Datenblatt-Suchmaschine für elektronische Bauteile |
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STA326 Datenblatt(PDF) 9 Page - STMicroelectronics |
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STA326 Datenblatt(HTML) 9 Page - STMicroelectronics |
9 / 43 page 9/43 STA326 6.4 READ OPERATION 6.4.1 Current Address Byte Read Following the START condition the master sends a device select code with the RW bit set to 1. The STA326 acknowledges this and then responds by sending one byte of data. The master then terminates the transfer by generating a STOP condition. 6.4.1.1Current Address Multi-byte Read The multi-byte read modes can start from any internal address. Sequential data bytes will be read from sequential addresses within the STA326. The master acknowledges each data byte read and then gen- erates a STOP condition terminating the transfer. 6.4.2 Random Address Byte Read Following the START condition the master sends a device select code with the RW bit set to 0. The STA326 acknowledges this and then the master writes the internal address byte. After receiving, the in- ternal byte address the STA326 again responds with an acknowledgement. The master then initiates an- other START condition and sends the device select code with the RW bit set to 1. The STA326 acknowledges this and then responds by sending one byte of data. The master then terminates the trans- fer by generating a STOP condition. 6.4.2.1Random Address Multi-byte Read The multi-byte read modes could start from any internal address. Sequential data bytes will be read from sequential addresses within the STA326. The master acknowledges each data byte read and then gen- erates a STOP condition terminating the transfer. 6.5 Write Mode Sequence Figure 9. I2C Write Procedure 6.6 Read Mode Sequence Figure 10. I2C Read Procedure DEV-ADDR ACK START RW SUB-ADDR ACK DATA IN ACK STOP BYTE WRITE DEV-ADDR ACK START RW SUB-ADDR ACK DATA IN ACK STOP MULTIBYTE WRITE DATA IN ACK DEV-ADDR ACK START RW DATA NO ACK STOP CURRENT ADDRESS READ DEV-ADDR ACK START RW SUB-ADDR ACK DEV-ADDR ACK STOP RANDOM ADDRESS READ DATA NO ACK START RW DEV-ADDR ACK START DATA ACK DATA ACK STOP SEQUENTIAL CURRENT READ DATA NO ACK DEV-ADDR ACK START RW SUB-ADDR ACK DEV-ADDR ACK DEV-ADDR ACK START RW DATA NO ACK STOP CURRENT ADDRESS READ DEV-ADDR ACK START RW SUB-ADDR ACK DEV-ADDR ACK STOP RANDOM ADDRESS READ DATA NO ACK START RW DEV-ADDR ACK START DATA ACK DATA ACK STOP SEQUENTIAL CURRENT READ DATA NO ACK DEV-ADDR ACK START RW SUB-ADDR ACK DEV-ADDR ACK SEQUENTIAL RANDOM READ DATA ACK START RW DATA ACK NO ACK STOP DATA RW= HIGH |
Ähnliche Teilenummer - STA326 |
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Ähnliche Beschreibung - STA326 |
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