STMicroelectronics STM32F405

Inter-integrated circuit (I
2
C) interface RM0090
832/1731 DocID018909 Rev 11
Figure 239. I
2
C block diagram for STM32F40x/41x
Data shift register
Comparator
Own address register
Clock control
Status registers
Control registers
Control
Clock
control
Data
control
SCL
logic
Dual address register
Data register
PEC register
Interrupts
PEC calculation
SMBA
SDA
Register (CCR)
(SR1&SR2)
(CR1&CR2)
DMA requests & ACK