データシートサーチシステム |
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PYTHON480 データシート(PDF) 15 Page - ON Semiconductor |
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PYTHON480 データシート(HTML) 15 Page - ON Semiconductor |
15 / 69 page PYTHON 480 www.onsemi.com 15 Figure 14. Pipelined Shutter Operated in Slave Mode Reset N Exposure Time N Reset N+1 Exposure T im e N+1 Readout N−1 FOT FOT Readout N FOT Integration Time Handling Readout Handling ROT Line Readout External Trigger FOT FOT Triggered Global Shutter Mode In this mode, manual intervention is required to control both the integration time and the start of readout. After the integration time, indicated by a user controlled pin, the image core is read out. After this sequence, the sensor goes to an idle mode until a new user action is detected. The three main differences with the pipelined global shutter mode are: • Upon user action, one single image is read. • Normally, integration and readout are done sequentially. However, the user can control the sensor in such a way that two consecutive batches are overlapping, that is, having concurrent integration and readout. • Integration and readout is under user control through an external pin. This mode requires manual intervention for every frame. The pixel array is kept in reset state until requested. The triggered global mode can also be controlled in a master or in a slave mode. Master Mode In this mode, a rising edge on the synchronization pin is used to trigger the start of integration and readout. The integration time is defined by a register setting. The sensor autonomously integrates during this predefined time, after which the FOT starts and the image array is readout sequentially. A falling edge on the synchronization pin does not have any impact on the readout or integration and subsequent frames are started again for each rising edge. Figure 15 shows the relation between the external trigger signal and the exposure/readout timing. If a rising edge is applied on the external trigger before the exposure time and FOT of the previous frame is complete, it is ignored by the sensor. Figure 15. Triggered Shutter Operated in Master Mode Reset N Exposure Time N Reset N+1 Exposure Time N+1 Readout N-1 FOT FOT Readout N FOT Integration Time Handling Readout Handling ROT Line Readout External Trigger No effect on falling edge Register Controlled FOT FOT Slave Mode Integration time control is identical to the pipelined shutter slave mode. An external synchronization pin controls the start of integration. When it is de−asserted, the FOT starts. The analog value on the pixel diode is transferred to the pixel memory element and the image readout can start. A request for a new frame is started when the synchronization pin is asserted again. |
同様の部品番号 - PYTHON480 |
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同様の説明 - PYTHON480 |
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