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Product Detailed Parameters
- Description：IC MCU 8BIT 128KB 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：23
- Program Memory Size：128KB (128K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：16K 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 AVR128DB28-I/SO is an 8-bit microcontroller from the AVR DB family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB Flash, 16 KB SRAM, and 512 bytes EEPROM. The device operates between 1.8 V and 5.5 V in a 28-pin SOIC package. Key peripherals include a 12-bit ADC, 10-bit DAC, three analog comparators, and multiple timers. Communication interfaces consist of USART, SPI, and TWI/I2C.
Feature Summary
- Multi-Voltage I/O (MVIO) on Port C allows flexible voltage threshold selection for mixed-signal applications.
- Configurable Custom Logic (CCL) provides programmable Look-up Tables to implement custom digital logic without CPU intervention.
- Event System enables direct peripheral-to-peripheral signaling, reducing CPU load and improving response times.
- Integrated Analog Signal Conditioning includes op amps with internal resistor ladders for precise signal processing.
Applications
- Industrial control systems requiring robust analog signal conditioning
- Battery-powered devices utilizing low-power sleep modes
- Motor control applications using PWM timers and zero-cross detectors
- Smart sensors integrating multi-voltage I/O capabilities
Procurement Notes
Verify the specific suffix 'I/SO' confirms industrial temperature range (-40°C to +85°C) and SOIC-28 packaging. Confirm datasheet revision DS40002247A matches your design requirements. Ensure UPDI programming interface compatibility with your debugger. Check RoHS compliance status for environmental regulations.
Selection Notes
Select this model when 128 KB Flash and 16 KB SRAM are required within a 28-pin footprint. Choose if multi-voltage I/O flexibility or advanced analog peripherals like op amps are necessary. Consider vertical migration within the AVR DB family for future pin-compatible upgrades without code changes.
Part Context
Part of the AVR128DB28/32/48/64 series, offering horizontal and vertical migration paths. Fully pin and feature compatible across the family. Designed for low-power, high-performance embedded applications using the latest Microchip technologies.
Replacement Considerations
AVR128DB28-I/SS: Same specifications in SSOP-28 package. AVR128DB28-I/SPDIP: Same specifications in SPDIP-28 package. Verify package dimensions and thermal characteristics before substitution.
