Datasheet

PIC16C9XX
DS30444E - page 68  1997 Microchip Technology Inc.
FIGURE 11-7: SPI MODE TIMING (SLAVE MODE WITH CKE = 1)
TABLE 11-1: REGISTERS ASSOCIATED WITH SPI OPERATION
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value on
Power-on
Reset
Value on all
other resets
0Bh, 8Bh,
10Bh, 18Bh
INTCON GIE PEIE
T0IE INTE RBIE T0IF INTF RBIF 0000 000x 0000 000u
0Ch PIR1
LCDIF ADIF
(1)
— — SSPIF CCP1IF TMR2IF TMR1IF 00-- 0000 00-- 0000
8Ch PIE1 LCDIE ADIE
(1)
— — SSPIE CCP1IE TMR2IE TMR1IE 00-- 0000 00-- 0000
13h SSPBUF Synchronous Serial Port Receive Buffer/Transmit Register xxxx xxxx uuuu uuuu
14h SSPCON WCOL SSPOV SSPEN CKP SSPM3 SSPM2 SSPM1 SSPM0 0000 0000 0000 0000
85h TRISA — — PORTA Data Direction Control Register --11 1111 --11 1111
87h TRISC — — PORTC Data Direction Control Register --11 1111 --11 1111
94h SSPSTAT SMP CKE D/A P S R/W UA BF 0000 0000 0000 0000
Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by the SSP in SPI mode.
Note 1: Bits ADIE and ADIF are reserved on the PIC16C923, always maintain these bits clear.
SCK (CKP = 0)
SDI (SMP = 0)
SSPIF
bit7
bit6 bit5
bit4
bit3
bit2
bit1 bit0
SCK (CKP = 1)
SDO
bit7 bit0
SS
(not optional)