ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：64KB, RWW, 6KB RAM, 28P VQFN, 12
- 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-VQFN (4x4)
- Package / Case：28-VFQFN Exposed Pad
- Grade：-
- Qualification：-
Download product information
Overview
The AVR64EA28T-E/STX 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 extended temperature ranges up to +125°C. Key peripherals include a 12-bit differential ADC with PGA, a 10-bit DAC, two analog comparators, three USARTs, SPI, TWI, and an event system for inter-peripheral signaling.
Feature Summary
- Features a flexible low-power architecture with an Event System for predictable, CPU-independent peripheral signaling.
- Includes accurate analog subsystems such as a 12-bit differential ADC with programmable gain amplifier and window-compare analog comparators.
- Supports advanced digital peripherals including Configurable Custom Logic (CCL) with Look-up Tables and multiple timer/counters for PWM generation.
Applications
- Industrial control systems requiring robust analog signal processing
- Smart sensors utilizing high-resolution ADC and event-driven architectures
- Low-power embedded applications operating in extended temperature environments
Procurement Notes
Verify that the ordering suffix 'T' corresponds to tape and reel packaging and 'E' indicates the extended temperature rating. Confirm the specific pin count variant matches the required package type. Ensure compatibility with existing design constraints regarding the 1.8V to 5.5V operating voltage range and UPDI programming interface requirements.
Selection Notes
Select this component when 64 KB of Flash memory and 6 KB of SRAM are required for larger codebases or data buffers. Choose the extended temperature grade for harsh environments. Consider the 12-bit ADC resolution and PGA for precision measurement tasks. Verify that the 28-pin package fits the physical layout constraints compared to 32 or 48-pin alternatives.
Part Context
This part belongs to the AVR EA family, which offers vertical migration without code modification across different pin counts and memory sizes. It shares architectural similarities with other AVR devices but introduces enhanced analog features and the Event System. The family supports horizontal migration to reduce pin counts while maintaining core functionality.
Replacement Considerations
AVR32EA28T-E/STX serves as a lower-memory alternative within the same package and feature set. AVR64EA28-E/STX is identical except for tube/tray packaging instead of tape and reel. Cross-family replacements require verification of pin compatibility and peripheral availability.
