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Product Detailed Parameters
- Description：IC MCU 8BIT 128KB FLASH 28SSOP
- 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：128KB (128K x 8)
- Program Memory Type：FLASH
- EEPROM Size：512 x 8
- 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-SSOP
- Package / Case：28-SSOP (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The AVR128DA28-I/SS is an 8-bit microcontroller from the AVR® DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB of Flash memory, 16 KB of SRAM, and 512 B 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 up to 23 general-purpose I/O pins in a 28-pin SSOP package.
Feature Summary
- Features intelligent analog peripherals including a 12-bit differential ADC, three analog comparators, and a 10-bit DAC.
- Includes a Peripheral Touch Controller (PTC) for capacitive touch sensing applications.
- Supports flexible inter-peripheral signaling through an integrated Event System.
- Offers configurable custom logic using programmable Look-up Tables (LUTs).
Applications
- Industrial sensor nodes
- Building automation systems
- Consumer appliances
Procurement Notes
Verify the complete part number against official Microchip documentation to ensure correct package type and temperature rating. Confirm that the 'I' suffix corresponds to the required industrial operating range and 'SS' matches the intended SSOP footprint before finalizing procurement orders.
Selection Notes
Select this component when vertical migration within the AVR DA family is required without code modification. Consider the 28-pin variant if the design requires fewer than 32 pins while maintaining access to 128 KB of Flash and advanced analog features like the PTC and ZCD.
Part Context
This device belongs to the AVR® DA family, which utilizes the latest low-power architecture technologies from Microchip Technology. The family allows horizontal migration to reduce pin counts or vertical migration to increase resources while maintaining full pin and feature compatibility across the series.
Replacement Considerations
AVR128DA28-I/SO
FAQ
Does the AVR128DA28 support simultaneous master and slave operation on its TWI interface?
Yes, the TWI/I2C interface can operate simultaneously as a master and slave on different pins.
What is the maximum clock frequency for the internal high-frequency oscillator?
The High-Precision internal high-frequency Oscillator (OSCHF) supports selectable frequencies up to 24 MHz.
How many Zero-Cross Detectors are included in the AVR128DA28?
The AVR128DA28 includes one Zero-Cross Detector (ZCD).
