ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 6

MCU AVR 256KB FLASH A3B 64-QFN

ATXMEGA256A3B-MH

Manufacturer Part Number
ATXMEGA256A3B-MH
Description
MCU AVR 256KB FLASH A3B 64-QFN
Manufacturer
Atmel
Series
AVR® XMEGAr
Datasheets

Specifications of ATXMEGA256A3B-MH

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-MLF®, 64-QFN
Processor Series
ATXMEGA256x
Core
AVR8
Data Bus Width
8 bit, 16 bit
Data Ram Size
16 KB
Interface Type
I2C, SPI, USART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
49
Number Of Timers
7
Operating Supply Voltage
1.6 V to 3.6 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
On-chip Adc
12 bit, 8 Channel
On-chip Dac
12 bit, 2 Channel
For Use With
ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATXMEGA256A3B-MU
ATXMEGA256A3B-MU

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATXMEGA256A3B-MH
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
8077H–AVR–12/09
Figure 3-1.
The Arithmetic Logic Unit (ALU) supports arithmetic and logic operations between registers or
between a constant and a register. Single register operations can also be executed in the ALU.
After an arithmetic operation, the Status Register is updated to reflect information about the
result of the operation.
The ALU is directly connected to the fast-access Register File. The 32 x 8-bit general purpose
working registers all have single clock cycle access time allowing single-cycle Arithmetic Logic
Unit (ALU) operation between registers or between a register and an immediate. Six of the 32
registers can be used as three 16-bit address pointers for program and data space addressing -
enabling efficient address calculations.
The memory spaces are all linear and regular memory maps. The Data Memory space and the
Program Memory space are two different memory spaces.
The Data Memory space is divided into I/O registers and SRAM. In addition the EEPROM can
be memory mapped in the Data Memory.
All I/O status and control registers reside in the lowest 4K bytes addresses of the Data Memory.
This is referred to as the I/O Memory space. The lowest 64 addresses can be accessed directly,
or as the data space locations from 0x00 - 0x3F. The rest is the Extended I/O Memory space,
ranging from 0x40 to 0x1FFF. I/O registers here must be access as data space locations using
load (LD/LDS/LDD) and store (ST/STS/STD) instructions.
Peripheral
Module 1
Block Diagram of the AVR Architecture
CONTROL
STATUS/
Program
Counter
OCD
Peripheral
Module n
Instruction
Instruction
Program
Register
Memory
Decode
Flash
DATA BUS
SRAM
DATA BUS
ALU
EEPROM
32 x 8 General
Registers
Multiplier/
Purpose
DES
PMIC
XMEGA A
6

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