PIC16F870_13 Datasheet, PDF (43/172 Pages) Microchip Technology – 28/40-Pin, 8-Bit CMOS FLASH Microcontrollers

PIC16F870/871
FIGURE 4-9:
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 4-10:
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 4-11: 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
09h
89h
0Ch
8Ch
9Fh
Legend:
PORTD Port Data Latch when written: Port pins when read
xxxx xxxx uuuu uuuu
PORTE
—
—
—
—
—
RE2
RE1
RE0 ---- -xxx ---- -uuu
TRISE
IBF OBF IBOV PSPMODE — PORTE Data Direction bits 0000 -111 0000 -111
PIR1
PSPIF ADIF RCIF TXIF
— CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000
PIE1
PSPIE ADIE RCIE TXIE
— CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000
ADCON1 ADFM — —
—
PCFG3 PCFG2 PCFG1 PCFG0 --0- 0000 --0- 0000
x = unknown, u = unchanged, - = unimplemented, read as '0'. Shaded cells are not used by the Parallel Slave Port.
 2000-2013 Microchip Technology Inc.
DS30569C-page 43