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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 20x12b; D/A 1x10b
- Oscillator Type：External, Internal
- Operating Temperature：-40°C ~ 125°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-E/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 an extended temperature range of -40°C to +125°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 true read-while-write operation for uninterrupted code execution during Flash programming.
- Includes a 12-bit differential ADC with programmable gain amplifier for high-precision signal acquisition.
- Supports CPU-independent inter-peripheral signaling via the Event System.
- Provides Configurable Custom Logic (CCL) with multiple Look-up Tables for custom digital logic implementation.
Applications
- Industrial control systems requiring robust analog sensing
- Battery-powered devices utilizing low-power sleep modes
- Smart sensors with integrated signal conditioning
- Automotive applications operating in extended temperature environments
Procurement Notes
Verify the specific ordering suffix 'T' indicates tape and reel packaging when placing orders. Confirm the 'E' suffix corresponds to the extended industrial temperature range (-40°C to +125°C). Ensure compatibility with the UPDI programming interface requirements for your development tools. Check for any preliminary status notices in the datasheet regarding final parameter validation.
Selection Notes
Select this model for applications requiring simultaneous code execution and data storage updates. The 28-pin SSOP package suits space-constrained designs needing extensive I/O. Consider the 12-bit ADC resolution for precision measurement tasks. Evaluate the event system capabilities to reduce CPU overhead in complex peripheral interactions.
Part Context
This component belongs to the AVR EA family, designed for flexible and low-power architectures. It shares pin and feature compatibility with other members like the AVR32EA28 and AVR16EA28, allowing vertical migration without code modification. The family integrates advanced digital peripherals and accurate analog subsystems on the standard AVR CPU core.
Replacement Considerations
AVR64EA28-E/SS (Tube packaging variant)
FAQ
What is the maximum clock frequency for the AVR64EA28T-E/SS?
The device runs at a maximum clock speed of 20 MHz.
Does the Flash memory support reading while writing?
Yes, it features true read-while-write operation, allowing code execution from other Flash sections during programming.
How many general-purpose I/O pins are available?
The 28-pin package provides 24 programmable general-purpose I/O pins.
