Microchip Technology ATTINY4313-MUR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.98 | $0.98 |
| 15+ | $0.95 | $14.25 |
| 25+ | $0.93 | $23.25 |
| 50+ | $0.88 | $44.00 |
| 100+ | $0.77 | $77.00 |
| N+ | $0.15 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATtiny |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| 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 (2K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 256 x 8 |
| RAM Size | 256 x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.5V |
| Data Converters | - |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 20-QFN-EP (4x4) |
| Package / Case | 20-WFQFN Exposed Pad |
| ROHS |
The Microchip ATTINY4313-MUR is a high-performance 8-bit AVR microcontroller in a space-saving 20-WFQFN package. It delivers 20MHz processing speed with 4KB of flash memory and 256 bytes of SRAM. Engineered for efficiency, it operates from 1.8V to 5.5V and includes essential features like a watchdog timer, brown-out detection, and PWM channels. This MCU is a robust solution for cost-sensitive and power-conscious embedded control applications.
- Ultra-Low Power Operation: Supports 1.8V supply, extending battery life in portable devices.
- Compact Footprint: 20-WFQFN package saves valuable PCB space for miniaturized designs.
- High-Speed AVR Core: 20MHz clock ensures responsive processing for real-time control tasks.
- Integrated Safety Features: Includes BOD, POR, and WDT for enhanced system reliability.
Battery-Powered Sensor Nodes
The 1.8V minimum supply voltage and low-power sleep modes enable long battery life in remote environmental or industrial sensors.
Compact Motor Control
With built-in PWM and a 20MHz AVR core, it can generate precise control signals for small DC or stepper motors in robotics.
Portable Consumer Electronics
The 4KB flash and 256B RAM are sufficient for simple user interface logic in devices like e-cigarettes, toys, or remote controls.
Automotive Interior Lighting
Its wide voltage range and robust features (BOD, POR) make it reliable for controlling LED lighting patterns in vehicle cabins.
Industrial Automation I/O
The WDT and brown-out detection ensure stable operation in noisy industrial environments, handling digital I/O expansion tasks.
Smart Home Controllers
Ideal for managing simple actuation and status monitoring in smart plugs or light switches, thanks to its small footprint and integrated peripherals.
- Q: What is the operating voltage range of the ATTINY4313-MUR?
- A: The ATTINY4313-MUR operates from 1.8V to 5.5V, making it suitable for battery-powered and low-voltage applications.
- Q: What is the maximum clock speed?
- A: It supports a maximum clock speed of 20MHz, providing a balance between performance and power consumption.
- Q: What package is this device available in?
- A: It comes in a compact 20-WFQFN Exposed Pad package, ideal for space-constrained PCB designs.
- Q: Does it include a watchdog timer?
- A: Yes, it features a Watchdog Timer (WDT) for reliable system reset in case of software malfunctions.
- Q: What is the operating voltage range of the ATTINY4313-MUR?
- A: The ATTINY4313-MUR operates from 1.8V to 5.5V, making it suitable for battery-powered and low-voltage applications.
- Q: What is the maximum clock speed?
- A: It supports a maximum clock speed of 20MHz, providing a balance between performance and power consumption.
- Q: What package is this device available in?
- A: It comes in a compact 20-WFQFN Exposed Pad package, ideal for space-constrained PCB designs.
- Q: Does it include a watchdog timer?
- A: Yes, it features a Watchdog Timer (WDT) for reliable system reset in case of software malfunctions.

ATTINY4313-MUR.pdf