Datasheet

PIC16C77X
 1999-2013 Microchip Technology Inc. Advance Information DS30275B-page 61
FIGURE 8-8: SPI SLAVE MODE WAVEFORM (CKE = 0)
FIGURE 8-9: SPI SLAVE MODE WAVEFORM (CKE = 1)
SCK
(CKP = 1
SCK
(CKP = 0
Input
Sample
SDI
bit7
bit0
SDO bit7
bit6
bit5 bit4
bit3
bit2
bit1 bit0
SSPIF
Interrupt
(SMP = 0)
CKE = 0)
CKE = 0)
(SMP = 0)
Write to
SSPBUF
SSPSR to
SSPBUF
SS
Flag
optional
Next Q4 cycle
after Q2
SCK
(CKP = 1
SCK
(CKP = 0
Input
Sample
SDI
bit7
bit0
SDO bit7
bit6
bit5 bit4
bit3
bit2
bit1 bit0
SSPIF
Interrupt
(SMP = 0)
CKE = 1)
CKE = 1)
(SMP = 0)
Write to
SSPBUF
SSPSR to
SSPBUF
SS
Flag
not optional
Next Q4 cycle
after Q2
774.book Page 61 Tuesday, January 29, 2013 12:02 PM