ATXMEGA192D3-MH View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATXMEGA192D3-MH

8/16-bit XMEGA D3 Microcontroller

Atmel Corporation 

XMEGA D3

7. Memories

7.1 Features

7.2 Overview

• Flash Program Memory

– 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

• Data Memory

– One linear address space

– Single cycle access from CPU

– SRAM

– EEPROM

Byte and page accessible

Optional memory mapping for direct load and store

– I/O Memory

Configuration and Status registers for all peripherals and modules

16 bit-accessible General Purpose Register for global variables or flags

• Production Signature Row Memory for factory programmed data

Device ID for each microcontroller device type

Serial number for each device

Oscillator calibration bytes

ADC and temperature sensor calibration data

• User Signature Row

One flash page in size

Can be read and written from software

Content is kept after chip erase

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 ”Ordering Information” on page 2. In addition each device has a Flash

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.

7.3 In-System Programmable Flash Program Memory

The XMEGA D3 devices contains On-chip In-System Programmable Flash memory for program

storage, see Figure 7-1 on page 10. Since all AVR instructions are 16- or 32-bits wide, each

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-

9

8134I–AVR–12/10

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