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Product Detailed Parameters
- Description:IC MCU 8BIT 32KB FLASH 20VQFN
- Series:tinyAVR® 2
- Mfr:Microchip Technology
- Package:Tape & Reel (TR),Cut Tape (CT)
- Core Processor:AVR
- Core Size:8-Bit
- Speed:20MHz
- Connectivity:I2C, IrDA, SPI, UART/USART
- Peripherals:Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:18
- Program Memory Size:32KB (32K x 8)
- Program Memory Type:FLASH
- EEPROM Size:256 x 8
- RAM Size:3K x 8
- Voltage - Supply (Vcc/Vdd):1.8V ~ 5.5V
- Data Converters:A/D 15x12b
- Oscillator Type:External, Internal
- Operating Temperature:-40°C ~ 85°C (TA)
- Mounting Type:Surface Mount
- Supplier Device Package:20-VQFN (3x3)
- Package / Case:20-VFQFN Exposed Pad
- Grade:-
- Qualification:-
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Overview
The ATtiny3226-MUR is an 8-bit microcontroller from the tinyAVR® 2 family, featuring a 20-pin VQFN package. It includes 32 KB of Flash memory, 3 KB of SRAM, and 256 B of EEPROM. The device operates at a maximum clock frequency of 20 MHz with a supply voltage range of 1.8V to 5.5V. It provides 18 general-purpose I/O pins and supports industrial temperature ranges (-40°C to +85°C). Key peripherals include a 12-bit 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 sensing.
- Supports flexible inter-peripheral signaling via an integrated Event System.
- Offers versatile communication interfaces including dual USART, SPI, and TWI.
Applications
- Industrial control systems requiring robust peripheral integration
- Battery-powered devices utilizing low-power sleep modes
- Sensor nodes using the differential ADC and event system
- General-purpose embedded applications needing UPDI programming
Procurement Notes
Verify the specific ordering suffix 'MUR' corresponds to the required tape and reel packaging format and the -40°C to +85°C industrial temperature grade. Confirm that the 20-pin VQFN package dimensions align with your PCB footprint requirements. Ensure compatibility with the UPDI programming interface for development and production flashing processes.
Selection Notes
Select this component when 32 KB of program memory and 18 I/O lines are necessary within a compact 20-pin form factor. It is suitable for designs requiring precise analog measurements via the 12-bit ADC with PGA. Consider this part over smaller variants if additional timer channels or communication interfaces are needed without increasing pin count.
Part Context
This device belongs to the tinyAVR® 2 family, which emphasizes vertical migration capabilities. It shares architectural similarities with the ATtiny3224 and ATtiny3227, allowing for code reuse across different pin counts. The family utilizes advanced low-power technologies and a unified programming interface to simplify design transitions.
Replacement Considerations
ATtiny3226-SSN
FAQ
What is the function of the 'MUR' suffix in the part number?
The 'MU' indicates a 20-pin VQFN package, while the 'R' denotes that the device is supplied in a Tape & Reel format.
Does the ATtiny3226 support automotive applications?
Standard versions do not; however, Microchip offers VAO variants specifically designed, manufactured, and qualified per AEC-Q100 requirements for automotive use.
How does the Event System benefit peripheral operation?
The Event System allows peripherals to trigger actions independently of the CPU, providing predictable timing and reducing processor load by handling direct inter-peripheral signaling.
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