Datasheet

PIC18F87J50 FAMILY
DS39775C-page 172 © 2009 Microchip Technology Inc.
REGISTER 11-6: PMEL: PARALLEL PORT ENABLE REGISTER LOW BYTE
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
PTEN7 PTEN6 PTEN5 PTEN4 PTEN3 PTEN2 PTEN1 PTEN0
bit 7 bit 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
bit 7-2 PTEN7:PTEN2: PMP Address Port Enable bits
1 = PMA<7:2> function as PMP address lines
0 = PMA<7:2> function as port I/O
bit 1-0 PTEN1:PTEN0: PMALH/PMALL Strobe Enable bits
1 = PMA1 and PMA0 function as either PMA<1:0> or PMALH and PMALL
0 = PMA1 and PMA0 pads functions as port I/O
REGISTER 11-7: PMSTATH: PARALLEL PORT STATUS REGISTER HIGH BYTE
R-0 R/W-0 U-0 U-0 R-0 R-0 R-0 R-0
IBF IBOV — — IB3F IB2F IB1F IB0F
bit 7 bit 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
bit 7 IBF: Input Buffer Full Status bit
1 = All writable input buffer registers are full
0 = Some or all of the writable input buffer registers are empty
bit 6 IBOV: Input Buffer Overflow Status bit
1 = A write attempt to a full input byte register occurred (must be cleared in software)
0 = No overflow occurred
bit 5-4 Unimplemented: Read as ‘0’
bit 3-0 IB3F:IB0F: Input Buffer x Status Full bits
1 = Input buffer contains data that has not been read (reading buffer will clear this bit)
0 = Input buffer does not contain any unread data