PIC18F44J50-I Datasheet, PDF (269/562 Pages) Microchip Technology – 28/44-Pin, Low-Power, High-Performance USB Microcontrollers

PIC18F46J50 FAMILY
19.0 MASTER SYNCHRONOUS
SERIAL PORT (MSSP)
MODULE
The Master Synchronous Serial Port (MSSP) module is
a serial interface, useful for communicating with other
peripheral or microcontroller devices. These peripheral
devices include serial EEPROMs, shift registers,
display drivers, ADCs, DACs and many other types of
integrated circuits.
19.1 Master SSP (MSSP) Module
Overview
The MSSP module can operate in one of two modes:
• Serial Peripheral Interface (SPI)
• Inter-Integrated Circuit (I²C™)
- Full Master mode
- Slave mode (with general address call)
The I²C interface supports the following modes in
hardware:
• Master mode
• Multi-Master mode
• Slave mode with 5-bit and 7-bit address masking
(with address masking for both 10-bit and 7-bit
addressing)
All members of the PIC18F46J50 family have two
MSSP modules, designated as MSSP1 and MSSP2.
The modules operate independently:
• PIC18F4XJ50 devices – Both modules can be
configured for either I²C or SPI communication
• PIC18F2XJ50 devices:
- MSSP1 can be used for either I²C or SPI
communication
- MSSP2 can be used only for SPI
communication
All of the MSSP1 module-related SPI and I²C I/O
functions are hard-mapped to specific I/O pins.
For MSSP2 functions:
• SPI I/O functions (SDO2, SDI2, SCK2 and SS2)
are all routed through the Peripheral Pin Select
(PPS) module.
These functions may be configured to use any of
the RPn remappable pins, as described in
Section 10.7 “Peripheral Pin Select (PPS)”.
• I²C functions (SCL2 and SDA2) have fixed pin
locations.
On all PIC18F46J50 family devices, the SPI DMA
capability can only be used in conjunction with MSSP2.
The SPI DMA feature is described in Section 19.4
“SPI DMA Module”.
Note:
Throughout this section, generic refer-
ences to an MSSP module in any of its
operating modes may be interpreted as
being equally applicable to MSSP1 or
MSSP2. Register names and module I/O
signals use the generic designator ‘x’ to
indicate the use of a numeral to distin-
guish a particular module when required.
Control bit names are not individuated.
 2011 Microchip Technology Inc.
DS39931D-page 269