RM0402 Rev 6 723/1163
RM0402 Inter-integrated circuit (I
2
C) interface
757
24 Inter-integrated circuit (I
2
C) interface
24.1 I
2
C introduction
I
2
C (inter-integrated circuit) bus Interface serves as an interface 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 the standard mode (Sm, up to 100
kHz) and Fm mode (Fm, up to 400 kHz).
It may be used for a variety of purposes, including CRC generation and verification, SMBus
(system management bus) and PMBus (power management bus).
Depending on specific device implementation DMA capability can be available for reduced
CPU overload.
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