PIC16F1825T-ESS datasheet(241/448 Pages) MICROCHIP

241 / 448 page

 2010-2012 Microchip Technology Inc.

DS41440C-page 241

PIC16(L)F1825/1829

25.0 MASTER SYNCHRONOUS

SERIAL PORT (MSSP1 AND

MSSP2) MODULE

25.1

Master SSPx (MSSPx) Module

Overview

The Master Synchronous Serial Port (MSSPx) module

is a serial interface useful for communicating with other

peripheral or microcontroller devices. These peripheral

devices may be serial EEPROMs, shift registers,

display drivers, A/D converters, etc. The MSSPx

module can operate in one of two modes:

• Serial Peripheral Interface (SPI)

• Inter-Integrated Circuit (I2C™)

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 25-1 is a block diagram of the SPI interface

module.

FIGURE 25-1:

MSSPx BLOCK DIAGRAM (SPI MODE)

(

)

Read

Write

Data Bus

SSPxSR Reg

SSPM<3:0>

bit 0

Shift

Clock

SSx Control

Enable

Edge

Select

Clock Select

TMR2 Output

Edge

Select

2 (CKP, CKE)

TRIS bit

SDOx

SSPxBUF Reg

SDIx

SSx

SCKx

TOSC

Prescaler

4, 16, 64

Baud Rate

Generator

(SSPxADD)

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