ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 411

• Manufacturer Part Number: ATmega32U4
• Manufacturer: Atmel Corporation

Specifications of ATmega32U4

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 14
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 26
• Ext Interrupts: 13
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 3.3
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 12
• Input Capture Channels: 2
• Pwm Channels: 8
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

Note:
7766F–AVR–11/10
0x0D (0x2D)
0x0C (0x2C)
0x1B (0x3B)
0x1A (0x3A)
0x0E (0x2E)
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)
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-
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 ATmega16U4/ATmega32U4 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 - $1FF in SRAM, only the ST/STS/STD and LD/LDS/LDD
instructions can be used.
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Name
PORTE
PORTD
PORTC
PORTB
PORTF
PCIFR
DDRE
DDRD
DDRC
DDRB
TIFR4
TIFR3
TIFR1
TIFR0
DDRF
PINF
PINE
PIND
PINC
PINB
PORTD7
PORTC7
PORTB7
PORTF7
OCF4D
Bit 7
PINF7
PIND7
PINC7
PINB7
DDF7
DDD7
DDC7
DDB7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTE6
PORTD6
PORTC6
PORTB6
PORTF6
OCF4A
Bit 6
PINF6
PINE6
PIND6
PINC6
PINB6
DDF6
DDE6
DDD6
DDC6
DDB6
-
-
-
-
-
-
-
-
-
-
-
-
PORTF5
PORTD5
PORTB5
OCF4B
PIND5
Bit 5
PINF5
PINB5
DDF5
DDD5
DDB5
ICF3
ICF1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTF4
PORTD4
PORTB4
Bit 4
PIND4
PINB4
PINF4
DDD4
DDF4
DDB4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTD3
PORTB3
OCF3C
OCF1C
Bit 3
PIND3
PINB3
DDD3
DDB3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTE2
PORTD2
PORTB2
OCF3B
OCF1B
OCF0B
Bit 2
PINE2
PIND2
PINB2
DDD2
TOV4
DDE2
DDB2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTF1
PORTD1
PORTB1
OCF3A
OCF1A
OCF0A
PIND1
Bit 1
PINF1
DDD1
PINB1
DDF1
DDB1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ATmega16/32U4
PORTD0
PORTB0
PORTF0
Bit 0
PCIF0
PINF0
PIND0
PINB0
TOV3
TOV1
TOV0
DDF0
DDD0
DDB0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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