Datasheet

 2011 Microchip Technology Inc. DS41391D-page 267
PIC16(L)F1826/27
FIGURE 25-28: I
2
C MASTER MODE WAVEFORM (TRANSMISSION, 7 OR 10-BIT ADDRESS)
SDAx SCLx SSPxIF BF (SSPxSTAT<0>) SEN
A7 A6 A5 A4 A3 A2 A1 ACK
= 0 D7 D6 D5 D4 D3 D2 D1 D0
ACK
Transmitting Data or Second Half
R/W = 0Transmit Address to Slave
123456789 123456789
P
Cleared by software service routine
SSPxBUF is written by software
from SSPx interrupt
After Start condition, SEN cleared by hardware
S
SSPxBUF written with 7-bit address and R/W
start transmit
SCLx held low
while CPU
responds to SSPxIF
SEN = 0
of 10-bit Address
Write SSPxCON2<0> SEN = 1 Start condition begins
From slave, clear ACKSTAT bit SSPxCON2<6>
ACKSTAT in SSPxCON2 = 1
Cleared by software
SSPxBUF written
PEN
R/W
Cleared by software