ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 436
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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33.11.2.7
33.11.2.8
33.11.2.9
8331A–AVR–07/11
Erase Application Section
Erase Application Section / Boot Loader Section Page
Application Section / Boot Loader Section Page Write
The BUSY flag in the NVM STATUS register will be set, and the CPU is halted during the execu-
tion of the command.
The CRC checksum will be available in the NVM DATA register.
In order to use the Flash Range CRC all the Boot Lock Bits must be unprogrammed (no locks).
The command execution will be aborted if the Boot Lock Bits for an accessed location are set.
The Erase Application command is used to erase the complete Application Section.
The BUSY flag in the STATUS register will be set until the operation is finished. The CPU will be
halted during the complete execution of the command.
The Erase Application Section Page Erase and Erase Boot Loader Section Page commands are
used to erase one page in the Application Section or Boot Loader Section.
The BUSY flag in the NVM STATUS register will be set until the erase operation is finished. The
FBUSY flag is set as long the Flash is Busy, and the Application section cannot be accessed.
The Write Application Section Page and Write Boot Loader Section Page commands are used to
write the Flash Page Buffer into one flash page in the Application Section or Boot Loader
Section.
The BUSY flag in the NVM STATUS register will be set until the write operation is finished. The
FBUSY flag is set as long the Flash is Busy, and the Application section cannot be accessed.
An invalid page address in the Z-pointer will abort the NVM command. The Erase Application
Section Page command requires that the Z-pointer addresses the Application section, and the
Erase Boot Section Page command requires that the Z-pointer addresses the Boot Loader
Section.
3. Load the end byte address in NVM Data Register (NVM DATA).
4. Set the CMDEX bit in the NVM CTRLA register. This requires the timed CCP sequence
1. Load the Z-pointer to point anywhere in the Application Section.
2. Load the NVM CMD register with the Erase Application Section command
3. Execute the SPM instruction. This requires the timed CCP sequence during self-
1. Load the Z-pointer with the flash page address to erase. The page address must be
2. Load the NVM CMD register with the Erase Application/Boot Section Page command.
3. Execute the SPM instruction. This requires the timed CCP sequence during self-
1. Load the Z-pointer with the flash page to write. The page address must be written to
2. Load the NVM CMD register with the Write Application Section/Boot Loader Section
3. Execute the SPM instruction. This requires the timed CCP sequence during self-
during self-programming.
programming.
written to ZPAGE. Other bits in the Z-pointer will be ignored during this operation.
programming.
FPAGE. Other bits in the Z-pointer will be ignored during this operation.
Page command.
programming.
Atmel AVR XMEGA AU
436
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