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ATMEGA128A-AU Microcontrollers: Datasheet, Features, Application

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Description

Based on the enhanced RISC architecture of the AVR, the Microchip Technology ATMEGA128A-AU is an 8-bit microcontroller with high-density non-volatile memory technology that provides an efficient solution for many embedded control applications. The ATMEGA128A-AU contains 32 general-purpose working registers, 53 general-purpose I/O lines, 4K bytes of EEPROM, and more. This article will introduce you to the details of this microcontroller, if you are interested, please read on.

CAD Model

Fearure: Symbol

Feature: Symbol

 

Feature: Footprint

Feature: Footprint

 

Block diagram

Features: Block Diagram

Feature: Block Diagram

 

Features

  • High-performance, Low-power AtmelAVR 8-bit Microcontroller
  • Advanced RISC Architecture

– 133 Powerful Instructions - Most Single-clock Cycle Execution

– 32 × 8 General Purpose Working Registers + Peripheral Control Registers

– Fully Static Operation

– Up to 16MIPS Throughput at 16MHz

– On-chip 2-cycle Multiplier

  • High Endurance Non-volatile Memory segments

– 128Kbytes of In-System Self-programmable Flash program memory

– 4Kbytes EEPROM

– 4Kbytes Internal SRAM

– Write/Erase cycles: 10,000 Flash/100,000 EEPROM

– Data retention: 20 years at 85°C/100 years at 25°C(1)

– Optional Boot Code Section with Independent Lock Bits

  • In-System Programming by On-chip Boot Program
  • True Read-While-Write Operation

– Up to 64 Kbytes Optional External Memory Space

– Programming Lock for Software Security

– SPI Interface for In-System Programming

  • JTAG (IEEE std. 1149.1 Compliant) Interface

– Boundary-scan Capabilities According to the JTAG Standard

– Extensive On-chip Debug Support

– Programming of Flash, EEPROM, Fuses and Lock Bits through the JTAG Interface

  • Atmel QTouch® library support

– Capacitive touch buttons, sliders and wheels

– Atmel QTouch and QMatrix acquisition

– Up to 64 sense channels

  • Peripheral Features

– Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes

– Two Expanded 16-bit Timer/Counters with Separate Prescaler, Compare Mode and Capture Mode

– Real Time Counter with Separate Oscillator

– Two 8-bit PWM Channels

– 6 PWM Channels with Programmable Resolution from 2 to 16 Bits

– Output Compare Modulator

– 8-channel, 10-bit ADC

  • 8 Single-ended Channels
  • 7 Differential Channels
  • 2 Differential Channels with Programmable Gain at 1x, 10x, or 200x

– Byte-oriented Two-wire Serial Interface

– Dual Programmable Serial USARTs

– Master/Slave SPI Serial Interface

– Programmable Watchdog Timer with On-chip Oscillator

– On-chip Analog Comparator

  • Special Microcontroller Features

– Power-on Reset and Programmable Brown-out Detection

– Internal Calibrated RC Oscillator

– External and Internal Interrupt Sources

– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby

– Software Selectable Clock Frequency

– ATmega103 Compatibility Mode Selected by a Fuse

– Global Pull-up Disable

  • I/O and Packages

– 53 Programmable I/O Lines

– 64-lead TQFP and 64-pad QFN/MLF

  • Operating Voltages

– 2.7 - 5.5V

  • Speed Grades

– 0 - 16MHz

 

Applications

  • Automotive Air Conditioning
  • Automatic Mechanical
  • Embedded system
  • Smart Energy
  • Manufacturing

 

Datasheet

You can download the datasheet the link given below.

ATMEGA128A-AU Datasheet

Specifications

TYPE DESCRIPTION
Category Integrated Circuits (ICs), Embedded, Microcontrollers
Mfr Microchip Technology
Series AVR ATmega
Package Tray
Product Status Active
Core Processor AVR
Core Size 8-Bit
Speed 16MHz
Connectivity EBI/EMI, I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 53
Program Memory Size 128KB (64K x 16)
Program Memory Type FLASH
EEPROM Size 4K x 8
RAM Size 4K x 8
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V
Data Converters A/D 8x10b
Oscillator Type Internal
Operating Temperature -40℃ ~ 85℃
Mounting Type Surface Mount
Package / Case 64-TQFP
Supplier Device Package 64-TQFP (14x14)
Base Product Number ATMEGA128

Manufacturer

Microchip Technology, referred to as MIC, is a U.S. microchip technology company that concentrates its resources in technology, design, manufacturing, and sales.MIC is well known in the semiconductor product and microcontroller markets. The company has launched microcontroller peripherals, analog products, RFID smart cards, and other products to provide quality service for thousands of consumer products worldwide.

 

Advantages

First, the AVR core has a rich instruction set, and the ATMEGA128A-AU executes powerful instructions in a single clock cycle, which allows system designers to optimize the device for power consumption and processing speed. Second, the AVR core contains 32 general-purpose working registers that are directly connected to the arithmetic logic unit, allowing a single instruction executed in a single clock cycle to access two independent registers, resulting in an architecture that is more code efficient than other microcontrollers.

 

Packaging information

Packaging information

Feature: Packaging information

 

ATMEGA128A-AU Alternate

The replacement model for the ATMEGA128A-AU is the ATMEGA103-6AC. In terms of package, the ATMEGA128A-AU uses a 64-pin TQFP and the ATMEGA103-6AC uses a 64-pin TQFP. In terms of technical parameters, the TMEGA128A-AU has 4KS RAM and the ATMEGA103-6AC has 4096B RAM. The clock frequency of the TMEGA128A-AU is 16MHz and the clock frequency of the ATMEGA103-6AC is 6MHz.

 

Where to use MC56F8356VFVE

The ATMEGA128A-AU is specified for operating temperatures from -40°C to 85°C and its reference supply voltage from 2.7V to 5.5V. It should be ensured that the temperature and supply voltage of the applied application do not exceed these reference ranges. In terms of package, the ATMEGA128A-AU is available in a 14 x 14, compact size 64-TQFP package, capable of surface mounting.

 

FAQ

How does the ATMEGA128A-AU's throughput compare to traditional CISC microcontrollers?

The ATmega128A executes powerful instructions in a single clock cycle, achieving a throughput close to 1 MIPS per MHz, which is 10 times faster than traditional CISC microcontrollers.

 

Why is the ATMEGA128A-AU a powerful microcontroller?

By combining an 8-bit RISC CPU with in-system programmable flash memory on a microcontroller, the ATMEGA128A-AU provides a flexible and economical solution for embedded control applications.

 

Which interfaces is the ATMEGA128A-AU compatible with?

EBI/EMI, I²C, SPI, UART/USART

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