The ATMEGA328P-15AZ is a high-performance, low-power Microchip picoPower® 8-bit AVR® RISC-based microcontroller. This compact microcontroller combines 32KB ISP flash memory with read-while-write capabilities, 1KB EEPROM, 2KB SRAM, 23 general-purpose I/O lines, 32 general-purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts, a 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 operates between 1.8-5.5 volts.

Key Features

• High performance, low power Atmel® AVR® 8-bit microcontroller
• Advanced RISC architecture
• 131 powerful instructions – most single clock cycle execution
• 32 x 8 general purpose working registers
• Fully static operation
• Up to 20 MIPS throughput at 20MHz
• On-chip 2-cycle multiplier

Memory

• 32KB of in-system self-programmable flash program memory
• 1KB EEPROM
• 2KB SRAM
• Write/erase cycles: 10,000 flash/100,000 EEPROM
• Data retention: 20 years at 85°C/100 years at 25°C(1)

I/O and Packages

• 23 programmable I/O lines
• 40-pin PDIP, 32-pin QFN/MLF, and 28-pin PDIP

Temperature Range:

• Industrial (-40°C to +85°C)

Speed Grade

• ATmega328P: 0 - 20 MHz @ 1.8 - 5.5V

Power Consumption at 1MHz, 1.8V, 25°C

• Active mode: 0.2 mA
• Power-down mode: 0.1 μA
• Power-save mode: 0.75 μA (including 32 kHz RTC)

The ATMEGA328P-15AZ is suitable for a wide range of applications, including automation, consumer electronics, and battery-operated devices due to its power efficiency and computing capability. It is also the microcontroller found at the heart of the Arduino Uno, making it a popular choice for hobbyists and educators in the field of electronics and programming.