AVR32EA32T-I/PT

Overview

The AVR32EA32T-I/PT is an 8-bit microcontroller from Microchip Technology, featuring the AVR core. It includes 32 kB of Flash program memory and 4 kB of SRAM data memory. The device operates with a maximum clock frequency of 20 MHz and supports a supply voltage range of 1.8 V to 5.5 V. It is housed in a TQFP-32 package and provides 27 I/O lines. Key peripherals include a 12-bit ADC with 24 channels, a 10-bit DAC, two comparators, three UARTs, SPI, and TWI interfaces. The unit contains six timers/counters and 256 B of EEPROM.

Feature Summary

• Integrates a 12-bit analog-to-digital converter with 24 input channels for high-resolution signal acquisition.
• Includes a 10-bit digital-to-analog converter for precise waveform generation and control applications.
• Features dual hardware comparators for fast response to analog threshold events without CPU intervention.
• Supports multiple communication protocols including three USART modules, SPI, and TWI for versatile system connectivity.

Applications

• Industrial sensor nodes requiring multi-channel analog monitoring
• Motor control systems utilizing comparator-based feedback loops
• Data acquisition units needing simultaneous analog conversion and digital output
• Embedded controllers managing serial communication across multiple peripheral devices

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm the '-I' grade meets the required industrial temperature range of -40°C to +85°C for your application environment. Ensure the TQFP-32 footprint matches your PCB layout constraints. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when a balance of analog precision and digital interface count is required in a compact 32-pin form factor. The inclusion of three UARTs distinguishes it from simpler variants. Consider the 20 MHz speed limit against processing demands. The wide voltage range simplifies power design for mixed-voltage systems.

Part Context

This part belongs to the AVR32EA series, designed for cost-sensitive applications requiring enhanced analog capabilities. It shares architectural similarities with other AVR32 devices but offers specific peripheral combinations tailored for general-purpose control. The TQFP-32 package facilitates surface-mount assembly in space-constrained enclosures.

Replacement Considerations

AVR32EA32-I/PT is the non-tape-and-reel equivalent. AVR32EB32-E/RXB offers similar memory but lacks the DAC and has different timer configurations. AVR32DA32-I/PT provides higher clock speeds and more UARTs but differs in package availability and peripheral counts.