VB6851 QXGA camera module with auto focus Data Brief Features ■ 3.15 megapixel resolution sensor (2048 x 1536) ■ Integrated auto-focus mechanism ■ High level autofocus control interface ■ 4 element lens ■ Compact size: 8.5 mm x 8.5 mm x 5.9 mm ■ Compatible with SMIA 1.0 profile 2 functional specification ■ Video data interface - CCP2.0 ■ Command interface - CCI ■ Analog power supply from 2.4 V to 2.9 V ■ Digital power supply from 1.7 V to 2.9 V ■ On-board 10 bit ADC ■ Integral EMC shielding and EMI reduction techniques ■ Ultra low power standby mode ■ Analog binning (2x2, 2x4) for low power video mode PC00 accelerator (e.g. STV0986 ) or application engine (e.g. STn8815) device can be incorporated in the phone system to run the algorithms in hardware. The specifications of these devices are contained in a separate document. The module design is optimized for both footprint and height. The auto-focus mechanism combined with a multi-element lens provides excellent image quality at focus distances from less than 10 cm to infinity. All external components, including the auto-focus actuator drivers, are integrated inside the camera module, apart from two CCI pull-up resistors. Description This databrief outlines a high performance 3.15 megapixel auto-focus camera module (VB6851) for use across a range of mobile phone handsets and accessories. It is designed to be used for both high quality stills capture and video modes. The module is SMIA 1.0 profile 2 compatible and is capable of generating raw bayer 3 MP images up to 20 fps. The VB6851 supports the CCI control and CCP 2.0 data interfaces. VB6851 offers an ultra low power consumption hardware standby mode consuming less than 30 µW (typ.). As different phone platforms have different baseband processors with varying capabilities, it may not be possible for all phones to support the associated image processing and auto-focus algorithms. Where the baseband cannot support this processing load, a separate hardware February 2008 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 Overview VB6851 1 Overview Figure 1. System diagram Figure 2. Block diagram VB6851 EXTCLK XSHUTDOWN PLL and clock management Power Mgmt (CLKP, CLKN) or application processor (STn8815) CLKP CLKN DATAP DATAN Scaling Defect Correction Output De-rating Output Formatter Table 1. Readout Dark Cal Y Decoder CCP 2.0 Sensor control registers Readout CCI (SLC + SDA) SCL SDA CCI Slave 3 megapixel auto-focus camera module Power-on reset GR STV0986 Imaging system controller or baseband CCP2 TX EXTCLK XSHUTDOWN VB6851 Line SRAM X Decoder Column ADC 2056 x 1544 Pixel array Column ADC X Decoder Line SRAM Technical specifications Parameter Description Pixel resolution 2048 x 1536 (QXGA) Sensor technology ST IMG175 process Pixel size 1.75 µm x 1.75 µm Exposure control + 81 dB Analog gain + 24 dB (max) Digital gain + 6 dB (max) Dynamic range 60 dB Signal to noise 36 dB (@ 100 lux) Supply voltages Analog: 2.4 V - 2.9 V Digital: 1.7 V - 1.9 V Average power consumption 20fps <150 mW in infinity <350 mW at macro including actuator current Package size (lxwxh) 8.5 mm x 8.5 mm x 5.9 mm Lens 51° +/- 2 HFOV F/2.8 TV distortion <|1.0%| Relative illumination 45 % (typ.) Package type SMIA85 auto-focus System attach SMIA85 socket 2/4 VDIG DGND VCAP VANA AGND VB6851 2 Ordering information Ordering information Table 2. Order codes Order code Package VB6851S0VO/T2(1) Packing SMIA85AF with CCP2 I/F with socket Tape and reel 1. ECOPACK® package 3 Revision history Table 3. Document revision history Date Revision 07-Feb-2008 1 Changes Initial release. 3/4 VB6851 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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