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Product Detailed Parameters
- Description：IC MCU 8BIT 64KB FLASH 28VFQFN
- Series：AVR® DD
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：AVR
- Core Size：8-Bit
- Speed：24MHz
- Connectivity：I2C, IrDA, LINbus, RS-485, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：22
- Program Memory Size：64KB (64K x 8)
- Program Memory Type：FLASH
- EEPROM Size：256 x 8
- RAM Size：8K x 8
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 5.5V
- Data Converters：A/D 19x12b SAR; D/A 1x10b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：28-VQFN (4x4)
- Package / Case：28-VFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The AVR64DD28T-I/STX is an 8-bit microcontroller from the AVR DD family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 64 KB of Flash memory, 8 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 an industrial temperature range of -40°C to +85°C. It is housed in a VQFN-28 package and offers up to 22 programmable I/O pins.
Feature Summary
- Supports Multi-Voltage I/O (MVIO) for flexible interfacing across different power domains
- Integrates an Event System for predictable inter-peripheral signaling without CPU intervention
- Includes intelligent analog peripherals such as a 12-bit ADC, DAC, and Zero-Cross Detector
Applications
- Industrial control systems requiring robust noise immunity
- Smart home appliances with multi-voltage domain requirements
- IoT devices utilizing low-power sleep modes and event-driven processing
Procurement Notes
Verify that the ordering suffix 'STX' corresponds to the VQFN-28 package and 'T' indicates tape and reel packaging. Confirm the 'I' suffix matches the required industrial temperature range specifications. Ensure compatibility with existing design footprints for the specified package style before finalizing procurement orders.
Selection Notes
Select this component when 64 KB of program memory and 8 KB of RAM are required within a compact 28-pin footprint. It is suitable for designs needing MVIO capabilities on PORTC or specific analog features like the ZCD. Consider vertical migration within the AVR DD family if future pin count adjustments are anticipated without code modification.
Part Context
This part belongs to the AVR64DD32/28 series within the broader AVR DD family of microcontrollers. These devices share a common architecture and peripheral set, allowing for easy vertical migration between different pin counts and memory sizes while maintaining full pin and feature compatibility across the series.
Replacement Considerations
AVR64DD28T-I/SS
FAQ
What does the STX suffix indicate for this microcontroller?
The STX suffix denotes the VQFN-28 package style for this specific device variant.
Does this MCU support simultaneous host and client operation on its TWI interface?
Yes, the TWI/I2C interface supports dual mode operation, allowing it to function as both a host and a client simultaneously on different pins.
