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ATmega64A Datasheet(PDF) 89 Page - ATMEL Corporation

Part # ATmega64A
Description  8-bit Microcontroller with 64K Bytes In-System Programmable Flash
PDF  392 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega64A Datasheet(HTML) 89 Page - ATMEL Corporation

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89
8160C–AVR–07/09
ATmega64A
13.4.2
DDRA – Port A Data Direction Register
13.4.3
PINA – Port A Input Pins Address
13.4.4
PORTB – Port B Data Register
13.4.5
DDRB – Port B Data Direction Register
13.4.6
PINB – Port B Input Pins Address
13.4.7
PORTC – Port C Data Register
13.4.8
DDRC – Port C Data Direction Register
13.4.9
PINC – Port C Input Pins Address
In ATmega103 compatibility mode, DDRC and PINC Registers are initialized to being Push-pull
Zero Output. The port pins assumes their Initial Value, even if the clock is not running. Note that
Bit
7
65
43
21
0
0x1A (0x3A)
DDA7
DDA6
DDA5
DDA4
DDA3
DDA2
DDA1
DDA0
DDRA
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
65
43
21
0
0x19 (0x39)
PINA7
PINA6
PINA5
PINA4
PINA3
PINA2
PINA1
PINA0
PINA
Read/Write
RR
RRR
RR
R
Initial Value
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Bit
765
43
21
0
0x18 (0x38)
PORTB7
PORTB6
PORTB5
PORTB4
PORTB3
PORTB2
PORTB1
PORTB0
PORTB
Read/Write
R/WR/W
R/WR/W
R/WR/W
R/WR/W
Initial Value
0
0
0
0
0
0
0
0
Bit
765
43
21
0
0x17 (0x37)
DDB7
DDB6
DDB5
DDB4
DDB3
DDB2
DDB1
DDB0
DDRB
Read/Write
R/WR/W
R/WR/W
R/WR/W
R/WR/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
65
43
21
0
0x16 (0x36)
PINB7
PINB6
PINB5
PINB4
PINB3
PINB2
PINB1
PINB0
PINB
Read/Write
RR
RRR
RR
R
Initial Value
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Bit
7
65
43
21
0
0x15 (0x35)
PORTC7
PORTC6
PORTC5
PORTC4
PORTC3
PORTC2
PORTC1
PORTC0
PORTC
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
765
43
21
0
0x14 (0x34)
DDC7
DDC6
DDC5
DDC4
DDC3
DDC2
DDC1
DDC0
DDRC
Read/Write
R/WR/W
R/WR/W
R/WR/W
R/WR/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
65
43
21
0
0x13 (0x33)
PINC7
PINC6
PINC5
PINC4
PINC3
PINC2
PINC1
PINC0
PINC
Read/Write
RRR
RR
RR
R
Initial Value
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A



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