Datasheet
PIC16(L)F1824/1828
DS41419D-page 280 2010-2012 Microchip Technology Inc.
FIGURE 25-28: I
2
C MASTER MODE WAVEFORM (TRANSMISSION, 7 OR 10-BIT ADDRESS)
SDA
SCL
SSP1IF
BF (SSP1STAT<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
SSP1BUF is written by software
from SSP1 interrupt
After Start condition, SEN cleared by hardware
S
SSP1BUF written with 7-bit address and R/W
start transmit
SCL held low
while CPU
responds to SSP1IF
SEN = 0
of 10-bit Address
Write SSP1CON2<0> SEN = 1
Start condition begins
From slave, clear ACKSTAT bit SSP1CON2<6>
ACKSTAT in
SSP1CON2 = 1
Cleared by software
SSP1BUF written
PEN
R/W
Cleared by software