AVR32EA32-I/RXB

Overview

The AVR32EA32-I/RXB is an 8-bit microcontroller from Microchip Technology, part of the AVR EA series. It features a 32 kB Flash program memory with true read-while-write capability, 4 kB SRAM, and 512 B EEPROM. The device operates at a maximum clock frequency of 20 MHz and supports a supply voltage range of 1.8 V to 5.5 V. It includes a 12-bit ADC with a programmable gain amplifier, a 10-bit DAC, two analog comparators, and multiple communication interfaces including SPI, TWI, and USART. The component is housed in a 32-pin VQFN package and functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Features a flexible low-power architecture with hardware multiplication and simultaneous read-while-write flash operations.
• Integrates advanced digital peripherals including configurable custom logic (CCL) and an event system for independent peripheral signaling.
• Includes smart analog capabilities such as a 12-bit ADC with PGA, a 10-bit DAC, and window-compare analog comparators.

Applications

• Industrial control systems requiring robust analog signal processing
• Smart home appliances and consumer electronics
• Battery-powered devices utilizing low-power sleep modes

Procurement Notes

Verify the specific suffix 'RXB' against the official Microchip datasheet to confirm the exact package type and tape-and-reel specifications. Ensure the operating temperature grade matches the industrial requirement (-40°C to +85°C). Cross-reference the RoHS status and lead-free compliance details directly with the manufacturer's current documentation before finalizing procurement orders.

Selection Notes

Select this model when a balance of high-resolution analog inputs and digital flexibility is required in a compact form factor. The inclusion of a programmable gain amplifier and configurable custom logic makes it suitable for applications needing precise sensor interfacing without external components. Compare pin counts and peripheral availability against the AVR32EA28 and AVR32EA48 variants to ensure optimal fit for the specific I/O requirements.

Part Context

This component belongs to the AVR EA family, which utilizes the AVR CPU core running up to 20 MHz. The series emphasizes energy efficiency through various sleep modes and intelligent power management features like brown-out detection and voltage level monitoring. It shares architectural similarities with other AVR MCUs but distinguishes itself with enhanced analog performance and advanced digital logic capabilities.

Replacement Considerations

AVR32EA32-I/PT: Same electrical specifications and memory configuration but housed in a TQFP-32 package instead of VQFN. Verify footprint compatibility if physical dimensions are critical to the design.

FAQ

Does the AVR32EA32 support read-while-write operations?

Yes, the device features 32 kB of system-in-programmable Flash with true read-while-write capability, allowing code execution while rewriting data.

What is the resolution of the integrated ADC?

The microcontroller includes a 12-bit successive approximation register (SAR) analog-to-digital converter with a sampling rate of 375 ksps.

Can the analog comparator be configured for window comparison?

Yes, the two integrated analog comparators support window compare functionality for detecting signals outside a specific voltage range.