ATMEGA165 ATMEL [ATMEL Corporation], ATMEGA165 Datasheet - Page 10

• Manufacturer Part Number: ATMEGA165
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Note:1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
2.
3.
4.
10
0x1B (0x3B)
0x1A (0x3A)
0x0E (0x2E)
0x0D (0x2D)
0x0C (0x2C)
0x0B (0x2B)
0x0A (0x2A)
Address
0x19 (0x39)
0x18 (0x38)
0x17 (0x37)
0x16 (0x36)
0x15 (0x35)
0x14 (0x34)
0x13 (0x33)
0x12 (0x32)
0x11 (0x31)
0x10 (0x30)
0x0F (0x2F)
0x09 (0x29)
0x08 (0x28)
0x07 (0x27)
0x06 (0x26)
0x05 (0x25)
0x04 (0x24)
0x03 (0x23)
0x02 (0x22)
0x01 (0x21)
0x00 (0x20)
I/O Registers within the address range 0x00 - 0x1F are directly bit-accessible using the SBI and CBI instructions. In these regis-
Some of the Status Flags are cleared by writing a logical one to them. Note that, unlike most other AVRs, the CBI and SBI
When using the I/O specific commands IN and OUT, the I/O addresses 0x00 - 0x3F must be used. When addressing I/O Regis-
ATmega165/V
should never be written.
ters, the value of single bits can be checked by using the SBIS and SBIC instructions.
instructions will only operate on the specified bit, and can therefore be used on registers containing such Status Flags. The
CBI and SBI instructions work with registers 0x00 to 0x1F only.
ters as data space using LD and ST instructions, 0x20 must be added to these addresses. The ATmega165 is a complex
microcontroller with more peripheral units than can be supported within the 64 location reserved in Opcode for the IN and
OUT instructions. For the Extended I/O space from 0x60 - 0xFF in SRAM, only the ST/STS/STD and LD/LDS/LDD instruc-
tions can be used.
Reserved
Reserved
Reserved
Reserved
Name
PORTG
PORTD
PORTF
PORTE
PORTC
PORTB
PORTA
DDRG
DDRD
TIFR2
TIFR1
TIFR0
DDRF
DDRE
DDRC
DDRB
DDRA
PING
PINE
PIND
PINC
PINB
PINA
PINF
PORTE7
PORTD7
PORTC7
PORTB7
PORTA7
PORTF7
Bit 7
PINF7
PINE7
PIND7
PINC7
PINB7
PINA7
DDF7
DDE7
DDD7
DDC7
DDB7
DDA7
–
–
–
–
–
–
–
–
–
–
PORTD6
PORTC6
PORTF6
PORTE6
PORTB6
PORTA6
Bit 6
PINE6
PIND6
PINC6
PINB6
PINA6
PINF6
DDE6
DDD6
DDC6
DDB6
DDA6
DDF6
–
–
–
–
–
–
–
–
–
–
PORTF5
PORTE5
PORTD5
PORTC5
PORTB5
PORTA5
PING5
PIND5
PINC5
Bit 5
PINF5
PINE5
DDD5
DDC5
PINB5
PINA5
DDF5
DDE5
DDB5
DDA5
ICF1
–
–
–
–
–
–
–
–
PORTG4
PORTF4
PORTE4
PORTD4
PORTC4
PORTB4
PORTA4
PING4
PIND4
PINC4
Bit 4
DDG4
PINF4
PINE4
DDD4
DDC4
PINB4
PINA4
DDF4
DDE4
DDB4
DDA4
–
–
–
–
–
–
–
PORTG3
PORTE3
PORTD3
PORTC3
PORTB3
PORTA3
PORTF3
PING3
Bit 3
PINF3
PINE3
PIND3
PINC3
PINB3
PINA3
DDG3
DDF3
DDE3
DDD3
DDC3
DDB3
DDA3
–
–
–
–
–
–
–
PORTG2
PORTD2
PORTC2
PORTF2
PORTE2
PORTB2
PORTA2
OCF1B
Bit 2
PING2
PINE2
PIND2
PINC2
PINB2
PINA2
DDG2
PINF2
DDE2
DDD2
DDC2
DDB2
DDA2
DDF2
–
–
–
–
–
–
PORTG1
PORTF1
PORTE1
PORTD1
PORTC1
PORTB1
PORTA1
OCF2A
OCF1A
OCF0A
PING1
PIND1
PINC1
Bit 1
DDG1
PINF1
PINE1
PINB1
PINA1
DDF1
DDE1
DDD1
DDC1
DDB1
DDA1
–
–
–
–
PORTG0
PORTF0
PORTE0
PORTD0
PORTC0
PORTB0
PORTA0
Bit 0
PING0
PINE0
PIND0
PINC0
PINB0
PINA0
DDG0
PINF0
DDE0
DDD0
DDC0
DDB0
DDA0
TOV2
TOV1
TOV0
DDF0
–
–
–
–
2573AS–AVR–06/04
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