ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 30
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ATxmega256A3U
Manufacturer Part Number
ATxmega256A3U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega256A3U
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
50
Ext Interrupts
50
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
10
Twi (i2c)
2
Uart
7
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega256A3U-AU
Manufacturer:
TI
Quantity:
12 000
Part Number:
ATxmega256A3U-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATxmega256A3U-MH
Manufacturer:
PANASONIC
Quantity:
1 450
- Current page: 30 of 505
- Download datasheet (8Mb)
4.16
4.16.1
4.16.2
4.16.3
8331A–AVR–07/11
Register Descriptions – Fuses and Lockits
FUSEBYTE0 – Nonolatile Memory Fuse Byte 0
FUSEBYTE1 – Nonolatile Memory Fuse Byte1
FUSEBYTE2 – Nonolatile Memory Fuse Byte2
• Bit 7 – JTAGUID[7:0]: JTAG USER ID
These fuses can be used to set the default JTAG user ID for the device. During reset, the
JTAGUID fuse bits will be loaded into the MCU JTAG user ID register.
• Bit 7:4 – WDWPER[3:0]: Watchdog Window Timeout Period
These fuse bits are used to set initial value of the closed window for the Watchdog Timer in Win-
dow Mode. During reset these fuse bits are automatically written to the WPER bits Watchdog
Window Mode Control Register, refer to
129
• Bit 3:0 – WDPER[3:0]: Watchdog Timeout Period
These fuse bits are used to set the initial value of the watchdog timeout period. During reset
these fuse bits are automatically written to the PER bits in the watchdog control register. Refer to
”CTRL – Watchdog Timer Control Register” on page 128
• Bit 7 – Reserved
This fuse bit is reserved. For compatibility with future devices, always write this bit to one when
this register is written.
Bit
+0x02
Read/Write
Initial Value
Bit
+0x00
Read/Write
Initial Value
Bit
+0x01
Read/Write
Initial Value
for details.
R/W
R/W
R/W
7
–
1
7
0
7
0
BOOTRST
R/W
R/W
WDWPER[3:0]
6
0
6
0
R/W
6
1
R/W
R/W
5
0
5
0
TOSCSEL
R/W
5
1
”WINCTRL – Window Mode Control Register” on page
R/W
R/W
4
0
4
0
JTAGUID[7:0]
R/W
4
–
1
R/W
R/W
3
0
3
0
Atmel AVR XMEGA AU
R/W
3
–
1
for details.
R/W
R/W
2
0
2
0
WDPER[3:0]
R/W
2
–
1
R/W
R/W
1
0
1
0
R/W
1
1
BODPD[1:0]
R/W
R/W
0
0
0
0
R/W
0
1
FUSEBYTE0
FUSEBYTE1
FUSEBYTE2
30
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