Microchip Technology ATTINY85-20MU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.70 | $1.70 |
| 15+ | $1.65 | $24.75 |
| 25+ | $1.61 | $40.25 |
| 50+ | $1.52 | $76.00 |
| 100+ | $1.34 | $134.00 |
| N+ | $0.27 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATtiny, Functional Safety (FuSa) |
| Packaging | Tray | |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | USI |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 6 |
| Program Memory Size | 8KB (4K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 512 x 8 |
| RAM Size | 512 x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Data Converters | A/D 4x10b |
| 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 ATTINY85-20MU is a high-performance 8-bit AVR microcontroller with 8KB flash and 512 bytes SRAM. Running at up to 20MHz with a 2.7V-5.5V supply, it includes brown-out detection, POR, PWM, and WDT. Its 20-WFQFN package makes it a compact, reliable core for demanding embedded applications.
- 20MHz high-speed operation – enables faster response and higher PWM frequencies.
- 8KB flash memory – accommodates complex firmware with room for updates.
- Comprehensive protection (BOD, POR, WDT) – ensures system stability in harsh environments.
- 20-WFQFN package – provides excellent thermal dissipation for power-intensive tasks.
High-Speed PWM Dimming
The 20MHz clock enables high-frequency PWM for flicker-free LED dimming in professional lighting.
Power Tool Controllers
With 8KB flash and robust protection features, it can manage brushless motor commutation in cordless drills.
Data Logging Systems
Its 512 bytes SRAM and 20MHz speed allow efficient buffering and storage of sensor data in industrial loggers.
Consumer Electronics
Ideal for toys, remote controls, and small appliances requiring reliable operation at 5V.
Automotive Aftermarket
Operating from -40°C to 85°C, it suits engine bay sensors and dashboard displays.
Security Systems
Brown-out detection ensures stable operation in alarm panels and access control units.
- Q: What is the maximum speed of the ATTINY85-20MU?
- A: It operates at up to 20MHz, providing higher throughput for time-critical applications.
- Q: What is the supply voltage range?
- A: It requires 2.7V to 5.5V, suitable for standard 3.3V and 5V systems.
- Q: How much flash memory is available?
- A: It has 8KB of flash memory (4K x 16), allowing larger programs than smaller AVRs.
- Q: What protection features are included?
- A: It includes brown-out detection, power-on reset, PWM, and watchdog timer for reliable operation.
- Q: What package does it come in?
- A: It is available in a 20-WFQFN exposed pad package for efficient thermal management.
- Q: What is the maximum speed of the ATTINY85-20MU?
- A: It operates at up to 20MHz, providing higher throughput for time-critical applications.
- Q: What is the supply voltage range?
- A: It requires 2.7V to 5.5V, suitable for standard 3.3V and 5V systems.
- Q: How much flash memory is available?
- A: It has 8KB of flash memory (4K x 16), allowing larger programs than smaller AVRs.
- Q: What protection features are included?
- A: It includes brown-out detection, power-on reset, PWM, and watchdog timer for reliable operation.
- Q: What package does it come in?
- A: It is available in a 20-WFQFN exposed pad package for efficient thermal management.

ATTINY85-20MU.pdf