
2009 Microchip Technology Inc.
DS39636D-page 113
PIC18F2X1X/4X1X
FIGURE 9-3:
PARALLEL SLAVE PORT WRITE WAVEFORMS
FIGURE 9-4:
PARALLEL SLAVE PORT READ WAVEFORMS
TABLE 9-11:
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
LATD
PORTD Data Latch Register (Read and Write to Data Latch)
TRISD
PORTD Data Direction Control Register
PORTE
—
RE3
RE2
RE1
RE0
LATE
—
LATE Data Output bits
TRISE
IBF
OBF
IBOV
PSPMODE
—
TRISE2
TRISE1
TRISE0
INTCON
GIE/GIEH PEIE/GIEL
TMR0IF
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
PIR1
PSPIF(1)
ADIF
RCIF
TXIF
SSPIF
CCP1IF
TMR2IF
TMR1IF
PIE1
PSPIE(1)
ADIE
RCIE
TXIE
SSPIE
CCP1IE
TMR2IE
TMR1IE
IPR1
PSPIP(1)
ADIP
RCIP
TXIP
SSPIP
CCP1IP
TMR2IP
TMR1IP
ADCON1
—
VCFG1
VCFG0
PCFG3
PCFG2
PCFG1
PCFG0
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the Parallel Slave Port.
Note 1: These bits are unimplemented on 28-pin devices and read as ‘0’.
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>