PIC32MX1XX Datasheet, PDF (173/320 Pages) Microchip Technology – 32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

17.0 INTER-INTEGRATED
CIRCUIT™ (I²C™)
Note 1: This data sheet summarizes the features
of the PIC32MX1XX/2XX family of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 24. “Inter-
Integrated Circuit™ (I²C™)” (DS61116)
in the “PIC32 Family Reference Manual”,
which is available from the Microchip web
site (www.microchip.com/PIC32).
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization” in
this data sheet for device-specific register
and bit information.
PIC32MX1XX/2XX
The I²C module provides complete hardware support
for both Slave and Multi-Master modes of the I²C serial
communication standard. Figure 17-1 illustrates the
I²C module block diagram.
Each I²C module has a 2-pin interface: the SCLx pin is
clock and the SDAx pin is data.
Each I²C module offers the following key features:
• I²C interface supporting both master and slave
operation
• I²C Slave mode supports 7-bit and 10-bit addressing
• I²C Master mode supports 7-bit and 10-bit
addressing
• I²C port allows bidirectional transfers between
master and slaves
• Serial clock synchronization for the I²C port can
be used as a handshake mechanism to suspend
and resume serial transfer (SCLREL control)
• I²C supports multi-master operation; detects bus
collision and arbitrates accordingly
• Provides support for address bit masking
© 2011-2012 Microchip Technology Inc.
Preliminary
DS61168D-page 173