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ATMEGA1280 데이터시트(HTML) 79 Page - ATMEL Corporation

부품명 ATMEGA1280
상세내용  8- BIT Microcontroller with 256K Bytes In-System Programmable Flash
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제조사  ATMEL [ATMEL Corporation]
홈페이지  http://www.atmel.com
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ATMEGA1280 데이터시트(HTML) 79 Page - ATMEL Corporation

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79
ATmega640/1280/1281/2560/2561
2549A–AVR–03/05
• Bit 0 – PCIF0: Pin Change Interrupt Flag 0
When a logic change on any PCINT7..0 pin triggers an interrupt request, PCIF0
becomes set (one). If the I-bit in SREG and the PCIE0 bit in EIMSK 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.
Pin Change Mask Register 2 –
PCMSK2
• Bit 7..0 – PCINT23..16: Pin Change Enable Mask 23..16
Each PCINT23..16-bit selects whether pin change interrupt is enabled on the corre-
sponding I/O pin. If PCINT23..16 is set and the PCIE2 bit in PCICR is set, pin change
interrupt is enabled on the corresponding I/O pin. If PCINT23..16 is cleared, pin change
interrupt on the corresponding I/O pin is disabled.
Pin Change Mask Register 1 –
PCMSK1
• Bit 7..0 – PCINT15..8: Pin Change Enable Mask 15..8
Each PCINT15..8-bit selects whether pin change interrupt is enabled on the correspond-
ing I/O pin. If PCINT15..8 is set and the PCIE1 bit in EIMSK is set, pin change interrupt
is enabled on the corresponding I/O pin. If PCINT15..8 is cleared, pin change interrupt
on the corresponding I/O pin is disabled.
Pin Change Mask Register 0 –
PCMSK0
• 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 PCIE0 bit in PCICR 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
765
43
210
PCINT23
PCINT22
PCINT21
PCINT20
PCINT19
PCINT18
PCINT17
PCINT16
PCMSK2
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
6
543
21
0
PCINT15
PCINT14
PCINT13
PCINT12
PCINT11
PCINT10
PCINT9
PCINT8
PCMSK1
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
654
32
10
PCINT7
PCINT6
PCINT5
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
PCMSK0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0


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