AVR128DA32T-I/PT

Overview

The AVR128DA32T-I/PT is an 8-bit microcontroller from the AVR DA family, featuring a 32-pin TQFP package. It integrates 128 KB of Flash memory, 16 KB of SRAM, and 512 B of EEPROM. The device operates at a maximum frequency of 24 MHz with a supply voltage range of 1.8 V to 5.5 V. Key peripherals include a 12-bit ADC, three analog comparators, a 10-bit DAC, three zero-cross detectors, and a Peripheral Touch Controller.

Feature Summary

• Integrates a Peripheral Touch Controller (PTC) supporting driven shield and boost mode technologies for capacitive touch applications.
• Features an Event System that enables CPU-independent inter-peripheral signaling for predictable operation.
• Includes automated cyclic redundancy check (CRC) scanning for Flash memory integrity verification.

Applications

• Capacitive touch interface implementations using buttons, sliders, or wheels.
• Power control systems utilizing the 12-bit Timer/Counter type D.
• Industrial monitoring requiring zero-cross detection for AC signal processing.

Procurement Notes

Verify the specific ordering suffix 'T' indicates tape and reel packaging rather than tube. Confirm the 'I' suffix corresponds to the industrial temperature range of -40°C to +85°C. Ensure the datasheet revision matches the required design specifications before finalizing procurement orders.

Selection Notes

Select this component when vertical migration within the AVR DA family is required without code modification. Consider the 32-pin form factor if pin count reduction from larger variants is necessary while retaining 128 KB of program memory. Evaluate the Peripheral Touch Controller capabilities against application requirements for self-capacitance and mutual capacitance channels.

Part Context

This part belongs to the AVR128DA series, which shares architectural compatibility with AVR64DA and AVR32DA devices. The 'DA' designation identifies the specific feature set including the PTC and advanced digital peripherals. The 32-pin variant offers a balance between I/O availability and package size compared to the 28, 48, and 64-pin options.

Replacement Considerations

AVR128DA32-E/PT

FAQ

What is the maximum number of self-capacitance channels supported by the PTC in this device?

The Peripheral Touch Controller supports up to 22 self-capacitance channels.

How many Zero-Cross Detectors are included in the AVR128DA32?

The device includes one Zero-Cross Detector.

Is the AVR128DA32 fully compatible with other devices in the AVR DA family?

Yes, it is fully pin and feature compatible with other AVR DA family members, allowing for vertical migration without code modification.