參數(shù)資料
型號(hào): MC80C32-30:D
廠商: TEMIC SEMICONDUCTORS
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, 30 MHz, MICROCONTROLLER, CDIP40
文件頁(yè)數(shù): 185/226頁(yè)
文件大?。?/td> 3676K
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61
2543L–AVR–08/10
ATtiny2313
When the INT0 bit is set (one) and the I-bit in the Status Register (SREG) is set (one), the exter-
nal pin interrupt is enabled. The Interrupt Sense Control0 bits 1/0 (ISC01 and ISC00) in the MCU
Control Register – MCUCR – define whether the external interrupt is activated on rising and/or
falling edge of the INT0 pin or level sensed. Activity on the pin will cause an interrupt request
even if INT0 is configured as an output. The corresponding interrupt of External Interrupt
Request 0 is executed from the INT0 Interrupt Vector.
Bit 5 – PCIE: Pin Change Interrupt Enable
When the PCIE bit is set (one) and the I-bit in the Status Register (SREG) is set (one), pin
change interrupt 1 is enabled. Any change on any enabled PCINT7..0 pin will cause an interrupt.
The corresponding interrupt of Pin Change Interrupt Request is executed from the PCI Interrupt
Vector. PCINT7..0 pins are enabled individually by the PCMSK Register.
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 cor-
responding 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. 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 cor-
responding 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. 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 cor-
responding 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 corresponding 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
Initial Value
0
Bit
7
65432
1
0
PCINT7
PCINT6
PCINT5
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
PCMSK
Read/Write
R/W
Initial Value
0
00000
0
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