
PIC18F2450/4450
2006 Microchip Technology Inc.
Advance Information
DS39760A-page 91
REGISTER 8-5:
PIR2: PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 2
R/W-0
U-0
R/W-0
U-0
R/W-0
U-0
OSCFIF
—
USBIF
—
—HLVDIF
—
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
OSCFIF: Oscillator Fail Interrupt Flag bit
1
= System oscillator failed, clock input has changed to INTRC (must be cleared in software)
0
= System clock operating
bit 6
Unimplemented: Read as ‘0’
bit 5
USBIF: USB Interrupt Flag bit
1
= USB has requested an interrupt (must be cleared in software)
0
= No USB interrupt request
bit 4-3
Unimplemented: Read as ‘0’
bit 2
HLVDIF: High/Low-Voltage Detect Interrupt Flag bit
1
= A high/low-voltage condition occurred
0
= No high/low-voltage event has occurred
bit 1-0
Unimplemented: Read as ‘0’