PIC18F2420 MICROCHIP [Microchip Technology], PIC18F2420 Datasheet - Page 120

• Manufacturer Part Number: PIC18F2420
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2420/2520/4420/4520
REGISTER 10-1:
DS39631A-page 118
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
TRISE REGISTER (40/44-PIN DEVICES ONLY)
IBF: Input Buffer Full Status bit
1 = A word has been received and 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 (in Microprocessor mode)
1 = A write occurred when a previously input word has not been read (must be cleared in software)
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’
TRISE2: RE2 Direction Control bit
1 = Input
0 = Output
TRISE1: RE1 Direction Control bit
1 = Input
0 = Output
TRISE0: RE0 Direction Control bit
1 = Input
0 = Output
bit 7
Legend:
R = Readable bit
-n = Value at POR
R-0
IBF
OBF
R-0
R/W-0
IBOV
Preliminary
W = Writable bit
‘1’ = Bit is set
PSPMODE
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U-0
—
TRISE2
R/W-1
 2004 Microchip Technology Inc.
x = Bit is unknown
TRISE1
R/W-1
TRISE0
R/W-1
bit 0