ATMEGA168-20AUR Atmel, ATMEGA168-20AUR Datasheet - Page 370
ATMEGA168-20AUR
Manufacturer Part Number
ATMEGA168-20AUR
Description
MCU AVR 16KB FLASH 20MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA168-20AUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
32-TQFP, 32-VQFP
Package
32TQFP
Device Core
AVR
Family Name
ATmega
Maximum Speed
20 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
23
Interface Type
SPI/TWI/USART
On-chip Adc
8-chx10-bit
Number Of Timers
3
For Use With
ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
Quantity
Price
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9
10 System Control and Reset .................................................................... 44
11 Interrupts ................................................................................................ 55
12 External Interrupts ................................................................................. 65
ii
Power Management and Sleep Modes ................................................. 38
8.7128 kHz Internal Oscillator ......................................................................................33
8.8External Clock .........................................................................................................34
8.9Clock Output Buffer .................................................................................................34
8.10Timer/Counter Oscillator ........................................................................................35
8.11System Clock Prescaler ........................................................................................35
8.12Register Description ..............................................................................................36
9.1Sleep Modes ............................................................................................................38
9.2Idle Mode .................................................................................................................38
9.3ADC Noise Reduction Mode ....................................................................................39
9.4Power-down Mode ...................................................................................................39
9.5Power-save Mode ....................................................................................................39
9.6Standby Mode .........................................................................................................40
9.7Power Reduction Register .......................................................................................40
9.8Minimizing Power Consumption ..............................................................................40
9.9Register Description ................................................................................................42
10.1Resetting the AVR .................................................................................................44
10.2Reset Sources .......................................................................................................44
10.3Power-on Reset .....................................................................................................45
10.4External Reset .......................................................................................................46
10.5Brown-out Detection ..............................................................................................46
10.6Watchdog System Reset .......................................................................................47
10.7Internal Voltage Reference ....................................................................................47
10.8Watchdog Timer ....................................................................................................48
10.9Register Description ..............................................................................................52
11.1Overview ................................................................................................................55
11.2Interrupt Vectors in ATmega48 ..............................................................................55
11.3Interrupt Vectors in ATmega88 ..............................................................................57
11.4Interrupt Vectors in ATmega168 ............................................................................60
11.5Register Description ..............................................................................................63
12.1Pin Change Interrupt Timing ..................................................................................65
12.2Register Description ..............................................................................................66
ATmega48/88/168
2545S–AVR–07/10
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