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Product Detailed Parameters
- Description：IC MCU 8BIT 64KB FLASH 28SOIC
- Series：AVR® DA
- 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：23
- Program Memory Size：64KB (64K x 8)
- Program Memory Type：FLASH
- EEPROM Size：512 x 8
- RAM Size：8K 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
- Supplier Device Package：28-SOIC
- Package / Case：28-SOIC (0.295", 7.50mm Width)
- Grade：-
- Qualification：-
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Overview
The AVR64DA28-I/SO is an 8-bit microcontroller from the AVR DA family, featuring a 28-pin SOIC package. It operates at a maximum frequency of 24 MHz and includes 64 KB of Flash memory, 8 KB of SRAM, and 512 B of EEPROM. The device supports a supply voltage range of 1.8 V to 5.5 V and functions within an industrial temperature range of -40°C to +85°C.
Feature Summary
- Features a hardware multiplier and single-cycle I/O access for efficient processing.
- Includes a Peripheral Touch Controller (PTC) with Driven Shield+ technology for capacitive touch applications.
- Provides a Program and Debug Interface Disable (PDID) mechanism to secure firmware against unauthorized modification.
- Integrates an Event System for CPU-independent inter-peripheral signaling.
Applications
- Capacitive touch interface implementations
- Secure firmware upgrade systems
- Industrial control applications
Procurement Notes
Verify that the specific ordering suffix matches the required package style and temperature rating. Confirm whether the PDID security feature is enabled or disabled in the delivered unit, as this affects programming capabilities. Ensure compatibility with existing design constraints regarding pin count and peripheral availability before finalizing procurement.
Selection Notes
Select this component when vertical migration within the AVR DA(S) family is required without code modification. It is suitable for designs needing up to 64 KB of program memory and 8 KB of data storage. Consider the 28-pin form factor if space is limited but multiple peripherals are still necessary.
Part Context
This part belongs to the AVR DA(S) family, which offers horizontal and vertical migration paths. Devices in this family share pin and feature compatibility, allowing designers to scale memory and I/O resources while maintaining software integrity across different package sizes.
Replacement Considerations
AVR64DA32-I/SO
FAQ
What is the function of the PDID feature?
PDID prevents access to the device's reprogrammable Flash memory over the UPDI after activation, protecting against remote attacks and unauthorized code modification.
How does the PTC enhance touch sensing?
The Peripheral Touch Controller uses Driven Shield+ and Boost Mode technologies to support capacitive touch buttons, sliders, wheels, and 2D surfaces with improved noise immunity.
