PIC16C63A/65B/73B/74B
DS30605C-page 36
2000 Microchip Technology Inc.
REGISTER 5-1:
TRISE REGISTER (ADDRESS 89h)
TABLE 5-10:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
R-0
R/W-0
U-0
R/W-1
IBF
OBF
IBOV
PSPMODE
TRISE2
TRISE1
TRISE0
bit 7
bit 0
bit 7
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 '0'
bit 2
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
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
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR,
BOR
Value on
all other
RESETS
09h
PORTE
RE2
RE1
RE0
---- -xxx
---- -uuu
89h
TRISE
IBF
OBF
IBOV
PSPMODE
PORTE Data Direction bits
0000 -111
9Fh
ADCON1
PCFG2
PCFG1
PCFG0
---- -000
Legend: x = unknown, u = unchanged, - = unimplemented, read as '0'. Shaded cells are not used by PORTE.
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