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Product Detailed Parameters
- Description：IC MCU 8BIT 128KB FLASH 28SSOP
- 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-SSOP
- Package / Case：28-SSOP (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The AVR128DB28-I/SS is an 8-bit microcontroller from the AVR DB family, featuring a CPU with hardware multiplier running at up to 24 MHz. 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 an industrial temperature range of -40°C to +85°C. It provides 22 general-purpose I/O pins in a 28-pin SSOP package.
Feature Summary
- Multi-Voltage I/O (MVIO) on Port C allows for selectable input voltage thresholds.
- Integrated analog subsystems include a 12-bit ADC, three analog comparators, and a 10-bit DAC.
- Event System enables CPU-independent inter-peripheral signaling for predictable execution.
Applications
- Industrial control systems requiring multi-voltage logic interfacing
- Battery-powered devices utilizing low-power architecture
- Applications needing precise analog signal conditioning
Procurement Notes
Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing design constraints regarding the 28-pin SSOP footprint and UPDI programming interface requirements before finalizing procurement.
Selection Notes
Select this component when vertical migration within the AVR DB family is required without code modification. It is suitable for designs needing high pin counts relative to package size and advanced analog peripherals like ZCD or OPAMPs within a compact form factor.
Part Context
This part belongs to the AVR128DB28/32/48/64 series, which shares full pin and feature compatibility for vertical migration. The device utilizes the latest AVR DB technologies, including flexible low-power architecture and accurate analog subsystems, distinguishing it from older AVR architectures.
Replacement Considerations
AVR64DB28T-E/SS
FAQ
Does the AVR128DB28 support simultaneous master and slave operation on TWI/I2C?
Yes, the TWI/I2C peripheral can operate simultaneously as master and slave on different pins.
What is the maximum clock frequency for the internal oscillator?
The high-precision internal oscillator (OSCHF) supports selectable frequencies up to 24 MHz.
Is the device compatible with external interrupt inputs on all GPIOs?
Yes, external interrupts are supported on all general-purpose I/O pins.
