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Product Detailed Parameters
- Description：64KB, 8KB SRAM, 24MHZ, USB, 10B
- Series：AVR® DU
- Mfr：Microchip Technology
- Package：Tube
- 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：21
- 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 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 AVR64DU28-I/SS is an 8-bit microcontroller from the AVR DU family, featuring a hardware multiplier and operating at clock speeds up to 24 MHz. It includes 64 KB of in-system self-programmable Flash memory with read-while-write capability, 8 KB of SRAM, and 256 bytes of EEPROM. The device provides up to 24 programmable GPIO pins and integrates a USB 2.0 full-speed device interface compliant with version 2.0. Peripheral resources include one TCA, two TCBs, one RTC, two USARTs, one SPI, one TWI, one 10-bit ADC, and one analog comparator.
Feature Summary
- Integrates a USB 2.0 full-speed device interface for communication applications
- Features Program and Debug Interface Disable (PDID) for enhanced firmware security
- Includes Configurable Custom Logic (CCL) with four programmable Look-up Tables
- Supports crystal-less USB operation through OSCHF oscillator tuning
Applications
- USB-enabled peripheral devices
- Secure firmware upgrade implementations
- Industrial control systems requiring event-driven signaling
- Sensor nodes utilizing low-power architecture
Procurement Notes
Verify that the component matches the specific package style and temperature range indicated by the ordering suffix. Confirm the datasheet revision status, as preliminary documentation may undergo updates before final release. Ensure compatibility with existing design constraints regarding voltage supply ranges and pin configurations.
Selection Notes
Select this model when a USB 2.0 interface is required within a compact 28-pin SSOP package. Consider the AVR DU family for vertical migration capabilities without code modification. Evaluate the PDID feature if application security against unauthorized access is a priority. Verify power supply requirements align with the specified 1.8V to 5.5V operating range.
Part Context
This component belongs to the AVR DU family, which utilizes the latest Microchip technologies for flexible and low-power architectures. The family offers horizontal and vertical migration paths across various pin counts and memory sizes while maintaining pin and feature compatibility. The AVR64DU28 variant specifically addresses applications needing higher flash capacity in a 28-pin form factor.
Replacement Considerations
AVR32DU28-I/SS
FAQ
What is the maximum operating frequency of the AVR64DU28-I/SS?
The device features an AVR CPU running at clock speeds up to 24 MHz.
Does the AVR64DU28 support simultaneous host and client operations on its I2C interface?
Yes, the Two-Wire Interface (TWI) supports dual address match and simultaneous host/client operation in dual mode.
How does the PDID feature enhance security?
PDID prevents access to the device's reprogrammable Flash memory over the UPDI after activation, protecting against remote attacks and unauthorized code modifications.
