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18F8680 Datasheet(PDF) 155 Page - Microchip Technology

Part # 18F8680
Description  64/68/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with ECAN Module
PDF  496 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

18F8680 Datasheet(HTML) 155 Page - Microchip Technology

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 2004 Microchip Technology Inc.
DS30491C-page 153
PIC18F6585/8585/6680/8680
REGISTER 10-1:
PSPCON REGISTER
FIGURE 10-29:
PARALLEL SLAVE PORT WRITE WAVEFORMS
R-0
R-0
R/W-0
R/W-0
U-0
U-0
U-0
U-0
IBF
OBF
IBOV
PSPMODE
—
—
—
—
bit 7
bit 0
bit 7
IBF: Input Buffer Full Status bit
1
= A data byte has been received and is waiting to be read by the CPU
0
= No data byte has been received
bit 6
OBF: Output Buffer Full Status bit
1
= The output buffer still holds a previously written data byte
0
= The output buffer has been read
bit 5
IBOV: Input Buffer Overflow Detect bit
1
= A write occurred when a previously input data byte has not been read
(must be cleared in software)
0
= No overflow occurred
bit 4
PSPMODE: Parallel Slave Port Mode Select bit
1
= Parallel Slave Port mode
0
= General Purpose I/O mode
bit 3-0
Unimplemented: Read as ‘0’
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
Q1
Q2
Q3
Q4
CS
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
WR
RD
IBF
OBF
PSPIF
PORTD<7:0>



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