ATxmega128A4U Atmel Corporation, ATxmega128A4U Datasheet - Page 311

• Manufacturer Part Number: ATxmega128A4U
• Manufacturer: Atmel Corporation

Specifications of ATxmega128A4U

• Flash (kbytes): 128 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 7
• Twi (i2c): 2
• Uart: 5
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 2
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 8
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 5
• Output Compare Channels: 16
• Input Capture Channels: 16
• Pwm Channels: 16
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

23.16 Register Summary
23.16.1
23.16.2
23.17 Interrupt Vector Summary
Table 23-10. USART interrupt vectors and their word offset address.
8331A–AVR–07/11
+0x05+0x05+
+0x05+0x05
Address
Address
+0x00
+0x01
+0x02
+0x03
+0x04
+0x06
+0x07
+0x00
+0x01
+0x02
+0x03
+0x04
+0x06
+0x07
Offset
0x00
0x02
0x04
Register Description - USART
Register Description - USART in SPI Master Mode
Name
Name
BAUDCTRLA
BAUDCTRLB
BAUDCTRLA
BAUDCTRLB
Reserved
STATUS
Reserved
CTRLA
CTRLB
CTRLC
STATUS
DATA
CTRLC
CTRLA
CTRLB
DATA
RXCIF
Bit 7
RXCIF
Bit 7
RXC_vect
DRE_vect
TXC_vect
–
–
–
Source
CMODE[1:0]
–
–
–
CMODE[1:0]
Bit 6
TXCIF
Bit 6
TXCIF
–
–
–
–
–
–
BSCALE[3:0]
BSCALE[3:0]
Interrupt Description
USART receive complete interrupt vector
USART data register empty interrupt vector
USART transmit complete interrupt vector
Bit 5
DREIF
–
–
DREIF
Bit 5
RXCINTLVL[1:0]
–
–
–
PMODE[1:0]
RXCINTLVL[1:0]
Bit 4
FERR
RXEN
–
Bit 4
RXEN
–
–
–
DATA[7:0]
BSEL[7:0]
DATA[7:0]
BSEL[7:0]
SBMODE
BUFOVF
Bit 3
TXEN
–
Bit 3
TXEN
TXCINTLVL[1:0]
–
–
–
TXCINTLVL[1:0]
Atmel AVR XMEGA AU
CLK2X
Bit 2
PERR
–
UDORD
Bit 2
–
–
–
BSEL[11:8]
BSEL[11:8]
CHSIZE[2:0]
UCPHA
MPCM
Bit 1
Bit 1
–
–
–
–
–
DREINTLVL[1:0]
DREINTLVL[1:0]
Bit 0
Bit 0
RXB8
TXB8
–
–
–
–
–
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