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Product Detailed Parameters
- Description：IC MCU 8BIT 64KB FLASH 28SSOP
- Series：AVR® EA
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：AVR
- Core Size：8-Bit
- Speed：20MHz
- Connectivity：I2C, IrDA, SMBus, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：23
- Program Memory Size：64KB (64K x 8)
- Program Memory Type：FLASH
- EEPROM Size：512 x 8
- RAM Size：6K x 8
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 5.5V
- Data Converters：A/D 24x12b; D/A 1x10b
- Oscillator Type：External, Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：28-SSOP
- Package / Case：28-SSOP (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The AVR64EA28T-I/SS is an 8-bit microcontroller from the AVR EA family, featuring a 20 MHz AVR CPU with hardware multiplier. It includes 64 KB of Flash memory with read-while-write capability, 6 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 temperatures from -40°C to +85°C. Key peripherals include a 12-bit differential ADC with PGA, a 10-bit DAC, three USARTs, one SPI, and one TWI interface.
Feature Summary
- Features a flexible low-power architecture with 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 comparators
- Supports true read-while-write operation in system-programmable Flash memory
- Integrates Configurable Custom Logic (CCL) with programmable Look-up Tables
Applications
- Industrial control systems requiring robust I/O and analog signal conditioning
- Battery-powered devices utilizing low-power sleep modes and efficient power management
- Communication interfaces using multiple USARTs and TWI/I2C protocols
- Applications needing precise timing via Real-Time Counter and hardware timers
Procurement Notes
Verify the ordering suffix 'T' indicates tape and reel packaging and 'I' confirms the industrial temperature range. Confirm the package type matches SSOP-28 requirements. Ensure compatibility with the UPDI programming interface. Check RoHS compliance status if required by specific manufacturing standards.
Selection Notes
Select this component when vertical migration within the AVR EA family is needed without code modification. Choose based on the requirement for 64 KB Flash and 6 KB SRAM. Consider the 28-pin constraint versus higher pin counts available in the same series. Evaluate the need for the specific analog features like the differential ADC and PGA.
Part Context
This part belongs to the AVR64EA28/32/48 series, which shares pin and feature compatibility for easy vertical migration. The 'EA' designation indicates the inclusion of advanced digital peripherals and accurate analog subsystems compared to previous generations. It utilizes the single-pin Unified Program and Debug Interface (UPDI).
Replacement Considerations
AVR64EA28-E/SS offers extended temperature range (-40°C to +125°C). AVR64EA28/32/48 variants provide different pin counts while maintaining software compatibility.
