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2011-2015 Microchip Technology Inc.
DS40001609E-page 179
PIC16(L)F1508/9
FIGURE 21-9:
SPI MODE WAVEFORM (SLAVE MODE WITH CKE =
0
)
FIGURE 21-10:
SPI MODE WAVEFORM (SLAVE MODE WITH CKE =
1
)
SCKx
(CKP =
1
SCKx
(CKP =
0
Input
Sample
SDIx
bit 7
SDOx
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
SSPxIF
Interrupt
CKE =
0
)
CKE =
0
)
Write to
SSPxBUF
SSPxSR to
SSPxBUF
SSx
Flag
Optional
bit 0
detection active
Write Collision
Valid
SCKx
(CKP =
1
SCKx
(CKP =
0
Input
Sample
SDIx
bit 7
bit 0
SDOx
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
SSPxIF
Interrupt
CKE =
1
)
CKE =
1
)
Write to
SSPxBUF
SSPxSR to
SSPxBUF
SSx
Flag
Not Optional
Write Collision
detection active
Valid