ATXMEGA384A1-CU ATMEL [ATMEL Corporation], ATXMEGA384A1-CU Datasheet - Page 9

• Manufacturer Part Number: ATXMEGA384A1-CU
• Description: 8/16-bit XMEGA A1 Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

7. Memories
7.1
7.2
7.3
8067D–AVR–08/08
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 A1 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 A1 devices contains On-chip In-System Programmable Flash memory for program
storage, see
Flash address location is 16 bits.
Flash Program Memory
Data Memory
Calibration 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
– External Memory support
– Bus arbitration
– Separate buses for SRAM, EEPROM, I/O Memory and External Memory access
Byte or 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
Safe and deterministic handling of CPU and DMA Controller priority
Simultaneous bus access for CPU and DMA Controller
Oscillator calibration bytes
Serial number
Device ID for each device type
One flash page in size
Can be read and written from software
Data 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 A1
9