ATtiny4 Atmel Corporation, ATtiny4 Datasheet - Page 39
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATtiny4
Manufacturer Part Number
ATtiny4
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny4
Flash (kbytes)
0.5 Kbytes
Pin Count
6
Max. Operating Frequency
12 MHz
Cpu
8-bit AVR
# Of Touch Channels
1
Hardware Qtouch Acquisition
No
Max I/o Pins
4
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.03
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
1
Output Compare Channels
2
Input Capture Channels
1
Pwm Channels
2
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATtiny4-TS8R
Manufacturer:
ADI
Quantity:
635
Part Number:
ATtiny4-TSHR
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny4313-MMHR
Manufacturer:
MICRON
Quantity:
4 100
Company:
Part Number:
ATtiny4313-MU
Manufacturer:
HITTITE
Quantity:
101
Part Number:
ATtiny4313-SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny44-15MZ
Manufacturer:
ATMEL
Quantity:
1 000
Part Number:
ATtiny44-15MZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny44-15SSZ
Manufacturer:
ATMEL
Quantity:
350
Part Number:
ATtiny441-MUR
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
ATtiny44A-MFR
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
9.3.2
9.3.3
8127E–AVR–11/11
EIMSK – External Interrupt Mask Register
EIFR – External Interrupt Flag Register
selected, the low level must be held until the completion of the currently executing instruction to
generate an interrupt.
Table 9-2.
• Bits 7:1 – Res: Reserved Bits
These bits are reserved and will always read zero.
• Bit 0 – 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 exter-
nal pin interrupt is enabled. The Interrupt Sense Control bits (ISC01 and ISC00) in the External
Interrupt Control Register A (EICRA) 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.
• Bits 7:1 – Res: Reserved Bits
These bits are reserved and will always read zero.
• Bit 0 – 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 EIMSK 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 constantly zero when INT0 is configured as a level interrupt.
Bit
0x13
Read/Write
Initial Value
Bit
0x14
Read/Write
Initial Value
ISC01
0
0
1
1
Interrupt 0 Sense Control
ISC00
R
R
7
–
0
7
–
0
0
1
0
1
Description
The low level of INT0 generates an interrupt request.
Any logical change on INT0 generates an interrupt request.
The falling edge of INT0 generates an interrupt request.
The rising edge of INT0 generates an interrupt request.
R
R
6
–
0
6
–
0
R
R
5
–
0
5
–
0
R
R
4
–
0
4
–
0
R
R
3
–
0
3
–
0
R
R
2
–
0
2
–
0
ATtiny4/5/9/10
R
R
1
–
0
1
–
0
INTF0
INTO
R/W
R/W
0
0
0
0
EIMSK
EIFR
39