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ATTINY2313-20MU Scheda tecnica(PDF) 65 Page - ATMEL Corporation |
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ATTINY2313-20MU Scheda tecnica(HTML) 65 Page - ATMEL Corporation |
65 / 231 page 65 ATtiny2313/V 2543I–AVR–04/06 External Interrupt Flag Register – EIFR • Bit 7 – INTF1: External Interrupt Flag 1 When an edge or logic change on the INT1 pin triggers an interrupt request, INTF1 becomes set (one). If the I-bit in SREG and the INT1 bit in GIMSK are set (one), the MCU will jump to the corresponding Interrupt Vector. The flag is cleared when the inter- rupt routine is executed. Alternatively, the flag can be cleared by writing a logical one to it. This flag is always cleared when INT1 is configured as a level interrupt. • Bit 6 – INTF0: External Interrupt Flag 0 When an edge or logic change on the INT0 pin triggers an interrupt request, INTF0 becomes set (one). If the I-bit in SREG and the INT0 bit in GIMSK are set (one), the MCU will jump to the corresponding Interrupt Vector. The flag is cleared when the inter- rupt routine is executed. Alternatively, the flag can be cleared by writing a logical one to it. This flag is always cleared when INT0 is configured as a level interrupt. • Bit 5 – PCIF: Pin Change Interrupt Flag When a logic change on any PCINT7..0 pin triggers an interrupt request, PCIF becomes set (one). If the I-bit in SREG and the PCIE bit in GIMSK are set (one), the MCU will jump to the corresponding Interrupt Vector. The flag is cleared when the interrupt routine is executed. Alternatively, the flag can be cleared by writing a logical one to it. Pin Change Mask Register – PCMSK • Bit 7..0 – PCINT7..0: Pin Change Enable Mask 7..0 Each PCINT7..0-bit selects whether pin change interrupt is enabled on the correspond- ing I/O pin. If PCINT7..0 is set and the PCIE bit in GIMSK is set, pin change interrupt is enabled on the corresponding I/O pin. If PCINT7..0 is cleared, pin change interrupt on the corresponding I/O pin is disabled. Bit 7 654 32 10 INTF1 INTF0 PCIF – – – – –EIFR Read/Write R/W R/W R/W R R R R R Initial Value 0 0 0 0 0 0 0 0 Bit 7 65432 1 0 PCINT7 PCINT6 PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 PCMSK Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Initial Value 0 00000 0 0 |
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