Datasheet

© 2007 Microchip Technology Inc. DS39599G-page 115
PIC18F2220/2320/4220/4320
FIGURE 10-16: PARALLEL SLAVE PORT WRITE WAVEFORMS
FIGURE 10-17: PARALLEL SLAVE PORT READ WAVEFORMS
TABLE 10-11: REGISTERS ASSOCIATED WITH PARALLEL SLAVE PORT
Q1 Q2 Q3 Q4
CS
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
WR
RD
IBF
OBF
PSPIF
PORTD<7:0>
Q1 Q2 Q3 Q4
CS
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
WR
IBF
PSPIF
RD
OBF
PORTD<7:0>
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value on
POR, BOR
Value on
all other
Resets
PORTD Port Data Latch when written; Port pins when read xxxx xxxx uuuu uuuu
LATD LATD Data Latch bits xxxx xxxx uuuu uuuu
TRISD PORTD Data Direction bits 1111 1111 1111 1111
PORTE
— — — — RE3 RE2 RE1 RE0 ---- qxxx ---- quuu
LATE
— — — — — LATE Data Latch bits ---- -xxx ---- -uuu
TRISE IBF OBF IBOV PSPMODE
— PORTE Data Direction bits 0000 -111 0000 -111
INTCON GIE/
GIEH
PEIE/
GIEL
TMR0IF INT0IE RBIE TMR0IF INT0IF RBIF 0000 000x 0000 000u
PIR1 PSPIF
ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000
PIE1 PSPIE
ADIE RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000
IPR1 PSPIP
ADIP RCIP TXIP SSPIP CCP1IP TMR2IP TMR1IP 1111 1111 1111 1111
ADCON1
— — VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0 --00 0000 --00 0000
Legend: x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by the Parallel Slave Port.