Microchip AT90CAN128-16AUR: A Comprehensive 8-bit AVR Microcontroller with CAN Controller Integration

The Microchip AT90CAN128-16AUR stands as a robust and highly integrated member of the venerable AVR family of 8-bit microcontrollers. Designed to excel in demanding industrial, automotive, and networking applications, this microcontroller distinguishes itself by incorporating a powerful Controller Area Network (CAN) controller on-chip, a feature that was relatively rare among 8-bit MCUs at its introduction. This integration makes it a premier choice for systems requiring reliable, robust serial communication within electrically noisy environments.

Built on the proven AVR enhanced RISC architecture, the AT90CAN128-16AU operates at a speed of 16 MHz, achieving a throughput of up to 16 MIPS. This performance enables it to handle complex tasks efficiently while maintaining the low-power characteristics inherent to the AVR core. The device's namesake and most significant feature is its full-featured CAN controller, which is compliant with the CAN 2.0 A and B specifications. This onboard controller supports message rates of up to 1 Mbit/s, handling both standard and extended data frames with 15 independent message objects, reducing the need for external CAN controller chips and simplifying board design.

Beyond its communication prowess, the microcontroller is equipped with a substantial set of peripherals and memory. It boasts 128 KB of in-system self-programmable Flash memory for code storage, 4 KB of SRAM for data handling, and 4 KB of EEPROM for non-volatile data retention. This extensive memory capacity allows for the development of sophisticated applications with ample room for program code, variables, and data logging.

The peripheral set is equally impressive, featuring:

Two 8-bit and one 16-bit timer/counter with PWM capabilities.

An 8-channel, 10-bit ADC for precision analog sensor reading.

Dual USARTs, an SPI, and a TWI (I2C) interface for versatile serial communication.

A JTAG interface for advanced on-chip debugging and boundary-scan capabilities.

Housed in a 64-pin TQFP package, the AT90CAN128-16AUR offers a high number of I/O lines, providing the flexibility to interface with a wide array of sensors, actuators, and other digital components. Its operating voltage range of 2.7V to 5.5V further enhances its suitability for a variety of power environments.

In summary, the AT90CAN128-16AUR is a highly capable microcontroller that packs a powerful combination of processing performance, extensive memory, and critical communication interfaces into a single chip. Its integrated CAN controller remains its defining trait, targeting it squarely at applications where reliable network communication is paramount.

ICGOOODFIND: The AT90CAN128-16AUR is an exceptional and specialized solution for developers building robust networked systems. Its integrated CAN controller eliminates external components, reducing cost and complexity, while the high-performance AVR core and extensive memory provide the necessary resources for demanding embedded applications. It remains a compelling choice for legacy designs and new projects in industrial control and automotive systems.

Keywords: CAN Controller, AVR Microcontroller, 8-bit MCU, Embedded Systems, Industrial Automation.