Part Number: ATXMEGA256A3U-AU

Manufacturer: Microchip Technology

Description: IC MCU 8/16BIT 256KB FLSH 64TQFP

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of ATXMEGA256A3U-AU

Datasheet  ATXMEGA256A3U-AU datasheet
Category Integrated Circuits (ICs)
Family Embedded – Microcontrollers
Manufacturer Atmel
Series AVR? XMEGA? A3U
Packaging Tray
Part Status Active
Core Processor AVR
Core Size 8/16-Bit
Speed 32MHz
Connectivity I2C, IrDA, SPI, UART/USART, USB
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number of I/O 50
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 (TA)
Package / Case 64-TQFP
Supplier Device Package 64-TQFP (14×14)

ATXMEGA256A3U-AU Description

Atmel’s AVR XMEGA is a family of 8/16-bit microcontrollers with low power consumption while maintaining high performance. They feature an improved RISC architecture and are available in a wide selection of individualized configurations to choose from. The AVR XMEGA chip enables the system designer to strike a balance between the amount of power consumed by the system and the amount of processing performance that is achieved by the system.

The AVR’s central processing unit (CPU) includes 32 working registers that may be used for any task, as well as an entire instruction set. One instruction can access two different registers, and the entire operation only takes one cycle of the clock to complete because all 32 registers are directly tied to the ALU. Because of this, which is made feasible by the fact that the ALU has direct access to all registers, this is conceivable. The unique architecture delivers greater throughput and code efficiency compared to traditional single-accumulator or CISC-based microcontrollers. This is a direct result of the aforementioned and comes about as a direct consequence.

Detailed Description

The following is what you should anticipate from AVR XMEGA A3U devices: internal programmable flash, EEPROM, and SRAM, a four-channel DMA controller, an eight-channel event system, and a programmable multilevel interrupt controller, 50 general-purpose I/O lines, a 16-bit real-time counter, seven flexible and PWM channels, seven USARTs, two two-wire serial interfaces (TWIs), one full-speed USB 2.0 interface, and three serial peripheral interfaces. Internal programs (SPIs),

The term “program and debug interface” refers to a quick interface with just two pins that may be used for programming and debugging (PDI). In addition to this, the devices come equipped with a JTAG interface that is compliant with IEEE standard 1149.1. This interface can even be used for programming, boundary scanning, and on-chip debugging. Five distinct modes for conserving power can be found in the firmware of ATx devices. Even though the central processing unit (CPU) is turned off while in idle mode, all peripherals, including SRAM, DMA controllers, event systems, and interrupt controllers, operate normally. Although the contents of SRAM and registers are kept, any further functionality that could have been enabled is blocked until the next time a TWI, USB resumption, pin-change interrupt, or reset occurs. Applications can keep a timer base operating even. At the same time, the rest of the device is inert because the asynchronous real-time clock continues to tick even when the device is turned to power-saving mode. In standby mode, the external crystal oscillator will continue to clock away even when the rest of the device is inactive.

Because of this, a quick initialization may be performed using the external crystal while only requiring little power. While in extended standby mode, the primary oscillator and the asynchronous timer continue to perform their functions. You may conserve even more power by turning off the peripheral clocks in both your computer’s active and idle sleep phases. This will allow you to save even more battery life.

With the assistance of Atmel’s free QTouch library, it will be possible for you to integrate capacitive touch controls such as buttons, sliders, and wheels into your AVR microcontroller. The manufacture of the devices makes use of the high-density non-volatile memory technology developed by Atmel. Reprogramming of the program flash memory can be done in-system thanks to the PDI and JTAG interfaces, respectively. Any of the interfaces supported by the boot loader can be used to download the application program to the device’s flash memory. Read-while-writing functionality can be maintained in the boot flash portion’s boot loader software even as the application flash section is being updated. This is referred to as “true read-while-writing.”

ATXMEGA256A3U-AU Features

Atmel’s AVR XMEGA 8/16-bit Microcontroller is a solution for challenging projects that combine outstanding performance and low power consumption. This makes it an attractive option for designers. It comes with various options for flash memory and SRAM memory, both of which can be used to store data and programs that are not intended to be lost when the power suddenly goes out. A few options are available to choose from, including a 64K–256KByte internal self-programmable flash, a 4K–8KByte boot section, a 2K–4KByte EEPROM, and a 4K–16KByte internal SRAM. There is also the option of making use of a boot section that ranges in size from 2,000 to 4,000 bytes.

Several auxiliary functions, including a timer/counter with seven 16-bits, a timer/counter with four 8-bits, and a DMA controller with four channels, are included in the device. Additionally, the device has a range of other auxiliary functions. These timers and counters each have a total of seven 16-bit registers at their disposal. There are a total of nine timers and counters, four of which have four output compare or input capture channels, three of which each have two, and one of which has an advanced waveform extension (AWeX). In addition, the product features a USB device interface compatible with the high-speed (12Mbps) and low-speed (1.5Mbps) protocols that are part of the USB 2.0 standard. These protocols are described in the following sentence. It has 32 connections, and one has complete control over how those connections should be used, thanks to the fact that it has such connections.

The peripherals of the XMEGA microcontroller include seven universal asynchronous receiver/transmitter (USART) ports, IrDA support for one of those USART ports, two two-wire interfaces, three serial peripheral interfaces (SPIs), an AES and DES crypto engine, a 16-bit real-time counter (RTC) with a separate oscillator, two 16-channel 12-bit 2msps analog-to-digital converters (ADCs), and one

In addition, the product incorporates several innovative microcontroller capabilities, such as a programmable brown-out detector and power-on reset, as well as an external clock option that incorporates a phase-locked loop and prescaler, a multilayer interrupt controller, and five distinct sleep modes. These functions can be accessed through the product’s external clock. Additionally, the QTouch® library has been implemented, supporting capacitive touch buttons, sliders, and wheels. This was made possible by the inclusion of the QTouch® library.

Because of its high performance and low power consumption, the Atmel® AVR® XMEGA® Microcontroller is a versatile and powerful piece of hardware that can be used for various applications. This is because it has a low level of power consumption. It is well-suited for a wide variety of applications because of its outstanding performance and low total power consumption.


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