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Product Detailed Parameters
- Description：16KB, 2KB SRAM, 24MHZ, USB, 10B
- Series：AVR® DU
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：AVR
- Core Size：8-Bit
- Speed：24MHz
- Connectivity：CANbus, I2C, IrDA, SMBus, SPI, UART/USART, USB
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：20
- Program Memory Size：16KB (16K x 8)
- Program Memory Type：FLASH
- EEPROM Size：256 x 8
- RAM Size：2K x 8
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 5.5V
- Data Converters：A/D 17x10b
- Oscillator Type：External, Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：28-SSOP
- Package / Case：28-SSOP (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The AVR16DU28T-I/SS is an 8-bit microcontroller from the AVR DU family, featuring a 16 KB Flash memory, 2 KB SRAM, and 256 B EEPROM. It operates at clock speeds up to 24 MHz with a supply voltage range of 1.8 V to 5.5 V. The device includes a USB 2.0 full-speed interface, two USARTs, one SPI, and one TWI/I2C module. It provides up to 21 programmable GPIO pins in a 28-pin SSOP package.
Feature Summary
- Integrates a USB 2.0 full-speed device-compliant interface for crystal-less operation via OSCHF tuning.
- Supports vertical migration within the AVR DU family without code modification due to pin and feature compatibility.
- Includes Program and Debug Interface Disable (PDID) for secure firmware upgrades and authentication.
Applications
- USB-enabled embedded control systems
- Industrial communication nodes using USART or TWI
- Low-power applications utilizing multiple sleep modes
Procurement Notes
Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and temperature range. Ensure the component designation matches the exact memory size and peripheral configuration required for the design. Cross-reference the document revision number to access the most current electrical specifications and errata before finalizing procurement.
Selection Notes
Select this model when a 28-pin footprint is required alongside integrated USB connectivity. The 16 KB Flash capacity suits applications with moderate code complexity. Consider the 1.8 V to 5.5 V operating range for flexible power supply designs. Verify that the 21 available GPIO pins meet the interface requirements for the target application.
Part Context
This component belongs to the AVR DU family, which shares architectural similarities across various pin counts and memory sizes. The 'DU' designation indicates the inclusion of advanced peripherals like the Event System and USB controller. Devices in this series are designed for seamless vertical migration, allowing designers to scale memory resources while maintaining software compatibility.
FAQ
Does the AVR16DU28T support crystal-less USB operation?
Yes, the internal high-frequency oscillator (OSCHF) can be tuned to the USB Start-of-Frames (SOFs) to enable crystal-less USB operation.
What is the maximum clock frequency for this device?
The AVR CPU runs at clock speeds up to 24 MHz.
