PIC 16F877 I2C Introduction

Most of PIC controllers specially 16F and 18F series have onchip I2C Modules. In this section of tutorial we are going to talk about PIC16F877A I2C Module and all derivatives of PIC has same module i.e. similar registers to configure. Lets take a look at the important registers which are to be configured to make I2C modules active and running on a PIC microcontroller.

For I2C master mode, there are three important register are to be configured

  • SSPSTAT: MSSP Status Register
  • SSPCON1: MSSP Control Register 1
  • SSPCON2: MSSP Control Register 2

SSPSTAT:

SSPCON1:

SSPCON2:

Baudrate Generator

In I2C Master mode, the Baud Rate Generator (BRG) reload value is placed in the lower 7 bits of the SSPADD register (Figure 9-17). When a write occurs to SSPBUF, the Baud Rate Generator will automatically begin counting. The BRG counts down to 0 and stops until another reload has taken place. In I2C Master mode, the BRG is reloaded automatically.

PIC16F877A - SSPADD as baudrate generator

Conversation

ExperimenterUK
Sat Sep 13 2014, 12:34 PM
jaimin1212,Pimpalkhare Create a thread for your question
jaimin1212
Sat Sep 13 2014, 02:35 AM
i want to make self balancing robot using MPU6050 using atmega8.. please help to get data of gyro and accelerometer from this sensor through atmega8.
Thu Sep 11 2014, 09:00 AM
Sunil Pimpalkhare
Hello sir, I am trying to make Wearfin project https://www.youtube.com/watch?v=iZ6PVBvQf-g so can u help me in teaching how to built the program???
Thu Sep 11 2014, 02:21 AM
hariom panday
plz hlp me in my project
iec.naga
Tue Sep 09 2014, 01:19 AM
spi
Mon Sep 08 2014, 08:14 AM
fameem
water changing in fish tank automatically using microcontoller with timer. send idea to me
dexter_a
Sat Sep 06 2014, 11:09 AM
hello guys
Sat Sep 06 2014, 10:10 AM
munaxa
plx guide me
Sat Sep 06 2014, 10:09 AM
munaxa
hi i want to buy plx guie me
ajay_bhargav
Sat Sep 06 2014, 03:10 AM
@Ben, Its hard to undrstand the context like this. If you can post in forum with some example code we might answer you better.

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deepbhadani
Fri Sep 19 2014, 01:08 PM
desaiakshay92
Fri Sep 19 2014, 12:45 AM
Fiddu
Thu Sep 18 2014, 02:28 AM
piku_123
Tue Sep 16 2014, 11:29 AM
qudor
Tue Sep 16 2014, 11:06 AM
sara_seecs
Tue Sep 16 2014, 10:53 AM
akshar
Fri Sep 12 2014, 12:45 PM
iec.naga
Tue Sep 09 2014, 01:09 AM

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