ATXMEGA256A3-MU Atmel, ATXMEGA256A3-MU Datasheet - Page 10

• Manufacturer Part Number: ATXMEGA256A3-MU
• Description: 8-bit Microcontrollers - MCU 8/16 bit 1.6V-3.6V 256KB + 8KB
• Manufacturer: Atmel

Specifications of ATXMEGA256A3-MU

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: AVR
• Data Bus Width: 8 bit/16 bit
• Maximum Clock Frequency: 32 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 16 KB
• On-chip Adc: Yes
• Package / Case: QFN EP
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 8
• Data Rom Size: 4 KB
• Interface Type: I2C, SPI, USART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 50
• Number Of Timers: 7
• Processor Series: ATXMega
• Program Memory Type: Flash
• Factory Pack Quantity: 260
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 1.6 V

7.3
8068T–AVR–12/10
In-System Programmable Flash Program Memory
The XMEGA A3 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-
gram Memory (SPM) instruction must reside in the Boot Section when used to write to the Flash
memory.
A third section inside the Application section is referred to as the Application Table section which
has separate Lock bits for storage of write or read/write protection. The Application Table sec-
tion can be used for storing non-volatile data or application software.
Figure 7-1.
The Application Table Section and Boot Section can also be used for general application
software.
Figure 7-1 on page
Flash Program Memory (Hexadecimal address)
1EFFF
1FFFF
20FFF
1F000
20000
Word Address
/
/
/
/
/
16FFF
17FFF
18FFF
17000
18000
10. Since all AVR instructions are 16- or 32-bits wide, each
/
/
/
/
/
10FFF
10000
EFFF
FFFF
F000
/
/
/
/
/
7FFF
77FF
87FF
7800
8000
0
(256 KB/192 KB/128 KB/64 KB)
Application Table Section
(8 KB/8 KB/8 KB/4 KB)
(8 KB/8 KB/8 KB/4 KB)
Application Section
Boot Section
XMEGA A3
...
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