AVR16EB28T-I/SS

Overview

The AVR16EB28T-I/SS is an 8-bit microcontroller from the AVR EB 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 industrial temperature ranges (-40°C to +85°C). Key peripherals include a 12-bit differential ADC with PGA, two analog comparators, multiple timers (TCB, TCE, TCF), USART, SPI, TWI/I2C interfaces, and a configurable custom logic system.

Feature Summary

• Features a flexible low-power architecture with an Event System for CPU-independent inter-peripheral signaling.
• Includes accurate analog subsystems such as a 12-bit differential ADC with programmable gain amplifier and window compare functions.
• Supports vertical migration without code modification due to full pin and feature compatibility across the family.
• Provides advanced digital peripherals including Configurable Custom Logic (CCL) Look-up Tables and Waveform Extension.

Applications

• Applications requiring low-power operation with high-precision internal oscillator auto-tuning.
• Systems utilizing the Event System for predictable inter-peripheral signaling without CPU intervention.
• Devices needing simultaneous host and client operation on TWI/I2C interfaces.
• Embedded solutions requiring automated CRC Flash program memory scanning for data integrity.

Procurement Notes

Verify the specific ordering suffix 'T' indicates tape and reel packaging and 'I' denotes the industrial temperature range (-40°C to +85°C). Confirm that the SS package style corresponds to SSOP28 dimensions. Ensure the preliminary datasheet status does not impact final production specifications for your design implementation.

Selection Notes

Select this component when 16 KB of Flash and 2 KB of SRAM are sufficient for the application requirements. Consider the 28-pin SSOP package if space constraints align with its footprint. Evaluate the need for the 12-bit differential ADC and PGA features versus simpler single-ended ADC requirements found in other family members.

Part Context

This part belongs to the AVR16EB14/20/28/32 series within the broader AVR EB Family. It shares architectural similarities with the AVR16EB14, AVR16EB20, and AVR16EB32, differing primarily in pin count and available I/O resources. The family emphasizes vertical migration capabilities, allowing designers to scale pin counts while maintaining code compatibility.

Replacement Considerations

AVR16EB20T-I/SS

FAQ

What is the maximum clock frequency for the AVR16EB28T-I/SS?

The AVR CPU runs at clock speeds up to 20 MHz.

Does the device support simultaneous host and client operation on I2C?

Yes, the TWI/I2C interface can operate simultaneously as a host and client on different pins.

What is the write endurance for the EEPROM?

The EEPROM has a write/erase endurance of 100,000 cycles.