ATMEGA32U4-AU Atmel, ATMEGA32U4-AU Datasheet - Page 408

• Manufacturer Part Number: ATMEGA32U4-AU
• Description: MCU AVR 32K FLASH 16MHZ 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32U4-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 26
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: ATMEGA32x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2.5 KB
• Interface Type: SPI/TWI/USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 26
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12-ch x 10-bit
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 16MHz
• Total Internal Ram Size: 2.5KB
• # I/os (max): 26
• Number Of Timers - General Purpose: 5
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: TQFP
• Controller Family/series: AVR MEGA
• No. Of I/o's: 26
• Eeprom Memory Size: 1KB
• Ram Memory Size: 2.5KB
• Cpu Speed: 16MHz
• Rohs Compliant: Yes
• For Use With: ATSTK524 - KIT STARTER ATMEGA32M1/MEGA32C1ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ATMEGA32U4-16AU; ATMEGA32U4-16AU

31. Register Summary
7766F–AVR–11/10
Address
(0xFD)
(0xFC)
(0xEE)
(0xED)
(0xEC)
(0xEB)
(0xEA)
(0xDF)
(0xDE)
(0xDD)
(0xDC)
(0xDB)
(0xDA)
(0xCF)
(0xCE)
(0xCD)
(0xCC)
(0xCB)
(0xCA)
(0xFF)
(0xFE)
(0xFB)
(0xFA)
(0xF9)
(0xF8)
(0xF7)
(0xF6)
(0xF5)
(0xF4)
(0xF3)
(0xF2)
(0xF1)
(0xF0)
(0xEF)
(0xE9)
(0xE8)
(0xE7)
(0xE6)
(0xE5)
(0xE4)
(0xE3)
(0xE2)
(0xE1)
(0xE0)
(0xD9)
(0xD8)
(0xD7)
(0xD6)
(0xD5)
(0xD4)
(0xD3)
(0xD2)
(0xD1)
(0xD0)
(0xC9)
(0xC8)
(0xC7)
(0xC6)
(0xC5)
(0xC4)
(0xC3)
(0xC2)
(0xC1)
(0xC0)
(0xBF)
UDFNUMH
UDFNUML
UECFG1X
UECFG0X
UHWCON
UESTA1X
UESTA0X
CLKSEL1
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
UECONX
Reserved
UDADDR
Reserved
Reserved
Reserved
Reserved
Reserved
USBCON
Reserved
Reserved
Reserved
Reserved
CLKSEL0
UEBCHX
UEBCLX
UEDATX
USBSTA
UBRR1H
UCSR1C
UCSR1B
UCSR1A
TCCR4D
TCCR4C
UBRR1L
CLKSTA
TCCR4E
TCCR4B
TCCR4A
Name
UEIENX
UENUM
UEINTX
UDMFN
UDCON
USBINT
OCR4D
OCR4C
OCR4B
OCR4A
UERST
UDIEN
UDINT
UEINT
UDR1
TC4H
DT4
RCCKSEL3
COM4A1S
UMSEL11
FIFOCON
FLERRE
RCSUT1
COM4A1
TLOCK4
CFGOK
RXCIE1
PWM4X
ADDEN
DT4H3
Bit 7
USBE
RXC1
FPIE4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EPTYPE1:0
RCCKSEL2
COM4A0S
UMSEL10
UPRSME
RCSUT0
COM4A0
UPRSMI
NAKINE
OVERFI
TXCIE1
ENHC4
NAKINI
DT4H2
FPEN4
Bit 6
PSR4
TXC1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RCCKSEL1
EPSIZE2:0
COM4B1S
STALLRQ
UNDERFI
EORSME
EORSMI
OC4OE5
COM4B1
FRZCLK
EXSUT1
DTPS41
UDRIE1
UDRE1
DT4H1
UPM11
FPNC4
Bit 5
RWAL
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Timer/Counter4 - Output Compare Register D
Timer/Counter4 - Output Compare Register C
Timer/Counter4 - Output Compare Register B
Timer/Counter4 - Output Compare Register A
USART1 Baud Rate Register Low Byte
STALLRQC
RCCKSEL0
WAKEUPE
OTGPADE
NAKOUTE
COM4B0S
WAKEUPI
NAKOUTI
FNCERR
COM4B0
OC4OE4
EXSUT0
DTPS40
UPM10
RXEN1
DT4H0
USART1 I/O Data Register
FPES4
Bit 4
FE1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
FNUM7:0
BYCT7:0
DAT7:0
EXCKSEL3
COM4D1S
EORSTE
RSTCPU
RXSTPE
EPRST6:0
OC4OE3
EPINT6:0
EORSTI
RXSTPI
UADD6:0
RSTDT
FOC4A
USBS1
TXEN1
FPAC4
Bit 3
DT4L3
DOR1
CS43
RCE
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
DTSEQ1:0
EPBK1:0
USART1 Baud Rate Register High Byte
EXCKSEL2
COM4D0S
CTRLDIR
RXOUTE
OC4OE2
RXOUTI
UCSZ11
UCSZ12
FOC4B
Bit 2
DT4L2
SOFE
EXTE
CS42
SOFI
FPF4
LSM
PE1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Timer/Counter4 High Byte
STALLEDE
EXCKSEL1
STALLEDI
RMWKUP
EPNUM2:0
FNUM10:8
BYCT10:8
OC4OE1
UCSZ10
MSOFE
WGM41
PWM4A
FOC4D
ALLOC
MSOFI
RXB81
DT4L1
RCON
Bit 1
U2X1
CS41
ID
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ATmega16/32U4
NBUSYBK1:0
CURRBK1:0
EXCKSEL0
UVREGE
DETACH
VBUSTE
UCPOL1
OC4OE0
VBUSTI
MPCM1
WGM40
PWM4D
PWM4B
SUSPE
EXTON
EPDIR
SUSPI
DT4L0
TXB81
Bit 0
TXINE
EPEN
VBUS
CLKS
TXINI
CS40
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Page
408