Datasheet
© 2008 Microchip Technology Inc. DS39631E-page 121
PIC18F2420/2520/4420/4520
FIGURE 10-3: PARALLEL SLAVE PORT WRITE WAVEFORMS
FIGURE 10-4: PARALLEL SLAVE PORT READ WAVEFORMS
TABLE 10-11: REGISTERS ASSOCIATED WITH PARALLEL SLAVE PORT
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reset
Values
on page
PORTD RD7 RD6 RD5 RD4 RD3 RD2 RD1 RD0 52
LATD PORTD Data Latch Register (Read and Write to Data Latch) 52
TRISD PORTD Data Direction Register 52
PORTE
— — — — RE3 RE2 RE1 RE0 52
LATE — — — — — LATE Data Latch Register 52
TRISE IBF OBF IBOV PSPMODE
— TRISE2 TRISE1 TRISE0 52
INTCON GIE/GIEH PEIE/GIEL
TMR0IF INT0IE RBIE TMR0IF INT0IF RBIF 49
PIR1 PSPIF ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 52
PIE1 PSPIE
ADIE RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 52
IPR1 PSPIP
ADIP RCIP TXIP SSPIP CCP1IP TMR2IP TMR1IP 52
ADCON1 — — VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0 51
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the 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>