ATxmega64B3 Atmel Corporation, ATxmega64B3 Datasheet - Page 21
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ATxmega64B3
Manufacturer Part Number
ATxmega64B3
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64B3
Flash (kbytes)
64 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
36
Ext Interrupts
36
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
1
Segment Lcd
100
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
2
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
4
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
2
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
10.3
8074A–AVR–10/11
Clock Sources
Figure 10-1. The Clock system, clock sources and clock distribution.
The clock sources are divided in two main groups: internal oscillators and external clock
sources. Most of the clock sources can be directly enabled and disabled from software, while
others are automatically enabled or disabled, depending on peripheral settings. After reset, the
device starts up running from the 2MHz internal oscillator. The other clock sources, DFLLs and
PLL, are turned off by default.
The internal oscillators do not require any external components to run. For details on character-
istics and accuracy of the internal oscillators, refer to the device datasheet.
Brown-out
Detector
LCD
clk
LCD
Watchdog
Int. ULP
32 kHz
Timer
Real Time
Counter
clk
32.768 kHz
Int. OSC
RTC
RTCSRC
Peripherals
32.768 kHz
TOSC
clk
PER4
clk
XOSCSEL
PER2
clk
PER
0.4 – 16 MHz
System Clock Prescalers
System Clock Multiplexer
XTAL
RAM
clk
(SCLKSEL)
SYS
32 MHz
Int. Osc
PLLSRC
PLL
AVR CPU
XMEGA B3
clk
Int. Osc
2 MHz
CPU
clk
Non-Volatile
Prescaler
Memory
USB
USBSRC
USB
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