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L99PD08 数据表(PDF) 23 Page - STMicroelectronics |
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L99PD08 数据表(HTML) 23 Page - STMicroelectronics |
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23 / 41 page ![]() L99PD08 SPI Doc ID 15872 Rev 3 23/41 6.1 SPI timing parameter definition Figure 8. SPI timing diagram 6.2 Functional description of the SPI This device uses a 16 bit SPI slave protocol structured according to the ST SPI Standard to communicate with a microcontroller. tHCSN Minimum CSN high time 5 µs tSSCK SCK setup time before NCS rising 50 ns Table 17. Dynamic characteristics (continued) Symbol Parameter Test condition Min Typ Max Unit CSN SDO Data out tCSNQT tSCKQV SCK Data out tHSCK tLSCK tSCSN tHCSN Data in Data in tSSDI SDI tCSNQV tSSCK Table 18. CSN timeout/CLK_INx timings Symbol Parameter Test condition Min Typ Max Unit tCSN_TIMEOUT CSN timeout 50ms 50 72 ms CSN timeout 100ms 100 145 ms CSN timeout 200ms 200 285 ms CSN timeout 400ms 400 570 ms fFAIL CLK_INx fail detected 4.8 5.0 6.2 kHz fOK_ CLK_INx ok detected 5.2 7.0 9.2 kHz fCLK_INx CLK_INx frequency range 102.4 kHz |
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