ATtiny43U Atmel Corporation, ATtiny43U Datasheet - Page 57

• Manufacturer Part Number: ATtiny43U
• Manufacturer: Atmel Corporation

Specifications of ATtiny43U

• Flash (kbytes): 4 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 8 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 0.7 to 5.5
• Operating Voltage (vcc): 0.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

10. Interrupts
10.1
8048B–AVR–03/09
Interrupt Vectors
This section describes the specifics of the interrupt handling as performed in ATtiny43U. For a
general explanation of the AVR interrupt handling, see
13.
Table 10-1.
If the program never enables an interrupt source, the Interrupt Vectors are not used, and regular
program code can be placed at these locations. The most typical and general program setup for
the Reset and Interrupt Vector Addresses in ATtiny43U is:
Vector No.
Address Labels Code
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Reset and Interrupt Vectors
Program Address
0x000A
0x000B
0x000C
0x000D
0x000E
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
0x0008
0x0009
0x000F
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
RESET
INT0
PCINT0
PCINT1
WDT
TIM1_COMPA
TIM1_COMPB
TIM1_OVF
Source
RESET
INT0
PCINT0
PCINT1
WDT
TIMER1_COMPA
TIMER1_COMPB
TIMER1_OVF
TIMER0_COMPA
TIMER0_COMPB
TIMER0_OVF
ANA_COMP
ADC
EE_RDY
USI_START
USI_OVF
Comments
; Reset Handler
; IRQ0 Handler
; PCINT0 Handler
; PCINT1 Handler
; Watchdog Interrupt Handler
; Timer1 Compare A Handler
; Timer1 Compare B Handler
; Timer1 Overflow Handler
“Reset and Interrupt Handling” on page
Interrupt Definition
External Pin, Power-on Reset,
Brown-out Reset, Watchdog Reset
External Interrupt Request 0
Pin Change Interrupt Request 0
Pin Change Interrupt Request 1
Watchdog Time-out
Timer/Counter1 Compare Match A
Timer/Counter1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter0 Compare Match A
Timer/Counter0 Compare Match B
Timer/Counter0 Overflow
Analog Comparator
ADC Conversion Complete
EEPROM Ready
USI Start
USI Overflow
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