AVR64EA32-I/PT

Overview

The AVR64EA32-I/PT is an 8-bit microcontroller from the AVR EA family, featuring a 32-pin TQFP package. It includes 64 KB of in-system programmable Flash with read-while-write capability, 6 KB of SRAM, and 512 bytes of EEPROM. The device operates at clock speeds up to 20 MHz and supports a supply voltage range of 1.8 V to 5.5 V. Key peripherals include a 12-bit differential ADC with PGA, a 10-bit DAC, two analog comparators, three USARTs, one SPI, and one TWI interface.

Feature Summary

• Features a flexible low-power architecture with an Event System for CPU-independent inter-peripheral signaling.
• Includes accurate analog subsystems such as a 12-bit differential ADC with programmable gain amplifier and multiple voltage references.
• Supports true read-while-write operation on Flash memory for uninterrupted code execution during reprogramming.
• Provides advanced digital peripherals including Configurable Custom Logic (CCL) with programmable Look-up Tables.

Applications

• Industrial control systems requiring robust I/O and analog processing
• Sensor interfaces utilizing high-resolution ADC and signal conditioning
• Communication gateways employing multiple serial protocols like USART and TWI
• Battery-powered devices leveraging low-power sleep modes and efficient power management

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing design constraints regarding pin count and peripheral availability. Cross-reference the datasheet revision to validate feature sets and electrical characteristics before finalizing procurement specifications.

Selection Notes

Select this component when 64 KB of non-volatile memory and 6 KB of RAM are required within a 32-pin footprint. Consider the AVR64EA series for applications needing simultaneous read and write operations on Flash. Evaluate the integrated analog peripherals if signal acquisition without external amplification is necessary. Confirm that the industrial temperature range meets environmental requirements.

Part Context

This part belongs to the AVR EA family, which offers vertical migration capabilities without code modification across different pin counts and memory sizes. The AVR64EA32 variant specifically provides a balance of processing power and peripheral richness suitable for complex embedded tasks. It shares architectural similarities with other members of the EA family, facilitating scalable design transitions.

Replacement Considerations

AVR32EA32-I/PT

FAQ

Does the AVR64EA32 support simultaneous reading and writing to Flash?

Yes, the device features true read-while-write operation, allowing code execution from Flash while another section is being programmed or erased.

What is the resolution of the built-in ADC?

The microcontroller includes a 12-bit differential Analog-to-Digital Converter (ADC) with a sampling rate of 375 ksps and a programmable gain amplifier.