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STMPE1601 Datasheet(PDF) 14 Page - STMicroelectronics |
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STMPE1601 Datasheet(HTML) 14 Page - STMicroelectronics |
14 / 58 page I2C interface STMPE1601 14/58 6.7 Operating modes Figure 3. I2C transaction Table 13. Operating modes Mode Bytes Programming sequence Read ≥1 START, Device address, R/W = 0, Register address to be read reSTART, Device address, R/W = 1, Data Read, STOP If no STOP is issued, the Data Read can be continuously performed. If the register address falls within the range that allows address auto- increment, then register address auto-increments internally after every byte of data being read. For register address that falls within a non- incremental address range, the address will be kept static throughout the entire read operations. Refer to the Memory Map table for the address ranges that are auto and non-increment. An example of such a non-increment address is FIFO. Write ≥1 START, Device address, R/W = 0, Register address to be written, Data Write, STOP. If no STOP is issued, the Data Write can be continuously performed. If the register address falls within the range that allows address auto- increment, then register address auto-increments internally after every byte of data being written. For those register addresses that fall within a non-incremental address range, the address will be kept static throughout the all write operations. Refer to the memory map table for the address ranges that are auto and non-increment. An example of a non-increment address is Data Port for initializing the PWM commands. Device Address Reg Address Device Address Data Read One byte Read Device Address Reg Address Device Address Data Read More than one byte Read Data Read + 1 Data Read + 2 Device Address Reg Address Data to be written One byte Write More than one byte Read Device Address Reg Address Data to Write Data to Write + 2 Data to Write + 1 Master Slave |
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