ATmega32U2 Atmel Corporation, ATmega32U2 Datasheet - Page 7

• Manufacturer Part Number: ATmega32U2
• Manufacturer: Atmel Corporation

Specifications of ATmega32U2

• Flash (kbytes): 32 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 22
• Ext Interrupts: 20
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 1
• 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: 2
• Output Compare Channels: 5
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

6. Register Summary
7799DS–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
UESTA1X
UESTA0X
CLKSEL1
CLKSEL0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
UECONX
Reserved
UDADDR
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
USBCON
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
UEBCLX
UEDATX
UBRR1H
UCSR1D
UCSR1C
UCSR1B
UCSR1A
CLKSTA
UBRR1L
Name
UEIENX
UENUM
UEINTX
UDMFN
UDCON
UERST
UDIEN
UDINT
UPOE
UEINT
UDR1
RCCKSEL3
UMSEL11
FIFOCON
FLERRE
RCSUT1
UPWE1
RXCIE1
CFGOK
ADDEN
Bit 7
USBE
RXC1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EPTYPE1:0
RCCKSEL2
UMSEL10
UPRSME
RCSUT0
UPRSMI
UPWE0
NAKINE
OVERFI
NAKINI
TXCIE1
Bit 6
TXC1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RCCKSEL1
EPSIZE2:0
STALLRQ
UNDERFI
EORSME
UPDRV1
EORSMI
FRZCLK
EXSUT1
UDRIE1
UDRE1
UPM11
Bit 5
RWAL
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
USART1 Baud Rate Register Low Byte
STALLRQC
RCCKSEL0
WAKEUPE
NAKOUTE
WAKEUPI
NAKOUTI
FNCERR
UPDRV0
EXSUT0
RPUTX
UPM10
RXEN1
USART1 I/O Data Register
Bit 4
FE1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
FNUM7:0
BYCT7:0
DAT7:0
EXCKSEL3
EORSTE
RXSTPE
EORSTI
RXSTPI
UADD6:0
RSTDT
USBS1
TXEN1
Bit 3
DOR1
SCKI
RCE
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
DTSEQ1:0
EPBK1:0
USART1 Baud Rate Register High Byte
EXCKSEL2
CTRLDIR
RXOUTE
RSTCPU
EPRST4:0
RXOUTI
UCSZ11
UCSZ12
EPINT4:0
ATmega8U2/16U2/32U2
Bit 2
DATAI
SOFE
EXTE
SOFI
PE1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
STALLEDE
EXCKSEL1
STALLEDI
RMWKUP
EPNUM2:0
FNUM10:8
UCSZ10
CTSEN
ALLOC
RXB81
RCON
Bit 1
U2X1
DPI
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
NBUSYBK1:0
CURRBK1:0
EXCKSEL0
DETACH
UCPOL1
MPCM1
SUSPE
EXTON
RTSEN
EPDIR
SUSPI
TXB81
Bit 0
TXINE
EPEN
CLKS
TXINI
DMI
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
page 195
page 222
page 221
page 221
page 220
page 218
page 217
page 216
page 215
page 214
page 214
page 214
page 219
page 213
page 213
page 213
page 212
page 211
page 210
page 209
page 195
page 167
page 171
page 171
page 171
page 169
page 168
page 167
page 38
page 38
page 37
Page
7