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MT9M031I12STM-DRBR Datasheet(PDF) 8 Page - ON Semiconductor |
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MT9M031I12STM-DRBR Datasheet(HTML) 8 Page - ON Semiconductor |
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8 / 34 page  MT9M021-MT9M031_DS Rev. G Pub. 4/15 EN 8 ©Semiconductor Components Industries, LLC,2015. MT9M021/MT9M031: 1/3-Inch CMOS Digital Image Sensor General Description General Description The ON Semiconductor MT9M021/MT9M031 can be operated in its default mode or programmed for frame size, exposure, gain, and other parameters. The default mode output is a full-resolution image at 45 frames per second (fps). It outputs 12-bit raw data, using either the parallel or serial (HiSPi) output ports. The device may be operated in video (master) mode or in frame trigger mode. FRAME_VALID and LINE_VALID signals are output on dedicated pins, along with a synchronized pixel clock. A dedicated FLASH pin can be programmed to control external LED or flash exposure illumination. The MT9M021/MT9M031 includes additional features to allow application-specific tuning: windowing, adjustable auto-exposure control, auto black level correction, on-board temperature sensor, and row skip and digital binning modes. The sensor is designed to operate in a wide temperature range (–30°C to +70°C). Functional Overview The MT9M021/MT9M031 is a progressive-scan sensor that generates a stream of pixel data at a constant frame rate. It uses an on-chip, phase-locked loop (PLL) that can be optionally enabled to generate all internal clocks from a single master input clock running between 6 and 50 MHz. The maximum output pixel rate is 74.25 Mp/s, corre- sponding to a clock rate of 74.25 MHz. Figure 1 shows a block diagram of the sensor. Figure 1: Block Diagram User interaction with the sensor is through the two-wire serial bus, which communi- cates with the array control, analog signal chain, and digital signal chain. The core of the sensor is a 1.2 Mp Active- Pixel Sensor array. The MT9M021/MT9M031 features global shutter technology for accurate capture of moving images. The exposure of the entire array is controlled by programming the integration time by register setting. All rows simultaneously integrate light prior to readout. Once a row has been read, the data from the columns is sequenced through an analog signal chain (providing offset correction and gain), and then through an analog-to- digital converter (ADC). The output from the ADC is a 12-bit value for each pixel in the array. The ADC output passes through a digital Control Registers Active Pixel Sensor (APS) Array PLL Memory OTPM Temperature sensor Timing and Control (Sequencer) Analog Processing and A/D Conversion Auto Exposure and Stats Engine Pixel Data Path (Signal Processing) External Clock Serial Output Flash Parallel Output Two-Wire Serial Interface Trigger Power |
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