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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN4650 датащи(PDF) 95 Page - STMicroelectronics |
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AN4650 датащи(HTML) 95 Page - STMicroelectronics |
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95 / 102 page  DocID027415 Rev 1 95/102 AN4650 First-in first-out (FIFO) buffer 102 8.9 Temperature data in FIFO It is possible to store only temperature data as the 4th FIFO data set. To enable this feature: the bit TIMER_PEDO_FIFO_EN of the FIFO_CTRL2 register has to be set to 0; the bit FIFO_TEMP_EN of the CTRL4_C register has to be set to 1. Temperature samples (16-bit) are stored in FIFO in the 6-byte data format shown in Table 76: Follow these steps to store 16-bit temperature data in the FIFO using the internal trigger (accelerometer/gyroscope data ready): 1. Turn on the accelerometer or the gyroscope; 2. Choose the decimation factor (different from 000b) for the 4th FIFO data set through the DEC_DS4_FIFO[2:0] bits in the FIFO_CTRL4 register; 3. Set to 1 the FIFO_TEMP_EN bit in the CTRL4_C register and to 0 the bit TIMER_PEDO_FIFO_EN of the FIFO_CTRL2 register; 4. Choose the FIFO ODR through the ODR_FIFO_[3:0] bits of the FIFO_CTRL5 register; 5. Configure the FIFO operating mode through the FIFO_MODE_[2:0] field of the FIFO_CTRL5 register. Table 76. Temperature data in FIFO Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 - - TEMP [7:0] TEMP [15:8] - - |
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