PIC16F87X Datasheet, PDF (41/218 Pages) Microchip Technology – 28/40-pin 8-Bit CMOS FLASH Microcontrollers

PIC16F87X
FIGURE 3-10:
PARALLEL SLAVE PORT WRITE WAVEFORMS
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
CS
WR
RD
PORTD<7:0>
IBF
OBF
PSPIF
FIGURE 3-11:
PARALLEL SLAVE PORT READ WAVEFORMS
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
CS
WR
RD
PORTD<7:0>
IBF
OBF
PSPIF
TABLE 3-11: REGISTERS ASSOCIATED WITH PARALLEL SLAVE PORT
Address 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
08h
PORTD Port Data Latch when written: Port pins when read
xxxx xxxx uuuu uuuu
09h
PORTE
—
—
—
—
—
RE2
RE1
RE0 ---- -xxx ---- -uuu
89h
TRISE
IBF OBF IBOV PSPMODE — PORTE Data Direction Bits 0000 -111 0000 -111
0Ch
PIR1
PSPIF⁽¹⁾ ADIF RCIF
TXIF
SSPIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000
8Ch
PIE1
PSPIE⁽¹⁾ ADIE RCIE
TXIE
SSPIE CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000
9Fh
ADCON1 ADFM —
—
—
PCFG3 PCFG2 PCFG1 PCFG0 --0- 0000 --0- 0000
Legend: x = unknown, u = unchanged, - = unimplemented, read as '0'. Shaded cells are not used by the Parallel Slave Port.
Note 1: Bits PSPIE and PSPIF are reserved on the PIC16F873/876; always maintain these bits clear.
 2001 Microchip Technology Inc.
DS30292C-page 39