ATMEGA8515-16JUR Atmel, ATMEGA8515-16JUR Datasheet - Page 79
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ATMEGA8515-16JUR
Manufacturer Part Number
ATMEGA8515-16JUR
Description
MCU AVR 8KB FLASH 16MHZ 44PLCC
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA8515L-8MC.pdf
(257 pages)
Specifications of ATMEGA8515-16JUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
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General Interrupt Flag
Register – GIFR
2512K–AVR–01/10
corresponding interrupt of External Interrupt Request 1 is executed from the INT1 Inter-
rupt Vector.
• Bit 6 – INT0: External Interrupt Request 0 Enable
When the INT0 bit is set (one) and the I-bit in the Status Register (SREG) is set (one),
the external pin interrupt is enabled. The Interrupt Sense Control0 bits 1/0 (ISC01 and
ISC00) in the MCU General 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 Inter-
rupt Vector.
• Bit 5 – INT2: External Interrupt Request 2 Enable
When the INT2 bit is set (one) and the I-bit in the Status Register (SREG) is set (one),
the external pin interrupt is enabled. The Interrupt Sense Control2 bit (ISC2) in the MCU
Control and Status Register (MCUCSR) defines whether the external interrupt is acti-
vated on rising or falling edge of the INT2 pin. Activity on the pin will cause an interrupt
request even if INT2 is configured as an output. The corresponding interrupt of External
Interrupt Request 2 is executed from the INT2 Interrupt Vector.
• 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 GICR 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.
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 GICR 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.
This flag is always cleared when INT0 is configured as a level interrupt.
• Bit 5 – INTF2: External Interrupt Flag 2
When an event on the INT2 pin triggers an interrupt request, INTF2 becomes set (one).
If the I-bit in SREG and the INT2 bit in GICR 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. Note that when enter-
ing some sleep modes with the INT2 interrupt disabled, the input buffer on this pin will
be disabled. This may cause a logic change in internal signals which will set the INTF2
Flag. See “Digital Input Enable and Sleep Modes” on page 63 for more information.
Bit
Read/Write
Initial Value
INTF1
R/W
7
0
INTF0
R/W
6
0
INTF2
R/W
5
0
R
4
–
0
R
3
–
0
ATmega8515(L)
R
2
–
0
R
1
–
0
R
0
–
0
GIFR
79
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