PIC18LF4331 datasheet(214/392 Pages) MICROCHIP

Part #	PIC18LF4331

Description	28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PDF	392 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

Logo

214 / 392 page

PIC18F2331/2431/4331/4431

DS39616D-page 214

 2010 Microchip Technology Inc.

19.3.1.2

Reception

When the R/W bit of the address byte is clear and an

address match occurs, the R/W bit of the SSPSTAT

the SSPBUF register.

When the address byte overflow condition exists, then

the no Acknowledge (ACK) pulse is given. An overflow

condition is defined as either bit BF (SSPSTAT<0>) is

set, or bit SSPOV (SSPCON<6>) is set. This is an error

condition due to the user’s firmware.

An SSP interrupt is generated for each data transfer

byte. Flag bit, SSPIF (PIR1<3>), must be cleared in

software. The SSPSTAT register is used to determine

the status of the byte.

FIGURE 19-6:

I2C™ WAVEFORMS FOR RECEPTION (7-BIT ADDRESS)

A7 A6 A5 A4 A3 A2 A1

SDA

SCL

Bus master

terminates

transfer

SSPOV bit is set because the SSPBUF register is still full

Cleared in software

SSPBUF register is read

ACK

Receiving Data

ACK

R/W = 0

Receiving Address

SSPIF (PIR1<3>)

BF (SSPSTAT<0>)

SSPOV (SSPCON<6>)

ACK

ACK is not sent

PIC18LF4331 Datasheet(PDF) 214 Page - Microchip Technology