 10 dq4 input/output sdram data bus 2ma (sl) 8 dq3 input/output sdram data bus 2ma (sl) 6 dq2 input/output sdram data bus 2ma (sl) 4 dq1 input/output sdram data bus 2ma (sl) 100 dq0 input/output sdram data bus 2ma (sl) 2 dq15 input/output sdram data bus 2ma (sl) 5 dq14 input/output sdram data bus 2ma (sl) 7 dq13 input/output sdram data bus 2ma (sl) pin no. signal type description drive preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 36 this version: st vibu internal use only stv0680f_contents.fm 9 dq12 input/output sdram data bus 2ma (sl) 11 dq11 input/output sdram data bus 2ma (sl) 13 dq10 input/output sdram data bus 2ma (sl) 15 dq9 input/output sdram data bus 2ma (sl) 17 dq8 input/output sdram data bus 2ma (sl) lcd interface 85 lcdcom output lcd common 2ma (sl) 93 lcd1_6 output lcd digit 1 segment g 2ma (sl) 94 lcd1_5 output lcd digit 1 segment f 2ma (sl) 95 lcd1_4 output lcd digit 1 segment e 2ma (sl) 96 lcd1_3 output lcd digit 1 segment d 2ma (sl) 97 lcd1_2 output lcd digit 1 segment c 2ma (sl) 98 lcd1_1 output lcd digit 1 segment b 2ma (sl) 99 lcd1_0 output lcd digit 1 segment a 2ma (sl) 86 lcd2_6 output lcd digit 2 segment g 2ma (sl) 87 lcd2_5 output lcd digit 2 segment f 2ma (sl) 88 lcd2_4 output lcd digit 2segment e 2ma (sl) 89 lcd2_3 output lcd digit 2segment d 2ma (sl) 90 lcd2_2 output lcd digit 2segment c 2ma (sl) 91 lcd2_1 output lcd digit 2 segment b 2ma (sl) 92 lcd2_0 output lcd digit 2 segment a 2ma (sl) piezo interface 84 piezo output direct connection to piezo buzzer 8ma (sl) battery level comparator interface 80 lo_bat input (a) battery level comparator input. the voltage on low_bat is compared to the reference to determine the battery status 79 lo_bat_ref input (a) 1.22v battery level comparator reference input power and ground 1, 27, 50, 56, 78 dvss[1-5] power pin digital ground 3, 29, 57, 83 dvdd[1-4] power pin digital power 52 pllgvdd power pin pll guard power 53 pllgvss power pin pll guard ground 54 pllavdd power pin pll analog power 55 pllavss power pin pll analog ground non-user pins 45 test0 input non-user pin - connect to 3v3 46 test1 input non-user pin - connect to 3v3 pin no. signal type description drive preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 37 this version: st vibu internal use only stv0680f_contents.fm table 23 : stv0680a pin listing key : ? sl - slew rate limited output ? od - open drain output ? s - schmitt input ? a - analog input/output ? t - 5v tolerant pad (these pads do not have diode protection) where the i/o pad type is not explicitly defined in the above notes, assume cmos. note : gpio are not general purpose, in the sense that their function is predetermined (e.g. gpio0 = mode , gpio2 is unused), dependant on the variant number of stv0680/stv0680a, denoted by the suffix on the part number -00x. 47 test2 input non-user pin - connect to 3v3 81 dacres non-user pin i(a) see example schematic in section 9. dac bias amplifier reference input 82 dacout non-user pin o (a) see example schematic in section 9. 8-bit dac current source output 0-10ma (2) pin no. signal type description drive preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 38 this version: st vibu internal use only stv0680f_contents.fm 8.2 stv0680a pinout diagram figure 5 : stv0680a pinout in 100qfp package gpio2 gpio3 ( 50/60 ) gpio4 gpio5 ( led ) gpio6 gpio7 senspwr sensrst sclko qclk sd0 sd1 sd2 sd3 sda scl rxd txd dvdd3 dvss4 pllavss pllavdd pllgvss pllgvdd reset 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 stv0680a dvss1 dq15 dvdd1 dq1 dq14 dq2 dq13 dq3 dq12 dq4 dq11 dq5 dq10 dq6 dq9 dq7 dq8 dqml we dqmu cas dclk ras cke cs ad12 dvss2 ad11 dvdd2 ad13 ad9 ad10 ad8 ad0 ad7 ad1 ad6 ad2 ad5 ad3 ad4 usbdetect data+ data- test0 test1 test2 xin xout dvss3 100qfp lo_bat lo_bat_ref dvss5 gpio0 ( mode ) gpio1 ( shutter ) 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 dq0 lcd1_a lcd1_b lcd1_c lcd1_d lcd1_e lcd1_f lcd1_g lcd2_a lcd2_b lcd2_c lcd2_d lcd2_e lcd2_f lcd2_g lcdcom piezo dvdd4 dacout dacres preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 39 this version: st vibu internal use only stv0680f_contents.fm 8.3 stv0680a package dimensions figure 6 : 100qfp package dimensions note : pin pitch is 0.65mm for sensor pinout and package dimensions, see section 10., section 11., and section 12. preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 40 this version: st vibu internal use only stv0680f_contents.fm 9. schematics and example parts list for complete camera design 9.1 schematics support schematics are shown in the following documents: ? stv0680+vv6444 reference design manual ? stv0680/680a+vv6410/6500 reference design manual both are available in the oem section of the st imaging division web site ? (st internal access) http://www.edb.st.com/tech_support/home.htm ? (all other access) http://www.vvl.co.uk/tech_support/home.htm an example parts list is shown in section 9.2, however the above documents should be referred to for the most up to date information. preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 41 this version: st vibu internal use only stv0680f_contents.fm 9.2 example parts list the following is taken from stv0680a + vv6410/6500 ref design manual rev 0.1. table 24 : stv0680a + vv6410/6500: parts list (1) bill of materials for dca1+vv6410/6500 camera rev 0.1, 23rd dec 1999 6v battery and power supply option 2 (using external 3v3 vreg) assumed. non-populated options shown with grey background. preliminary page 1 #qt y refdes device package value cost notes 1 1 b1 battery up to 9v with option 2 1 1 b1 battery up to 6v with option 1 2 1 c1 cap 805 10n 3 2 c3, c4 cap 805 100n c3, c4 option 2 only 3 22 c2,c7, cap 805 100n c8,c10,c11, c12,c13,c14, c17,c18,c20, c21,c23,c24, c25,c27,c28, c29,c30,c31, c32,c33 3 1 c37 cap 805 100n c37 for option 1 only 4 2 c5,c6 cap 805 22p 5 2 c15,c16 cap 805 1u 6 2 c19,c26 cap 805 220p 7 1 c22 cap 805 220n 8 1 c34 ecap t/h 10u 8 2 c35,c36 ecap t/h 10u c35, c36 option 2 only 9 1 d1 1n4001 do41 1n4001 gen purpose if 4 x aa or aaa batteries 9 1 d1 schottky do41 schottky only use schottky if 3 x aa or aaa batteries 10 1 d2 diode sot23 bas116 must be low leakage 11 2 d3,d4 diode sot23 bas16 only for rs232 12 3 f1,f2,f3 ferrite 805 may be required for fcc compliance 13 1 j1 usb_con con_usb_4 p_ type_b must be type b for usb compliance 14 1 j2 jack_skt scj-0355- b only for rs232 15 1 lcd1 2digitlc 16 1 led1 led 2pinthru could be omitted for reduced current cons. 17 1 q1 npn sot23 bc848 q1 only required for option 2 17 2 q2,q3 npn sot23 bc848 18 1 q4 npn sot23 only for rs232 19 1 q5 pnp sot23 bcw61 required for usb inrush protection 20 1 q6 pnp sot23 only for rs232 20 1 q10 pnp sot23 only required for option 1 21 1 q7 si2301ds sot23 only required for option 2 21 1 q8 si2301ds sot23 required for usb inrush protection 21 1 q9 si2301ds sot23 22 1 r1 res 805 220k 22 1 r4 res 805 220k r4 only req'd for rs232 camera with usb test points 23 1 r2 res 805 6r8 may be required for usb inrush protection (exact value not verified) 24 2 r9,r13 res 805 100k 24 1 r3 res 805 100k r3 only required for option 2. 24 1 r5 100k r5 only req'd for rs232 camera with usb test points 24 1 r12 100k r12 required for usb inrush protection 25 3 r10,r14, r16 res 805 1m 25 2 r6,r23 1m only one of r6/r23 is required 26 1 r7 res 805 470k 27 1 r8 res 805 82k 28 1 r11 res 805 430k suggested value for 6v battery 28 1 r11 res 805 510k suggested value for 4.5v battery total (page 1) preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 42 this version: st vibu internal use only stv0680f_contents.fm table 25 : stv0680a + vv6410/6500: parts list (2) bill of materials for dca1+vv6410/6500 camera rev 0.1, 23rd dec 1999 6v battery and power supply option 2 (using external 3v3 vreg) assumed. non-populated options shown with grey background. preliminary page 2 #qt y refdes device package value cost notes 29 1 r56 res 805 or option 1 only 29 1 r15 res 805 or for camera with no rs232 30 1 r17 res 805 33r 32 2 r19,r20 res 805 24r 33 1 r22 res 805 120k 34 9 r24,r26,r27, res 805 0r r24 fitting depends on flicker frequency r37,r38,r42, r43,r44,r51,r52 fit r51 or r52, not both 35 8 r25,r28,r29, res 805 10k r25 fitting depends on flicker frequency r31,r32,r33, r31, 32, 33, 34, 35 only for rs232 r34,r35 35 1 r41 res 805 10k r41 only required for option 2 36 1 r30 res 805 2k2 only for rs232 37 1 r36 res 805 680r 38 2 r39,r40 res 805 4k7 39 1 r50 res 805 390r r50 only required for option 1 41 1 sw1 toggle_s wi switch optional battery off switch when not in use (would lose stored images) 42 2 sw2,sw3 push_swi tc farnell _ 58 push button switches 43 1 t1 piezo farnell_9 26 44 6 tp1,tp2,tp3, testpoin t tp only required for rs232 tp4,tp5,tp6 camera with usb prodn. test 45 1 u1 3v3reg sot89 mc78fc33ht1 only required for option 2 could use to92 instead 46 1 u2 vv6500 48lcc vga sensor (different foortprint to vv6410) only require u2 or u6 47 1 u3 stv0680 100qfp future replacement stv0680a for vfw 48 1 u4 gm72v661 64 400mil_t s op sdram dual footprint is possible for u4 and u5 49 1 u5 gm72v161 62 400mil_t s op preferred sdram has low self refresh idd. e.g. (16mbit) l gm72v16162et75 hyundai hy57v161610dtc-7 micron mt48lc1m16a1tg s 50 1 u6 vv6410 36lcc cif sensor (different footprint to vv6500) only require u2 or u6 51 1 u8 voltage sop-23 2.7v e.g. telcom tc54vc2702ecb detector threshold ricoh rx5vlxxc series 52 1 x1 xtal hc49u 12mhz 53 1 lens lens with ir filter total (page 2) not all compatible memory chips exhibit a low enough self-refresh current to meet the target current for usb suspend mode (see table 21). two memory types have been suggested in table 25, based on limited evaluation by st, however this does not constitute a full characterisation, and no guarantees can be made that the self-refresh current consumption will match the target for usb suspend mode in all cases. please consult the memory manufacturer for precise information. ! note stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 43 this version: st vibu internal use only stv0680f_contents.fm preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 44 this version: st vibu internal use only stv0680f_444pckg.fm 10. vv6444 sensor pinout and package dimensions vv6444 has the same pinout and electrical characteristics as the previous generation vv6404, but microlenses are added for increased sensitivity, and the colour filters are different. although the vv64444 and vv6404 are electrically identical, the stv0680 and stv0680a use the correct settings for the vv6444 colour set. this means that a vv6404 should not be used with stv0680/680a. stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 45 this version: st vibu internal use only stv0680f_444pckg.fm 10.1 vv6444 pin listing pin name type description power supplies 1 avcc pwr core analogue power and reference supplies. 48 agnd gnd core analogue ground and reference supplies. 43 dvdd pwr core digital power. 44 dvss/dsub gnd core digital ground. 6 avdd pwr output stage power. 5 avss gnd output stage ground. 7 vvdd pwr analogue output buffer power. 9 vvss gnd analogue output buffer ground. 14 adcvdd pwr adc power. 10 adcvss gnd adc ground. 19 vdd1 pwr digital padring & logic power. 30 vdd2 pwr digital padring & logic power. 36 vdd3 pwr digital padring & logic power. 20 vss1 gnd digital padring & logic ground. 29 vss2 gnd digital padring & logic ground. 37 vss3 gnd digital padring & logic ground. analogue signals 45 vbloom oa anti-blooming pixel reset voltage 46 vbltw oa bitline test white level reference 47 vbg oa internally generated bandgap reference voltage 1.22v 2vcm/ vref2v5 oa common-mode input for osa and internally generated 2.5 v reference voltage. 3 vrt ia pixel reset voltage 4 vcdsh ia vcds 11 adcbot ia bottom voltage reference for adc 13 adctop ia top voltage reference for adc 13 topref oa internally generally top voltage reference for adc pin name type description digital control signals 12 holdpix id test pin - do not use 15 sin id frame timing reset (soft reset). preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 46 this version: st vibu internal use only stv0680f_444pckg.fm 16 resetb id - system reset. active low. serial interface 42 scl id - serial bus clock (input only). 41 sda bi - serial bus data (bidirectional, open drain). digital video interface 39 38 35 34 d[3] d[2] d[1] d[0]] odt tristateable 4-wire output data bus. d[3] is the most significant bit. 33 qck odt tristateable data qualification clock. 40 fst odt not required by stv0680a 17 oeb id digital output (tristate) enable. system clocks 31 clki id oscillator input. 32 clko od oscillator output. do not connect 18 21-28 dnc do not connect key a analogue input d digital input oa analogue output id - digital input with internal pull-up bi bidirectional id digital input with internal pull-down bi - bidirectional with internal pull-up od digital output bi bidirectional with internal pull-down odt tristateable digital output pin name type description stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 47 this version: st vibu internal use only stv0680f_444pckg.fm 10.2 vv6444 pinout diagram notes : 1. nc - not connected 2. (*) - paddle connections clki clko d[0] d[1] vdd3 vss3 dvss/dsub vbltw vbg vcds avcc agnd (*) vvss adcvss (*) adcvdd vdd1 vss1 sin 7 8 6 5 4 3 2 1 48 47 46 45 44 42 41 38 9 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 29 32 33 34 35 36 37 d[2] d[3] fst sda scl 48 pin lcc vcm / vref2v5 avss vbloom adcbot 40 39 18 30 31 43 nc avdd qck vvdd oeb resetb topref/adctop holdpix vrt vss2 vdd2 nc dvdd nc nc nc nc nc nc nc nc vv6444 figure 7 : vv6444 pinout preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 48 this version: st vibu internal use only stv0680f_444pckg.fm 10.3 vv6444 package dimensions figure 8 : vv6444 package dimensions in 48lcc (1) notes. 1. die is optically centred. 2. refractive index of glass is ~1.52. 3. distance to optical surface of die. 4. pixel area of sensor. 4 4 1 1 . 1 7 6 0 . 1 3 1 . 0 1 6 0 . 0 8 14.52 14.09 4.27 3 . 2 1 pin 1 pin 6 a a stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 49 this version: st vibu internal use only stv0680f_444pckg.fm figure 9 : vv6444 package dimensions in 48lcc (2) 3 2.27 1.85 1.12 0.90 0.60 0.50 a-a (6 : 1) preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 50 this version: st vibu internal use only stv0680f_410_pckg.fm 11. vv6410 pinout information and package dimensions note that early vv6410 samples (as can be seen on some stv0680a evks) are 48lcc, however the sampling and production package is 36lcc. 11.1 vv6410 pinout figure 10 : 36 pin clcc package pin assignment resetb d[0] lst/d[5] fst/d[6] vddcore/ vbus vbg vrt aoutp vddhi oeb clki 7 8 6 5 4 3 2 1 9 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 29 32 33 34 35 36 d[3] d[4] aud3v3 aoutn vbase avss 18 30 31 vbltw d[1] vid3v3 ain vsscore vssio sramvss d[2] qck sda suspend vddio d[7] vbloom reg3v3 scl porb vv6410 36lcc nc nc stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 51 this version: st vibu internal use only stv0680f_410_pckg.fm 11.2 vv6410 pin descriptions name pin number type description power supplies avss 10 gnd core analog ground and reference supplies. sramvss 17 gnd in-column sram analog ground. vddcore/ reg3v3 34 pwr digital logic power. vddio 33 pwr digital pad ring power. vsscore 22 gnd digital logic ground. vssio 23 gnd digital pad ring ground. analog signals vbloom 8 oa anti-blooming pixel reset voltage vbltw 7 oa bitline test white level reference vbg 1 oa internally generated bandgap reference voltage 1.22v vrt 2 ia pixel reset voltage ain 4 ia analog input to audio amplifier aoutp 5 oa analog output of audio amplifier (positive) aoutn 6 oa analog output of audio amplifier (negative) vddhi 9 ia incoming power supply 4 -> 6v vbase 35 oa drive for base of external bipolar vbus 36 ia incoming power supply 3.3 -> 6v aud3v3 3 oa on-chip audio amplifier voltage regulator output vid3v3 11 oa on-chip video supply voltage regulator output porb 13 od power-on reset (bar) output. digital video interface d[4] d[3] d[2] d[1] d[0] 27 26 25 24 20 odt tri-stateable 5-wire output data bus. - d[4] is the most significant bit. - d[4:0] have programmable drive strengths 2, 4 and 6 ma qck 32 odt tri-stateable data qualification clock. lst/d[5] 28 odt tri-stateable line start output may be configured as tri-stateable output data bit 5 d[5]. fst/d[6] 29 odt tri-stateable frame start signal. may be configured as tri-stateable output data bit 6 d[6]. preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 52 this version: st vibu internal use only stv0680f_410_pckg.fm d[7] 31 odt tri-stateable data wire (ms data bit). may be configured as tri-stateable output data bit 6 d[6]. oeb 16 id digital output (tri-state) enable. digital control signals resetb 21 id - system reset. active low. may be configured as system sync. active low. suspend 12 id - usb suspend mode control signal. active high if this feature is not required then the support circuit must pull the pin to ground. the combination of an active high signal and pull up pad was chosen to limit current drawn by the device while in suspend mode. serial interface scl 15 bi - serial bus clock (input only). sda 14 bi - serial bus data (bidirectional, open drain). system clocks clki 30 id schmitt buffered clock input or lvds positive clock input not connected nc 18, 19 not connected key a analog input d digital input oa analog output id - digital input with internal pull-up bi bidirectional id digital input with internal pull-down bi - bidirectional with internal pull-up od digital output bi bidirectional with internal pull-down odt tri-stateable digital output name pin number type description stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 53 this version: st vibu internal use only stv0680f_410_pckg.fm 11.3 vv6410 package details (36pin clcc) 10.67 - 0.13 + 0.30 2.67 2 . 0 2 8 . 1 3 0 . 1 3 1 . 0 2 0 . 1 3 4 0 p l a c e s r 0 . 1 5 pin 1 pin 5 pin 6 a a 1.09 0.15 (note 3) 2.15 - 0.26 + 0.16 0.60 - 0.10 0.00 1.55 0.16 a-a (8 : 1) preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 54 this version: st vibu internal use only stv0680f_500_pckg.fm 12. vv6500 pinout and pin descriptions (48pin lcc package) 12.1 pinout fi g ure 11 : 48 p in lcc p acka g e p in assi g nment reset d [ 1 ] d [ 2 ] d [ 3 ] d [ 4 ] vddcore vbase vbus vbg vbloom vddhi vcmtcas nc oe suspend 7 8 6 5 4 3 2 1 48 47 46 45 44 42 41 38 9 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 29 32 33 34 35 36 37 lst/d [ 5 ] fst/d [ 6 ] clki/clkip d [ 7 ] qck aud3v3 aoutp reg3v3 40 39 18 30 31 43 vbltw d [ 0 ] aoutn sda por vid3v3 avss ain vsscore vssio scl vddio nc nc nc nc nc nc nc sramvss vrt nc nc clkin nc vv6500 48lcc stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 55 this version: st vibu internal use only stv0680f_500_pckg.fm 12.2 vv6500 pin descriptions name pin number t y pe description power supplies avss 11 gnd core analog ground and reference supplies. sramvss 21 gnd in-column sram analog ground. vddcore 44 pwr digital logic power. vddio 43 pwr digital pad ring power. vsscore 29 gnd digital logic ground. vssio 30 gnd digital pad ring ground. sramvss 21 gnd in-column sram analogue ground. analog signals vbloom 8 oa anti-blooming pixel reset voltage vbltw 7 oa bitline test white level reference vbg 1 oa internally generated bandgap reference voltage 1.22v vcmtcas 13 ia common-mode input for column pre-amp. vrt 2 ia pixel reset voltage ain 4 ia analog input to audio amplifier aoutp 5 oa analog output of audio amplifier (positive) aoutn 6 oa analog output of audio amplifier (negative) vddhi 9 ia incoming power supply 4 -> 6v vbase 46 oa drive for base of external bipolar vbus 47 ia incoming power supply 3.3 -> 6v reg3v3 45 oa on-chip voltage regulator output aref ia on-chip audio amplifier reference input aud3v3 3 oa on-chip audio amplifier voltage regulator output vid3v3 12 oa on-chip video supply voltage regulator output porb 16 oa power-on reset (bar) output. digital video interface d[4] d[3] d[2] d[1] d[0] 36 35 34 33 32 odt tri-stateable 5-wire output data bus. - d[4] is the most significant bit. - d[4:0] have programmable drive strengths 2, 4 and 6 ma qck 42 odt tri-stateable data qualification clock. preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 56 this version: st vibu internal use only stv0680f_500_pckg.fm clkin 40 bi - lvds negative clock input lst/d[5] 37 odt tri-stateable line start output may be configured as tri-stateable output data bit 5 d[5]. fst/d[6] 38 odt tri-stateable frame start signal. may be configured as tri-stateable output data bit 6 d[6]. d[7] 41 odt tri-stateable data wire (ms data bit). may be configured as tri-stateable output data bit 6 d[6]. oeb 20 id digital output (tri-state) enable. digital control signals resetb 31 id - system reset. active low. may be configured as system sync. active low. suspend 31 id - usb suspend mode control signal. active high if this feature is not required then the support circuit must pull the pin to ground. the combination of an active high signal and pull up pad was chosen to limit current drawn by the device while in suspend mode. serial interface scl 18 bi - serial bus clock (input only). sda 17 bi - serial bus data (bidirectional, open drain). system clocks clki/clkip 39 id schmitt buffered clock input or lvds positive clock input not connected nc 10, 14, 19, 22- 28, 48 not connected ke y a analog input d digital input oa analog output id - digital input with internal pull-up bi bidirectional id digital input with internal pull-down bi - bidirectional with internal pull-up od digital output bi bidirectional with internal pull-down odt tri-stateable digital output name pin number t y pe description stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 preliminary cdstv0680f-c commercial in confidence 57 this version: st vibu internal use only stv0680f_500_pckg.fm 12.3 vv6500 package details (48 pin lcc) notes. 1. die is optically centred. 2. refractive index of glass is ~1.52. 3. distance to optical surface of die. 4. pixel area of sensor. 14.52 14.09 1 1 . 1 7 6 0 . 1 3 0 1 . 0 1 6 0 . 0 8 0 2 . 0 2 ( n o t e 4 ) 2.67 (note 4) pin 1 pin 6 a a 2.27 1.85 3 1.120 0.896 0.60 0.50 a-a (6 : 1) preliminary digital camera chipset; customer datasheet, rev 3.0, march 2000 stv0680a + vv6444/6410/6500 cdstv0680f-c commercial in confidence 58 this version: st vibu internal use only stv0680f_backpages.fm 13. evaluation kit stmicroelectronics recommends using the evaluation kit (e.g. stv-dca/cif-e01 ) for initial evaluation and design-in. the stv- dca includes a reference design board ( stv-dca/cif-r01 ) camera module, containing a stmicroelectronics cmos sensor + stv0680a chipset, memory, lens, connectors, lcd, battery holder, push buttons/switches, and other componentry as detailed. the push buttons are arranged for ease of operation as a real camera. optional pcb links enable alternate functionality, and demonstration software is included, as detailed in section 5. allows for picture download, video, and avi movie clips an evaluation kit is not available for stv0680+vv6444. several small form factor demonstration units (pcb0194) have been built, however, these are not identical to the camera described in this reference design. ! note stv 0 68 0 a + vv64 4 4/6 4 10/ 6 500 digital c amera chip s et; c u s tom e r d a tashe e t, re v 3.0, march 2 0 00 prelim i nary cdstv0680f-c co m m e rcia l in c onfi d en c e 59 this v e rsion: st vi bu interna l use onl y s t v06 8 0f _ ba c k p ag e s . f 14 . o r dering details * note : t h e var i an t numb e r o f stv0 6 80 a is in d icat e d b y t h e suf f i x -00 1 , 0 02 , 00 3 , e t c. c o nt a c t stm i cr o el e c t ron i cs f o r la t est i n format i o n . t echn i cal suppo r t th i s do c ume n t a n d o the r rel a te d te c h n i c a l s u p po r t i n format i on , s u c h a s d a ta s he e ts , s o ftwar e d o wnl o ad s ,e t c f o r stmicroe l ectro n ics i m a gi n g divisi o n pr o ducts c a n b e f o un d a t http://www.vvl.co.uk/tech_support/home.h t m note : al l t h e a b o v e w e b a d dr e s s e s whe n a c c e s s i n g fr o m w i th i n s t s h ou l d r e a d w ww . e d b . s t . c om r a th e r th a n www.vvl.co.uk description part number stv0 6 8 0 c o m p an i o n process o r (n o vf w or rs2 3 2 su p po r t) s t v06 8 0-0 0 1 stv 0 68 0 a compa n io n pr o c e ssor ( i nclu d in g vf w an d rs2 3 2 sup p o r t) stv0 6 8 0 a-00 2 * vv64 4 4+stv068 0 /stv680a designs lcc p a c ka g e d cif ima g e s e ns o r (5v) vv 6 44 4 c00 1 stv 0 68 0 /stv 0 68 0 a + vv 6 44 4 di g it a l camer a ch i pset, r e fer e nce d e s i gn m a n u a l a v a i la b l e f o r d o wnl o a d from ht t p://ww w . vvl.c o . uk/tech _ s u pp o r t / h o m e . h tm vv6410/6500+s t v 0 680a d e si g ns 36 p i n c l cc p a c k a ge d , microl e nse d cif co l o u rmos sensor vv6 4 10c 0 36 4 8p i n clcc p a c k a g e d , microl e nse d vg a c o l o urmo s se n s o r vv6 5 00c 0 01 d i g i ta l c a m e r a e v a l uat i o n kit f o r stv 0 68 0 /stv0 6 8 0 a+vv6 4 10 st v -dca/ci f -e01 d i g i ta l c a m e r a e v a l uat i o n kit f o r stv 0 68 0 /stv0 6 8 0 a+vv6 5 00 st v -dca/ v ga-e01 stv 0 6 8 0/stv 0 68 0 a + vv6 4 10/ 6 5 0 0 d i git a l c a m e ra c h ipse t , re f ere n c e d e s i gn m a n u a l a v a i la b l e f o r d o wnl o a d from ht t p://ww w . vvl.c o . uk/tech _ s u pp o r t / h o m e . h tm t a bl e 2 6 : o r dering details stv0680a + vv6444/6410/6500 digital camera chipset; customer datasheet, rev 3.0, march 2000 cdstv0680f-c 60 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specificati ons mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics the st logo is a registered trademark of stmicroelectronics ? 2000 stmicroelectronics - all rights reserved . stmicroelectronics, imaging division ? www.vvl.co.uk www.st.com asiapacific_sales@vvl.co.uk central_europe_sales@vvl.co.uk france_sales@vvl.co.uk japan_sales@vvl.co.uk nordic_sales@vvl.co.uk southern_europe_sales@vvl.co.uk uk_eire_sales@vvl.co.uk usa_sales@vvl.co.uk preliminary |
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