PIC16F737-I Datasheet, PDF (71/276 Pages) Microchip Technology – 28/40/44-Pin, 8-Bit CMOS Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC16F7X7
REGISTER 5-1: TRISE REGISTER (ADDRESS 89h)
R-0
R-0
R/W-0
R/W-0
U-0
R/W-1 R/W-1 R/W-1
IBF
OBF
IBOV PSPMODE —⁽¹⁾ TRISE2 TRISE1 TRISE0
bit 7
bit 0
bit 7
Parallel Slave Port Status/Control bits:
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
bit 6
OBF: Output Buffer Full Status bit
1 = The output buffer still holds a previously written word
0 = The output buffer has been read
bit 5
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
bit 4
PSPMODE: Parallel Slave Port Mode Select bit
1 = Parallel Slave Port mode
0 = General Purpose I/O mode
bit 3
Unimplemented: Read as ‘1’⁽¹⁾
Note 1: RE3 is an input only. The state of the TRISE3 bit has no effect and will always read ‘1’.
bit 2
PORTE Data Direction bits:
TRISE2: Direction Control bit for pin RE2/CS/AN7
1 = Input
0 = Output
bit 1
TRISE1: Direction Control bit for pin RE1/WR/AN6
1 = Input
0 = Output
bit 0
TRISE0: Direction Control bit for pin RE0/RD/AN5
1 = Input
0 = Output
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
 2004 Microchip Technology Inc.
DS30498C-page 69