ATxmega16A4 Atmel Corporation, ATxmega16A4 Datasheet - Page 19
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ATxmega16A4
Manufacturer Part Number
ATxmega16A4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega16A4
Flash (kbytes)
16 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Speed
No
Usb Interface
No
Spi
7
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)
3.3
Eeprom (bytes)
1024
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:
ATxmega16A4U-AU
Manufacturer:
SAMSUNG
Quantity:
514
Part Number:
ATxmega16A4U-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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4.3
8077H–AVR–12/09
Flash Program Memory
spaces can be locked for further write and read/write operations. This prevents unrestricted
access to the application software.
A separate memory section contains the Fuse bytes. These are used for setting important sys-
tem functions, and write access is only possible from an external programmer.
The XMEGA contains On-chip In-System Reprogrammable Flash memory for program storage.
The Flash memory can be accessed for read and write both from an external programmer
through the PDI, or from application software running in the CPU.
All AVR instructions are 16 or 32 bits wide, and each Flash location is 16 bits wide. The Flash
memory in XMEGA is organized in two main sections, the Application Section and the Boot
Loader section, as shown in
but device dependent. These two sections have separate lock bits and can have different level
of protection. The Store Program Memory (SPM) instruction used to write to the Flash from the
application software, will only operate when executed from the Boot Loader Section.
The Application Section contains an Application Table Section with separate lock settings. This
can be used for safe storage of Non-volatile data in the Program Memory.
Figure 4-1.
Flash Memory sections
Boot Loader Flash
Figure 4-1 on page
Application Table
Application Flash
Flash Section
Section
Section
19. The sizes of the different sections are fixed,
0x000000
End RWW, End Application
Start NRWW, Start Boot Loader
Flashend
XMEGA A
19
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