PIC18F2510 MICROCHIP [Microchip Technology], PIC18F2510 Datasheet - Page 88
PIC18F2510
Manufacturer Part Number
PIC18F2510
Description
28/40/44-PIN FLASH MICROCONTROLLERS WITH 10-BIT A/D AND NANO WATT TECHNOLOGY
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2510.pdf
(380 pages)
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PIC18F2X1X/4X1X
8.2
The PIR registers contain the individual flag bits for the
peripheral interrupts. Due to the number of peripheral
interrupt sources, there are two Peripheral Interrupt
Request (Flag) registers (PIR1 and PIR2).
REGISTER 8-4:
DS39636A-page 86
PIR Registers
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
PIR1: PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 1
bit 7
PSPIF: Parallel Slave Port Read/Write Interrupt Flag bit
1 = A read or a write operation has taken place (must be cleared in software)
0 = No read or write has occurred
ADIF: A/D Converter Interrupt Flag bit
1 = An A/D conversion completed (must be cleared in software)
0 = The A/D conversion is not complete
RCIF: EUSART Receive Interrupt Flag bit
1 = The EUSART receive buffer, RCREG, is full (cleared when RCREG is read)
0 = The EUSART receive buffer is empty
TXIF: EUSART Transmit Interrupt Flag bit
1 = The EUSART transmit buffer, TXREG, is empty (cleared when TXREG is written)
0 = The EUSART transmit buffer is full
SSPIF: Master Synchronous Serial Port Interrupt Flag bit
1 = The transmission/reception is complete (must be cleared in software)
0 = Waiting to transmit/receive
CCP1IF: CCP1 Interrupt Flag bit
Capture mode:
1 = A TMR1 register capture occurred (must be cleared in software)
0 = No TMR1 register capture occurred
Compare mode:
1 = A TMR1 register compare match occurred (must be cleared in software)
0 = No TMR1 register compare match occurred
PWM mode:
Unused in this mode.
TMR2IF: TMR2 to PR2 Match Interrupt Flag bit
1 = TMR2 to PR2 match occurred (must be cleared in software)
0 = No TMR2 to PR2 match occurred
TMR1IF: TMR1 Overflow Interrupt Flag bit
1 = TMR1 register overflowed (must be cleared in software)
0 = TMR1 register did not overflow
Legend:
R = Readable bit
-n = Value at POR
PSPIF
R/W-0
Note 1: This bit is unimplemented on 28-pin devices and is read as ‘0’.
(1)
R/W-0
ADIF
RCIF
R-0
W = Writable bit
‘1’ = Bit is set
Preliminary
TXIF
R-0
Note 1: Interrupt flag bits are set when an interrupt
2: User software should ensure the appropri-
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
SSPIF
R/W-0
condition occurs regardless of the state of
its corresponding enable bit or the Global
Interrupt Enable bit, GIE (INTCON<7>).
ate interrupt flag bits are cleared prior to
enabling an interrupt and after servicing
that interrupt.
(1)
CCP1IF
R/W-0
2004 Microchip Technology Inc.
TMR2IF
R/W-0
x = Bit is unknown
TMR1IF
R/W-0
bit 0
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