ATMEGA168-20AI Atmel, ATMEGA168-20AI Datasheet - Page 8
ATMEGA168-20AI
Manufacturer Part Number
ATMEGA168-20AI
Description
IC AVR MCU 16K 20MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA168-20AI
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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
4. Register Summary
2545SS–AVR–07/10
Address
(0xFD)
(0xFC)
(0xEE)
(0xED)
(0xEC)
(0xEB)
(0xEA)
(0xDF)
(0xDE)
(0xDD)
(0xDC)
(0xDB)
(0xDA)
(0xCF)
(0xCE)
(0xCD)
(0xCC)
(0xCB)
(0xCA)
(0xFF)
(0xFE)
(0xFB)
(0xFA)
(0xF9)
(0xF8)
(0xF7)
(0xF6)
(0xF5)
(0xF4)
(0xF3)
(0xF2)
(0xF1)
(0xF0)
(0xEF)
(0xE9)
(0xE8)
(0xE7)
(0xE6)
(0xE5)
(0xE4)
(0xE3)
(0xE2)
(0xE1)
(0xE0)
(0xD9)
(0xD8)
(0xD7)
(0xD6)
(0xD5)
(0xD4)
(0xD3)
(0xD2)
(0xD1)
(0xD0)
(0xC9)
(0xC8)
(0xC7)
(0xC6)
(0xC5)
(0xC4)
(0xC3)
(0xC2)
(0xC1)
(0xC0)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
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Reserved
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Reserved
Reserved
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Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
UBRR0H
UCSR0C
UCSR0B
UCSR0A
UBRR0L
Name
UDR0
UMSEL01
RXCIE0
Bit 7
RXC0
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UMSEL00
TXCIE0
Bit 6
TXC0
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UDRIE0
UDRE0
UPM01
Bit 5
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USART Baud Rate Register Low
UPM00
RXEN0
Bit 4
USART I/O Data Register
FE0
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USBS0
TXEN0
Bit 3
DOR0
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USART Baud Rate Register High
UCSZ01 /UDORD0
UCSZ02
Bit 2
UPE0
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UCSZ00 / UCPHA0
ATmega48/88/168
RXB80
Bit 1
U2X0
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UCPOL0
MPCM0
TXB80
Bit 0
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