ATxmega256A3BU Atmel Corporation, ATxmega256A3BU Datasheet - Page 190

• Manufacturer Part Number: ATxmega256A3BU
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3BU

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 47
• Ext Interrupts: 49
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 8
• Twi (i2c): 2
• Uart: 6
• 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
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 16
• Eeprom (bytes): 4096
• 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: 7
• Output Compare Channels: 22
• Input Capture Channels: 22
• Pwm Channels: 22
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

15.3
15.4
8331A–AVR–07/11
Block Diagram
Clock Sources
Figure 15-1. 16-bit Timer/Counter0 with Split Mode Block Diagraml
The Timer/Counter can be clocked from the Peripheral Clock (clk
tem.
Figure 15-2
Base Counter
shows the clock and event selection.
A
Counter
B
HPER
HCNT
C
CTRL
= 0
D
LPER
LCNT
E
I/O Data Bus (8-bit)
F
= 0
=
HCMPx
=
LCMPx
INTCTRL
BOTTOML
BOTTOMH
A
Clock Select
"count high"
"load high"
"count low"
"load low"
"match"
"match"
CLKSEL
Atmel AVR XMEGA AU
B
Generation
Generation
Waveform
Waveform
(Unit x = {A,B,C,D})
(Unit x = {A,B,C,D})
Control Logic
INTFLAGS
PER
Compare
Compare
) and from the Event Sys-
LUNF/HUNF
(INT/DMA Req.)
OCLx Out
LCMPx
(INT/DMA
Req.)
OCHx Out
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