PIC18F44J50-I Datasheet, PDF (175/562 Pages) Microchip Technology – 28/44-Pin, Low-Power, High-Performance USB Microcontrollers

PIC18F46J50 FAMILY
REGISTER 11-7: PMSTATH: PARALLEL PORT STATUS REGISTER HIGH BYTE (BANKED F55h)⁽¹⁾
R-0
R/W-0
U-0
IBF
IBOV
—
bit 7
U-0
R-0
R-0
R-0
R-0
—
IB3F
IB2F
IB1F
IB0F
bit 0
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
bit 7
bit 6
bit 5-4
bit 3-0
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
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
Unimplemented: Read as ‘0’
IB3F:IB0F: Input Buffer x Status Full bits
1 = Input buffer contains data that has not been read (reading the buffer will clear this bit)
0 = Input buffer does not contain any unread data
Note 1: This register is only available on 44-pin devices.
REGISTER 11-8: PMSTATL: PARALLEL PORT STATUS REGISTER LOW BYTE (BANKED F54h)⁽¹⁾
R-1
R/W-0
U-0
OBE
OBUF
—
bit 7
U-0
R-1
R-1
R-1
R-1
—
OB3E
OB2E
OB1E
OB0E
bit 0
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
bit 7
bit 6
bit 5-4
bit 3-0
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
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
Unimplemented: Read as ‘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
Note 1: This register is only available on 44-pin devices.
 2011 Microchip Technology Inc.
DS39931D-page 175