ST STM32F446 Series - Fast-Mode Plus Inter-Integrated Circuit (FMPI2 C) Interface; FMPI2 C Main Features; Introduction

Fast-mode Plus Inter-integrated circuit (FMPI2C) interface RM0390
692/1328 RM0390 Rev 4
23 Fast-mode Plus Inter-integrated circuit (FMPI2C)
interface
23.1 Introduction
The I
2
C (inter-integrated circuit) bus interface handles communications between the
microcontroller and the serial I
2
C bus. It provides multimaster capability, and controls all I
2
C
bus-specific sequencing, protocol, arbitration and timing. It supports Standard-mode (Sm),
Fast-mode (Fm) and Fast-mode Plus (Fm+).
It is also SMBus (system management bus) and PMBus (power management bus)
compatible.
DMA can be used to reduce CPU overload.
23.2 FMPI2C main features
• I
2
C bus specification rev03 compatibility:
– Slave and master modes
– Multimaster capability
– Standard-mode (up to 100 kHz)
– Fast-mode (up to 400 kHz)
– Fast-mode Plus (up to 1 MHz)
– 7-bit and 10-bit addressing mode
– Multiple 7-bit slave addresses (2 addresses, 1 with configurable mask)
– All 7-bit addresses acknowledge mode
– General call
– Programmable setup and hold times
– Easy to use event management
– Optional clock stretching
– Software reset
• 1-byte buffer with DMA capability
• Programmable analog and digital noise filters