STMicroelectronics STM32WL5 Series User Manual

Inter-integrated circuit (I2C) interface RM0453
1076/1450 RM0453 Rev 5
Figure 295. Transfer bus diagrams for I2C master transmitter
(mandatory events only)
MS19862V2
Example I2C master transmitter 2 bytes, automatic end mode (STOP)
INIT: program Slave address, program NBYTES = 2, AUTOEND=1, set START
EV1: TXIS ISR: wr data1
EV2: TXIS ISR: wr data2
TXISTXIS
legend:
transmission
reception
SCL stretch
EV1 EV2
xx
2
INIT
Example I2C master transmitter 2 bytes, software end mode (RESTART)
INIT: program Slave address, program NBYTES = 2, AUTOEND=0, set START
EV1: TXIS ISR: wr data1
EV2: TXIS ISR: wr data2
EV3: TC ISR: program Slave address, program NBYTES = N, set START
TXIS TXIS
legend:
transmission
reception
SCL stretch
EV1 EV2
INIT
TC
TXE
TXE
EV3
NBYTES
NBYTES
2
xx
S Address A data1 A data2 ReS AddressA
S Address A data1 A data2 A P

STMicroelectronics STM32WL5 Series Specifications

General

Brand	STMicroelectronics
Model	STM32WL5 Series
Category	Microcontrollers
Language	English