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PCF8574DGVR Datasheet(PDF) 9 Page - Texas Instruments |
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PCF8574DGVR Datasheet(HTML) 9 Page - Texas Instruments |
9 / 23 page www.ti.com A A A A S 0 1 0 0 A1 A2 A0 1 Data 1 1 P Data 3 Start Condition Acknowledge From Slave Acknowledge From Slave Data From Port Data From Port Slave Address R/W 8 7 6 5 4 3 2 1 tir tir tsps tiv Data 1 Data 2 Data 3 INT Data Into Port B B A A Pn INT R/W A tir 0.7 × VCC 0.3 × VCC 0.7 × VCC 0.3 × VCC 0.7 × VCC 0.3 × VCC 0.7 × VCC 0.3 × VCC INT SCL View B−B View A−A tiv W A 0.7 × VCC 0.3 × VCC SCL D tpv Slave Acknowledge Unstable Data Last Stable Bit SDA Pn PCF8574 REMOTE 8-BIT I/O EXPANDER FOR I2C BUS SCPS068F – JULY 2001 – REVISED OCTOBER 2006 PARAMETER MEASUREMENT INFORMATION (continued) Figure 4. Interrupt Voltage Waveforms Figure 5. I2C Write Voltage Waveforms 9 Submit Documentation Feedback |
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