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ATTINY426-XU
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Product Detailed Parameters
- Description：IC MCU 8BIT 4KB FLASH 20SSOP
- Series：tinyAVR® 2
- Mfr：Microchip Technology
- Package：Tube
- Core Processor：AVR
- Core Size：8-Bit
- Speed：20MHz
- Connectivity：I2C, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：18
- Program Memory Size：4KB (4K x 8)
- Program Memory Type：FLASH
- EEPROM Size：128 x 8
- RAM Size：512 x 8
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 5.5V
- Data Converters：A/D 15x12b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-SSOP
- Package / Case：20-SSOP (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The ATtiny426-XU is an 8-bit microcontroller from the Microchip tinyAVR 2 family, featuring a 20-pin TSSOP package. It includes 8 KB of Flash memory, 1 KB of SRAM, and 128 B of EEPROM. The device operates at a maximum clock frequency of 20 MHz with a supply voltage range of 1.8 V to 5.5 V. Key peripherals include a 12-bit differential ADC with PGA, two USARTs, SPI, TWI, and an Event System.
Feature Summary
- Features a high-performance AVR CPU with hardware multiplier running up to 20 MHz
- Includes a 12-bit differential ADC with Programmable Gain Amplifier (PGA) for accurate analog conversion
- Supports flexible inter-peripheral signaling via an integrated Event System
- Provides versatile communication interfaces including dual USART, SPI, and TWI
Applications
- Industrial control systems requiring low-power operation
- Sensor interface modules utilizing differential ADC inputs
- Battery-powered devices operating within wide voltage ranges
- Embedded applications needing multiple serial communication protocols
Procurement Notes
Verify the specific ordering suffix 'XU' corresponds to the TSSOP package and industrial temperature range (-40°C to +85°C). Confirm that the component is available in tape and reel packaging if required for automated assembly processes. Ensure compatibility with existing design tools and programming interfaces before finalizing procurement.
Selection Notes
Select this model when 8 KB of program memory and 1 KB of data RAM are sufficient for the application requirements. The 20-pin form factor offers a balance between I/O count and board space. Consider the 12-bit ADC performance if high-resolution analog signal processing is necessary compared to standard 10-bit alternatives.
Part Context
This component belongs to the tinyAVR 2 family, which emphasizes vertical migration capabilities without code modification across different pin counts and memory sizes within the same series. The architecture supports single-cycle I/O access and vectored interrupts for efficient real-time processing tasks.
Replacement Considerations
ATtiny426-SSN: SOIC package variant with identical electrical specifications.
FAQ
What is the resolution of the ADC on the ATtiny426?
The ATtiny426 features a 12-bit differential Analog-to-Digital Converter (ADC) equipped with a Programmable Gain Amplifier (PGA).
Does the ATtiny426 support external interrupt functionality?
Yes, the device provides external interrupt capability on all general-purpose I/O pins.
