AVR16EA32T-E/RXB

Overview

The AVR16EA32T-E/RXB is an 8-bit microcontroller from the AVR EA family, featuring a 20 MHz AVR CPU with hardware multiplier. It includes 16 KB of Flash memory with read-while-write capability, 2 KB of SRAM, and 512 bytes of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports an extended temperature range of -40°C to +125°C. Key peripherals include a 12-bit differential ADC with PGA, two TCA timers, four TCB timers, three USARTs, SPI, TWI/I2C, and an Event System. It is housed in a 32-pin VQFN package.

Feature Summary

• AVR CPU running at up to 20 MHz with single-cycle I/O register access
• True read-while-write operation for Flash memory
• Integrated 12-bit differential ADC with programmable gain amplifier
• Event System for CPU-independent inter-peripheral signaling

Applications

• Real-time control systems
• Sensor nodes
• Secondary safety monitoring devices
• Closed-loop control applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and temperature rating. Ensure the component matches the required industrial or extended temperature specifications. Confirm that the tape and reel packaging aligns with automated assembly requirements. Cross-reference the part number with official Microchip documentation to validate authenticity and revision status before procurement.

Selection Notes

Select this component when a balance of moderate memory capacity and advanced analog features is required. The 16 KB Flash and 2 KB SRAM suit applications with complex logic but limited code size. The inclusion of a differential ADC with PGA makes it suitable for precision sensor interfaces. Consider the 32-pin form factor for space-constrained designs requiring multiple communication interfaces.

Part Context

This microcontroller belongs to the AVR EA family, which emphasizes low-power architecture and flexible peripheral integration. It shares pin and feature compatibility with other members of the series, allowing for vertical migration without code modification. The family utilizes modern technologies to provide accurate analog subsystems and advanced digital peripherals for efficient embedded control.

Replacement Considerations

Other AVR EA family members such as AVR16EA28 or AVR16EA48 may serve as alternatives if pin count differences are acceptable. Verify peripheral availability and memory sizes when substituting. Ensure the replacement part maintains the same operating voltage and temperature range requirements.