Datasheet

 2011-2013 Microchip Technology Inc. DS40001574C-page 243
PIC16(L)F1938/9
FIGURE 24-7: SPI DAISY-CHAIN CONNECTION
FIGURE 24-8: SLAVE SELECT SYNCHRONOUS WAVEFORM
SPI Master
SCK
SDO
SDI
General I/O
SCK
SDI
SDO
SS
SPI Slave
#1
SCK
SDI
SDO
SS
SPI Slave
#2
SCK
SDI
SDO
SS
SPI Slave
#3
SCK
(CKP =
1
SCK
(CKP =
0
Input
Sample
SDI
bit 7
SDO
bit 7
bit 6 bit 7
SSPIF
Interrupt
CKE =
0)
CKE =
0)
Write to
SSPBUF
SSPSR to
SSPBUF
SS
Flag
bit 0
bit 7
bit 0
bit 6
SSPBUF to
SSPSR
Shift register SSPSR
and bit count are reset