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Product Detailed Parameters
- Description：IC MCU 8BIT 64KB FLASH 28DIP
- Series：AVR® EA
- Mfr：Microchip Technology
- Package：Tube
- 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 ~ 85°C (TA)
- Mounting Type：Through Hole
- Supplier Device Package：28-SPDIP
- Package / Case：28-DIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
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Overview
The AVR64EA28-I/SP 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 temperature ranges (-40°C to +85°C). It provides 23 I/O pins in a 28-pin SPDIP package.
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 10-bit DAC
- Supports advanced digital peripherals including three USARTs, SPI, TWI, and configurable custom logic
Applications
- Industrial control systems requiring robust analog signal processing
- Battery-powered applications utilizing low-power sleep modes
- Embedded systems needing simultaneous code execution and data modification
Procurement Notes
Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature rating. Ensure compatibility with existing design constraints regarding pin count and peripheral availability. Cross-reference datasheet revisions for any silicon errata or functional clarifications before finalizing procurement specifications.
Selection Notes
Select this component when vertical migration within the AVR EA family is required without code modification. Consider the extended feature set compared to lower-memory variants if additional timers or communication interfaces are necessary. Evaluate power consumption requirements against the available sleep modes and oscillator options.
Part Context
This part belongs to the AVR64EA28/32/48 series, designed for seamless integration within the broader AVR EA ecosystem. It shares architectural similarities with other members while offering specific memory and pin configurations tailored for compact embedded designs.
Replacement Considerations
AVR64EA28-E/SS
FAQ
Does the AVR64EA28 support read-while-write operations?
Yes, the device features 64 KB of In-system-programmable Flash memory that supports true read-while-write operation.
What is the maximum operating frequency of the CPU?
The AVR CPU runs at clock speeds up to 20 MHz.
