AVR64DB64T-E/PT

Overview

The AVR64DB64T-E/PT is an 8-bit microcontroller from the AVR DB family, utilizing an AVR CPU with a hardware multiplier operating at clock speeds up to 24 MHz. It features 64 KB of In-System self-programmable Flash memory, 8 KB of SRAM, and 512 bytes of EEPROM. The device is housed in a TQFP-64 package and supports a supply voltage range of 1.8V to 5.5V. Key peripherals include a 12-bit differential ADC with 22 channels, three analog comparators, three zero-cross detectors, one 10-bit DAC, and three op amps. It offers up to 55 programmable I/O pins, two SPIs, two TWIs, six USARTs, and an event system for inter-peripheral signaling.

Feature Summary

• Features Multi-Voltage I/O (MVIO) on Port C allowing selectable input voltage thresholds for flexible interfacing.
• Includes Configurable Custom Logic (CCL) with programmable Look-up Tables for custom digital logic implementation without CPU intervention.
• Supports automated cyclic redundancy check (CRC) scanning of Flash program memory to ensure data integrity.
• Provides an internal ultra-low power 32.768 kHz oscillator alongside high-precision internal oscillators with auto-tuning capabilities.

Applications

• Industrial control systems requiring robust analog signal conditioning and precise timing.
• Smart energy meters and utility devices needing low-power operation and multiple communication interfaces.
• Building automation and climate control applications utilizing multi-voltage I/O for sensor integration.
• Power control circuits leveraging the optimized Timer/Counter type D and zero-cross detectors.

Procurement Notes

Verify the ordering suffix 'E' confirms the extended temperature range of -40°C to +125°C. Confirm the 'PT' suffix indicates the TQFP package style. Ensure the 'T' suffix matches the required tape and reel carrier type for surface mount assembly processes. Cross-reference the specific datasheet revision DS40002300B for any updates to electrical characteristics or pin definitions before finalizing procurement specifications.

Selection Notes

Select this component when designing systems that require vertical migration within the AVR DB family without code modification. Choose this part if the application demands high pin counts with extensive peripheral availability in a 64-pin form factor. Consider this MCU for designs needing simultaneous host and client operation on TWI/I2C buses. Evaluate the device if the project benefits from the flexibility of configurable custom logic and advanced analog subsystems integrated into a single chip.

Part Context

This device belongs to the AVR® DB microcontroller family, which emphasizes low-power architecture and accurate analog subsystems. The family allows for horizontal and vertical migration between different pin counts and memory sizes while maintaining feature compatibility. The AVR64DB64 represents the 64-pin variant within the 64 KB Flash segment of this series, offering a balance of processing power and peripheral richness for complex embedded applications.

Replacement Considerations

AVR64DB64T-I/PT