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STV0680A + VV6444/6410/6500
(R)
Low Cost Digital Camera (LCDC) Chipset
PRELIMINARY
DESCRIPTION
STMicroelectronics (ST), Imaging Division (formerly VLSI VISION Ltd.), has utilised its extensive experience in designing 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, incorporating a CMOS imaging sensor and STV0680A co-processor (formerly DCA1 ) enable camera manufacturers to offer an end product which is genuinely price competitive with traditional `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. ST's 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 ST's 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 resolution 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 number of pictures remaining, a low battery indicator, and operation mode, as well as a buzzer indicating picture taken, camera full, and self-timer countdown. A CMOS solution gives manufacturers inherent benefits, providing 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 customer's 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 Windows95TM or Windows98TM .
CDSTV0680F-C: Rev 3.0; Mar.2000
Commercial in Confidence
1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
PRELIMINARY
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.5 `Clear camera'. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.5.1 Entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.5.2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CDSTV0680F-C CDSTV0680F-CTOC.fm Commercial in confidence
2
This version: ST VIBU internal use only
PRELIMINARY
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
3.5.3 Exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.6 `Change resolution' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.6.1 Entering this mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.6.2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.6.3 Exiting this mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4. STV0680A hardware interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.1 STV0680A pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.2 Sensor interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.3 Memory interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 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 LED's . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
CDSTV0680F-C CDSTV0680F-CTOC.fm Commercial in confidence
3
This version: ST VIBU internal use only
PRELIMINARY
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
CDSTV0680F-C CDSTV0680F-CTOC.fm Commercial in confidence
4
This version: ST VIBU internal use only
7.2 STV0680/STV0680A companion processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.3 VV6444 Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
PRELIMINARY
STV0680A + VV6444/6410/6500
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
Revision notes
The following changes 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.
Added approximate shutter speeds, in Table 10. 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
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Changed IR filter recommendation, see section Section 2.1.1.
PRELIMINARY
STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
1. 1.1
Introduction 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 simplicity 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' can 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.
Push buttons: M ode Shutter Low cost lens
Optional LED Indicator
O ptional 2 x 7 seg. LCD
G PIO
LCD m em ory D river I/F R S232 I/F
STV0680A
16M Bit or 64M Bit SDRAM
Transceiver C ircuit P ower M anagem ent C ircuit
CMOS Sensor: VV6444/6410 (CIF) VV6500 (VGA)
Sensor data
Sensor clock O ptional Piezo Buzzer
Sensor I/F PW M A udio I/F
RS232 interface to PC USB interface to PC
6-9V Battery e.g., PP 3, 4-6 x AA, A AA, etc
USB I/F
Detect Low Battery
M ini speaker
Buffer A m p 12M Hz XTA L 3v3 supply (S TV0680A)
Switched sensor supply (5V for V V6444, 3v3 for VV 6410/6500)
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.:
Coprocessor
STV0680-001 STV0680A-002
Sensors supported
VV6444 VV6444/6410/6500
SDRAM supported
16Mbit only 16Mbit or 64Mbit
USB interface
Yes Yes
RS232 interface
No Yes
Video for Windows support
No Yes
Table 1 : Product choices
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1.3
Sensor choices
The following sensors are supported:
Sensor
VV6444 VV6410 VV6500
Resolution
CIF (352 x 288)
Sensor supply voltage
5v 3.3v
VGA (640 x 480)
Table 2 : Sensor choices with STV0680/STV0680A
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
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1.4
Key system features
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
*
AVI video file creation from image sequences captured in `continuous' mode
Interface type: PC Operating system:
STV680-001 STV0680A-002
RS232 Win9x, WinNT4, Win2k
Not available TWAIN
USB Win98 and Win2k only
TWAIN TWAIN, VfW
Table 3 : Driver choices
Custom OEM software can be developed by using the SDK (for SDK availability, contact ST), to upload thumbnails/still images or `continuous' images, e.g. for AVI file creation.
1.4.5
* * * * * *
Power management features and USB compliance
Picture retention with extremely low power operation, which appears to the user as if the camera is "switched off". Auto power-off after 30sec with no user activity Operates from 6-9V battery, although system voltage is 5V or 3.3V, dependant on sensor. Low battery detection Dependant on hardware configuration, switch-over to USB power supply is supported, to allow the device to operate with low batteries or without batteries, when connected to USB. Full USB compliance requirements are listed in the USB specification, however, in a camera designed using this chipset, the following must at least be included: (a) an SDRAM with sufficiently low self-refresh current, (b) USB inrush protection circuitry, and (c) (in the case of VV6444 only) a switched 5V sensor supply is used, to maintain sufficient supply voltage to the 5V sensor. See Section 9. for further details.
1.4.6
* * * *
General features
High speed picture download over USB ST Colour processing algorithms available under license (as part of drivers/SDK) USB or RS232 serial interface options, and VfW / TWAIN driver support. Customisation of STV0680A is possible to vary the features described in this document, subject to commercial agreement with ST, see Section 6.
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
2. 2.1
Detailed features 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 VGA 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..
Sensor
Sensor Image Size
Resolution mode
Final Image Size
Approximate VfW framerate (*)
9 frames/sec 25 frames/sec
VV6444/ 6410
CIF 352 x 288
High Low
CIF 352 x 288 QCIF 176 x 144 (Subsampled) VGA 640 x 480 QVGA 320 x 240 (Subsampled)
20 80
80 320 (see notes) 26 106
VV6500
VGA 640 x 480
High Low
(6) (24)
2 frames/sec 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
CIF 352 x 288
Resolution mode
Final Image Size
Max. no. of images stored in 16MBit memory
20 80
VV6444
High Low
CIF 352 x 288 QCIF 176 x 144 (Subsampled)
Table 5 : Image modes supported (STV0680-001) 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 CDSTV0680F-C STV0680F_contents.fm Commercial in confidence
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Max. no. of images stored in 16MBit memory
Max. no. of images stored in 64MBit memory
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STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
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.
! Note
2.2.1
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.
Push buttons
The following are typical of the type of functions which are supported by the chipset. These functions are achievable with no more 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 Section 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 Table 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 the 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).
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
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
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 following (exact compatibility is clarified in Table 3): 1. Simple image upload demonstration software supplied by ST, allowing uploading of stills or `continuous' images. This software 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 CDSTV0680F-C STV0680F_contents.fm Commercial in confidence
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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.
PRELIMINARY
STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
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 the 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.
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
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3.
Camera modes of operation
Mode
Standby mode 'Snapshot' mode
If shutter button pressed while in this mode
No function - pictures cannot be taken in standby mode Takes one picture, if sufficient light available, then returns to `Snapshot' mode
If mode button pressed while in this mode
Wakes up camera into `Snapshot' mode Moves to continuous capture mode
If no further action
Remains in standby mode Stays in `Snapshot' mode for 30 seconds then moves to standby mode Returns to `Snapshot' mode after 5 seconds
LCD displays
(Display is blank) Number of pictures still available to take
Self timer
Takes one picture after a 10 second countdown, if sufficient light available, then returns to `Snapshot' mode (1st press:) Prompts user to clear camera (2nd press:) Clears all images stored in camera, then returns to `Snapshot' mode
Moves to `Clear camera' mode Moves to `Change resolution' mode (see note)
"St"
'Clear camera'
"CL"
'Change resolution'
Changes resolution (i.e. Low to High, or High to Low) and returns to `Snapshot' mode
Returns to `Snapshot' mode
If currently in Low Resolution: "Hr" If currently in High resolution: "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. 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 3.1.1
Standby mode (or USB suspend mode) 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) CDSTV0680F-C STV0680F_contents.fm Commercial in confidence
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Continuous capture
Takes a picture every 80mS while button pressed, regardless of light available, then returns to `Snapshot' mode
Moves to self timer mode
Number of pictures still available to take
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
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 3.2.1
`Snapshot' mode (in High or Low resolution) 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 has not
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 3.3.1
`Continuous Capture' mode (in High or Low resolution) 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 3.4.1
Self-timer Mode (in High or Low resolution) 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 counter 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 3.5.1
`Clear camera' Entering this mode
Enabled using the mode button (from `Snapshot' mode, press three times).
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reached its maximum. Image data is stored in memory and picture counter is decremented.
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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 3.6.1
`Change resolution' 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.
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 the 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 button, 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 3.7.1
Tethered USB Video mode 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 3.8.1
* * *
Powering the camera off 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 CDSTV0680F-C STV0680F_contents.fm Commercial in confidence
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3.6.2
Description
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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.
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4. 4.1
STV0680A hardware interfaces 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.
tCK DCLK
tL
tH
C KE tCMS Command tCMH READ NOP PRECHARGE NOP
ACTIVE
A0-9,BA
ROW
COLUMN
A10
ROW tAS tAH tCMS tA C tO H tCMH
DQM
DQ tR C D READ Latency
DOUT M
DOUT M + 1
DOUT M + 2
DOUT M + 3
tR C tR A S tR P
D Q sam ple
D Q sam ple
D Q sam ple
D Q sam ple
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Figure 2 : SDRAM Read Timing (16Mbit device, burst read)
tCK DCLK
tL
tH
C KE tCMS Command tCMH WRITE NOP PRECHARGE NOP
ACTIVE
A0-9,BA
ROW
COLUMN
A10
ROW
tD S DQM
tD H
DQ tR C D
DIN M
DIN M + 1
DIN M + 2
DIN M + 3
tR C tR A S tR P
Figure 3 : SDRAM Write Timing (16Mbit device, burst write)
Symbol tCK tCH tCL tAC tOH tCMS tCMH tAS
Min 166.45 1/2 1/2
Max 166.89
Units ns tCK tCK
Symbol tDS tDH tRCD tRAS tRC tRP tRCD tAH
Min 81.01 83.41 1 5 7 2 1 82.76
Max
Units ns ns tCK
1/2 0 82.88 82.85 82.88
tCK ns ns ns ns
5
tCK tCK tCK tCK ns
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 15.6S 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
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tAS
tAH
tCMS
tCMH
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refresh from STV0680A takes place.
4.3.4
SDRAM initialisation Period
The SDRAM initialisation period is currently set to 981S 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 8.66S. 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.
Transmitting data
When a transmission is activated by STV0680A, the contents of an internal transmit shift register are shifted onto the TXD pin, every 8.66S. 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.
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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 may 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
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 frequency 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 well as an LCD common output, giving fifteen signals in total.
4.9
Switches and LED's
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.
! Note
4.9.1
The precise functionality of early demonstration units may vary from the actual user interface supported by STV0680A.
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.).
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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.
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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.
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5. 5.1
PC software Driver support available
Interface type: PC Operating system:
STV680-001 STV0680A-002
RS232 Win9x, WinNT4, Win2k
Not available TWAIN
USB Win98 and Win2k only
TWAIN TWAIN, VfW
Table 8 : Driver choices 5.2 Demonstration software
The following is supplied with evaluation kits/demonstration units (This software is mainly for demonstration purposes and should NOT be supplied as an end-user product.): 1. Simple demonstration software for uploading thumbnails and images. 2. Video demonstration application for STV0680-001 tethered "video" mode through USB (WIN 98 only) (NOT VfW compatible). This is not required for STV0680A, which can be used with standard VfW drivers. 3. AVI creator software for uploading continuous images for creating `movie' clips.
! Note
5.3
With STV0680, a simple video.exe application is provided. Whilst not being a VfW application, it gives sufficient framerate to allow for camera test, lens focussing, etc.
OEM software
OEM's have the following options for productisation of a camera based on the chipset: 1. TWAIN driver for uploading images, this would allow the camera to be bundled with standard TWAIN compatible imaging software. 2. Video for Windows driver for tethered video mode through USB (WIN 98 & WIN2K only). This would allow the camera to be bundled with standard video for windows software. 3. Development of custom end-user software, including the ST colour process, developed under license using the SDK.
5.4 5.4.1
Software Development Kit (SDK) 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 Windows95TM (Serial interface only) or Windows98/Win2KTM (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/Win2KTM, 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 Programmer's 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.
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5.4.2
API Overview
All OEM application software communicates with the camera by means of the API as illustrated in Figure 4. User Application
API
Drivers
Camera Module
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.
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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.
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7. 7.1
Detailed chipset specifications Typical camera specifications
The following data assumes that the camera has been built according to reference design shown in Section 9. Supply Voltage: Operating Temperature range Example lens horizontal FOV Max. RS232 cable length supported CIF output QCIF output VGA output (using VV6500) QVGA output (using VV6500) Image upload format PC driver output format 6-9V (when powered from battery) or 5V (when powered from USB). (* See Note 1.) 0oC - 40oC 44o (* See note 2) 2m 352 x 288 pixels
640 x 480 pixels 320 x 240 pixels Raw Bayer Colour RGB bitmap
Table 9 : Typical camera specifications
Notes: 1. Dual USB or battery power supply is only possible when the required power switching hardware is included, as shown in Section 9. 2. Figures are approximate and depend on actual components sourced.
Sensor
VV6444 VV6410 VV6500
Min
8.18S 8.67S 7.94S
Max
39mS 44mS 66mS
Table 10 : Approximate shutter speeds 7.2 STV0680/STV0680A companion processor
Parameter Supply Voltage Current consumption (normal operation) Standby current consumption (untethered standby mode or PC suspend mode) Operating Temperature range Package Exposure control
Min 3.0
Typ 3.3 20 0.35
Max 3.6 TBD TBD 70 100QFP 1 000 000:1
Units V mA mA
oC
0
Table 11 : STV0680/STV680A Specifications
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176 x 144 pixels
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Description
Storage Temperature (Approximate)
Range
50 to 150
Unit
oC
Table 12 : STV0680/STV0680A Absolute Maximum Ratings
Parameter
VDD VILU VIHU VIHUZ VDI VCM VOLU VOHU VOHU VCRS RPU RPD TFR TFF TFRFM ZDRV
Description
Power Supply USB differential pad D+/D- input low USB differential pad D+/D- input high (driven) USB differential pad D+/D- input high (floating) USB differential pad D+/D- input sensitivity USB differential pad D+/D- common mode voltage USB differential pad D+/D- output low voltage USB differential pad D+/D- output high voltage USB differential pad D+/D- output high voltage USB differential pad D+/D- output signal cross over voltage USB differential pad D+/D- pullup resistor USB differential pad D+/D- pulldown resistor Rise Time Fall Time Differential Rise Time and Fall Time Matching Driver Output Resistance
Min
3.0
Typ
3.3
Max
3.6 0.8
Units
V V V
Note s
2.0 2.7 0.2 0.8 0.0 2.8 2.8 1.3 1.425 14.25 4 4 90 28 2.5 0.3 3.6 3.6 2.0 1.575 15.75 20 20 111.11 44 3.6
V
V V V V V K K ns ns % Ohms
2
3 4
Table 13 : STV0680/STV0680A DC Characteristics
Notes on Table 13: 1. VDI = |(D+) - (D-)| 2. VCM includes VDI range. 3. TFRFM =( TFR / TFF ). 4. ZDRV includes an external resistor of 20 Ohms serial to this transceiver.
Parameter
Peak to peak jitters Duty cycle Operating voltage range Input low voltage Input high voltage Pull_in Time + Locking Time
27
Symbol
--VDD VIL VIH Tready
Min
-40 3 0.7VDD --
Typ
170 50 3.3
Max
220 60 3.6 0.8 VDD
Unit
ps % V V V ms
Condition
@VCOfreq = 100MHz ~ 200MHz
VDD=3.3V VDD=3.3V
--
0.5
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1
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Output Slew Rate [
Tsr(Fout)
--
0.100+0.1082*CL
--
ns
CL:Output Load(pF)
Table 14 : STV0680/STV0680A PLL Characteristics
Parameter
Crystal specification Crystal frequency Frequency tolerance Temperature stability Operating temperature Load capacitance
Min
Typ
Max
Units
50/50/10/30 (12mhz Fundamental) 12.000 50 50 -10 30 MHz ppm ppm
pF
Table 15 : STV0680/STV0680A Crystal Tolerance
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Deg. C
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7.3
VV6444 Sensor
Colour Image Format Pixel Size Image array size Array Format Sensor signal / Noise ratio Supply Voltage Package type Operating Temp. range Current consumption 'Snapshot'/self-timer/continuous/tethered video modes of operation Standby/PC Suspend Mode, sensor powered off (see note 2) Standby/PC Suspend Mode, sensor powered on (See note 3) Min 352 x 288 pixels (CIF) 12.0 x 11.0m 4.272mm x 3.212mm CIF Approx. 48dB (* See note 1) 5.0V DC +/-5% 48LCC 0oC - 40oC Typ 30 Negligible Approx. 300 Max TBD TBD TBD Units mA A 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
VIL VIH VOL VOH TJ Junction Temp Internal Pullup resistor Internal Pulldown resistor
Min.
-0.5v 0.7 x VDD
Max.
0.3 x VDD VDD + 0.5v 0.4V
Notes
Guaranteed input low voltage Guaranteed input high voltage At max IOL for pad type IOH = 100A At max IOH for pad type
2.4v
VDD - 0.5v 100 deg C 150k 150k
0 deg C 35k 35k
Table 17 : VV6444 DC Characteristics 7.4 VV6410 and VV6500 sensors
Colour Image Format Pixel Size 352 x 288 pixels (CIF) 7.5 x 6.9m
Table 18 : VV6410 Specifications
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Image array size Array Format Sensor signal / Noise ratio Package type Supply Voltage Operating Temp. range Current consumption: 'Snapshot'/self-timer/continuous/tethered video modes of operation Standby Mode/PC Suspend Mode, SUSPEND pin asserted (see note 1) Standby Mode/PC Suspend Mode, SUSPEND pin not asserted (see note 2) Min
2.67mm x 2.04mm CIF Approx. 57dB 36LCC 3.3V DC +/-5% 0oC - 40oC Typ 25 <100 <300 Max TBD TBD TBD Units mA A A
Table 18 : VV6410 Specifications
Notes: 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.
Colour Image Format Pixel Size Image array size Array Format Sensor signal / Noise ratio Supply Voltage Package type Operating Temp. range Current consumption: 'Snapshot'/self-timer/continuous/tethered video modes of operation Standby Mode/PC Suspend Mode, SUSPEND pin asserted (see note 1) Standby Mode/PC Suspend Mode, SUSPEND pin not asserted (see note 2) Min
640 x 480 pixels (VGA) 7.5 x 7.5m 4.89mm x 3.66mm VGA Approx. 57dB 3.3V DC +/-5% 48LCC 0oC - 40oC Typ 30 <100 <300 Max TBD TBD TBD Units mA A A
Table 19 : VV6500 Specifications
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
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.
Parameter
VIL VIH VOL VOH TJ Junction Temp Standard Pullup (SDA, SCL) Standard Pulldown (OEB) Non-standard Pullup (RESETB)
Min.
-0.5v 0.7 x VDD
Max.
0.3 x VDD VDD + 0.5v 0.4V
Notes
Guaranteed input low voltage Guaranteed input high voltage At max IOL for pad type IOH = 100A At max IOH for pad type
2.4v
VDD - 0.5v 100 deg C
0 deg C 35A current draw 25A current draw 66A current draw
42A current draw 250A current draw
Table 20 : VV6410/6500 DC Characteristics 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.
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52A current draw
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
7.5.1
Using VV6444 (sensor operates at @ 5V DC)
Mode
'Snapshot'/Continuous/ Self timer mode (while un-tethered) 'Snapshot'/Continuous/ Self timer mode (while tethered to PC) Camera standby mode (when NOT connected to USB)
Typical Current Cons.
80mA
Comments
80mA
Assuming appropriate hardware included, power is sourced from PC while USB connected. Total current in this mode equals:
+ SDRAM self-refresh current (see note 2) + peripheral circuitry (approx. 50A, 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. 50A, see note 3). + 200A , 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
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. 100-250A. 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 circuitry.
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Approx. 0.4mA + SDRAM self-refresh current (see note 2)
STV0680/680A Standby current consumption (see note 1)
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STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
7.5.2
Using VV6410/6500 (sensor operates at @ 3.3V DC)
Mode
'Snapshot'/Continuous/ Self timer mode (while un-tethered) 'Snapshot'/Continuous/ Self timer mode (while tethered to PC) Standby Mode (when NOT connected to USB): Sensor SUSPEND pin asserted (see note 4)
Typical
60mA
Comments
Assuming appropriate hardware included, power is sourced from PC while USB connected.
60mA
Approx. 0.5mA + SDRAM selfrefresh 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. 50A). + 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 selfrefresh 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. 50A). + 200A , 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
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. 100-250A. See Section 9. for recommendations. 3. Sensor suspend mode current <100A 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 200A can be expected.
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STV0680A + VV6444/6410/6500
8. 8.1
STV0680A Pin descriptions and Package Information STV0680A Pin Listing
Pin no.
Signal
Type
Description
Sensor Interface
drive
69 68 60 61 62 63 64 65 66 67
SENSPWR SENSRST SCL SDA SD3 SD2 SD1 SD0 QCLK SCLKO
Output, active high Output, active low Input/Output (OD,T) Input/Output (OD,T) Input (S,T) Input (S,T) Input (S,T) Input (S,T) Input (S,T) Output
Power-up Sensor Reset Sensor Sensor serial interface Sensor serial interface Sensor data Sensor data Sensor data Sensor data Qualification clock from sensor Clock output to sensor GPIO (see note)
2mA (SL) 2mA (SL) 4mA (SL) 4mA (SL)
4mA
77 76 75 74 73 72 71 70
GPIO0 (MODE) GPIO1 (SHUTTER) GPIO2 GPIO3 (50/60) GPIO4 GPIO5 GPIO6 GPIO7
Debounced input Debounced input IO (OD) Debounced input IO (OD) Output (OD) IO (OD) IO (OD)
Push button (Wake-up/Mode) Push button (Shutter/Confirm) Not used (tie to GND with 0R link) Link to select between 50Hz and 60Hz lighting Not used (tie to GND with 0R link) LED indicator Not used (tie to GND with 0R link) Not used (tie to GND with 0R link) USB Interface
8mA (SL) 8mA (SL) 8mA (SL) 8mA (SL) 8mA (SL) 8mA (SL) 8mA (SL) 8mA (SL)
42 43
USBDETECT DATA+
Input (S) Input/Output
Detect Power source from USB. USB speci(For camera with RS232 only, this pin should be tied to GND) fication V1.1 comUSB bus pliant I/O (For camera with RS232 only, this pin should be connected to test points to allow for USB production test (lens focussing)) 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
44
DATA-
Input/Output
58 59
TXD RXD
Output Input (S)
Serial data transmit (For camera with USB only, this pin should be tied to RXD) Serial data receive (For camera with USB only, this pin should be tied to TXD) STV0680A Master Clocks and Reset
4mA (SL)
48 49
XIN XOUT
Input Output CDSTV0680F-C
Quartz Crystal IN Quartz Crystal OUT
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Pin no.
51
Signal
RESET
Type
Input (S)
Description
Active (LOW) STV0680A reset System Memory (SDRAM) Interface
drive
20 22 24 28 31 33 35 37 39 41 40 38 36 34 32 26 30 25 23 21 19 18 16 14 12 10 8 6 4 100 2 5 7
35
DQMU DCLK CKE AD11 AD9 AD8 AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 AD10 AD12 AD13 CS RAS CAS WE DQML DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 DQ15 DQ14 DQ13
Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output, active low Output, active low Output, active low Output, active low Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output
Data input/output mask for dram_DQ[15:8] Clock: all SDRAM input signals are sampled on the positive edge Clock enable: activates (HIGH) and deactivates (LOW) the SDRAM CLK signal SDRAM address A11 for 64M SDRAM or BA for 16M SDRAM SDRAM address A9 SDRAM address A8 SDRAM address A7 SDRAM address A6 SDRAM address A5 SDRAM address A4 SDRAM address A3 SDRAM address A2 SDRAM address A1 SDRAM address A0 SDRAM address A10
2mA (SL) 4mA 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL)
2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL)
SDRAM address A12, BA0 for 64M SDRAM, unused on 16M 2mA (SL) SDRAM address A13, BA1 for 64M SDRAM, unused on 16M 2mA (SL) Chip select: enables (registered LOW) and disables (registered HIGH) the SDRAM command decoder. SDRAM row address strobe command SDRAM column address strobe command SDRAM write enable command Data input/output mask for dram_DQ[7:0] SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus SDRAM Data Bus CDSTV0680F-C Commercial in confidence 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL)
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STV0680A + VV6444/6410/6500
Pin no.
9 11 13 15 17
Signal
DQ12 DQ11 DQ10 DQ9 DQ8
Type
Input/Output Input/Output Input/Output Input/Output Input/Output
Description
SDRAM Data Bus SDRAM Data Bus SDRAM Data bus SDRAM Data bus SDRAM Data bus LCD Interface
drive
2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL)
85 93 94 95 96 97 98 99 86 87 88 89 90 91 92
LCDCOM LCD1_6 LCD1_5 LCD1_4 LCD1_3 LCD1_2 LCD1_1 LCD1_0 LCD2_6 LCD2_5 LCD2_4 LCD2_3 LCD2_2 LCD2_1 LCD2_0
Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output
LCD Common LCD digit 1 segment G LCD digit 1 segment F LCD digit 1 segment E LCD digit 1 segment D LCD digit 1 segment C LCD digit 1 segment B LCD digit 1 segment A LCD digit 2 segment G LCD digit 2 segment F LCD digit 2segment E LCD digit 2segment D LCD digit 2segment C LCD digit 2 segment B LCD digit 2 segment A Piezo Interface
2mA (SL) 2mA (SL)
2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL) 2mA (SL)
84
PIEZO
Output
Direct connection to piezo buzzer Battery Level Comparator Interface
8mA (SL)
80 79
LO_BAT LO_BAT_REF
Input (A) Input (A)
Battery level comparator input. The voltage on low_bat is compared to the reference to determine the battery status 1.22V battery level comparator reference input Power and Ground
1, 27, 50, 56, 78 3, 29, 57, 83 52 53 54 55
DVSS[1-5] DVDD[1-4] PLLGVDD PLLGVSS PLLAVDD PLLAVSS
Power pin Power pin Power pin Power pin Power pin Power pin
Digital Ground Digital Power PLL Guard Power PLL Guard Ground PLL Analog Power PLL Analog Ground Non-user pins
45 46
TEST0 TEST1
Input Input
Non-user pin - connect to 3V3 Non-user pin - connect to 3V3 CDSTV0680F-C
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STV0680A + VV6444/6410/6500
Pin no.
47 81
Signal
TEST2 DACRES I(A)
Type
Input Non-user pin
Description
Non-user pin - connect to 3V3 See example schematic in Section 9. DAC bias amplifier reference input
drive
82
DACOUT
Non-user pin O (A)
See example schematic in Section 9. 8-bit DAC current source output
0-10mA (2)
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.
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STV0680A + VV6444/6410/6500
8.2
STV0680A pinout diagram
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 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 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 100QFP
Figure 5 : STV0680A pinout in 100QFP package
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D VSS1 D Q 15 D VD D 1 DQ1 D Q 14 DQ2 D Q 13 DQ3 D Q 12 DQ4 D Q 11 DQ5 D Q 10 DQ6 DQ9 DQ7 DQ8 DQML WE DQMU C AS D C LK R AS C KE CS A D12 D VSS2 A D11 D VD D 2 A D13
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
LO_BAT LO_BAT_REF DVSS5 GPIO0 (MODE) GPIO1 (SHUTTER) 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
AD 9 A D10 AD 8 AD 0 AD 7 AD 1 AD 6 AD 2 AD 5 AD 3 AD 4 U S BD ETEC T DA TA+ D ATATE ST0 TE ST1 TE ST2 XIN XO U T D VSS3
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
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. CDSTV0680F-C STV0680F_contents.fm Commercial in confidence
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STV0680A + VV6444/6410/6500
9. 9.1
* *
Schematics and example parts list for complete camera design Schematics
STV0680+VV6444 Reference Design Manual STV0680/680A+VV6410/6500 Reference Design Manual
Support schematics are shown in the following documents:
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.
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9.2
Example Parts List
The following is taken from STV0680A + VV6410/6500 Ref Design Manual Rev 0.1.
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 # QTYREFDES DEVICE PACKAGE VALUE COST 1 1 B1 BATTERY 1 1 B1 BATTERY 2 1 C1 CAP 805 10N 3 2 C3, C4 CAP 805 100N 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 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 9 1 D1 1N4001 DO41 1N4001 9 1 D1 Schottky DO41 Schottky 10 1 D2 DIODE SOT23 BAS116 11 2 D3,D4 DIODE SOT23 BAS16 12 3 F1,F2,F3 FERRITE 805 13 1 J1 USB_CON CON_USB_4 P_ TYPE_B 14 1 J2 JACK_SKT SCJ-0355B 15 1 LCD1 2DIGITLC 16 1 LED1 LED 2PINTHRU 17 1 Q1 NPN SOT23 BC848 17 2 Q2,Q3 NPN SOT23 BC848 18 1 Q4 NPN SOT23 19 1 Q5 PNP SOT23 BCW61 20 1 Q6 PNP SOT23 20 1 Q10 PNP SOT23 21 1 Q7 SI2301DS SOT23 21 1 Q8 SI2301DS SOT23 21 1 Q9 SI2301DS SOT23 22 1 R1 RES 805 220K 22 1 R4 RES 805 220K 23 1 R2 RES 805 6R8 24 24 24 24 25 25 26 27 28 28 2 1 1 1 3 2 1 1 1 1 R9,R13 R3 R5 R12 R10,R14, R16 R6,R23 R7 R8 R11 R11 RES RES 805 805 100K 100K 100K 100K 1M 1M 470K 82K 430K 510K Total (Page 1)
NOTES Up to 9v with option 2 Up to 6v with option 1 C3, C4 option 2 only
C37 for option 1 only
C35, C36 option 2 only Gen purpose if 4 x AA or AAA batteries Only use schottky if 3 x AA or AAA batteries Must be low leakage Only for RS232 May be required for FCC compliance Must be Type B for USB compliance Only for RS232 Could be omitted for reduced current cons. Q1 only required for option 2 Only for RS232 Required for USB inrush protection Only for RS232 Only required for option 1 Only required for option 2 Required for USB inrush protection
R4 only req'd for RS232 camera with USB test points May be required for USB inrush protection (Exact value not verified) R3 only required for Option 2. R5 only req'd for RS232 camera with USB test points R12 required for USB inrush protection Only one of R6/R23 is required
RES RES RES RES RES
805 805 805 805 805
Suggested value for 6v battery Suggested value for 4.5v battery
Table 24 : STV0680A + VV6410/6500: Parts list (1)
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R41 only required for option 2 Only for RS232
42 43 44 45 46 47 48 49
2 SW2,SW3 1 T1 6 TP1,TP2,TP3, TP4,TP5,TP6 1 U1 1 U2 1 U3 1 U4 1 U5
PUSH_SWI TC FARNELL_ PIEZO FARNELL_9 TESTPOIN T TP 3V3REG VV6500 SOT89 48LCC
58 26
R50 only required for option 1 Optional battery off switch when not in use (would lose stored images) Push button switches Only required for RS232 camera with USB prodn. Test Only required for option 2 Could use TO92 instead VGA sensor (different foortprint to VV6410) Only require U2 or U6 Future replacement STV0680A for VfW SDRAM dual footprint is possible for U4 and U5 Preferred SDRAM has low self refresh Idd. e.g. (16Mbit) LGM72V16162ET75 Hyundai HY57V161610DTC-7 Micron MT48LC1M16A1TG S CIF sensor (different footprint to VV6500) Only require U2 or U6 e.g. TELCOM TC54VC2702ECB RICOH Rx5VLxxC SERIES Lens with IR filter
MC78FC33HT1
STV0680 100QFP GM72V661 64 400MIL_TSOP GM72V161 62 400MIL_TSOP
50 51 52 53
1 U6 1 U8 1 X1 1 Lens
VV6410
36LCC 2.7v threshold 12MHZ Total (Page 2)
VOLTAGE SOP-23 DETECTOR XTAL HC49U
Table 25 : STV0680A + VV6410/6500: Parts list (2)
! Note
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.
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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 # QTYREFDES DEVICE PACKAGE VALUE COST 29 1 R56 RES 805 OR 29 1 R15 RES 805 OR 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 R37,R38,R42, R43,R44,R51,R52 35 8 R25,R28,R29, RES 805 10K R31,R32,R33, R34,R35 35 1 R41 RES 805 10K 36 1 R30 RES 805 2K2 37 1 R36 RES 805 680R 38 2 R39,R40 RES 805 4K7 39 1 R50 RES 805 390R 41 1 SW1 TOGGLE_S WI SWITCH
NOTES Option 1 only For camera with no RS232
R24 fitting depends on flicker frequency Fit R51 or R52, not both R25 fitting depends on flicker frequency R31, 32, 33, 34, 35 only for RS232
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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.
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10.1 VV6444 Pin Listing
Pin Name Type POWER SUPPLIES 1 48 43 44 6 5 7 9 14 10 19 30 36 20 29 37 AVCC AGND DVDD DVSS/Dsub AVDD AVSS VVDD VVSS ADCVDD ADCVSS VDD1 VDD2 VDD3 VSS1 VSS2 VSS3 PWR GND PWR GND PWR GND PWR GND PWR GND PWR PWR PWR GND GND GND Core analogue power and reference supplies. Core analogue ground and reference supplies. Core digital power. Core digital ground. Output stage power. Output stage ground. Analogue output buffer power. Description
ADC power. ADC ground. Digital padring & logic power. Digital padring & logic power. Digital padring & logic power. Digital padring & logic ground. Digital padring & logic ground. Digital padring & logic ground. ANALOGUE SIGNALS
45 46 47 2 3 4 11 13 13
VBLOOM VBLTW VBG VCM/ VREF2V5 VRT VCDSH ADCbot ADCtop TopRef
OA OA OA OA IA IA IA IA OA
Anti-blooming pixel reset voltage Bitline test white level reference Internally generated bandgap reference voltage 1.22V Common-mode input for OSA and Internally generated 2.5 V reference voltage. Pixel reset voltage VCDS Bottom voltage reference for ADC Top voltage reference for ADC Internally generally top voltage reference for ADC
Pin
Name
Type
Description DIGITAL CONTROL SIGNALS
12 15
45
HOLDPIX SIN
ID ID
Test Pin - do not use Frame timing reset (soft reset). CDSTV0680F-C Commercial in confidence
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Analogue output buffer ground.
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Pin 16
Name RESETB
Type ID System Reset. Active Low. SERIAL INTERFACE
Description
42 41
SCL SDA
ID BI
Serial bus clock (input only). Serial bus data (bidirectional, open drain). DIGITAL VIDEO INTERFACE
33 40 17
QCK FST OEB
ODT ODT ID
Tristateable data qualification clock. Not required by STV0680A Digital output (tristate) enable. SYSTEM CLOCKS
31 32
CLKI CLKO
ID OD
Oscillator input. Oscillator output. Do not connect
18 21-28
DNC
Do not connect
Key A OA BI BI BI Analogue Input Analogue Output Bidirectional Bidirectional with internal pull-up Bidirectional with internal pull-down D ID ID OD ODT Digital Input Digital input with internal pull-up Digital input with internal pull-down Digital Output Tristateable Digital Output
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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.
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10.2 VV6444 Pinout Diagram
VDD2
30 CLKI CLKO QCK D[0] D[1] VDD3 VSS3 D[2] D[3] FST SDA SCL 31 32 33 34 35 36
29
28
27
26
25
24
23
22
21
20
19 18 17 16 15 14 13 NC OEB RESETB SIN ADCVDD TopRef/ADCTop HOLDPIX ADCBot ADCVSS (*) VVSS NC VVDD
VDD1
VSS2
VSS1
NC
NC
NC
NC
NC
NC
NC
NC
VV6444
37 38 39 40 41 42 43 DVDD 44 DVSS/Dsub 45 VBLOOM 46 VBLTW 47 VBG 48 AGND (*) 1 AVCC 2 VCM / VREF2V5 3 VRT 4 VCDS 5 AVSS 6 AVDD 48 pin LCC 12 11 10 9 8 7
Figure 7 : VV6444 Pinout
Notes: 1. NC - Not connected 2. (*) - Paddle connections
47
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
10.3 VV6444 Package Dimensions
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 4.27
4
A
Pin 1
A
Pin 6
Figure 8 : VV6444 package dimensions in 48LCC (1)
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This version: ST VIBU internal use only
11.176 0.13
1.016 0.08
3.21
4
PRELIMINARY
STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
2.27 1.85
3
0.60 0.50
A-A (6 : 1)
Figure 9 : VV6444 package dimensions in 48LCC (2)
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STV0680A + VV6444/6410/6500
11. VV6410 Pinout information and package dimensions
Note that early VV6410 samples (as can be seen on some STV0680A EVK's) are 48LCC, however the sampling and production package is 36LCC.
11.1 VV6410 pinout
VSScore
SRAMVSS
RESETB
VSSio
OEB
D[0]
NC
23 D[1] 24
22
21
20
19
18
17
16
15 14
SCL
NC
D[2]
25
13
PORB
D[3]
26
12
SUSPEND
D[4]
27
VV6410
LST/D[5] 28
11
Vid3V3
36LCC
10
AVSS
FST/D[6]
29
9
VDDhi
CLKI
30
8
Vbloom
D[7]
31
7
Vbltw
QCK
32 33 VDDio 34 VDDcore/ Reg3V3 35 Vbase 36 Vbus 1 VBG 2 VRT 3 Aud3V3 4 AIN 5 AoutP
6
AoutN
Figure 10 : 36 pin CLCC package pin assignment
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STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
11.2
VV6410 Pin descriptions
Name
Pin Number
Type POWER SUPPLIES
Description
AVSS SRAMVSS VDDcore/ Reg3V3 VDDio VSScore VSSio
10 17 34 33 22 23
GND GND PWR PWR GND GND
Core analog ground and reference supplies. In-column SRAM analog ground. Digital logic power. Digital pad ring power. Digital logic ground. Digital pad ring ground.
Vbloom VBLTW VBG VRT AIN AOutP AOutN VDDHI VBase Vbus Aud3V3 Vid3V3 PORB
8 7 1 2 4 5 6 9 35 36 3 11 13
OA OA OA IA IA OA OA IA OA IA OA OA OD
Anti-blooming pixel reset voltage Bitline test white level reference Internally generated bandgap reference voltage 1.22V Pixel reset voltage Analog input to Audio Amplifier Analog output of Audio Amplifier (positive) Analog output of Audio Amplifier (negative) Incoming power supply 4 -> 6V Drive for base of external bipolar Incoming power supply 3.3 -> 6V On-chip Audio Amplifier Voltage Regulator Output On-chip Video Supply Voltage Regulator Output Power-on Reset (Bar) Output.
DIGITAL VIDEO INTERFACE
D[4] D[3] D[2] D[1] D[0] QCK LST/D[5] 27 26 25 24 20 32 28 ODT ODT Tri-stateable data qualification clock. 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].
51
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
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ANALOG SIGNALS
PRELIMINARY
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
Name
D[7]
Pin Number
31
Type
ODT
Description
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 SDA 15 14 BI BI Serial bus clock (input only). 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 OA BI BI BI Analog Input Analog Output Bidirectional Bidirectional with internal pull-up Bidirectional with internal pull-down D ID ID OD ODT Digital Input Digital input with internal pull-up Digital input with internal pull-down Digital Output Tri-stateable Digital Output
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
11.3 VV6410 package Details (36pin CLCC)
40 PR 0.1 la 5c
es
Pin 1
(note 3) 1.09 0.15
0.16+ 0.26 - 2.15
1.55 0.16
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0.30+ 0.13 - 10.67
A
Pin 5
Pin 6
0.00 0.10 - 0.60
A-A (8 : 1)
2.67
A
2.02
1.02 0.13
8.13 0.13
PRELIMINARY
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
STV0680A + VV6444/6410/6500
12. VV6500 Pinout and pin descriptions (48pin LCC package) 12.1 Pinout SRAMVSS VSSCORE
VSSIO
NC
NC
NC
NC
NC
NC
NC
30 RESET D[0] D[1] D[2] D[3] D[4] LST/D[5] FST/D[6] C LKI/C LKIP C LK IN D[7] QCK 31 32 33 34 35 36 37 38 39 40 41 42 43 VDDIO
29
28
27
26
25
24
23
22
21
20
19 18 17 16 15 14 SCL
NC
OE
POR SUSPEND NC VCMTCAS VID3V3 AVSS NC VDDHI VBLOOM VBLTW
VV6500 48LCC
13 12 11 10 9 8 7
44 VDDCORE
45 REG3V3
46 VBASE
47 VBUS
48 NC
1 VBG
2 VRT
3 AUD3V3
4 AIN
5 AOUTP
6
Figure 11 : 48 pin LCC package pin assignment
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This version: ST VIBU internal use only
SDA
A O U TN
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STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
12.2 VV6500 pin descriptions
Name
Pin Number
Type POWER SUPPLIES
Description
AVSS SRAMVSS VDDcore VDDio VSScore VSSio SRAMVSS
11 21 44 43 29 30 21
GND GND PWR PWR GND GND GND
Core analog ground and reference supplies. In-column SRAM analog ground. Digital logic power. Digital pad ring power. Digital logic ground. Digital pad ring ground. In-column SRAM analogue ground.
ANALOG SIGNALS
Vbloom VBLTW VBG VCMTCAS VRT AIN AOutP AOutN VDDHI VBase Vbus Reg3V3 ARef Aud3V3 Vid3V3 PORB 3 12 16 8 7 1 13 2 4 5 6 9 46 47 45 OA OA OA IA IA IA OA OA IA OA IA OA IA OA OA OA Anti-blooming pixel reset voltage Bitline test white level reference Internally generated bandgap reference voltage 1.22V Common-mode input for column pre-amp. Pixel reset voltage Analog input to Audio Amplifier Analog output of Audio Amplifier (positive) Analog output of Audio Amplifier (negative) Incoming power supply 4 -> 6V Drive for base of external bipolar Incoming power supply 3.3 -> 6V On-chip Voltage Regulator Output On-chip Audio Amplifier Reference Input On-chip Audio Amplifier Voltage Regulator Output On-chip Video Supply Voltage Regulator Output Power-on Reset (Bar) Output.
DIGITAL VIDEO INTERFACE
D[4] D[3] D[2] D[1] D[0] QCK 36 35 34 33 32 42 ODT Tri-stateable data qualification clock. 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
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STV0680A + VV6444/6410/6500
Name
CLKIN LST/D[5]
Pin Number
40 37
Type
BI ODT LVDS negative Clock input
Description
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].
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 SDA 18 17 BI BI Serial bus clock (input only). 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, 2228, 48 Not connected
Key
A OA BI BI BI Analog Input Analog Output Bidirectional Bidirectional with internal pull-up Bidirectional with internal pull-down D ID ID OD ODT Digital Input Digital input with internal pull-up Digital input with internal pull-down Digital Output Tri-stateable Digital Output
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This version: ST VIBU internal use only
OEB
20
ID
Digital output (tri-state) enable.
57
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.
STV0680A + VV6444/6410/6500
(note 4) 2.02
0.60 0.50
Pin 6
A
Pin 1
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
A-A (6 : 1)
This version: ST VIBU internal use only
1.016 0.080
11.176 0.130
STV0680F_500_pckg.fm
2.27 1.85 1.120 3 0.896 (note 4) 2.67 14.52 14.09
12.3 VV6500 package Details (48 pin LCC)
A
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13. Evaluation kit
STMicroelectronics recommends using the Evaluation Kit (e.g. STV-DCA/CIF-E01) for initial evaluation and design-in. The STVDCA 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
! Note
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.
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Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
14. Ordering details
Description
STV0680 companion processor (no VfW or RS232 support) STV0680A companion processor (including VfW and RS232 support)
Part number
STV0680-001 STV0680A-002*
VV6444+STV0680/STV680A designs
LCC packaged CIF Image Sensor (5v) STV0680/STV0680A + VV6444 Digital Camera Chipset, Reference Design Manual VV6444C001 Available for download from http://www.vvl.co.uk/tech_support/ home.htm
VV6410/6500+STV0680A designs
48pin CLCC packaged, microlensed VGA ColourMOS sensor Digital camera Evaluation Kit for STV0680/STV0680A+VV6410 Digital camera Evaluation Kit for STV0680/STV0680A+VV6500 STV0680/STV0680A + VV6410/6500 Digital Camera Chipset, Reference Design Manual Table 26 : Ordering details
VV6500C001 STV-DCA/CIF-E01 STV-DCA/VGA-E01 Available for download from http://www.vvl.co.uk/tech_support/ home.htm
* Note: The variant number of STV0680A is indicated by the suffix -001, 002, 003, etc. Contact STMicroelectronics for latest information.
Technical support
This document and other related technical support information, such as datasheets, software downloads,etc for STMicroelectronics Imaging Division Products can be found at http://www.vvl.co.uk/tech_support/home.htm Note: All the above web addresses when accessing from within ST should read www.edb.st.com rather than www.vvl.co.uk
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36pin CLCC packaged, microlensed CIF ColourMOS sensor
VV6410C036
PRELIMINARY
STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
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 from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications 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 (c) 2000 STMicroelectronics - All Rights Reserved .
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
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www.st.com
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