Microchip Technology ATMEGA168P-20MU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $3.93 | $3.93 |
| 15+ | $3.81 | $57.15 |
| 25+ | $3.73 | $93.25 |
| 50+ | $3.52 | $176.00 |
| 100+ | $3.11 | $311.00 |
| N+ | $0.62 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Tray | |
| 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 | 23 |
| Program Memory Size | 16KB (8K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 512 x 8 |
| RAM Size | 1K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Data Converters | A/D 8x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 32-VQFN (5x5) |
| Package / Case | 32-VFQFN Exposed Pad |
| ROHS |
The Microchip ATMEGA168P-20MU is a high-performance 8-bit AVR microcontroller in a compact 32-VFQFN package. It delivers 20MHz processing speed with 16KB flash and 1KB SRAM, operating from 2.7V to 5.5V. Its integrated brown-out detection, power-on reset, and watchdog timer ensure robust operation in demanding environments.
- Wide Voltage Range (2.7V-5.5V): Simplifies design by supporting both 3.3V and 5V systems without level shifters.
- High Integration: Includes PWM, WDT, and brown-out detection, reducing external component count and BOM cost.
- Proven AVR Core: 20MHz throughput with efficient single-cycle instructions for time-critical control loops.
- Compact QFN Package: 32-VFQFN footprint saves board space for space-constrained designs.
Industrial Sensor Node
Use the ATMEGA168P-20MU in industrial sensor nodes requiring low-power operation and reliable brown-out detection. Its 2.7V-5.5V supply range ensures compatibility with both 3.3V and 5V sensors.
Motor Control for Small Appliances
With built-in PWM and a 20MHz AVR core, this MCU can generate precise control signals for small DC or stepper motors in appliances, benefiting from the watchdog timer for system recovery.
Portable Medical Devices
The low operating voltage and power-on reset features make it suitable for battery-powered medical monitors. Its 1K x 8 RAM is sufficient for simple data logging and signal processing.
Automotive Aftermarket Add-ons
Operating from -40°C to 85°C, it can handle under-hood or cabin electronics like window controllers or lighting modules, where the brown-out detector ensures safe shutdown during voltage dips.
Smart Home Thermostat
Combine the 16KB flash for complex control algorithms with the PWM output for driving heating elements. The 32-VFQFN package allows for a compact PCB design in wall-mounted units.
Battery Management System (BMS) Monitor
Monitor cell voltages and temperatures in a small BMS. The AVR core's efficiency and the integrated analog features allow for accurate ADC readings while maintaining low current draw.
- Q: What is the maximum clock speed of the ATMEGA168P-20MU?
- A: The maximum clock speed is 20MHz.
- Q: What is the operating voltage range?
- A: It operates from 2.7V to 5.5V.
- Q: How much flash memory does it have?
- A: It has 16KB of flash program memory.
- Q: What package is this device available in?
- A: It comes in a 32-VFQFN exposed pad package.
- Q: What is the maximum clock speed of the ATMEGA168P-20MU?
- A: The maximum clock speed is 20MHz.
- Q: What is the operating voltage range?
- A: It operates from 2.7V to 5.5V.
- Q: How much flash memory does it have?
- A: It has 16KB of flash program memory.
- Q: What package is this device available in?
- A: It comes in a 32-VFQFN exposed pad package.

ATMEGA168P-20MU.pdf