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Product Detailed Parameters
- Description：IC MCU 8BIT 32KB FLASH 28SOIC
- Series：AVR® DB
- 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：32KB (32K x 8)
- Program Memory Type：FLASH
- EEPROM Size：512 x 8
- RAM Size：4K x 8
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 5.5V
- Data Converters：A/D 9x12b; D/A 1x10b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 125°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 AVR32DB28-E/SO is an 8-bit microcontroller from the AVR DB family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 32 KB Flash, 4 KB SRAM, and 512 B EEPROM. The device operates between 1.8 V and 5.5 V in an SOIC-28 package. Peripherals include one 12-bit ADC, one 10-bit DAC, three analog comparators, one zero-cross detector, two SPIs, three USARTs, and one TWI.
Feature Summary
- Multi-Voltage I/O (MVIO) on Port C for level shifting without external components
- Configurable Custom Logic (CCL) with four Look-up Tables for custom digital logic
- Event System for CPU-independent inter-peripheral signaling
- Automated CRC scan for Flash program memory integrity
Applications
- Industrial control systems requiring multi-voltage interfaces
- Smart energy metering applications utilizing zero-cross detection
- Consumer appliances needing precise analog signal conditioning
- IoT sensor nodes with low-power sleep modes
Procurement Notes
Verify the specific suffix 'SO' confirms the SOIC-28 package style and 'E' indicates the extended temperature range of -40°C to +125°C. Confirm that the ordering code matches the exact pin count and peripheral configuration required for your PCB layout. Ensure compatibility with existing UPDI programming tools for development.
Selection Notes
Select this part when vertical migration within the AVR DB family is needed without code modification. Choose the extended temperature grade if operating environments exceed standard industrial limits. Consider the MVIO feature if interfacing with 5V peripherals while running at lower core voltages.
Part Context
This component belongs to the AVR32DB series, which shares full pin and feature compatibility with other devices in the AVR DB family. This allows for horizontal or vertical migration across different pin counts and memory sizes without altering firmware. The device utilizes the Unified Program and Debug Interface (UPDI) for single-pin programming.
Replacement Considerations
AVR32DB28-I/SS
FAQ
Does the AVR32DB28-E/SO support simultaneous host and client operation on its TWI interface?
Yes, the TWI/I2C interface can operate simultaneously as a host and client on different pins.
What is the maximum clock frequency for the AVR CPU in this device?
The AVR CPU runs at clock speeds up to 24 MHz.
How many Zero-Cross Detectors (ZCD) are included in the AVR32DB28?
The AVR32DB28 includes one Zero-Cross Detector (ZCD).
