Datasheet

PIC18F87J50 FAMILY

R-1 R/W-0 U-0 U-0 R-1 R-1 R-1 R-1

OBE OBUF

— — OB3E OB2E OB1E OB0E

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 OBE: Output Buffer Empty Status bit

1 = All readable output buffer registers are empty

0 = Some or all of the readable output buffer registers are full

bit 6 OBUF: Output Buffer Underflow Status bit

1 = A read occurred from an empty output byte register (must be cleared in software)

0 = No underflow occurred

bit 5-4 Unimplemented: Read as ‘0’

bit 3-0 OB3E:OB0E: Output Buffer x Status Empty bits

1 = Output buffer is empty (writing data to the buffer will clear this bit)

0 = Output buffer contains data that has not been transmitted