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STMPE1208S bảng dữ liệu(PDF) 11 Page - STMicroelectronics |
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STMPE1208S bảng dữ liệu(HTML) 11 Page - STMicroelectronics |
11 / 51 page STMPE1208S I2C interface 11/51 Data Input The device samples the data input on SDATA on the rising edge of the SCLK. The SDATA signal must be stable during the rising edge of SCLK and the SDATA signal must change only when SCLK is driven low. Slave device address The slave device address is a 7 or 10-bit address, where the least significant 3-bit are programmable. These 3-bit values will be loaded in once upon reset and after that these 3 pins no longer be needed with the exception during General Call. Up to 4 STMPE1208S devices can be connected on a single I2C bus. Memory addressing For the bus master to communicate to the slave device, the bus master must initiate a Start condition and followed by the slave device address. Accompanying the slave device address, there is a Read/ bit (R/ ). The bit is set to 1 for read and 0 for write operation. If a match occurs on the slave device address, the corresponding device gives an acknowledgement on the SDA during the 9th bit time. If there is no match, it deselects itself from the bus by not responding to the transaction. Table 5. Operation modes Mode Byte 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 an address auto- increment, then the register address auto-increments internally after every byte of data being read. For those register addresses that fall within a non-incremental address range, the address will be kept static throughout the entire write 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 the register address auto-increments internally after every byte of data being written in. For those register addresses that fall within a non-incremental address range, the address will be kept static throughout the entire write operations. Refer to the memory map table for the address ranges that are auto and non-increment. |
Số phần tương tự - STMPE1208S_08 |
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Mô tả tương tự - STMPE1208S_08 |
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