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Figure 283. Transfer Sequence Flow For I2C Slave Transmitter, Nostretch = 0 - STMicroelectronics STM32WL5 Series Reference Manual

Advanced arm-based 32-bit mcus with sub-ghz radio solution
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Inter-integrated circuit (I2C) interface

Figure 283. Transfer sequence flow for I2C slave transmitter, NOSTRETCH = 0

1064/1450
Slave
transmission
Slave initialization
No
I2C_ISR.ADDR
=1?
Yes
Read ADDCODE and DIR in I2C_ISR
Optional: Set I2C_ISR.TXE = 1
Set I2C_ICR.ADDRCF
I2C_ISR.TXIS
=1?
Yes
Write I2C_TXDR.TXDATA
RM0453 Rev 5
SCL
stretched
No
RM0453
MS19851V2

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