AVR128DA48-I/PT

Overview

The AVR128DA48-I/PT is an 8-bit microcontroller from the AVR® DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB of self-programmable 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. Key peripherals include a 12-bit ADC with 18 channels, three analog comparators, a 10-bit DAC, three zero-cross detectors, and a Peripheral Touch Controller (PTC). Communication interfaces consist of six USARTs, two SPIs, and two TWI/I²C modules.

Feature Summary

• Features intelligent analog capabilities including a 12-bit differential ADC, three analog comparators with window compare functions, and a 10-bit DAC for signal conditioning.
• Supports capacitive touch applications via the Peripheral Touch Controller (PTC) utilizing Driven Shield+ and Boost Mode technologies.
• Enables CPU-independent inter-peripheral signaling through the Event System and configurable custom logic using Look-up Tables (LUTs).
• Provides flexible power management with multiple sleep modes and an internal Brown-out Detector (BOD) for system reliability.

Applications

• Power control systems utilizing the 12-bit Timer/Counter type D (TCD)
• Zero-cross detection circuits for AC mains monitoring
• Capacitive touch user interfaces such as buttons, sliders, and wheels
• Industrial communication nodes requiring multiple serial interfaces

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature grade. The 'I' suffix indicates an industrial temperature range (-40°C to +85°C), while 'E' denotes extended range. Ensure the pin count matches the required I/O configuration, as the DA family offers vertical migration compatibility across different pin counts. Confirm RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when high peripheral density is needed in a 48-pin package. The AVR128DA48 provides a balance of processing speed and analog features, making it suitable for applications requiring precise signal acquisition and touch sensing. Consider the availability of sufficient General Purpose I/O pins and the need for specific peripherals like the PTC or ZCD before choosing over smaller pin-count variants.

Part Context

This part belongs to the AVR® DA family, which emphasizes low-power architecture and advanced digital peripherals. The family allows for vertical migration without code modification between devices with varying Flash sizes and pin counts. The AVR128DA48 sits in the middle of the 48-pin segment, offering more I/O and peripherals than the 32-pin variant while maintaining compatibility with the larger 64-pin devices.

Replacement Considerations

AVR128DA48-E/MR

FAQ

What is the maximum operating frequency of the AVR128DA48?

The AVR128DA48 runs at a maximum frequency of 24 MHz.

Does the AVR128DA48 support capacitive touch sensing?

Yes, it includes a Peripheral Touch Controller (PTC) with up to 32 self-capacitance and 256 mutual capacitance channels.

How many analog-to-digital converter channels are available?

The device features one 12-bit differential ADC with 18 available channels.