The ATMEGA164P-20AUR is a high-performance, low-power Atmel 8-bit AVR RISC-based microcontroller from Microchip Technology. Combining 16KB ISP flash memory, 1KB EEPROM, 2KB SRAM, 32 general purpose I/O lines, 32 general-purpose working registers, a real-time counter, three flexible timer/counters with compare modes, internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, a 6-channel 10-bit A/D converter (8 channels in TQFP and QFN/MLF packages), programmable watchdog timer with internal oscillator, and five software-selectable power-saving modes, this microcontroller is designed for a broad range of applications.

Operating at 20MHz with a voltage range of 1.8-5.5V, the ATMEGA164P-20AUR offers robust flexibility that enables designers to optimize the device for power consumption versus processing speed. The device supports a throughput of 20 MIPS (Million Instructions Per Second) at 20MHz, ensuring ample processing power for complex tasks.

The ATMEGA164P-20AUR is available in a 44-pin TQFP (Thin Quad Flat Package) and 44-pad QFN/MLF (Quad Flat No-leads/Micro Leadframe) packages, providing the necessary I/O lines and features for a wide range of applications. It is also capable of operating in extreme temperature ranges, making it suitable for industrial applications.

With its in-system programmability feature, users can easily program the microcontroller while it is placed in the application circuit. This feature is facilitated through the SPI serial interface, which can also be utilized for downloading the application code in the production environment.

The ATMEGA164P-20AUR incorporates a range of safety features, including a brown-out detector and a watchdog timer to maintain operation stability. It also offers full programmability of fuse and lock bits, which enhance security and prevent unauthorized access to the microcontroller's memory.

This product is well-suited for applications in the automotive, industrial control, smart sensor, home automation, and battery-operated devices. The ATMEGA164P-20AUR from Microchip Technology is an ideal choice for engineers and designers looking for a microcontroller that offers a balanced combination of power efficiency, processing capability, and advanced features in a compact package.