ATxmega256D3 Atmel Corporation, ATxmega256D3 Datasheet - Page 9

• Manufacturer Part Number: ATxmega256D3
• Manufacturer: Atmel Corporation

Specifications of ATxmega256D3

• 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 Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 2
• Uart: 3
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 200
• Analog Comparators: 2
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• 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: 5
• Output Compare Channels: 18
• Input Capture Channels: 18
• Pwm Channels: 18
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

7. Memories
7.1
7.2
7.3
8134I–AVR–12/10
Features
Overview
In-System Programmable Flash Program Memory
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•
•
•
The AVR architecture has two main memory spaces, the Program Memory and the Data Mem-
ory. In addition, the XMEGA D3 features an EEPROM Memory for non-volatile data storage. All
three memory spaces are linear and require no paging. The available memory size configura-
tions are shown in
memory signature row for calibration data, device identification, serial number etc.
Non-volatile memory spaces can be locked for further write or read/write operations. This pre-
vents unrestricted access to the application software.
The XMEGA D3 devices contains On-chip In-System Programmable Flash memory for program
storage, see
Flash address location is 16 bits.
The Program Flash memory space is divided into Application and Boot sections. Both sections
have dedicated Lock Bits for setting restrictions on write or read/write operations. The Store Pro-
Flash Program Memory
Data Memory
Production Signature Row Memory for factory programmed data
User Signature Row
– One linear address space
– In-System Programmable
– Self-Programming and Bootloader support
– Application Section for application code
– Application Table Section for application code or data storage
– Boot Section for application code or bootloader code
– Separate lock bits and protection for all sections
– One linear address space
– Single cycle access from CPU
– SRAM
– EEPROM
– I/O Memory
Byte and page accessible
Optional memory mapping for direct load and store
Configuration and Status registers for all peripherals and modules
16 bit-accessible General Purpose Register for global variables or flags
Device ID for each microcontroller device type
Serial number for each device
Oscillator calibration bytes
ADC and temperature sensor calibration data
One flash page in size
Can be read and written from software
Content is kept after chip erase
Figure 7-1 on page
”Ordering Information” on page
10. Since all AVR instructions are 16- or 32-bits wide, each
2. In addition each device has a Flash
XMEGA D3
9