AVR32EA48-E/PT

Overview

The AVR32EA48-E/PT is an 8-bit microcontroller from the AVR EA family, featuring a 48-pin TQFP package and an industrial-to-extended temperature range of -40°C to +125°C. It utilizes an AVR CPU with hardware multiplier running at up to 20 MHz. The device includes 32 KB of in-system programmable Flash memory with read-while-write capability, 4 KB of SRAM, and 512 bytes of EEPROM. Key peripherals include a 12-bit differential ADC with PGA, a 10-bit DAC, two analog comparators, three USARTs, SPI, TWI/I2C, and an Event System for inter-peripheral signaling.

Feature Summary

• Supports true read-while-write operation on Flash memory for uninterrupted code execution during reprogramming.
• Integrates a 12-bit differential ADC with a programmable gain amplifier (PGA) for high-precision signal acquisition.
• Features an Event System enabling CPU-independent, predictable inter-peripheral signaling to reduce power consumption.
• Includes Configurable Custom Logic (CCL) with programmable Look-up Tables for flexible digital logic implementation.

Applications

• Closed-loop control systems requiring precise analog feedback
• Secondary safety monitoring equipment
• Sensor nodes utilizing low-power event-driven architectures
• Industrial applications operating in extended temperature environments

Procurement Notes

Verify that the ordering suffix 'E' confirms the extended temperature rating (-40°C to +125°C) and 'PT' specifies the TQFP package. Confirm the datasheet revision matches the specific production lot requirements. Ensure programming tools support the Unified Program and Debug Interface (UPDI). Check for any preliminary status notices if sourcing early samples.

Selection Notes

Select this variant when extended temperature operation beyond standard industrial limits is required. The 48-pin configuration provides sufficient I/O and peripheral density for complex designs. Compare against AVR32EA32 or AVR32EA28 variants if pin count or memory resources can be reduced to lower cost. Ensure the 20 MHz maximum frequency meets the system timing constraints.

Part Context

This component belongs to the AVR EA family, which shares architectural compatibility across 28, 32, and 48-pin devices. Vertical migration within the family allows code reuse without modification. The AVR32EA48 represents the highest pin count option in the 32 KB Flash segment, offering expanded I/O capabilities compared to its smaller counterparts.

Replacement Considerations

AVR32EA48-I/PT serves as the industrial temperature rated substitute. AVR64EA48 offers increased memory but maintains pin compatibility. AVR16EA48 provides a lower-cost alternative with reduced Flash size. Verify that any replacement maintains the required temperature range and package dimensions.