ATxmega128A4U Atmel Corporation, ATxmega128A4U Datasheet - Page 309

• 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

8331A–AVR–07/11
• Bits 5:4 – PMODE[1:0]: Parity Mode
These bits enable and set the type of parity generation according to
When enabled, the transmitter will automatically generate and send the parity of the transmitted
data bits within each frame. The receiver will generate a parity value for the incoming data and
compare it to the PMODE setting, and if a mismatch is detected, the PERR flag in STATUS will
be set.
These bits are unused in master SPI mode operation.
Table 23-7.
• Bit 3 – SBMODE: Stop Bit Mode
This bit selects the number of stop bits to be inserted by the transmitter according to
on page
This bit is unused in master SPI mode operation.
Table 23-8.
• Bit 2:0 – CHSIZE[2:0]: Character Size
The CHSIZE[2:0] bits set the number of data bits in a frame according to
309. The receiver and transmitter use the same setting.
Table 23-9.
PMODE[1:0]
CHSIZE[2:0]
309. The receiver ignores this setting.
000
001
010
011
100
101
110
111
00
01
10
11
PMODE bit settings.
SBMODE bit settings.
CHSIZE bit settings.
SBMODE
0
1
Group Configuration
Group Configuration
DISABLED
EVEN
ODD
5BIT
6BIT
7BIT
8BIT
9BIT
Parity Mode
Disabled
Reserved
Enabled, even parity
Enabled, odd parity
Character Size
5-bit
6-bit
7-bit
8-bit
Reserved
Reserved
Reserved
9-bit
Stop Bit(s)
1
2
Atmel AVR XMEGA AU
Table 23-7 on page
Table 23-9 on page
Table 23-8
309.
309