Datasheet

PIC16(L)F1938/9
DS40001574C-page 244  2011-2013 Microchip Technology Inc.
FIGURE 24-9: SPI MODE WAVEFORM (SLAVE MODE WITH CKE = 0)
FIGURE 24-10: SPI MODE WAVEFORM (SLAVE MODE WITH CKE = 1)
SCK
(CKP =
1
SCK
(CKP =
0
Input
Sample
SDI
bit 7
SDO bit 7
bit 6
bit 5 bit 4
bit 3
bit 2
bit 1 bit 0
SSPIF
Interrupt
CKE =
0)
CKE =
0)
Write to
SSPBUF
SSPSR to
SSPBUF
SS
Flag
Optional
bit 0
detection active
Write Collision
Valid
SCK
(CKP =
1
SCK
(CKP =
0
Input
Sample
SDI
bit 7
bit 0
SDO bit 7
bit 6
bit 5 bit 4
bit 3 bit 2
bit 1 bit 0
SSPIF
Interrupt
CKE =
1)
CKE =
1)
Write to
SSPBUF
SSPSR to
SSPBUF
SS
Flag
Not Optional
Write Collision
detection active
Valid