AVR32DA48S-I/6MX

Overview

The AVR32DA48S-I/6MX is an 8-bit microcontroller from the AVR DA(S) family, utilizing the AVR CPU with a hardware multiplier. It operates at up to 24 MHz and features 32 KB of Flash memory, 4 KB of SRAM, and 512 B of EEPROM. The device includes a 12-bit differential ADC with 18 channels, three USARTs, two SPI interfaces, and one TWI interface. It supports Peripheral Touch Controller (PTC) with up to 32 self-capacitance and 256 mutual capacitance channels. The unit incorporates Configurable Custom Logic (CCL), Event System, and Program and Debug Interface Disable (PDID). It is housed in a VQFN48 package and operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates Program and Debug Interface Disable (PDID) for secure firmware protection against unauthorized access.
• Features intelligent analog subsystems including a 12-bit differential ADC with programmable gain amplifier and window comparators.
• Supports capacitive touch applications via Peripheral Touch Controller (PTC) with Driven Shield+ technology.
• Enables CPU-independent inter-peripheral signaling through the integrated Event System.

Applications

• Secure embedded systems requiring firmware authentication
• Industrial control units with multi-voltage I/O requirements
• IoT devices utilizing capacitive touch interfaces

Procurement Notes

Verify the specific ordering suffix '6MX' corresponds to the VQFN48 package style as defined in Microchip documentation. Confirm that the 'S' designation indicates the inclusion of the PDID feature required for your security implementation. Ensure the '-I' suffix matches the intended industrial operating temperature range for your application environment.

Selection Notes

Select this component when vertical migration within the AVR DA(S) family is required without code modification. Choose this part if the design necessitates the PDID security feature combined with a 48-pin form factor. Consider this MCU for applications needing high-precision analog inputs alongside robust digital peripheral counts.

Part Context

This device belongs to the AVR DA(S) family, which offers pin and feature compatibility across varying memory densities. The AVR DA(S) series combines low-power architecture with advanced digital peripherals and intelligent analog features. It is designed for applications requiring real-time control and secure operation in industrial and consumer environments.

Replacement Considerations

AVR64DA48S-I/6MX: Offers increased Flash and SRAM while maintaining pin compatibility.

FAQ

What is the function of the PDID feature in this microcontroller?

Program and Debug Interface Disable (PDID) prevents access to the reprogrammable Flash memory over the UPDI after activation, protecting against remote attacks and unauthorized code modification.

How does the PTC support capacitive touch designs?

The Peripheral Touch Controller supports up to 32 self-capacitance and 256 mutual capacitance channels, utilizing Driven Shield+ and Boost Mode technologies for buttons, sliders, wheels, and 2D surfaces.

Can the TWI interface operate as both host and client simultaneously?

Yes, the TWI interface can operate independently as a host and client on different pins, supporting dual address match functionality.