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Product Detailed Parameters
- Description：IC MCU 8BIT 32KB FLASH 28SSOP
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- Core Processor：AVR
- Core Size：8-Bit
- Speed：20MHz
- Connectivity：I2C, IrDA, SMBus, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：23
- 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 20x12b; D/A 1x10b
- 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：Automotive
- Qualification：AEC-Q100
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Overview
The AVR32EA28-I/SS is an 8-bit microcontroller from Microchip Technology, featuring the AVR core in a VQFN-28 package. It operates with a maximum clock frequency of 20 MHz and supports a supply voltage range of 1.8 V to 5.5 V. The device includes 32 kB of program memory and 4 kB of data RAM. Key peripherals include a 12-bit ADC, a DAC, two comparators, three USARTs, SPI, and TWI interfaces. It functions within a temperature range of -40°C to +85°C.
Feature Summary
- Integrates a 12-bit ADC with a programmable gain amplifier for precise signal acquisition.
- Supports flexible low-power architecture with Event System and configurable custom logic.
- Features true simultaneous read-write (RWW) operation for uninterrupted code execution during flash programming.
Applications
- Industrial control systems requiring robust analog input processing.
- Consumer electronics utilizing multi-channel communication protocols.
- Battery-powered devices benefiting from wide voltage operation and low-power modes.
Procurement Notes
Verify the specific suffix against official datasheets to confirm package type and temperature grade. Ensure compatibility with existing design constraints regarding pinout and peripheral availability. Cross-reference part numbers with manufacturer databases to avoid counterfeit components. Confirm RoHS compliance status if required by regional regulations.
Selection Notes
Select this component when a balance of analog precision and digital connectivity is needed in a compact form factor. The 12-bit ADC and PGA make it suitable for sensor interfaces. Consider the 28-pin constraint for I/O requirements. Evaluate power consumption profiles against application duty cycles.
Part Context
This MCU belongs to the AVR EA series, designed for applications needing advanced analog features alongside standard digital peripherals. It shares architectural similarities with other AVR devices but offers enhanced precision through its integrated differential ADC and programmable gain stages.
Replacement Considerations
Check for pin-compatible alternatives within the AVR EA or DD families. Verify that substitute parts maintain identical peripheral counts and electrical specifications. Ensure software compatibility if migrating between different AVR series members.
