ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 329
ATxmega64A4U
Manufacturer Part Number
ATxmega64A4U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64A4U
Flash (kbytes)
64 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
2
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)
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
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A4U-AU
Manufacturer:
ON
Quantity:
29 000
Company:
Part Number:
ATxmega64A4U-U
Manufacturer:
ATMEL
Quantity:
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26.7.5
26.7.6
26.7.7
8331A–AVR–07/11
CHECKSUM1 – Checksum Byte 1
CHECKSUM2 – Checksum Byte 2
CHECKSUM3 – CRC Checksum Byte 3
possible to write RESET to reset all bits to one. It is possible to write these registers only when
the CRC module is disabled. If NVM is selected as the source, reading CHECKSUM will return a
zero value until the BUSY flag is cleared. If CRC-32 is selected and the BUSY flag is cleared
(i.e., CRC generation is completed or aborted), the bit reversed (bit 31 is swapped with bit 0, bit
30 with bit 1, etc.) and complemented result will be read from CHECKSUM. If CRC-16 is
selected or the BUSY flag is set (i.e., CRC generation is ongoing), CHECKSUM will contain the
actual content.
• Bit 7:0 – CHECKSUM[7:0]
These bits hold byte 0 of the generated CRC.
• Bit 7:0 – CHECKSUM[15:8]
These bits hold byte 1 of the generated CRC.
• Bit 7:0 – CHECKSUM[23:16]
These bits hold byte 2 of the generated CRC when CRC-32 is used.
• Bit 7:0 – CHECKSUM[31:24]
These bits hold byte 3 of the generated CRC when CRC-32 is used.
Bit
+0x05
Read/Write
Initial Value
Bit
+0x06
Read/Write
Initial Value
Bit
+0x04
Read/Write
Initial Value
Bit
+0x07
Read/Write
Initial Value
R/W
R/W
R/W
R/W
7
0
7
0
7
0
7
0
R/W
R/W
R/W
R/W
6
0
6
0
6
0
6
0
R/W
R/W
R/W
R/W
5
0
5
0
5
0
5
0
R/W
R/W
CHECKSUM[15:8]
CHECKSUM[23:16]
R/W
CHECKSUM[31:24]
CHECKSUM[7:0]
R/W
4
0
4
0
4
0
4
0
R/W
R/W
R/W
R/W
3
0
3
0
3
0
3
0
Atmel AVR XMEGA AU
R/W
R/W
R/W
2
0
R/W
2
0
2
0
2
0
R/W
R/W
R/W
1
0
1
0
R/W
1
0
1
0
R/W
R/W
0
0
R/W
0
0
R/W
0
0
0
0
CHECKSUM0
CHECKSUM1
CHECKSUM2
CHECKSUM3
329
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