Datasheet

PIC12(L)F1840
DS41441C-page 210  2011-2012 Microchip Technology Inc.
FIGURE 25-7: SPI DAISY-CHAIN CONNECTION
FIGURE 25-8: 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
SSP1IF
Interrupt
CKE =
0)
CKE =
0)
Write to
SSP1BUF
SSP1SR to
SSP1BUF
SS
Flag
bit 0
bit 7
bit 0
bit 6
SSP1BUF to
SSP1SR
Shift register SSP1SR
and bit count are reset