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ILPS28QSW Arkusz danych(PDF) 25 Page - STMicroelectronics

Numer części ILPS28QSW
Szczegółowy opis  Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with Qvar detection in a water-resistant package
PDF  52 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ILPS28QSW Arkusz danych(HTML) 25 Page - STMicroelectronics

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Table 14. SAD+read/write patterns
Command
SAD[6:0]
R/W
SAD + R/W
Read
1011100
1
10111001 (B9h)
Write
1011100
0
10111000 (B8h)
Table 15. Transfer when master is writing one byte to slave
Master
ST
SAD+ W
SUB
DATA
SP
Slave
SAK
SAK
SAK
Table 16. Transfer when master is writing multiple bytes to slave
Master
ST
SAD+ W
SUB
DATA
DATA
SP
Slave
SAK
SAK
SAK
SAK
Table 17. Transfer when master is receiving (reading) one byte of data from slave
Master
ST
SAD+ W
SUB
SR
SAD+ R
NMAK
SP
Slave
SAK
SAK
SAK
DATA
Table 18. Transfer when master is receiving (reading) multiple bytes of data from slave
Master
ST
SAD+
W
SUB
SR
SAD+
R
MAK
MAK
NMAK
SP
Slave
SAK
SAK
SAK
DATA
DATA
DATA
Data are transmitted in byte format (DATA). Each data transfer contains 8 bits. The number of bytes transferred
per transfer is unlimited. Data is transferred with the most significant bit (MSb) first. If a slave receiver does not
acknowledge the slave address (that is, it is not able to receive because it is performing some real-time function),
the data line must be kept high by the slave. The master can then abort the transfer. A low to high transition on
the SDA line while the SCL line is high is defined as a stop condition. Each data transfer must be terminated by
the generation of a stop (SP) condition.
In the presented communication format MAK is master acknowledge and NMAK is no master acknowledge.
ILPS28QSW
I²C serial interface
DS13905 - Rev 1
page 25/52



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