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Product Detailed Parameters
- Description：32KB, 4KB 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：32KB (32K x 8)
- Program Memory Type：FLASH
- EEPROM Size：256 x 8
- RAM Size：4K 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 AVR32DU28T-I/SS is an 8-bit microcontroller from the AVR DU family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 32 KB of Flash memory, 4 KB of SRAM, and 256 bytes of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. Key peripherals include a USB 2.0 full-speed interface, two USARTs, one SPI, one TWI/I2C, a 10-bit ADC with 17 channels, and four CCL LUTs. It utilizes a 28-pin SSOP package.
Feature Summary
- Integrates a USB 2.0 full-speed device interface for communication applications
- Includes Program and Debug Interface Disable (PDID) for firmware security
- Features Configurable Custom Logic (CCL) with Look-up Tables for digital logic implementation
- Supports low-power operation through multiple sleep modes including Idle, Standby, and Power-Down
Applications
- USB-enabled consumer electronics devices
- Industrial control systems requiring secure firmware updates
- Smart home appliances with serial communication needs
- Battery-powered IoT nodes utilizing low-power modes
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure the procurement channel provides genuine Microchip Technology components. Check for preliminary status indicators in datasheets as specifications may be subject to change before final release.
Selection Notes
Select this model when 32 KB of program memory and 4 KB of RAM are required alongside integrated USB connectivity. Consider the 28-pin SSOP package for surface-mount assembly constraints. Evaluate the peripheral count, specifically the number of available ADC channels and serial interfaces, against system requirements.
Part Context
This component belongs to the AVR DU family of 8-bit microcontrollers. The family shares pin compatibility across different memory sizes, allowing vertical migration between 16 KB, 32 KB, and 64 KB variants without code modification. The 'DU' designation indicates the inclusion of advanced features like USB and CCL compared to older AVR families.
Replacement Considerations
AVR32DU20T-I/SS offers similar features with reduced I/O pins and ADC channels. AVR32DU32T-I/SS provides increased memory and additional I/O options. AVR64DU28T-I/SS maintains the same pinout but doubles the Flash and SRAM capacity.
