ATMEGA164P-20MCU Atmel, ATMEGA164P-20MCU Datasheet - Page 12

• Manufacturer Part Number: ATMEGA164P-20MCU
• Description: MCU AVR 16K FLASH 20MHZ 44-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA164P-20MCU

• 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: 32
• 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: 44-VQFN Exposed Pad
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Notes:
12
0x1C (0x3C)
0x0D (0x2D)
0x0C (0x2C)
0x1B (0x3B)
0x1A (0x3A)
0x0F (0x2F)
0x0E (0x2E)
0x0B (0x2B)
0x0A (0x2A)
0x19 (0x39)
0x18 (0x38)
0x17 (0x37)
0x16 (0x36)
0x15 (0x35)
0x14 (0x34)
0x13 (0x33)
0x12 (0x32)
0x11 (0x31)
0x10 (0x30)
0x09 (0x29)
0x08 (0x28)
0x07 (0x27)
0x06 (0x26)
0x05 (0x25)
0x04 (0x24)
0x03 (0x23)
0x02 (0x22)
0x01 (0x21)
0x00 (0x20)
Address
1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
2. I/O registers within the address range $00 - $1F are directly bit-accessible using the SBI and CBI instructions. In these reg-
3. Some of the status flags are cleared by writing a logical one to them. Note that the CBI and SBI instructions will operate on
4. When using the I/O specific commands IN and OUT, the I/O addresses $00 - $3F must be used. When addressing I/O regis-
ATmega164P/324P/644P
should never be written.
isters, the value of single bits can be checked by using the SBIS and SBIC instructions.
all bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions
work with registers 0x00 to 0x1F only.
ters as data space using LD and ST instructions, $20 must be added to these addresses. The ATmega164P/324P/644P 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 $60 - $FF, only the ST/STS/STD and LD/LDS/LDD instructions
can be used.
EIFR
PCIFR
Reserved
Reserved
Reserved
TIFR2
TIFR1
TIFR0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PORTD
DDRD
PIND
PORTC
DDRC
PINC
PORTB
DDRB
PINB
PORTA
DDRA
PINA
Name
PORTD7
PORTC7
PORTB7
PORTA7
PIND7
PINC7
PINB7
PINA7
DDD7
DDC7
DDB7
DDA7
Bit 7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTD6
PORTC6
PORTB6
PORTA6
PIND6
PINC6
PINB6
PINA6
DDD6
DDC6
DDB6
DDA6
Bit 6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTD5
PORTC5
PORTB5
PORTA5
PIND5
PINC5
DDD5
DDC5
PINB5
PINA5
Bit 5
DDB5
DDA5
ICF1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTD4
PORTC4
PORTB4
PORTA4
PIND4
PINC4
PINB4
PINA4
Bit 4
DDD4
DDC4
DDB4
DDA4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTD3
PORTC3
PORTB3
PORTA3
PCIF3
PIND3
PINC3
PINB3
PINA3
DDD3
DDC3
DDB3
DDA3
Bit 3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTD2
PORTC2
PORTB2
PORTA2
OCF2B
OCF1B
OCF0B
PIND2
PINC2
PINB2
PINA2
INTF2
PCIF2
DDD2
DDC2
DDB2
DDA2
Bit 2
-
-
-
-
-
-
-
-
-
-
-
-
PORTD1
PORTC1
PORTB1
PORTA1
OCF2A
OCF1A
OCF0A
INTF1
PCIF1
PIND1
PINC1
PINB1
PINA1
DDD1
DDC1
DDB1
DDA1
Bit 1
-
-
-
-
-
-
-
-
-
-
-
-
PORTD0
PORTC0
PORTB0
PORTA0
PIND0
PINC0
PINB0
PINA0
INTF0
PCIF0
DDD0
DDC0
Bit 0
TOV2
TOV1
TOV0
DDB0
DDA0
-
-
-
-
-
-
-
-
-
-
-
-
8011OS–AVR–07/10
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