PIC16F722A Datasheet, PDF (158/284 Pages) Microchip Technology – 28-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16F/LF722A/723A
FIGURE 17-3:
Write to
SSPBUF
SCK
(CKP = 0
CKE = 0)
SCK
(CKP = 1
CKE = 0)
SCK
(CKP = 0
CKE = 1)
SCK
(CKP = 1
CKE = 1)
SDO
(CKE = 0)
SDO
(CKE = 1)
SDI
(SMP = 0)
Input
Sample
(SMP = 0)
SDI
(SMP = 1)
Input
Sample
(SMP = 1)
SSPIF
SSPSR to
SSPBUF
SPI MASTER MODE WAVEFORM
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
bit 7
bit 0
bit 7
bit 0
EXAMPLE 17-1: LOADING THE SSPBUF (SSPSR) REGISTER
LOOP
BANKSEL
BTFSS
GOTO
BANKSEL
MOVF
MOVWF
MOVF
MOVWF
SSPSTAT
SSPSTAT, BF
LOOP
SSPBUF
SSPBUF, W
RXDATA
TXDATA, W
SSPBUF
;
;Has data been received(transmit complete)?
;No
;
;WREG reg = contents of SSPBUF
;Save in user RAM, if data is meaningful
;W reg = contents of TXDATA
;New data to xmit
4 Clock
Modes
DS41417A-page 158
 2010 Microchip Technology Inc.