ATXMEGA256A3B-AU Atmel, ATXMEGA256A3B-AU Datasheet - Page 35

• 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

18. Hi-Res - High Resolution Extension
18.1
18.2
8116I–AVR–09/10
Features
Overview
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•
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The Hi-Resolution (Hi-Res) Extension is able to increase the resolution of the waveform genera-
tion output by a factor of 4. When enabled for a Timer/Counter, the Fast Peripheral clock running
at four times the CPU clock speed will be as input to the Timer/Counter.
The High Resolution Extension can also be used when an AWEX is enabled and used with a
Timer/Counter.
XMEGA A3B devices have four Hi-Res Extensions that each can be enabled for each
Timer/Counters pair on PORTC, PORTD, PORTE and PORTF. The notation of these are
HIRESC, HIRESD, HIRESE and HIRESF, respectively.
Increases Waveform Generator resolution by 2-bits (4x)
Supports Frequency, single- and dual-slope PWM operation
Supports the AWEX when this is enabled and used for the same Timer/Counter
XMEGA A3B
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