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Product Detailed Parameters
- Description：IC MCU 8BIT 128KB FLASH 28SPDIP
- 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：Through Hole
- Supplier Device Package：28-SPDIP
- Package / Case：28-DIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
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Overview
The AVR128DB28-I/SP is an 8-bit microcontroller from the AVR DB family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB of Flash memory, 16 KB of SRAM, and 512 bytes of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. It provides 22 general-purpose I/O pins in a 28-pin SPDIP package.
Feature Summary
- Features multi-voltage I/O capabilities on Port C for flexible interfacing.
- Includes advanced analog subsystems such as a 12-bit differential ADC and op amps.
- Supports CPU-independent inter-peripheral signaling via the Event System.
- Integrates Configurable Custom Logic (CCL) Look-up Tables for logic implementation.
Applications
- Industrial control systems requiring robust analog signal conditioning
- Power management applications utilizing zero-cross detectors and PWM timers
- Sensor interfaces leveraging high-resolution differential ADC channels
Procurement Notes
Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific revision level against the manufacturer's latest documentation to ensure compatibility with design requirements. Check for any recent production change notices affecting pinout or electrical characteristics before finalizing procurement.
Selection Notes
Select this component when vertical migration within the AVR DB family is needed without code modification. Consider the 28-pin constraint if fewer peripherals are sufficient compared to larger variants. Ensure the application utilizes the multi-voltage I/O features if mixed-signal environments are present.
Part Context
This part belongs to the AVR128DB series, which shares full pin and feature compatibility across the family. It offers horizontal migration options to lower pin counts or vertical scaling to higher memory devices. The architecture emphasizes low-power operation and high-precision analog performance.
Replacement Considerations
AVR128DA28-I/SP
FAQ
Does the AVR128DB28 support simultaneous master and slave TWI/I2C operations?
Yes, the device supports independent master and slave operation modes on different pins.
What is the maximum clock frequency of the internal oscillator?
The high-precision internal oscillator can be selected up to 24 MHz.
How many 16-bit Timer/Counter Type B units are available?
The AVR128DB28 contains three 16-bit Timer/Counter Type B units.
