ATTINY43U-MUR
- Mfr.Part #
- ATTINY43U-MUR
- Manufacturer
- Microchip Technology
- Package / Case
- 20-WFQFN Exposed Pad
- Datasheet
- Download
- Description
- IC MCU 8BIT 4KB FLASH 20QFN
- Stock
- 2,226
- In Stock :
- 2,226
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- Manufacturer :
- Microchip Technology
- Product Category :
- Microcontrollers
- Program Memory Type :
- Flash
- Memory Type :
- Flash
- Core Size :
- 8-Bit
- Product Category :
- 8-bit Microcontrollers - MCU
- Power Supplies :
- 2/5 V
- EEPROM Size :
- 64 x 8
- Max Frequency :
- 8 MHz
- Number of Programmable I/O :
- 16
- uPs/uCs/Peripheral ICs Type :
- MICROCONTROLLER, RISC
- Data Converter :
- A/D 4x10b
- ROM (words) :
- 2048
- Package :
- Tape and Reel (TR);Cut Tape (CT);Digi-Reel®;
- RoHS Status :
- ROHS3 Compliant
- Bit Size :
- 8
- Operating Temperature :
- -40°C~85°C TA
- Number of Terminations :
- 20
- ROM Programmability :
- Flash
- Oscillator Type :
- Internal
- Number of Pins :
- 20
- Terminal Pitch :
- 0.5mm
- Memory Size :
- 4kB
- Supply Current-Max :
- 7 mA
- PWM Channels :
- yes
- Has ADC :
- yes
- Mount :
- Surface Mount
- Core Architecture :
- AVR
- Pbfree Code :
- yes
- Number of Terminals :
- 20
- Data Bus Width :
- 8B
- Series :
- AVR® ATtiny
- Package / Case :
- 20-WFQFN Exposed Pad
- RAM Size :
- 256 x 8
- Mounting Style :
- SMD/SMT
- Number of Timers/Counters :
- 2
- RAM (bytes) :
- 256
- RoHS :
- Compliant
- Number of I/Os :
- 11
- Package Shape :
- Square
- Base Part Number :
- ATtiny43
- Terminal Position :
- QUAD
- Brand :
- Microchip Technology
- Device Core :
- AVR
- Product Status :
- Active
- Width :
- 4 mm
- Packaging :
- Tape and Reel (TR)
- Number of I/O :
- 16
- Tradename :
- AVR
- DMA Channels :
- No
- Connectivity :
- USI
- Surface Mount :
- yes
- Base Product Number :
- ATtiny43
- Supplier Device Package :
- 20-QFN-EP (4x4)
- JESD-30 Code :
- S-PQCC-N20
- Min Supply Voltage :
- 2.7 V
- CPU Family :
- AVR RISC
- Data Converters :
- A/D 4x10b
- Speed :
- 8 MHz
- Reach Compliance Code :
- Compliant
- Number of I/O Lines :
- 16
- Manufacturer :
- Microchip
- Length :
- 4 mm
- Frequency :
- 4MHz
- Min Operating Temperature :
- -40 °C
- Product Type :
- 8-bit Microcontrollers - MCU
- Published :
- 1997
- Core Processor :
- AVR
- Max Operating Temperature :
- 85 °C
- Program Memory Size :
- 4KB 2K x 16
- Interface :
- SPI
- Peripherals :
- Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
- Lifecycle Status :
- Production (Last Updated: 2 years ago)
- Max Supply Voltage :
- 5.5 V
- Factory Lead Time :
- 7 Weeks
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Temperature Grade :
- Industrial
- Qualification Status :
- Not Qualified
- Voltage - Supply (Vcc/Vdd) :
- 1.8V~5.5V
- Mounting Type :
- Surface Mount
- Interfaces :
- SPI/USI
- Product :
- MCU
- Terminal Form :
- NO LEAD
- Datasheets
- ATTINY43U-MUR
ATTINY43U-MUR Documents

Microcontrollers Microchip Technology ATTINY43U-MUR Overview
The ATTINY43U-MUR from Microchip Technology is a robust microcontroller designed to offer an efficient balance between performance and power consumption in a compact 20QFN package. This 8-bit MCU is built on Microchip's high-performance AVR architecture, known for its exceptional reliability and advanced features in a small footprint. With 4KB of integrated flash memory, it provides ample space for application code and data storage, making it a versatile choice for designers looking to optimize their embedded systems. This product integrates well into various applications, ensuring both scalability and ease of integration for high-volume deployments in industrial and consumer electronics markets.
ATTINY43U-MUR Features
The ATTINY43U-MUR microcontroller offers several key features that make it a preferred option for complex electronic designs. These include 4KB of flash memory, a wide operating voltage range of 1.8V to 5.5V, and high energy efficiency. Additionally, it supports multiple programmable I/O lines, which are crucial for system scalability and integration flexibility. Its enhanced RISC architecture allows for fast processing and supports efficient power management modes, which are vital for battery-operated devices.
ATTINY43U-MUR Applications
- Wearable Devices: Utilizes its low power consumption for extended battery life and its compact size for minimalist design footprints, making it ideal for fitness trackers and smart watches.
- Home Automation Systems: Its multiple I/O options enable connectivity and control of various sensors and actuators, essential for smart thermostats, lighting systems, and security devices.
- Consumer Electronics: Provides the core processing power for portable gadgets, such as handheld gaming devices and personal media players, leveraging its efficient processing capabilities and robust flash memory.
- Industrial Monitoring Equipment: Fits perfectly in applications requiring long-term reliability and operational stability, such as in condition monitoring sensors and industrial control systems.
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