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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M25PE20 датащи(PDF) 6 Page - STMicroelectronics |
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M25PE20 датащи(HTML) 6 Page - STMicroelectronics |
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6 / 37 page  M25PE10, M25PE20 6/37 SPI MODES These devices can be driven by a microcontroller with its SPI peripheral running in either of the two following modes: – CPOL=0, CPHA=0 – CPOL=1, CPHA=1 For these two modes, input data is latched in on the rising edge of Serial Clock (C), and output data is available from the falling edge of Serial Clock (C). The difference between the two modes, as shown in Figure 5., is the clock polarity when the bus master is in Standby mode and not transferring da- ta: – C remains at 0 for (CPOL=0, CPHA=0) – C remains at 1 for (CPOL=1, CPHA=1) Figure 4. Bus Master and Memory Devices on the SPI Bus Note: The Top Sector Lock (TSL) signal should be driven, High or Low as appropriate. Figure 5. SPI Modes Supported AI10741B Bus Master (ST6, ST7, ST9, ST10, Others) SPI Memory Device SDO SDI SCK CQD S SPI Memory Device CQD S SPI Memory Device CQD S CS3 CS2 CS1 SPI Interface with (CPOL, CPHA) = (0, 0) or (1, 1) TSL RP TSL RP TSL RP AI01438B C MSB CPHA D 0 1 CPOL 0 1 Q C MSB |
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