Datasheet
PIC18F2XK20/4XK20
DS41303G-page 210 2010 Microchip Technology Inc.
FIGURE 17-9: I
2
C™ SLAVE MODE TIMING (TRANSMISSION, 7-BIT ADDRESS)
SDA
SCL
SSPIF (PIR1<3>)
BF (SSPSTAT<0>)
A6
A5
A4 A3
A2
A1
D6
D5
D4
D3
D2
D1
D0
1 2 3 4 5 6 7 8 2 3 4 5 6 7 8 9
SSPBUF is written by software
Cleared by software
From SSPIF ISR
Data in
sampled
S
ACK
Transmitting Data
R/W = 0
ACK
Receiving Address
A7 D7
9 1
D6
D5
D4
D3
D2
D1
D0
2 3 4 5 6 7 8 9
SSPBUF is written by software
Cleared by software
From SSPIF ISR
Transmitting Data
D7
1
CKP
P
ACK
CKP is set by software
CKP is set by software
SCL held low
while CPU
responds to SSPIF