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ATmega328P Datasheet(PDF) 423 Page - ATMEL Corporation

Part # ATmega328P
Description  8-bit Microcontroller with 4/8/16/32K Bytes In-System Programmable Flash
PDF  448 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega328P Datasheet(HTML) 423 Page - ATMEL Corporation

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423
8161D–AVR–10/09
ATmega48PA/88PA/168PA/328P
30. Register Summary
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
(0xFF)
Reserved
–
–
–
–
–
–
–
–
(0xFE)
Reserved
–
–
–
–
–
–
–
–
(0xFD)
Reserved
–
–
–
–
–
–
–
–
(0xFC)
Reserved
–
–
–
–
–
–
–
–
(0xFB)
Reserved
–
–
–
–
–
–
–
–
(0xFA)
Reserved
–
–
–
–
–
–
–
–
(0xF9)
Reserved
–
–
–
–
–
–
–
–
(0xF8)
Reserved
–
–
–
–
–
–
–
–
(0xF7)
Reserved
–
–
–
–
–
–
–
–
(0xF6)
Reserved
–
–
–
–
–
–
–
–
(0xF5)
Reserved
–
–
–
–
–
–
–
–
(0xF4)
Reserved
–
–
–
–
–
–
–
–
(0xF3)
Reserved
–
–
–
–
–
–
–
–
(0xF2)
Reserved
–
–
–
–
–
–
–
–
(0xF1)
Reserved
–
–
–
–
–
–
–
–
(0xF0)
Reserved
–
–
–
–
–
–
–
–
(0xEF)
Reserved
–
–
–
–
–
–
–
–
(0xEE)
Reserved
–
–
–
–
–
–
–
–
(0xED)
Reserved
–
–
–
–
–
–
–
–
(0xEC)
Reserved
–
–
–
–
–
–
–
–
(0xEB)
Reserved
–
–
–
–
–
–
–
–
(0xEA)
Reserved
–
–
–
–
–
–
–
–
(0xE9)
Reserved
–
–
–
–
–
–
–
–
(0xE8)
Reserved
–
–
–
–
–
–
–
–
(0xE7)
Reserved
–
–
–
–
–
–
–
–
(0xE6)
Reserved
–
–
–
–
–
–
–
–
(0xE5)
Reserved
–
–
–
–
–
–
–
–
(0xE4)
Reserved
–
–
–
–
–
–
–
–
(0xE3)
Reserved
–
–
–
–
–
–
–
–
(0xE2)
Reserved
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–
–
–
–
–
–
–
(0xE1)
Reserved
–
–
–
–
–
–
–
–
(0xE0)
Reserved
–
–
–
–
–
–
–
–
(0xDF)
Reserved
–
–
–
–
–
–
–
–
(0xDE)
Reserved
–
–
–
–
–
–
–
–
(0xDD)
Reserved
–
–
–
–
–
–
–
–
(0xDC)
Reserved
–
–
–
–
–
–
–
–
(0xDB)
Reserved
–
–
–
–
–
–
–
–
(0xDA)
Reserved
–
–
–
–
–
–
–
–
(0xD9)
Reserved
–
–
–
–
–
–
–
–
(0xD8)
Reserved
–
–
–
–
–
–
–
–
(0xD7)
Reserved
–
–
–
–
–
–
–
–
(0xD6)
Reserved
–
–
–
–
–
–
–
–
(0xD5)
Reserved
–
–
–
–
–
–
–
–
(0xD4)
Reserved
–
–
–
–
–
–
–
–
(0xD3)
Reserved
–
–
–
–
–
–
–
–
(0xD2)
Reserved
–
–
–
–
–
–
–
–
(0xD1)
Reserved
–
–
–
–
–
–
–
–
(0xD0)
Reserved
–
–
–
–
–
–
–
–
(0xCF)
Reserved
–
–
–
–
–
–
–
–
(0xCE)
Reserved
–
–
–
–
–
–
–
–
(0xCD)
Reserved
–
–
–
–
–
–
–
–
(0xCC)
Reserved
–
–
–
–
–
–
–
–
(0xCB)
Reserved
–
–
–
–
–
–
–
–
(0xCA)
Reserved
–
–
–
–
–
–
–
–
(0xC9)
Reserved
–
–
–
–
–
–
–
–
(0xC8)
Reserved
–
–
–
–
–
–
–
–
(0xC7)
Reserved
–
–
–
–
–
–
–
–
(0xC6)
UDR0
USART I/O Data Register
195
(0xC5)
UBRR0H
USART Baud Rate Register High
199
(0xC4)
UBRR0L
USART Baud Rate Register Low
199
(0xC3)
Reserved
–
–
–
–
–
–
–
–
(0xC2)
UCSR0C
UMSEL01
UMSEL00
UPM01
UPM00
USBS0
UCSZ01 /UDORD0
UCSZ00 / UCPHA0
UCPOL0
197/212
(0xC1)
UCSR0B
RXCIE0
TXCIE0
UDRIE0
RXEN0
TXEN0
UCSZ02
RXB80
TXB80
196
(0xC0)
UCSR0A
RXC0
TXC0
UDRE0
FE0
DOR0
UPE0
U2X0
MPCM0
195



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