ATTINY828-AU

Overview

The ATtiny828-AU is an 8-bit AVR microcontroller in a 32-lead TQFP package. It features 8K bytes of in-system programmable Flash, 512 bytes of SRAM, and 256 bytes of EEPROM. The device operates at up to 20 MHz with a throughput approaching 20 MIPS. It includes 28 general-purpose I/O lines, a 10-bit ADC with 32 channels, two timer/counters, USART, SPI, and TWI interfaces. Operating voltage ranges from 1.7V to 5.5V, with industrial temperature support.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high efficiency.
• Integrated analog peripherals including a 10-bit ADC, analog comparator, and temperature sensor.
• Multiple communication interfaces supporting full-duplex USART, master/slave SPI, and slave I2C.
• Flexible power management with Idle, ADC Noise Reduction, and Power-down modes.

Applications

• Battery-powered embedded systems requiring low active and sleep currents.
• Industrial control applications utilizing the wide operating voltage range.
• Sensor interface designs leveraging the multi-channel ADC and analog comparator.
• Communication nodes using USART or SPI for data exchange.

Procurement Notes

Verify the specific suffix 'AU' corresponds to the TQFP-32 package and industrial temperature grade (-40°C to +85°C). Confirm that the ordering information matches the datasheet revision 8371A. Ensure compatibility with development tools such as C compilers and debuggers supported by the AVR core architecture before finalizing procurement.

Selection Notes

Select this component when an 8-bit AVR solution with moderate memory (8KB Flash) and extensive analog capabilities is required. The 32-lead TQFP package provides ample I/O for complex peripheral integration. Consider the calibrated internal oscillators if external crystal resources are limited. Evaluate the pin count against system requirements to ensure optimal utilization of the 28 available I/O lines.

Part Context

The ATtiny828 belongs to the ATtiny family of 8-bit AVR microcontrollers manufactured by Microchip Technology. It utilizes the enhanced RISC architecture common to the series, offering high performance per milliwatt. The device integrates non-volatile memory technologies allowing for in-system programming and read-while-write operations via boot code sections.

Replacement Considerations

Consult official Microchip documentation for verified cross-reference part numbers. Ensure any substitute maintains compatible pinout, memory size, and peripheral functionality. Verify that alternative packages meet the same thermal and electrical specifications.