PIC18LF8720 Microchip Technology, PIC18LF8720 Datasheet - Page 131

• Manufacturer Part Number: PIC18LF8720
• Description: (PIC18LF6620/6520/8520/6620/8620/6720/8720) 64/80-Pin High-Performance / 64-Kbyte Enhanced Flash Microcontrollers
• Manufacturer: Microchip Technology

REGISTER 10-1:
FIGURE 10-24:
 2004 Microchip Technology Inc.
PORTD<7:0>
bit 7
bit 6
bit 5
bit 4
bit 3-0
PSPIF
OBF
CS
WR
RD
IBF
PIC18F6520/8520/6620/8620/6720/8720
PSPCON REGISTER
PARALLEL SLAVE PORT WRITE WAVEFORMS
IBF: Input Buffer Full Status bit
1 = A word has been received and is waiting to be read by the CPU
0 = No word has been received
OBF: Output Buffer Full Status bit
1 = The output buffer still holds a previously written word
0 = The output buffer has been read
IBOV: Input Buffer Overflow Detect bit
1 = A write occurred when a previously input word has not been read
0 = No overflow occurred
PSPMODE: Parallel Slave Port Mode Select bit
1 = Parallel Slave Port mode
0 = General Purpose I/O mode
Unimplemented: Read as ‘0’
Legend:
R = Readable bit
- n = Value at POR
bit 7
Q1
R-0
IBF
(must be cleared in software)
Q2
OBF
R-0
Q3
Q4
R/W-0
IBOV
W = Writable bit
‘1’ = Bit is set
Q1
PSPMODE
R/W-0
Q2
Q3
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U-0
—
Q4
U-0
Q1
—
Q2
x = Bit is unknown
U-0
DS39609B-page 129
—
Q3
Q4
U-0
—
bit 0