STCN75_08 Datasheet, PDF (22/35 Pages) STMicroelectronics – Digital temperature sensor and thermal watchdog

Functional description
STCN75
Figure 8. Typical 2-byte READ from preset pointer location (e.g. temp - T_OS, T_HYS)
1
91
91
9
1
Start
by
Master
0 0 1 A2 A1 A0 R/W
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Address Byte
Most Significant Data Byte
ACK
by
STCN75
Least Significant Data Byte
ACK
by
Master
Stop
Cond.
No ACK by
by Master
Master
AI12227
Figure 9. Typical pointer set followed by an immediate READ for 2-byte register (e.g. temp)
1
91
9
1 0 0 1 A2 A1 A0 R/W
0 0 0 0 0 0 D1 D0
Start
by
Master
Address Byte
ACK
by
STCN75
Pointer Byte
ACK
by
STCN75
1
91
91
9
1
Repeat
Start
by
Master
0 0 1 A2 A1 A0 R/W
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Address Byte
Most Significant Data Byte
ACK
by
STCN75
Least Significant Data Byte
ACK
by
Master
No ACK
by
Master
Stop
Cond.
by
Master
AI12228
Figure 10. Typical 1-byte READ from the cofiguration register with preset pointer
1
91
9
1
Start
by
Master
0 0 1 A2 A1 A0 R/W
D7 D6 D5 D4 D3 D2 D1 D0
Address Byte
ACK
by
STCN75
Data Byte
No ACK
by
Master
Stop
Cond.
by
Master
AI12229
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