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STMPE16M31 数据表(PDF) 17 Page - STMicroelectronics |
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STMPE16M31 数据表(HTML) 17 Page - STMicroelectronics |
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17 / 85 page  STMPE16M31, STMPE24M31 General call address Doc ID 16174 Rev 4 17/85 5 General call address A general call address is a transaction with the slave address of 0x00 and R/W = 0. When a general call address is made, the GPIO expander responds to this transaction with an acknowledgement and behaves as a slave-receiver mode. The meaning of a general call address is defined in the second byte sent by the master-transmitter. Note: All other second byte values will be ignored. Note: Please allow a gap of approximately 2 µs gap before the next I2C transaction after the General Call of 0x04 or 0x06. Table 7. Definition of the second byte of the I2C transaction R/W Second byte value Definition 0 0x06 2-byte transaction in which the second byte tells the slave device to perform a soft reset and write (or latch in) the 2-bit programmable part of the slave address. 0 0x04 2-byte transaction in which the second byte tells the slave device not to perform a soft reset and write (or latch in) the 2-bit programmable part of the slave address. 0 0x00 Not allowed as second byte. Obsolete Product(s) - Obsolete Product(s) |
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