ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 427
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:
74
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33. Memory Programming
33.1
33.2
8331A–AVR–07/11
Features
Overview
•
•
•
•
•
This section describes how to program the Non Volatile Memory (NVM) in XMEGA, and covers
both self-programming and external programming. The NVM consists of the Flash Program
Memory, User Signature and Calibration rows, Fuses and Lock Bits, and EEPROM data mem-
ory. For details on the actual memories, how they are organized and the register description for
the NVM Controller used to access the memories, refer to
The NVM can be accessed for read and write both from application software through self-pro-
gramming and from an external programmer. Accessing the NVM is done through the NVM
Controller, and the two methods of programming are similar. Memory access is done by loading
address and/or data to the NVM or NVM Controller, and using a set of commands and triggers
that make the NVM Controller perform specific tasks on the NVM.
From external programming all memory spaces can be read and written, except for the Produc-
tion Signature row which can only be read. The device can be programmed in-system and is
accessed through the PDI using the PDI or JTAG physical interfaces,
on page 443
Self-programming and Boot Loader support allows application software in the device to read and
write the Flash, User Signature row and EEPROM, write the Lock Bits to a more secure setting,
and read the Production Signature row and Fuses. The Flash allows Read-While-Write self-pro-
gramming meaning that the CPU can continue to operate and execute code while the Flash is
being programmed.
detail.
For both self-programming and external programming it is possible to run a CRC check on the
Flash or a section of the Flash to verify its content after programming.
Read and Write access to all memory spaces from
Self-Programming and Boot Loader Support
External Programming
High Security with Separate Boot Lock Bits for
Reset Fuse to Select Reset Vector address to the start of the
– External programmers
– Application Software Self-Programming
– Read-While-Write Self-Programming
– CPU can run and execute code while Flash is being programmed
– Any communication interface can be used for program upload/download
– Support for in-system and production programming
– Programming through serial PDI or JTAG interface
– External programming access
– Boot Loader Section access
– Application Section access
– Application Table access
– Application Section, or
– Boot Loader Section
describes PDI and JTAG in detail.
”Self-Programming and Boot Loader Support” on page 432
Atmel AVR XMEGA AU
”Memories” on page
”External Programming”
19.
describes this in
427
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