PIC32MX320F032H_11 Datasheet, PDF (113/214 Pages) Microchip Technology – High-Performance, General Purpose and USB, 32-bit Flash Microcontrollers

18.0 INTER-INTEGRATED
CIRCUIT™ (I²C™)
Note 1: This data sheet summarizes the features
of the PIC32MX3XX/4XX family of
devices. It is not intended to be a compre-
hensive reference source. To comple-
ment the information in this data sheet,
refer to Section 24. “Inter-Integrated
Circuit (I²C™)” (DS61116) of 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.
The I²C module provides complete hardware support
for both Slave and Multi-Master modes of the I²C serial
communication standard. Figure 18-1 illustrates the I²C
module block diagram.
PIC32MX3XX/4XX
The PIC32MX3XX/4XX devices have up to two I²C
interface modules, denoted as I2C1 and I2C2. Each
I²C module has a 2-pin interface: the SCLx pin is clock
and the SDAx pin is data.
Each I²C module, ‘I2Cx’ (x = 1 or 2), offers the following
key features:
• I²C Interface Supporting both Master and Slave
Operation.
• I²C Slave Mode Supports 7 and 10-bit Address.
• I²C Master Mode Supports 7 and 10-bit Address.
• I²C Port allows Bidirectional Transfers between
Master and Slaves.
• Serial Clock Synchronization for 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 Microchip Technology Inc.
DS61143H-page 113