Datasheet

 2001 Microchip Technology Inc. DS30292C-page 83
PIC16F87X
FIGURE 9-14: I
2
C MASTER MODE TIMING (TRANSMISSION, 7 OR 10-BIT ADDRESS)
SDA SCL SSPIF BF (SSPSTAT<0>) SEN
A7 A6 A5 A4 A3 A2 A1 ACK = 0 D7D6D5D4D3D2D1D0
ACK
Transmitting Data or Second Half
R/W
= 0Transmit Address to Slave
123456789 123456789
P
Cleared in software service routine
SSPBUF is written in software
From SSP interrupt
After START condition SEN, cleared by hardware.
S
SSPBUF written with 7-bit address and R/W
start transmit
SCL held low
while CPU
responds to SSPIF
SEN = 0
of 10-bit address
Write SSPCON2<0> SEN = 1 START condition begins
From slave clear ACKSTAT bit SSPCON2<6>
ACKSTAT in SSPCON2 = 1
Cleared in software
SSPBUF written
PEN
Cleared in software
R/W