PIC16F1938 Datasheet, PDF (246/452 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers

PIC16(L)F1938/9
FIGURE 24-9:
SS
Optional
SCK
(CKP = 0
CKE = 0)
SCK
(CKP = 1
CKE = 0)
Write to
SSPBUF
Valid
SDO
SDI
Input
Sample
SSPIF
Interrupt
Flag
SSPSR to
SSPBUF
Write Collision
detection active
FIGURE 24-10:
SS
Not Optional
SCK
(CKP = 0
CKE = 1)
SCK
(CKP = 1
CKE = 1)
Write to
SSPBUF
Valid
SDO
SDI
Input
Sample
SPI MODE WAVEFORM (SLAVE MODE WITH CKE = 0)
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
bit 7
bit 0
SPI MODE WAVEFORM (SLAVE MODE WITH CKE = 1)
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
bit 7
bit 0
SSPIF
Interrupt
Flag
SSPSR to
SSPBUF
Write Collision
detection active
D41574A-page 246
Preliminary
 2011 Microchip Technology Inc.