ATXMEGA256A3B-AU Atmel, ATXMEGA256A3B-AU Datasheet - Page 104

• Manufacturer Part Number: ATXMEGA256A3B-AU
• Description: MCU AVR 256KB FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® XMEGAr

Specifications of ATXMEGA256A3B-AU

• Core Processor: AVR
• Core Size: 8/16-Bit
• Speed: 32MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Size: 256KB (128K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 3.6 V
• Data Converters: A/D 16x12b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Controller Family/series: ATXMEGA
• No. Of I/o's: 49
• Eeprom Memory Size: 4KB
• Ram Memory Size: 16KB
• Cpu Speed: 32MHz
• Rohs Compliant: Yes
• Processor Series: XMEGA
• Core: AVR
• Data Bus Width: 8 bit, 16 bit
• Data Ram Size: 16 KB
• Interface Type: SPI, TWI, USART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 49
• Number Of Timers: 7
• Operating Supply Voltage: 2.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table of Contents
8116I–AVR–09/10
1
2
3
4
5
6
7
8
9
10 System Clock and Clock options ......................................................... 17
Features ..................................................................................................... 1
Typical Applications ................................................................................ 1
Ordering Information ............................................................................... 2
Pinout/Block Diagram .............................................................................. 3
Overview ................................................................................................... 4
Resources ................................................................................................. 6
Disclaimer ................................................................................................. 6
AVR CPU ................................................................................................... 7
Memories .................................................................................................. 9
DMAC - Direct Memory Access Controller .......................................... 14
Event System ......................................................................................... 15
3.1Block Diagram ...........................................................................................................5
4.1Recommended reading .............................................................................................6
6.1Features ....................................................................................................................7
6.2Overview ...................................................................................................................7
6.3Register File ..............................................................................................................8
6.4ALU - Arithmetic Logic Unit .......................................................................................8
6.5Program Flow ............................................................................................................8
7.1Features ....................................................................................................................9
7.2Overview ...................................................................................................................9
7.3In-System Programmable Flash Program Memory .................................................10
7.4Data Memory ...........................................................................................................10
7.5Production Signature Row .......................................................................................12
7.6User Signature Row ................................................................................................12
7.7Flash and EEPROM Page Size ...............................................................................13
8.1Features ..................................................................................................................14
8.2Overview .................................................................................................................14
9.1Features ..................................................................................................................15
9.2Overview .................................................................................................................15
10.1Features ................................................................................................................17
XMEGA A3B
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