Microchip Technology DV164136 Data Sheet
PIC18F87J11 FAMILY
DS39778E-page 176
2007-2012 Microchip Technology Inc.
12.2.1.1
WRITE TO SLAVE PORT
When chip select is active and a write strobe occurs
(PMCS = 1 and PMWR = 1), the data from PMD<7:0>
is captured into the PMDIN1L register. The PMPIF and
IBF flag bits are set when the write ends. The timing for
the control signals in Write mode is shown in
(PMCS = 1 and PMWR = 1), the data from PMD<7:0>
is captured into the PMDIN1L register. The PMPIF and
IBF flag bits are set when the write ends. The timing for
the control signals in Write mode is shown in
. The polarity of the control signals are
configurable.
12.2.1.2
READ FROM SLAVE PORT
When chip select is active and a read strobe occurs
(PMCS = 1 and PMRD = 1), the data from the
PMDOUTL1 register (PMDOUTL1<7:0>) is presented
onto PMD<7:0>.The timing for the control signals in
Read mode is shown in
(PMCS = 1 and PMRD = 1), the data from the
PMDOUTL1 register (PMDOUTL1<7:0>) is presented
onto PMD<7:0>.The timing for the control signals in
Read mode is shown in
.
FIGURE 12-3:
PARALLEL SLAVE PORT WRITE WAVEFORMS
FIGURE 12-4:
PARALLEL SLAVE PORT READ WAVEFORMS
PMCS1
| | | | | | | Q4 | Q1 | Q2 | Q3 | Q4
PMWR
PMRD
PMD<7:0>
IBF
OBE
PMPIF
PMCS1
| | | | | | | Q4 | Q1 | Q2 | Q3 | Q4
PMWR
PMRD
PMD<7:0>
IBF
OBE
PMPIF