ATXMEGA256A3B-AU Atmel, ATXMEGA256A3B-AU Datasheet - Page 3

• 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

2. Pinout/Block Diagram
Figure 2-1.
Notes:
8116I–AVR–09/10
INDEX CORNER
1. For full details on pinout and pin functions refer to
2. The large center pad underneath the QFN/MLF package should be soldered to ground on the board to ensure good
mechanical stability.
Block diagram and pinout.
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
GND
VCC
PC0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ADC A
ADC B
DAC B
AC A0
AC A1
AC B0
AC B1
Port C
”Pinout and Pin Functions” on page
Watchdog
OSC/CLK
Port R
Contro l
Contro l
Contro l
Power
Reset
EVENT ROUTING N E TWORK
Port D
TEMP
BOD
Interrupt Controlle r
DAT A BU S
DAT A BU S
Event System ctrl
DMA
CPU
Bat t Backup
Port E
VREF
RTC
E
FLASH
2
RAM
PROM
POR
OCD
Port F
50.
XMEGA A3B
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
PF2
PF1
PF0
VCC
GND
TOSC1
TOSC2
PE5
PE4
PE3
PE2
PE1
PE0
VCC
GND
PD7
3