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STE2004S Datasheet(PDF) 35 Page - STMicroelectronics |
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STE2004S Datasheet(HTML) 35 Page - STMicroelectronics |
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35 / 79 page  STE2004S Bus interfaces 35/79 Figure 36.. SDOUT is in high impedance in steady state and during data write. It is possible to short circuit SDOUT and SDIN and read the I2C address or status byte without any additional lines. Figure 34. 4-lines serial bus protocol - one byte transmission Figure 35. 4-lines serial bus protocol - several byte transmission Figure 36. 4-lines serial bus protocol - I2C address or status byte read MSB LSB D/C CS SDIN SCLK LR0071 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 DB7 DB6 DB5 D/C CS SDIN SCLK LR0072 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Don't Care CS SDIN SCLK High-Z DB1 DB0 High-Z Don't Care Don't Care Don't Care Don't Care Don't Care Don't Care Don't Care Command Write DATA Read DB7 DB6 DB5 DB4 DB3 DB2 SDOUT High-Z DB1 DB0 High-Z DB7 DB6 DB5 DB4 DB3 DB2 ID Number STATUS BYTE LR00076 D/C |
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