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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STMPE811 датащи(PDF) 15 Page - STMicroelectronics |
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STMPE811 датащи(HTML) 15 Page - STMicroelectronics |
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15 / 64 page  STMPE811 SPI interface Doc ID 14489 Rev 2 15/64 5.1.2 Register write The following steps need to be followed for register write through SPI. 1. Assert CS_n by driving a '0' on this pin. 2. Drive a '0' on the first SCL launch clock on MOSI to select a write operation. 3. The next 7 bits on MOSI denote the 7-bit register address (MSB first). 4. The next byte on the MOSI denotes data to be written. 5. The following transmissions on MOSI are considered byte-sized data. The register address to which the following data is written depends on whether the autoincrement bit in the SPICON register is set. If this bit has been set previously, the register address is incremented for data writes. 5.1.3 Termination of data transfer A transfer can be terminated before the last launch edge by deasserting the CS_n signal. If the last launch clock is detected, it is assumed that the data transfer is successful. |
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