The ATMEGA168PA-MMH is a versatile and powerful microcontroller from Microchip Technology, designed for a wide range of applications. This high-performance, low-power AVR® 8-bit microcontroller combines 16KB ISP flash memory, 512B EEPROM, 1KB SRAM, and a host of robust peripherals.

The device operates between 1.8-5.5 volts, allowing for flexible power schemes in battery-operated and portable applications. With a maximum frequency of 20MHz, the ATMEGA168PA-MMH is capable of executing powerful instructions in a single clock cycle, enabling optimized processing speed and power consumption.

The microcontroller features an array of functionalities including an advanced RISC architecture, 23 general-purpose I/O lines, 32 general-purpose working registers, 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.

The device supports a robust set of development tools and software, including the Atmel Studio IDE, Atmel START for code configuration, and a comprehensive set of drivers and libraries. It also features in-system programming by on-chip boot code, making the development process more efficient.

The ATMEGA168PA-MMH comes in a 28-pin QFN package and is lead-free, halogen-free, and RoHS compliant, reflecting Microchip Technology's commitment to environmental sustainability. Its compact form factor and low power consumption make it an excellent choice for space-constrained and power-sensitive applications such as portable devices, sensor networks, and other embedded systems.

With its extensive feature set and robust design, the ATMEGA168PA-MMH is a reliable choice for designers looking to create sophisticated and power-efficient applications in the fields of automation, consumer electronics, IoT, and more.