ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 57

• Manufacturer Part Number: ATxmega128B1
• Manufacturer: Atmel Corporation

Specifications of ATxmega128B1

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 53
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Segment Lcd: 160
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 4
• Resistive Touch Screen: No
• 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: 3
• Output Compare Channels: 10
• Input Capture Channels: 10
• Pwm Channels: 10
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8291A–AVR–10/11
• Bit 2 – SINGLE: Single-Shot Data transfer
Setting this bit enables the single-shot mode. The channel will then do a burst transfer of
BURSTLEN bytes on the transfer trigger. A write to this bit will be ignored while the channel is
enabled.
• Bit 1:0 – BURSTLEN[1:0]: Burst Mode
These bits decide the DMA channel burst mode according to
cannot be changed if the channel is busy.
Table 5-3.
Table 5-4.
REPEAT
0
0
0
0
0
0
1
1
1
1
1
1
BURSTLEN[1:0]
00
01
10
11
SINGLE
DMA channel burst mode.
Summary of triggers, transcation complete flag and channel disable according to
DMA channel configuration.
0
0
0
1
1
1
0
0
0
1
1
1
REPCNT
n > 1
n > 1
n > 1
n > 1
0
1
0
1
0
1
0
1
Group Configuration
Block
Block
Block
BURSTLEN
BURSTLEN
BURSTLEN
Block
Transaction
Transaction
BURSTLEN
BURSTLEN
BURSTLEN
Trigger
1BYTE
2BYTE
4BYTE
8BYTE
Flag Set After
1 block
1 block
1 block
1 block
1 block
1 block
Each block
1 block
n blocks
Each block
1 block
n blocks
Atmel AVR XMEGA B
Table 5-3 on page
Description
1 byte burst mode
2 bytes burst mode
4 bytes burst mode
8 bytes burst mode
1 block
1 block
1 block
Each block
1 block
n blocks
1 block
n blocks
Channel Disabled After
1 block
1 block
1 block
Never
57. These bits
57