Datasheet

 2010-2012 Microchip Technology Inc. DS41452C-page 179
PIC16(L)F1516/7/8/9
21.0 MASTER SYNCHRONOUS
SERIAL PORT (MSSP)
MODULE
21.1 Master SSP (MSSP) Module
Overview
The Master Synchronous Serial Port (MSSP) module is
a serial interface useful for communicating with other
peripheral or microcontroller devices. These peripheral
devices may be serial EEPROMs, shift registers, dis-
play drivers, A/D converters, etc. The MSSP module
can operate in one of two modes:
• Serial Peripheral Interface (SPI)
• Inter-Integrated Circuit (I
2
C™)
The SPI interface supports the following modes and
features:
•Master mode
• Slave mode
• Clock Parity
• Slave Select Synchronization (Slave mode only)
• Daisy-chain connection of slave devices
Figure 21-1 is a block diagram of the SPI interface
module.
FIGURE 21-1: MSSP BLOCK DIAGRAM (SPI MODE)
( )
Read Write
Data Bus
SSPSR Reg
SSPM<3:0>
bit 0
Shift
Clock
SS
Control
Enable
Edge
Select
Clock Select
TMR2 Output
2
Edge
Select
2 (CKP, CKE)
4
TRIS bit
SDO
SSPBUF Reg
SDI
SS
SCK
TOSC
Prescaler
4, 16, 64
Baud Rate
Generator
(SSPADD)
SCK_out
SDO_out