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MCU 8-bit AVR RISC 32KB Flash 2.5V/3.3V/5V 28-Pin SSOP T/R

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AVR32DA28T-I/SS General Description

  • MPLAB Projects
  • Studio Projects

AVR®DA Product Family

The AVR® DA family of microcontrollers feature the well-known AVR® CPU, now running at up to 24 MHz across the full supply voltage range of 1.8V to 5.5V. The family includes 32 KB, 64 KB, and 128 KB Flash variants in 28- to 64-pin package options. The AVR® DA family is designed to bring capacitive touch sensing and real-time control functions to applications including industrial control, home appliance products, automotive, and Internet of Things (IoT).

The family uses the latest Core Independent Peripherals with low-power features and 5V operation for increased noise immunity. The Event System, Configurable Custom Logic (CCL), along with intelligent analog peripherals like 12-bit differential ADC, Zero-Cross Detect (ZCD), DAC, and the latest generation Peripheral Touch Controller (PTC) with driven shield technology make the AVR® DA family perfect for low-latency control applications and capacitive touch user interfaces. The high memory density of the AVR® DA family is well suited for communications stack-intensive applications, both wired and wireless.


The AVR32DA28 microcontroller is part of the AVR® DA family featuring the AVR® processor with hardware multiplier, running at up to 24 MHz and with 32 KB Flash, 4 KB SRAM and 512 bytes of EEPROM in 28-pin packages. The AVR32DA28 will be available in SSOP and SOIC package options.

The AVR32DA28 product supports as many as 18 self-capacitance and 81 mutual capacitance touch channels, which makes the AVR® DA the perfect choice for human interface applications where multiple capacitive touch keys, sliders, wheels, or 2D surface are required.

Functional Safety:

This product is recommended for safety-critical applications targeting industrial and automotive products (IEC 61508 and ISO 26262). Necessary documentation, such as the FMEDA report and a Safety Manual, can be provided on request. Certified development tools are also available for this product. Contact your local Microchip sales office or your distributor for more information.

Microchip Technology, Inc Inventory

Key Features

  • Functional Safety
  • IEC 60730 Class B library (UL certified)
  • ISO 26262 FMEDA (ASIL B Ready certified by SGS TÜV)
  • ISO 26262 Safety Manual (ASIL B Ready certified by SGS TÜV)
  • ISO 26262 software diagnostics (certification pending)
  • IEC 61508 FMEDA
  • IEC 61508 Safety Manual (ultimo 2021)
  • MPLAB XC8 Functional Safety Pro compiler
  • High-Performance AVR RISC CPU with Hardware Multiplier
  • Running up to 24 MHz
  • Single Cycle I/O Access
  • Two-level Interrupt Controller
  • Sleep Modes: Idle, Standby, Power-down
  • Event System (EVSYS)
  • Configurable Custom Logic (CCL)
  • Single pin programming and debugging interface (UPDI)
  • Analog Features
  • 12-bit Differential Analog-to-Digital Converter (ADC)
  • 10-bit Digital-to-Analog Converter (DAC) with Output Buffer
  • Zero-Cross Detector (ZCD)
  • Analog Comparator
  • Timer/Counters
  • Timer/Counter type A (TCA)
  • Timer/Counter type B (TCB)
  • Timer/Counter type D (TCD) for control applications
  • User Interfaces - Peripharal Touch Controller (PTC)
  • 1D Capactive Touch with MCU (Buttons, Sliders, Wheels, Proximity)
  • 2D Capactive Touch Surface/Pads with MCU
  • Communication
  • Serial communication interfaces: USART, SPI, I2C
  • Built-in Safety Functions:
  • Power-On Reset (POR)
  • Brown-Out-Detection (BOD)
  • Voltage Level Monitor (VLM)
  • Cyclic Redundancy Check (CRC) Scan
  • Window Watchdog Timer with Window Mode (WWDT)
Microchip Technology, Inc Original Stock


Category Integrated Circuits (ICs)EmbeddedMicrocontrollers Mfr Microchip Technology
Series AVR® DA Package Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status Active Core Processor AVR
Core Size 8-Bit Speed 24MHz
Connectivity I²C, SPI, UART/USART Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 23 Program Memory Size 32KB (32K x 8)
Program Memory Type FLASH EEPROM Size 512 x 8
RAM Size 4K x 8 Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 10x12b; D/A 1x10b Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA) Mounting Type Surface Mount
Package / Case 28-SSOP (0.209", 5.30mm Width) Supplier Device Package 28-SSOP
Base Product Number AVR32DA28 Manufacturer Microchip
Product Category 8-bit Microcontrollers - MCU RoHS Details
Mounting Style SMD/SMT Core AVR
Data Bus Width 8 bit ADC Resolution 12 bit
Maximum Clock Frequency 24 MHz Number of I/Os 23 I/O
Data RAM Size 4 kB Supply Voltage - Min 1.8 V
Supply Voltage - Max 5.5 V Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 85 C Brand Microchip Technology
DAC Resolution 10 bit Data RAM Type SRAM
Data ROM Size 512 B Data ROM Type EEPROM
Interface Type I2C, SPI, USART Number of ADC Channels 10 Channel
Product MCU Product Type 8-bit Microcontrollers - MCU
Factory Pack Quantity 2100 Subcategory Microcontrollers - MCU
Watchdog Timers Watchdog Timer


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray


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Buying Guide

  • What is the lifespan of AVR32DA28T-I/SS?

    The lifespan of AVR32DA28T-I/SS depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of AVR32DA28T-I/SS?

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