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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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QST104 датащи(PDF) 43 Page - STMicroelectronics |
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QST104 датащи(HTML) 43 Page - STMicroelectronics |
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43 / 45 page  QST104 Device revision information 43/45 9 Device revision information 9.1 Device revision identification The marking on the right side of the second line (Line B) of the package top face identifies the device revision. Figure 22. Device revision identification (TQFP package) The device revision can also be obtained using the GET_DEVICE_INFO I2C command. For more information, refer to Section 4.9: Supported commands on page 16. 9.2 Device revision history This section identifies the device deviations from the present specification for each device revision. 9.2.1 Revision 1.0 When the device enters low power mode, an additional sleep time is inserted after each burst, instead of once after every complete burst cycle. As a result, if only one burst is required, the sleep duration during low power mode is doubled. And if two bursts are required, the sleep duration is tripled. In standalone mode, the 100ms sleep duration low power becomes either a 200ms or 300ms sleep duration depending on the number of bursts required. In I2C mode, it is required to program a sleep duration for one half or a third of the desired sleep duration depending on the number of bursts required. GET_PROTOCOL_VERSION returns 0x01 as I2CSpeed byte while it should return 0x00 (maximum speed is 100 kHz). Table 34. Device revision identification Marking Device revision H00 V 1.0 QST104 QRG H00 A B C DE FG H I J K a |
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