ATTINY44-20SSU Atmel, ATTINY44-20SSU Datasheet - Page 48
![IC MCU AVR 4K FLASH 20MHZ 14SOIC](/photos/7/39/73946/313-14-soic_sml.jpg)
ATTINY44-20SSU
Manufacturer Part Number
ATTINY44-20SSU
Description
IC MCU AVR 4K FLASH 20MHZ 14SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44-20SSU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
12
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Cpu Family
ATtiny
Device Core
AVR
Device Core Size
8b
Frequency (max)
20MHz
Interface Type
SPI/USI
Total Internal Ram Size
256Byte
# I/os (max)
12
Number Of Timers - General Purpose
2
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
14
Package Type
SOIC
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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9. Interrupts
9.1
48
Interrupt Vectors
ATtiny24/44/84
This section describes the specifics of the interrupt handling as performed in ATtiny24/44/84.
For a general explanation of the AVR interrupt handling, see
page
The interrupt vectors of ATtiny24/44/84 are described in
Table 9-1.
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 setup for Reset and Interrupt Vector Addresses in ATtiny24/44/84
is shown in the program example below.
Vector No.
12.
10
11
12
13
14
15
16
17
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
0x0010
Source
RESET
INT0
PCINT0
PCINT1
WDT
TIM1_CAPT
TIM1_COMPA
TIM1_COMPB
TIM1_OVF
TIM0_COMPA
TIM0_COMPB
TIM0_OVF
ANA_COMP
ADC
EE_RDY
USI_STR
USI_OVF
Table 9-1
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 Capture Event
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
“Reset and Interrupt Handling” on
below.
8006K–AVR–10/10
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