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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TCS37715FN датащи(PDF) 18 Page - OSRAM GmbH |
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TCS37715FN датащи(HTML) 18 Page - OSRAM GmbH |
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18 / 49 page  ams Datasheet Page 17 [v1-31] 2018-Apr-04 Document Feedback TCS3771 − Principles of Operation RGBC Operation The RGBC engine contains RGBC gain control (AGAIN) and four integrating analog-to-digital converters (ADC) for the RGBC photodiodes. The RGBC integration time (ATIME) impacts both the resolution and the sensitivity of the RGBC reading. Integration of all four channels occurs simultaneously and upon completion of the conversion cycle, the results are transferred to the color data registers. This data is also referred to as channel count. The transfers are double-buffered to ensure that invalid data is not read during the transfer. After the transfer, the device automatically moves to the next state in accordance with the configured state machine. Figure 20: RGBC Operation The registers for programming the integration and wait times are a 2’s compliment values. The actual time can be calculated as follows: ATIME = 256 - Integration Time / 2.4ms Inversely, the time can be calculated from the register value as follows: Integration Time = 2.4ms × (256 - ATIME) For example, if a 100-ms integration time is needed, the device needs to be programmed to: 256 - (100 / 2.4) = 256 - 42 = 214 = 0xD6 Conversely, the programmed value of 0xC0 would correspond to: (256 - 0xC0) × 2.4 = 64 × 2.4 = 154ms |
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