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PIC16F913-I/ML 数据表(PDF) 40 Page - Microchip Technology |
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PIC16F913-I/ML 数据表(HTML) 40 Page - Microchip Technology |
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40 / 330 page  PIC16F913/914/916/917/946 DS41250F-page 38 © 2007 Microchip Technology Inc. 2.2.2.7 PIR2 Register The PIR2 register contains the interrupt flag bits, as shown in Register 2-7. Note: Interrupt flag bits are set when an interrupt condition occurs, regardless of the state of its corresponding enable bit or the global enable bit, GIE of the INTCON register. User software should ensure the appropriate interrupt flag bits are clear prior to enabling an interrupt. REGISTER 2-7: PIR2: PERIPHERAL INTERRUPT REQUEST REGISTER 2 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 U-0 R/W-0 OSFIF C2IF C1IF LCDIF —LVDIF —CCP2IF(1) 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 OSFIF: Oscillator Fail Interrupt Flag bit 1 = System oscillator failed, clock input has changed to INTOSC (must be cleared in software) 0 = System clock operating bit 6 C2IF: Comparator C2 Interrupt Flag bit 1 = Comparator output (C2OUT bit) has changed (must be cleared in software) 0 = Comparator output (C2OUT bit) has not changed bit 5 C1IF: Comparator C1 Interrupt Flag bit 1 = Comparator output (C1OUT bit) has changed (must be cleared in software) 0 = Comparator output (C1OUT bit) has not changed bit 4 LCDIF: LCD Module Interrupt bit 1 = LCD has generated an interrupt 0 = LCD has not generated an interrupt bit 3 Unimplemented: Read as ‘0’ bit 2 LVDIF: Low Voltage Detect Interrupt Flag bit 1 = LVD has generated an interrupt 0 = LVD has not generated an interrupt bit 1 Unimplemented: Read as ‘0’ bit 0 CCP2IF: CCP2 Interrupt Flag bit(1) 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 Note 1: PIC16F914/PIC16F917/PIC16F946 only. |
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