STMicroelectronics STM32WL5 Series User Manual

RM0453 Rev 5 1079/1450
RM0453 Inter-integrated circuit (I2C) interface
1113
Figure 297. Transfer sequence flow for I2C master receiver for N > 255 bytes
MS19864V2
Master initialization
Master reception
Read I2C_RXDR
I2C_ISR.RXNE
=1?
No
Yes
NBYTES = 0xFF; N=N-255
RELOAD =1
Configure slave address
Set I2C_CR2.START
NBYTES
received?
I2C_ISR.TC =
1?
Yes
End
No
Yes
No
Set I2C_CR2.START with
slave addess NBYTES ...
I2C_ISR.TCR
= 1?
Yes
IF N< 256
NBYTES =N; N=0;RELOAD=0
AUTOEND=0 for RESTART; 1 for STOP
ELSE
NBYTES =0xFF;N=N-255
RELOAD=1
No

STMicroelectronics STM32WL5 Series Specifications

General

Brand	STMicroelectronics
Model	STM32WL5 Series
Category	Microcontrollers
Language	English